Ventilatory support system using frequencies from 60-900 cycles/min or more. Three types of systems have been distinguished on the basis of rates, volumes, and the system used. They are high frequency positive-pressure ventilation (HFPPV); HIGH-FREQUENCY JET VENTILATION; (HFJV); and high-frequency oscillation (HFO).
Respiratory support system used primarily with rates of about 100 to 200/min with volumes of from about one to three times predicted anatomic dead space. Used to treat respiratory failure and maintain ventilation under severe circumstances.
Supplying a building or house, their rooms and corridors, with fresh air. The controlling of the environment thus may be in public or domestic sites and in medical or non-medical locales. (From Dorland, 28th ed)
Any method of artificial breathing that employs mechanical or non-mechanical means to force the air into and out of the lungs. Artificial respiration or ventilation is used in individuals who have stopped breathing or have RESPIRATORY INSUFFICIENCY to increase their intake of oxygen (O2) and excretion of carbon dioxide (CO2).
The total volume of gas inspired or expired per unit of time, usually measured in liters per minute.
The volume of air inspired or expired during each normal, quiet respiratory cycle. Common abbreviations are TV or V with subscript T.
Application of positive pressure to the inspiratory phase when the patient has an artificial airway in place and is connected to a ventilator.

Meta-analysis of elective high frequency ventilation in preterm infants with respiratory distress syndrome. (1/164)

AIM: To summarise the evidence on the efficacy of elective high frequency ventilation compared with conventional ventilation in preterm infants with respiratory distress syndrome. METHODS: A search from 1987 onwards was made on Embase, Medline, and the Cochrane Library. A questionnaire was also circulated during an international meeting on high frequency ventilation. To be included in the data synthesis, studies had to be randomised controlled trials comparing elective high frequency ventilation with conventional ventilation in preterm infants with respiratory failure due to respiratory distress syndrome; indices of mortality, chronic pulmonary morbidity, and other clinically relevant outcomes were compared. Studies were assessed for methodological validity according to explicit criteria. RESULTS: Ten studies (a total number of 1345 preterm infants) were considered for data synthesis. No difference in mortality at 28 or 30 days, nor in oxygen dependency at 28 days was found between both types of ventilation. Reduced oxygen dependency at the postconceptional age of 36 weeks (RR 0.50, 95% CI 0.32-0.78) was found, but so was an increase in grades 3 and 4 intraventricular haemorrhage (IVH) (RR 1.31, 95% CI 1.04-1.66). Those studies using a high lung volume ventilatory strategy showed a significant decrease in oxygen dependency at the postconceptional age of 36 weeks (RR 0.44, 95% CI 0.27-0.73), but no increase in severe IVH (RR 0.78, 95% CI 0.45-1.37). CONCLUSIONS: Although high frequency ventilation reduces chronic lung disease, it seems to increase the risk of severe IVH. These results are dominated by an early study where the absence of benefit on pulmonary outcomes, and the increase in adverse neurological events, could be related to the low volume ventilatory strategy used. Recent studies, using a high lung volume approach, show better pulmonary outcomes without any increase in intracranial morbidity. Still, uncertainty remains about long term pulmonary and neurodevelopmental outcome.  (+info)

Effect of I/E ratio on mean alveolar pressure during high-frequency oscillatory ventilation. (2/164)

This study investigated factors contributing to differences between mean alveolar pressure (PA) and mean pressure at the airway opening (Pao) during high-frequency oscillatory ventilation (HFOV). The effect of the inspiratory-to-expiratory time (I/E) ratio and amplitude of oscillation on the magnitude of - Pao (Pdiff) was examined by using the alveolar capsule technique in normal rabbit lungs (n = 4) and an in vitro lung model. The effect of ventilator frequency and endotracheal tube (ETT) diameter on Pdiff was further examined in the in vitro lung model at an I/E ratio of 1:2. In both lung models, fell below Pao during HFOV when inspiratory time was shorter than expiratory time. Under these conditions, differences between inspiratory and expiratory flows, combined with the nonlinear relationship between resistive pressure drop and flow in the ETT, are the principal determinants of Pdiff. In our experiments, the magnitude of Pdiff at each combination of I/E, frequency, lung compliance, and ETT resistance could be predicted from the difference between the mean squared inspiratory and expiratory velocities in the ETT. These observations provide an explanation for the measured differences in mean pressure between the airway opening and the alveoli during HFOV and will assist in the development of optimal strategies for the clinical application of this technique.  (+info)

Exhaled nitric oxide increases during high frequency oscillatory ventilation in rabbits. (3/164)

This study compared the effects of high frequency oscillatory ventilation (HFOV) and intermittent mandatory ventilation (IMV) on the homeostasis of nitric oxide (NO) in the lower respiratory tract of healthy rabbits. The mechanisms underlying a putative stretch response of NO formation in the airways were further elucidated. Male New Zealand White rabbits were anaesthetized, tracheotomized and ventilated with IMV or HFOV in random order. Total NO excretion increased from 9.6 +/- 0.8 nl min-1 (mean +/- S.E.M.) during IMV to 22.6 +/- 2.7 nl min-1 during HFOV (P < 0.001). This increase was not explained by changes of functional residual capacity ([Delta]FRC). A similar increase in NO excretion during HFOV was seen in isolated buffer-perfused lungs under constant circulatory conditions (P < 0. 05, n = 4). Intratracheal mean CO2 and NO concentrations, measured at 2.5, 5, 7.5 and 10 cm below tracheostomy, increased significantly with increasing distance into the lung during both IMV and HFOV (P < 0.001 for each comparison). At every intratracheal location of the sampling catheter, particularly low in the airways, both CO2 and NO concentrations were significantly higher during HFOV than during IMV (P < 0.01 for each comparison). We conclude that HFOV increases pulmonary NO production in healthy rabbits. Increased stretch activation of the respiratory system during HFOV is suggested as a possible underlying mechanism. The increase in mean airway NO concentrations may have biological effects in the respiratory tract. Whether it can account for some of the benefits of HFOV treatment needs to be considered.  (+info)

High-frequency oscillatory ventilation is not superior to conventional mechanical ventilation in surfactant-treated rabbits with lung injury. (4/164)

The aim of this study was to compare high-frequency oscillatory ventilation (HFOV) with conventional mechanical ventilation (CMV) with and without surfactant in the treatment of surfactant-deficient rabbits. A previously described saline lung lavage model of lung injury in adult rabbits was used. The efficacy of each therapy was assessed by evaluating gas exchange, lung deflation stability and lung histopathology. Arterial oxygenation did not improve in the CMV group without surfactant but increased rapidly to prelavage values in the other three study groups. During deflation stability, arterial oxygenation decreased to postlavage values in the group that received HFOV alone, but not in both surfactant-treated groups (HFOV and CMV). The HFOV group without surfactant showed more cellular infiltration and epithelial damage compared with both surfactant-treated groups. There was no difference in gas exchange, lung deflation stability and lung injury between HFOV and CMV after surfactant therapy. It is concluded that the use of surfactant therapy in combination with high-frequency oscillatory ventilation is not superior to conventional mechanical ventilation in improving gas exchange, lung deflation stability and in the prevention of lung injury, if lungs are kept expanded. This indicates that achieving and maintaining alveolar expansion (i.e. open lung) is of more importance than the type of ventilator.  (+info)

Effect of changes in oscillatory amplitude on PaCO(2) and PaO(2) during high frequency oscillatory ventilation. (5/164)

AIMS: To describe the relation between oscillatory amplitude changes and arterial blood gas (ABG) changes in preterm infants receiving high frequency oscillatory ventilation, using a multiparameter intra-arterial sensor (MPIAS). METHODS: Continuous MPIAS ABG data were collected after amplitude changes and stratified according to FIO(2): high (> 0.4) or low (< 0.3). For each amplitude change, the maximum change (from baseline) in PaCO(2) and PaO(2) over the following 30 minutes was determined. In total, 64 oscillatory amplitude changes were measured in 21 infants (median birth weight 1040 g; gestation 27 weeks). RESULTS: All amplitude increases produced PaCO(2) falls (median -0.98 and -1.13 kPa for high and low FIO(2) groups respectively). All amplitude decreases produced PaCO(2) rises (median +0.94 and +1.24 kPa for high and low FIO(2) groups respectively). About 95% of the change in PaCO(2) was completed in 30 minutes. Amplitude changes did not affect PaO(2) when FIO(2) > 0.4. When FIO(2) < 0.3, amplitude increases produced a PaO(2) rise (median = +1.1 kPa; P < 0.001) and amplitude decreases a fall (median = -1.2 kPa; P < 0.001). CONCLUSIONS: After oscillatory amplitude changes, the speed but not the magnitude of the PaCO(2) change is predictable, and a rapid PaO(2) change accompanies the PaCO(2) change in infants with mild lung disease and a low FIO(2).  (+info)

Comparison of respiratory indices in predicting response to high frequency oscillatory ventilation in very low birth weight infants with respiratory distress syndrome. (6/164)

To evaluate the predictive values of oxygenation index (OI), arterial-alveolar oxygen tension ratio (a/APO)2, and alveolar-arterial oxygen gradient ((A-a)DO2) for early recognition of responsiveness to high frequency oscillatory ventilation (HFOV) in very low birth weight infants with respiratory distress syndrome (RDS), 23 infants who received HFOV treatment for severe RDS after failing to be improved with conventional mechanical ventilation from July 1995 to February 1998 were included. Twelve infants survived with HFOV (Responder group), while 11 infants could not maintain oxygenation with HFOV and died (Non-responder group). Clinical record (of each patient) were retrospectively reviewed and compared with the respiratory indices. Mean (A-a)DO2 was significantly lower in the responder group than in the non-responder group at 2 hr after HFOV (p=0.024), and the difference was more remarkable at 6 hr (p=0.005). Death in the patient with (A-a)DO2 over 350 at 2 hr after HFOV therapy was 100% in sensitivity and 80% in specificity. The earliest significant difference of mean a/APO2 between two groups was noted at 6 hr after HFOV treatment (p=0.019). OI showed no significant differences between two groups. In summary, (A-a)DO2 was the most effective and sensitive respiratory index for predicting the responsiveness to HFOV in infants with severe RDS providing due as early as 2 hr.  (+info)

Detecting lung overdistention in newborns treated with high-frequency oscillatory ventilation. (7/164)

Positive airway pressure (Paw) during high-frequency oscillatory ventilation (HFOV) increases lung volume and can lead to lung overdistention with potentially serious adverse effects. To date, no method is available to monitor changes in lung volume (DeltaVL) in HFOV-treated infants to avoid overdistention. In five newborn piglets (6-15 days old, 2.2-4.2 kg), we investigated the use of direct current-coupled respiratory inductive plethysmography (RIP) for this purpose by evaluating it against whole body plethysmography. Animals were instrumented, fitted with RIP bands, paralyzed, sedated, and placed in the plethysmograph. RIP and plethysmography were simultaneously calibrated, and HFOV was instituted at varying Paw settings before (6-14 cmH(2)O) and after (10-24 cmH(2)O) repeated warm saline lung lavage to induce experimental surfactant deficiency. Estimates of Delta VL from both methods were in good agreement, both transiently and in the steady state. Maximal changes in lung volume (Delta VL(max)) from all piglets were highly correlated with Delta VL measured by RIP (in ml) = 1.01 x changes measured by whole body plethysmography - 0.35; r(2) = 0.95. Accuracy of RIP was unchanged after lavage. Effective respiratory system compliance (Ceff) decreased after lavage, yet it exhibited similar sigmoidal dependence on Delta VL(max) pre- and postlavage. A decrease in Ceff (relative to the previous Paw setting) as Delta VL(max) was methodically increased from low to high Paw provided a quantitative method for detecting lung overdistention. We conclude that RIP offers a noninvasive and clinically applicable method for accurately estimating lung recruitment during HFOV. Consequently, RIP allows the detection of lung overdistention and selection of optimal HFOV from derived Ceff data.  (+info)

Resonance frequency in respiratory distress syndrome. (8/164)

AIM: To observe how the resonance frequency changes with the course of respiratory distress syndrome (RDS), by examining the effect of changing static compliance on the resonance frequency in premature infants. METHODS: In 12 ventilated premature infants with RDS (mean gestational age 26.6 weeks, mean birth weight 0.84 kg), resonance frequency and static compliance were determined serially using phase analysis and single breath mechanics technique respectively in the first seven days of life. RESULTS: The minimum number of measurements done in any one baby was three and maximum was five in this seven day study period. The first measurement in each baby was done within the first 72 hours of life. The increase in compliance in this period varied from 27% to 179%. The variation in the corresponding resonance frequency was within 2 Hz in eight babies and within 6 Hz in all recruited babies. CONCLUSIONS: The resonance frequency of the respiratory system in preterm infants with RDS remains remarkably constant in the early stages of the illness, despite relatively large changes in static compliance.  (+info)

High-frequency ventilation (HFV) is a specialized mode of mechanical ventilation that delivers breaths at higher rates (usually 120-900 breaths per minute) and smaller tidal volumes (1-3 mL/kg) compared to conventional ventilation. This technique aims to reduce lung injury caused by overdistension and atelectasis, which can occur with traditional ventilator settings. It is often used in neonatal and pediatric intensive care units for the management of severe respiratory distress syndrome, meconium aspiration syndrome, and other conditions where conventional ventilation may be harmful.

There are two main types of high-frequency ventilation: high-frequency oscillatory ventilation (HFOV) and high-frequency jet ventilation (HFJV). Both techniques use different methods to generate the high-frequency breaths but share similar principles in delivering small tidal volumes at rapid rates.

In summary, high-frequency ventilation is a medical intervention that utilizes specialized ventilators to deliver faster and smaller breaths, minimizing lung injury and improving oxygenation for critically ill patients with severe respiratory distress.

High-frequency jet ventilation (HFJV) is a type of mechanical ventilation that delivers breaths at a frequency greater than 100 times per minute, typically in the range of 240-360 breaths per minute. It uses a high-pressure jet of gas to deliver small tidal volumes (usually less than 2 ml/kg of ideal body weight) into the airway.

The jet ventilation is often combined with a low-level positive end-expiratory pressure (PEEP) to maintain some lung volume and prevent atelectasis during exhalation. HFJV can be used in both invasive and noninvasive modes, depending on the patient's condition and requirements.

This mode of ventilation is particularly useful in patients with severe respiratory distress syndrome (ARDS), bronchopleural fistula, or air leaks from lung injury, as it minimizes gas flow and reduces the risk of air leakage while still maintaining adequate oxygenation and carbon dioxide elimination. However, HFJV requires careful monitoring and expertise to ensure proper settings and avoid complications such as barotrauma, hemodynamic instability, or inadequate ventilation.

Ventilation, in the context of medicine and physiology, refers to the process of breathing, which is the exchange of air between the lungs and the environment. It involves both inspiration (inhaling) and expiration (exhaling). During inspiration, air moves into the lungs, delivering oxygen to the alveoli (air sacs) where gas exchange occurs. Oxygen is taken up by the blood and transported to the body's cells, while carbon dioxide, a waste product, is expelled from the body during expiration.

In a medical setting, ventilation may also refer to the use of mechanical devices, such as ventilators or respirators, which assist or replace the breathing process for patients who are unable to breathe effectively on their own due to conditions like respiratory failure, sedation, neuromuscular disorders, or injuries. These machines help maintain adequate gas exchange and prevent complications associated with inadequate ventilation, such as hypoxia (low oxygen levels) and hypercapnia (high carbon dioxide levels).

Artificial respiration is an emergency procedure that can be used to provide oxygen to a person who is not breathing or is breathing inadequately. It involves manually forcing air into the lungs, either by compressing the chest or using a device to deliver breaths. The goal of artificial respiration is to maintain adequate oxygenation of the body's tissues and organs until the person can breathe on their own or until advanced medical care arrives. Artificial respiration may be used in conjunction with cardiopulmonary resuscitation (CPR) in cases of cardiac arrest.

Pulmonary ventilation, also known as pulmonary respiration or simply ventilation, is the process of moving air into and out of the lungs to facilitate gas exchange. It involves two main phases: inhalation (or inspiration) and exhalation (or expiration). During inhalation, the diaphragm and external intercostal muscles contract, causing the chest volume to increase and the pressure inside the chest to decrease, which then draws air into the lungs. Conversely, during exhalation, these muscles relax, causing the chest volume to decrease and the pressure inside the chest to increase, which pushes air out of the lungs. This process ensures that oxygen-rich air from the atmosphere enters the alveoli (air sacs in the lungs), where it can diffuse into the bloodstream, while carbon dioxide-rich air from the bloodstream in the capillaries surrounding the alveoli is expelled out of the body.

Tidal volume (Vt) is the amount of air that moves into or out of the lungs during normal, resting breathing. It is the difference between the volume of air in the lungs at the end of a normal expiration and the volume at the end of a normal inspiration. In other words, it's the volume of each breath you take when you are not making any effort to breathe more deeply.

The average tidal volume for an adult human is around 500 milliliters (ml) per breath, but this can vary depending on factors such as age, sex, size, and fitness level. During exercise or other activities that require increased oxygen intake, tidal volume may increase to meet the body's demands for more oxygen.

Tidal volume is an important concept in respiratory physiology and clinical medicine, as it can be used to assess lung function and diagnose respiratory disorders such as chronic obstructive pulmonary disease (COPD) or asthma.

Intermittent Positive-Pressure Ventilation (IPPV) is a type of mechanical ventilation in which positive pressure is intermittently applied to the airway and lungs, allowing for inflation and deflation of the lungs. This mode of ventilation is often used in critical care settings such as intensive care units (ICUs) to support patients who are unable to breathe effectively on their own due to respiratory failure or other conditions that affect breathing.

During IPPV, a mechanical ventilator delivers breaths to the patient at set intervals, with each breath consisting of a set volume or pressure. The patient may also be allowed to take spontaneous breaths between the mechanically delivered breaths. The settings for IPPV can be adjusted based on the patient's needs and condition, including factors such as their respiratory rate, tidal volume (the amount of air moved with each breath), and positive end-expiratory pressure (PEEP), which helps to keep the alveoli open and prevent atelectasis.

IPPV can be used to provide short-term or long-term ventilatory support, depending on the patient's needs. It is an effective way to ensure that patients receive adequate oxygenation and ventilation while minimizing the risk of lung injury associated with high pressures or volumes. However, it is important to closely monitor patients receiving IPPV and adjust the settings as needed to avoid complications such as ventilator-associated pneumonia or barotrauma.

HFFI - High Frequency Flow Interruption is similar to high-frequency jet ventilation but the gas control mechanism is different ... High-frequency jet ventilation (HFJV) is provided by the Bunnell Life Pulse High-Frequency Ventilator. HFJV employs an ... High-frequency positive pressure ventilation is rarely used anymore, having been replaced by high-frequency jet, oscillatory ... Transtracheal jet ventilation refers to a type of high-frequency ventilation, low tidal volume ventilation provided via a ...
Also categorized under High Frequency Ventilation is High Frequency Percussive Ventilation, sometimes abbreviated HFPV. With ... "Comparison of high frequency jet ventilation to conventional ventilation during severe acute respiratory failure in humans". ... A mandatory breath can occur during a spontaneous breath (e.g., High Frequency Jet Ventilation). A mandatory breath is, by ... In high-frequency oscillatory ventilation (sometimes abbreviated HFOV) the oscillation bellows and piston force positive ...
... which is not considered conventional ventilation and refers to high-frequency ventilation; a low tidal volume ventilation and ... Ihra G, Gockner G, Kashanipour A, Aloy A (2000). "High-frequency jet ventilation in European and North American institutions: ... Percutaneous transtracheal ventilation may be mistaken for transtracheal jet ventilation, ... Percutaneous transtracheal ventilation is the delivery of oxygen to the lungs through an over-the-needle catheter inserted ...
An alternative to ECMO is high-frequency oscillatory ventilation. In 1908, Maude Abbott documented pulmonary hypoplasia ... Pressure within the bladder becomes abnormally high, causing abnormal function in the kidneys hence abnormally high pressure in ... This high pressure also interferes with normal development of other organs. An experiment in rabbits showed that PH also can be ... Often, a baby with a high risk of pulmonary hypoplasia will have a planned delivery in a specialty hospital such as (in the ...
The use of high frequency ventilation has been reported. Mechanical ventilation can also cause pulmonary barotrauma when high ... Employment of certain measures such as Positive end-expiratory pressure (PEEP) and ventilation at higher-than-normal pressures ... At least 30% of TBI are not discovered at first; this number may be as high as 50%. In about 10% of cases, TBI has no specific ... If subcutaneous emphysema occurs and the hyoid bone appears in an X-ray to be sitting unusually high in the throat, it may be ...
High frequency ventilation is thought to reduce ventilator-associated lung injury, especially in the context of ARDS and acute ... "High-frequency ventilation for acute lung injury and ARDS". Chest. 118 (3): 795-807. doi:10.1378/chest.118.3.795. PMID 10988205 ... High flow rates are associated with rheotrauma, high volumes with volutrauma and pressures with barotrauma. Collectively these ... Open lung ventilation is a ventilatory strategy that combines small tidal volumes (to lessen alveolar overdistension) and an ...
Buczkowski PW, Fombon FN, Russell WC, Thompson JP (November 2005). "Effects of helium on high frequency jet ventilation in ... It is also used as a breathing gas diluent for deep ambient pressure diving as it is not narcotic at high pressure, and for its ... Because sound travels faster in heliox than in air, voice formants are raised, making divers' speech very high-pitched and hard ... Heliox has also found utility in the weaning of patients off mechanical ventilation, and in the nebulization of inhalable drugs ...
Clarke JR, Homer LD, Flynn ET (1983). "Efficiency of high frequency ventilation as determined by nitrogen washouts: a model ... The projects included work on diving equipment and physiology that included high frequency ventilation experiments. From 1983 ... "Tracheal pressure and impedance as determinants of gas exchange during high frequency ventilation" (PDF). Respiration ... "The effects of Gas Density on Gas Transport During High Frequency Oscillation" (PDF). Doctoral Thesis Presented to the ...
Buczkowski PW, Fombon FN, Russell WC, Thompson JP (November 2005). "Effects of helium on high frequency jet ventilation in ... Heliox has also found utility in the weaning of patients off mechanical ventilation, and in the nebulization of inhalable drugs ... Heliox's low density produces a lower Reynolds number and hence higher probability of laminar flow for any given airway. ... which can lead to respiratory failure and require intubation and mechanical ventilation. Heliox may reduce all these effects, ...
Use advanced life support techniques, such as high frequency ventilation and intra-arterial cardiovascular assist devices. Make ... They also found the high end of the salary range to be around $190,000 to $220,000 for experienced anesthesiologist assistants ...
High-frequency percussive ventilation is recommended by Murray et al (2013) for respiratory support as atelectasis is likely. ... A high concentration of oxygen in the breathing gas reduces the severity of decompression sickness complications and may ... Persons at risk are astronauts and high altitude aviators, for whom it is an occupational hazard. Symptoms of ebullism include ... Ebullism occurs as a consequence of exposure to ambient pressures below about 47 millimetres of mercury (63 mbar). At higher ...
"Retrospective study of 111 cases of congenital diaphragmatic hernia treated with early high-frequency oscillatory ventilation ... To date, it carries a high mortality and is an active area of clinical research.[citation needed] This rare anterior defect of ... High, Frances A.; Longoni, Mauro; Donahoe, Patricia K.; Chung, Wendy K.; Shen, Yufeng (2018). "De novo variants in congenital ...
Clinical investigations research kept the wing at the forefront of development of high-frequency ventilation and extra- ... 59MDW OFFICE OF THE CHIEF SCIENTIST The Chief Scientist provides senior leadership and develops high-level collaborations ...
In 2011, it was the first pediatric hospital in Quebec to use high-frequency jet ventilation in the context of neonatal ...
... refers to a type of high-frequency ventilation, low tidal volume ventilation provided via a ... Benumof JL, Scheller MS (1989). "The importance of transtracheal jet ventilation in the management of the difficult airway". ... Ravussin P, Bayer-Berger M, Monnier P, Savary M, Freeman J (1987). "Percutaneous transtracheal ventilation for laser endoscopic ... "Transtracheal jet ventilation in the 'can't intubate can't oxygenate' emergency: a systematic review". British Journal of ...
Vt - Tidal volume Ve - Minute ventilation Amplitude - High-frequency ventilation (Active) Pip - Peak inspiratory pressure Pplat ... Therefore, in contrast to IMV, the mandatory breath frequency may be higher than the set frequency but never below it. In some ... Control Pressure Limited Ventilation Pressure Controlled Ventilation Pressure Targeted Ventilation IMV is a form of ventilation ... Volume Control Volume Limited Ventilation Volume Controlled Ventilation Controlled Ventilation Volume Targeted Ventilation ...
HFV may refer to: Human foamy virus High frequency ventilation, medical ventilation Hessian Football Association, Germany This ...
Today, with the advent of surfactant therapy and high frequency ventilation and oxygen supplementation, infants with BPD ... Monitoring the level of carbon dioxide in neonatal infants to ensure that the level is not too high or too low (hypocarbia) is ... It is also more common in infants with low birth weight (LBW) and those who receive prolonged mechanical ventilation to treat ... Prolonged high oxygen delivery in premature infants causes necrotizing bronchiolitis and alveolar septal injury, with ...
The first type of high frequency ventilator made for neonates and the only jet type is made by Bunnell Incorporated. It works ... Mechanical ventilation, assisted ventilation or intermittent mandatory ventilation (IMV) is the medical term for using a ... It works by using very small tidal volumes by setting amplitude and a high rate set in hertz. This type of ventilation is ... The most commonly used high frequency ventilator and only one approved in the United States is the 3100A from Vyaire Medical. ...
... high-frequency ventilation MeSH E02.880.820.508.510 - high-frequency jet ventilation MeSH E02.880.820.525 - liquid ventilation ... high-intensity focused, transrectal MeSH E02.642.249.200 - caloric restriction MeSH E02.642.249.257 - diabetic diet MeSH ... Intermittent positive pressure ventilation MeSH E02.880.820.950 - ventilator weaning MeSH E02.912.400.300 - hemodiafiltration ...
Sildenafil Milrinone Glucocorticoids The therapies available to manage PPHN include high frequency ventilation, surfactant ... Infants experience a high mean arterial pulmonary artery pressure and a high afterload at the right ventricle. This means that ... To diagnose a fetus with pulmonary hypertension, PVR must be higher than systemic vascular resistance, resulting in high ... When the baby is born, the lungs are needed for oxygen transfer and need high blood flow which is encouraged by low PVR. The ...
... high-frequency ventilation, tracheal intubation, airway suction, tracheostomy, chest physiotherapy, nebuliser treatment, sputum ... high flow nasal cannula, nebuliser treatment or non-invasive ventilation. However data are still lacking for many AGPs. Klompas ... The term AGP became popular during the 2003 SARS epidemic, where small retrospective studies showed a higher rate of infection ... Medical procedures that have been designated as AGPs include positive-pressure mechanical ventilation including BiPAP and ...
... is one mechanism by which ventilation occurs during High-frequency oscillatory ventilation A final example of ... This gas flow can help improve ventilation of alveoli in regions with increased airway resistance or poorer compliance, ... Lohser, Jens; Ishikawa, Seiji (2011). "Physiology of the Lateral Decubitus Position, Open Chest and One-Lung Ventilation". In ... This can significantly impair ventilation, and historically was one issue that limited thoracic surgery until more complex ...
New Delhi to a state of the art facility with modern high frequency ventilation with Nitric Oxide delivery and bedside cerebral ... The Government of India honoured her with the third-highest civilian award, Padmabhushan, in 2014, for her services to the ... Neelam Kler is an Indian neonatologist, known for her pioneering work on neonatal intensive care and ventilation. She is ... and is considered a pioneer in intensive care and ventilation. She is credited with developing the department of neonatology at ...
... effective ventilation and high frequency air changes, or air filtration through high efficiency particulate filters, reduce ... presented a particularly high risk of airborne transmission, as they were spreading a much higher number of aerosol particles ... Poor ventilation enhances transmission by allowing aerosols to spread undisturbed in an indoor space. Crowded rooms are more ... Noti JD, Blachere FM, McMillen CM, Lindsley WG, Kashon ML, Slaughter DR, Beezhold DH (2013). "High humidity leads to loss of ...
... high-frequency ventilation (HFV), isoproterenol, nitric oxide, and vasodilators. The classical explanation of HPV involves ... High-altitude mountaineering can induce pulmonary hypoxia due to decreased atmospheric pressure. This hypoxia causes ... While the maintenance of ventilation/perfusion ratio during regional obstruction of airflow is beneficial, HPV can be ... Additionally, several studies on native populations remaining at high altitudes have demonstrated to varying degrees the ...
This is known as open lung ventilation. High frequency oscillatory ventilation (HFOV) with its use of 'super CPAP' is ... equivalent to a very high PEEP. Atelectotrauma is one of several means by which mechanical ventilation may damage the lungs ... are medical terms for the damage caused to the lung by mechanical ventilation under certain conditions. When parts of the lung ... especially effective in preventing atelectotrauma since it maintains a very high mean airway pressure (MAP), ...
Treatments include: Lateral decubitus position with the affected side down High-frequency ventilation Lobectomy Selective Main ... When limiting the population studied to premature infants, this frequency increases to 20-30%, with the highest frequencies ... Studies reflecting international frequency demonstrated that 2-3% of all infants in NICUs develop pulmonary interstitial ... For longer durations of PIE the length of time of mechanical ventilation needed may increase and the incidence of ...
... that using perflubron with ordinary ventilators improved outcomes as much as using high frequency oscillating ventilation (HFOV ... Liquid ventilation removes many of the high pressure gradients responsible for this damage. Furthermore, perfluorocarbons have ... All uses of liquid breathing for diving must involve total liquid ventilation (see above). Total liquid ventilation, however, ... This mode of liquid ventilation currently seems technologically more feasible than total liquid ventilation, because PLV could ...
... especially when using high-frequency (oscillatory/jet) ventilation.[citation needed] The position of lung infiltrates in acute ... When ventilating at high frequencies, its contribution can be substantial, particularly in people with obstructive lung disease ... A shunt is a perfusion without ventilation within a lung region.[citation needed] Low tidal volume ventilation was the primary ... The primary treatment involves mechanical ventilation together with treatments directed at the underlying cause. Ventilation ...
HFFI - High Frequency Flow Interruption is similar to high-frequency jet ventilation but the gas control mechanism is different ... High-frequency jet ventilation (HFJV) is provided by the Bunnell Life Pulse High-Frequency Ventilator. HFJV employs an ... High-frequency positive pressure ventilation is rarely used anymore, having been replaced by high-frequency jet, oscillatory ... Transtracheal jet ventilation refers to a type of high-frequency ventilation, low tidal volume ventilation provided via a ...
When the lungs are in a derecruited state, the combinations of frequency, PE … ... This analysis illustrates the importance of using high-frequency ventilation in infant respiratory distress syndrome and of ... Understanding the pressure cost of ventilation: why does high-frequency ventilation work? Crit Care Med. 1994 Sep;22(9 Suppl): ... Solutions to these models were combined to assess the total pressure cost of high-frequency ventilation as a function of the ...
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High frequency ventilation. J Pediatr. 1994;124:661-670. 5. Wetzel RC, Gioia FR. High frequency ventilation. Pediatr Clin North ... and high-frequency ventilation (HFV). HFV is a generic term that describes modes of mechanical ventilation delivering breaths ... High-frequency oscillatory ventilation for adult respiratory distress syndrome: a pilot study. Crit Care Med. 1997;25:937-947. ... High-frequency oscillatory ventilation (HFOV) employs a piston-driven device that allows both active inspiration and expiration ...
High frequency jet ventilation versus high frequency oscillatory ventilation for pulmonary dysfunction in preterm infants. ... High frequency jet ventilation versus high frequency oscillatory ventilation for pulmonary dysfunction in preterm infants. ... Two new types of breathing machines (known as high frequency jet ventilation (HFJV) and high frequency oscillatory ventilation ... Two methods of HFV - high frequency oscillatory ventilation (HFOV) and high frequency jet ventilation (HFJV) - are widely used ...
Objective High-frequency oscillatory ventilation (HFOV) is widely used in neonatology. The Dräger Babylog VN500 ventilator ... mode when the high-frequency tidal volume (VThf) to be delivered can be set. We investigated how HFOV-VG maintains VThf in the ...
Idsardi, A.N. (2018) Towards individualized titration of high-frequency oscillatory ventilation in paediatric acute respiratory ... Towards individualized titration of high-frequency oscillatory ventilation in paediatric acute respiratory failure ...
All 10 patients required initial advanced mechanical ventilation (high-frequency oscillatory or bilevel ventilation with high ... the high prevalence of obesity (especially extreme obesity), and the frequency of clinically significant pulmonary emboli and ... extremely obese patients have a higher prevalence of comorbid conditions that confer higher risk for influenza complications, ... The high prevalence of obesity in this case series is striking. Whether obesity is an independent risk factor for severe ...
High-frequency ventilation. High-frequency ventilation (HFV) is another important modality if a newborn has underlying ... High-frequency ventilation: Used in newborns with underlying parenchymal lung disease and low lung volumes; therapy is best in ... If a newborn has severe parenchymal lung disease and PPHN, strategies such as high-frequency ventilation (HFV) may be required. ... What is the role of high-frequency ventilation (HFV) in the treatment of persistent pulmonary hypertension of the newborn (PPHN ...
High-frequency oscillatory ventilation†. 1/19 (5.3). 18/205 (8.8). 0.60 (0.08-4.25). 1. ... Noninvasive ventilation†. 9/105 (8.6). 10/119 (8.4). 1.02 (0.43-2.41). 0.96. ... Manual ventilation†. 5/90 (5.6). 14/134 (10.5). 0.53 (0.20-1.42). 0.23. ...
High-frequency ventilation. High-frequency ventilation (HFV) is another important modality if a newborn has underlying ... High-frequency ventilation: Used in newborns with underlying parenchymal lung disease and low lung volumes; therapy is best in ... If a newborn has severe parenchymal lung disease and PPHN, strategies such as high-frequency ventilation (HFV) may be required. ... What is the role of high-frequency ventilation (HFV) in the treatment of persistent pulmonary hypertension of the newborn (PPHN ...
High Frequency Oscillatory Ventilation. In accordance with new AARC rules, the Recorded Live Credit Courses are only available ...
High frequency oscillatory ventilation (HFOV) is an alternative form of mechanical ventilation that can be delivered on ... The Multicenter Oscillatory Ventilation for ARDS Trial ( MOAT) study investigators : High-frequency oscillatory ventilation for ... A protocol for high-frequency oscillatory ventilation in adults: results from a roundtable discussion. Crit Care Med. 2007 Jul; ... High frequency oscillatory ventilation for acute respiratory distress syndrome - a pilot study. Crit. Care Med 1997; 25:937-47 ...
... experimental results using bench models of simple jet systems and systems using a tracheal tube designed for jet ventilation. ... A mathematical model has been developed to predict the peak airway pressure attainable during jet ventilation. The theory ... High-Frequency Jet Ventilation, Humans, Mathematics, Models, Biological, Pressure, Respiratory Physiological Phenomena, ... A mathematical model has been developed to predict the peak airway pressure attainable during jet ventilation. The theory ...
... frequency of high-frequency component; fNF = frequency of normal-frequency component; HFJV = high-frequency jet ventilation; ... frequency of high-frequency component; fNF = frequency of normal-frequency component; HFJV = high-frequency jet ventilation; ... Both superimposed high-frequency jet ventilation (SHFJV) and single-frequency (high-frequency) jet ventilation (HFJV) have been ... Frequency dependence of lung volume changes during superimposed high-frequency jet ventilation and high-frequency jet ...
High-frequency percussive ventilation and low tidal volume ventilation in burns: A randomized controlled trial. ... High-frequency percussive ventilation and low tidal volume ventilation in burns: A randomized controlled trial. ... High-frequency Percussive Ventilation for Severe Inhalation Injury Kenneth N. Hiller, M.D.; Kenneth N. Hiller, M.D. ... worsening oxygenation and ventilation ensued. High-frequency percussive ventilation (HFPV) was initiated to aid oxygenation, ...
... ... On the other hand, nasal high-frequency oscillatory ventilation (nHFOV) is particularly attractive in newborns, especially ... This, in turn, can limit lung ventilation and divert air into the digestive system, with potentially deleterious consequences. ... Background: We have previously shown that nasal pressure support ventilation (nPSV) can lead to an active inspiratory laryngeal ...
High Positive End-Expiratory Pressure During High-Frequency Jet Ventilation Improves Oxygenation and Ventilation in Preterm ... High-Frequency Jet Ventilation in Neonatal and Pediatric Subjects: A Narrative Review. Andrew G Miller 1, Renee M Bartle 2, ... High Frequency Jet Ventilation (HFJV) In Mature Infants With Non-Homogeneous Lung Disease And Severe Gas Trapping. Loughnan, ... High-frequency jet ventilation improves gas exchange in extremely immature infants with evolving chronic lung disease. Richard ...
Brooks CGJr; High frequency ventilation: whats all the flutter?. Crit Care Nurse 1 November 1982; 2 (6): 47-48. doi: https:// ...
High-frequency jet ventilation jets the way to minimally invasive carinal resection? ...
Transpulmonary pressure during high-frequency oscillation ventilation: Is it the culprit?. *M. Cressoni1 & ... High-frequency oscillation ventilation (HFOV) seems the perfect embodiment of the "open lung theory" as it suggests extremely ... Guervilly C, Forel JM, Hraiech S, Roch A, Talmor D, Papazian L. Effect of high-frequency oscillatory ventilation on esophageal ... Cressoni, M., Chiumello, D. Transpulmonary pressure during high-frequency oscillation ventilation: Is it the culprit?. Ann. ...
... high-frequency jet ventilation [HFJV, with a typical HFV frequency of (100 to 1 500) HFV inflations/min]; and • - high- ... high-frequency percussive ventilation [HFPV, with a typical HFV frequency of (60 to 1 000) HFV inflations/min]; • - ... frequency oscillatory ventilation [HFOV, with a typical HFV frequency of (180 to 1200) HFV inflations/min and typically having ... Terminology, definitions, semantics and their rationale for high-frequency ventilators as defined in ISO 80601-2-87:2021, ...
High-frequency oscillatory ventilation versus conventional ventilation in the respiratory management of term neonates with a ... 10.1007/s00431-022-04590-w Abstract Conventional mechanical ventilation (CMV) has been recommended ... High-frequency oscillatory ventilation versus conventional ventilation in the respiratory management of term neonates with a ... Research: High-frequency oscillatory ventilation versus conventional ventilation in the respiratory management of term neonates ...
Baseline measurements were obtained before and after induction of ARDS under volume controlled ventilation with PEEP 5. The ... Cardiac output, stroke volume, mean arterial pressure and intrathoracic blood volume index were significantly higher during ... Recent clinical studies have not shown an overall benefit of high-frequency oscillatory ventilation (HFOV), possibly due to ... conventional high frequency oscillatory ventilation group; HFOV PL, mean transpulmonary pressure guided high frequency ...
Some babies may get high-frequency ventilation. This continuous low-pressure ventilation helps reduce the lung damage. Not all ... These babies need oxygen in a higher concentration than whats in the air we breathe. Over time, the pressure from the ... A baby who has trouble growing might need a high-calorie formula. Formula feedings may be given alone or along with ... Babies who need care in a hospital for bronchopulmonary dysplasia may need feedings of high-calorie formulas through a ...
High-frequency ventilation High-frequency ventilation uses a breathing machine that sends small, quick puffs of air into your ... Thats the highest level possible.. We are the only hospital in the Pacific Northwest that provides 24/7 access to all the ... Masking and Visitation Changes: Due to high rates of respiratory illnesses in our community, weve made changes to our masking ... Sandra "Sunny" Juul co-leads a multicenter national study that uses high doses of the hormone erythropoietin (Epo) combined ...
Sampat H. "High Frequency Oscillatory Ventilation: What Is It? Does It Work?" Dept of Med Grand Rounds. Penn State M S Hershey ...
High frequency oscillatory ventilation. In postgraduate course: The physiology of pediatric respiratory failure. Presented at: ... Ventilation/Perfusion Matching. In postgraduate course: Pediatric Respiratory Physiology: Whats right and When it goes wrong. ... Clinical guidelines for mechanical ventilation. Newtown (PA): Handbooks in Healthcare; 2002.. 1999. Allen JL, Wohl MEB. Chest ...
Influence of endotracheal tube bore on tidal volume during high frequency oscillatory ventilation: a model lung study Osamu ...
High Frequency Ventilation * Inhaled Nitric Oxide * Medical Education * Newborn Care * Umbilical Arterial Line Insertion ...
  • High-frequency oscillatory ventilation (HFOV) employs a piston-driven device that allows both active inspiration and expiration and a bias flow system that delivers fresh gas to the patient. (rtmagazine.com)
  • Two new types of breathing machines (known as high frequency jet ventilation (HFJV) and high frequency oscillatory ventilation (HFOV)) have been tested in the hope that these methods of breathing support might reduce lung injury (CLD). (cochrane.org)
  • Two methods of HFV - high frequency oscillatory ventilation (HFOV) and high frequency jet ventilation (HFJV) - are widely used, but neither has demonstrated clear superiority in elective or rescue mode. (cochrane.org)
  • Objective High-frequency oscillatory ventilation (HFOV) is widely used in neonatology. (bmj.com)
  • When compared to conventional ventilation for patients with acute respiratory distress syndrome, high frequency oscillatory ventilation (HFOV) is associated with a reduction in mortality rate. (wfsahq.org)
  • High frequency oscillatory ventilation (HFOV) is an alternative form of mechanical ventilation that can be delivered on critical care units. (wfsahq.org)
  • On the other hand, nasal high-frequency oscillatory ventilation (nHFOV) is particularly attractive in newborns, especially since, unlike nPSV, it does not require synchronization with the patient's inspiratory efforts. (usherbrooke.ca)
  • high-frequency oscillatory ventilation [HFOV, with a typical HFV frequency of (180 to 1200) HFV inflations/min and typically having an active expiratory phase. (iso.org)
  • However, older studies suggested that protective high-frequency oscillatory ventilation (HFOV) with low-mean airway pressure (MAP) may limit lung injury. (cdhi.org)
  • Recent clinical studies have not shown an overall benefit of high-frequency oscillatory ventilation (HFOV), possibly due to injurious or non-individualized HFOV settings. (biomedcentral.com)
  • High frequency oscillatory ventilation (HFOV) is another approach to lung-protective ventilation, since it employs very low tidal volumes and very small changes in delta pressure [ 3 ] applied with higher continuous distending pressure (CDP). (biomedcentral.com)
  • Sampat H. "High Frequency Oscillatory Ventilation: What Is It? (massgeneral.org)
  • Two of these technologies are Intermittent Positive Pressure Ventilation (IPPV) and High Frequency Oscillatory (HFO) ventilation. (tudelft.nl)
  • 4) on high frequency oscillatory ventilation, and (5) in cot care. (who.int)
  • High-frequency oscillatory ventilation (HFOV) remains an option for the management of critically ill children when conventional mechanical ventilation fails. (bvsalud.org)
  • Using HFOV on adult patients with ARDS may be more effective than conventional mechanical ventilation. (rtmagazine.com)
  • The Dräger Babylog VN500 ventilator offers volume-guaranteed HFOV (HFOV-VG) mode when the high-frequency tidal volume (VThf) to be delivered can be set. (bmj.com)
  • Mean airway pressure (MAWP) is characteristically lower in HFOV compared to conventional ventilation. (wfsahq.org)
  • Increasing frequency (respiratory rate) of HFOV is associated with a fall in arterial CO2 concentration. (wfsahq.org)
  • Unlike conventional ventilation (CV), HFOV relies on the rapid delivery of tidal volumes that are smaller than dead space. (wfsahq.org)
  • HFOV utilises much higher frequencies than CV (120 - 600 breaths per minute versus up to 40 breaths per minute for CV). (wfsahq.org)
  • The principle goals for ventilating a patient with ARDS using HFOV are to prevent ventilator induced lung injury (VILI) and to achieve adequate ventilation and gas exchange with as low a fractional inspired oxygen concentration (FiO 2 ) as possible. (wfsahq.org)
  • High-frequency oscillation ventilation (HFOV) seems the perfect embodiment of the "open lung theory" as it suggests extremely low tidal volumes combined with very high mean airway pressures. (springeropen.com)
  • 2 ] explored in a small ARDS patient population (10 patients) the transpulmonary pressure during HFOV and conventional mechanical ventilation (CMV) to compare the range of TP occurring during the switch from CMV to an HFOV trial. (springeropen.com)
  • It may be objected that during HFOV the higher TP is applied during the whole respiratory cycle and not only during inspiration and so the average stress applied to the lung is greater. (springeropen.com)
  • The continuous distending pressure (CDP) during HFOV con was set at mean airway pressure plus 5 cmH 2 O. For HFOV P Lmean it was set at mean P L plus 5 cmH 2 O. Baseline measurements were obtained before and after induction of ARDS under volume controlled ventilation with PEEP 5. (biomedcentral.com)
  • Cardiac output, stroke volume, mean arterial pressure and intrathoracic blood volume index were significantly higher during HFOV P Lmean than during HFOV con at PEEP 20. (biomedcentral.com)
  • High-frequency ventilation is a type of mechanical ventilation which utilizes a respiratory rate greater than four times the normal value. (wikipedia.org)
  • High-frequency ventilation may be used alone, or in combination with conventional mechanical ventilation. (wikipedia.org)
  • In general, those devices that need conventional mechanical ventilation do not produce the same lung protective effects as those that can operate without tidal breathing. (wikipedia.org)
  • The next logical step was to use HFV in the pediatric intensive care unit (ICU), where HFV was compared to conventional mechanical ventilation. (rtmagazine.com)
  • Breathing machines providing what is known as conventional mechanical ventilation (CMV), which is currently used to support these babies, potentially contribute to longer-term lung injury known as chronic lung disease (CLD). (cochrane.org)
  • Despite widespread improvements in care, including increased utilization of antenatal steroids, use of surfactant replacement therapy, and advances in conventional mechanical ventilation (CMV), chronic lung disease (CLD) occurs in 42% of surviving preterm infants born at less than 28 weeks gestational age (GA). High frequency ventilation (HFV) aims to optimize lung expansion while minimizing tidal volume (Vt) to decrease lung injury. (cochrane.org)
  • The surgical intensive care unit (SICU) at the University of Michigan Health System (UMHS) specializes in the evaluation of adult patients with severe ARDS for advanced mechanical ventilation and possible extracorporeal membrane oxygenation (ECMO). (cdc.gov)
  • Despite ARDSNet goal-directed conventional mechanical ventilation, adequate muscle relaxation, and aerosolized pharmacotherapy of albuterol, acetylcysteine, and heparin, worsening oxygenation and ventilation ensued. (silverchair.com)
  • Conventional mechanical ventilation (CMV) has been recommended as the first-line mode of respiratory support for neonates born with a congenital diaphragmatic hernia (CDH). (cdhi.org)
  • Secondary outcomes were survival and duration of mechanical ventilation. (cdhi.org)
  • Center 2 patients required longer mechanical ventilation and sedation. (cdhi.org)
  • First-line mode of mechanical ventilation was not associated with the duration of oxygen therapy or survival in neonates with CDH. (cdhi.org)
  • Recommendations were given in favour of using the conventional mechanical ventilation in first intention in neonates with a congenital diaphragmatic hernia, since High frequency oscillation (HFO) has been associated with a higher morbidity. (cdhi.org)
  • No differences between HFO and conventional mechanical ventilation were observed concerning the length of oxygen supply and the survival. (cdhi.org)
  • Mechanical ventilation with high tidal volumes (V(T)) in contrast to mechanical ventilation with low V(T) has been shown to increase plasma levels of proinflammatory and antiinflammatory mediators in patients with acute lung injury. (nih.gov)
  • Plasma levels of proinflammatory and antiinflammatory mediators tumor necrosis factor, interleukin (IL)-6, IL-10, and IL-1 receptor antagonist were determined before and 1 h after the initiation of mechanical ventilation. (nih.gov)
  • IL-6, tumor necrosis factor, and IL-1 receptor antagonist did not change significantly after 1 h of mechanical ventilation. (nih.gov)
  • Initiation of mechanical ventilation for 1 h in patients without previous lung injury caused no consistent changes in plasma levels of studied mediators. (nih.gov)
  • Mechanical ventilation with high V(T) on ZEEP did not result in higher cytokine levels compared with lung-protective ventilatory strategies. (nih.gov)
  • Previous lunge damage seems to be mandatory to cause an increase in plasma cytokines after 1 h of high V(T) mechanical ventilation. (nih.gov)
  • We present a case of a 6 month old, ex premature patient with tracheomalacia and a long history of difficult weaning from mechanical ventilation after repeated surgeries under general anaesthesia. (ispub.com)
  • We present the successful use of the CobraPLUS (a new second generation CobraPLA™ extraglottic airway device) for anaesthetic management of a child who suffered from tracheomalacia necessitating prolonged mechanical ventilation during prior anaesthesia. (ispub.com)
  • After each of these procedures he was ventilated for prolonged periods of time making a total time of mechanical ventilation of 4 months. (ispub.com)
  • This condition is becoming an increasingly recognized clinical entity that often requires prolonged intubation and mechanical ventilation. (ispub.com)
  • Beyond sepsis-induced inflammation, a mechanical ventilation regimen can also propagate ventilator-related injury that may precipitate ARDS. (ceufast.com)
  • Data extracted included (i) patient demography (age and gender), (ii) clinical characteristics including vaccination status and presence of co-morbidities, (iii) clinical management including the use of sequential organ failure assessment (SOFA) scores, oxygen requirement, use of mechanical ventilation, and (iv) disease outcomes including length of hospital and intensive care unit (ICU) admission, recovery, complications with sequelae, or death. (bvsalud.org)
  • Medical records were reviewed to determine survival to PICU discharge, duration of PICU admission and duration of mechanical ventilation. (bvsalud.org)
  • Survival analysis was used to determine the association between HIV infection/exposure with mortality, and linear regression was used to examine the association with length of stay and duration of mechanical ventilation. (bvsalud.org)
  • Both HIV-EU and HIV-U children had significantly shorter PICU admissions and fewer days of mechanical ventilation compared with HIV-infected children (p=0.011 and p=0.004, respectively). (bvsalud.org)
  • HIV-EU children behaved similarly to HIV-U children in terms of mortality, duration of PICU admission and length of mechanical ventilation. (bvsalud.org)
  • HIV infection was associated with prolonged length of mechanical ventilation and ICU stay but not increased mortality. (bvsalud.org)
  • On postnatal day 28, when the child and dexamethasone treatment were riorated clinically and repeated radiog- had been on mechanical ventilation, a administered, the infant did not tolerate raphy revealed lobar emphysema on the right pneumothorax developed. (who.int)
  • During the weaning process of mechanical ventilation, alterations occur in the autonomic activity. (bvsalud.org)
  • To analyze the behavior of cardiac autonomic modulation in different phases of weaning mechanical ventilation. (bvsalud.org)
  • The present study showed that in comparison with spontaneous breathing, controlled breathing was associated with lower HRV during weaning from mechanical ventilation. (bvsalud.org)
  • With conventional ventilation where tidal volumes (VT) exceed dead space(VDEAD), gas exchange is largely related to bulk flow of gas to the alveoli. (wikipedia.org)
  • The Bunnell Life Pulse High-Frequency Ventilator is also indicated for use in ventilating critically ill infants with respiratory distress syndrome (RDS) complicated by pulmonary air leaks who are, in the opinion of their physicians, failing on conventional ventilation. (wikipedia.org)
  • The adverse side effects noted during the use of high-frequency ventilation include those commonly found during the use of conventional positive pressure ventilators. (wikipedia.org)
  • All 10 patients were referred to the SICU because of severe hypoxemia, ARDS, and an inability to achieve adequate oxygenation with conventional ventilation modalities. (cdc.gov)
  • This allows the use of tidal volumes that with conventional ventilation would lead to rising CO 2 levels. (wfsahq.org)
  • Conventional ventilation was reinstituted with extubation shortly thereafter. (silverchair.com)
  • Consequently, conventional precepts of dead space and effective alveolar ventilation have limited application to high-frequency ventilation in which diffusion becomes the principle means of gas exchange. (silverchair.com)
  • A recent prospective, randomized controlled clinical trial of burn patients with inhalation injury compared conventional low tidal volume ventilation with HFPV. (silverchair.com)
  • however, a statistically greater proportion (29% vs . 6%) of the conventional ventilation group failed to meet oxygenation or ventilation goals and required an alternate rescue modality. (silverchair.com)
  • The authors hypothesized that, in patients without previous lung injury, a conventional potentially injurious ventilatory strategy with high V(T) and zero end-expiratory pressure (ZEEP) will not cause a cytokine release into systemic circulation. (nih.gov)
  • They are common selective ventilation of the unaffected A misdiagnosis of pneumothorax in preterm neonates with RDS during lung with conventional ventilation, should be avoided. (who.int)
  • Usage of high-frequency jet ventilation is recommended in neonates and adults with severe lung injury. (wikipedia.org)
  • Skin-to-skin care alters regional ventilation in stable neonates. (edu.au)
  • Neonates with an initial PCO(2) >34 or need HFO pre-operatively should be excluded from attempts to repair the CDH thoracoscopically based on their higher potential need for PC with its entailed technical difficulty and increased operative time. (mcmaster.ca)
  • Additional calories are needed for growth, with the smallest neonates tending to demonstrate the greatest need, as their growth rate is highest. (medscape.com)
  • HFJV minimizes movement of the thorax and abdomen and facilitates surgical procedures where even slight motion artifact from spontaneous or intermittent positive pressure ventilation may significantly affect the duration and success of the procedure (for example atrial fibrillation ablation). (wikipedia.org)
  • High-frequency jet ventilation (HFJV) is provided by the Bunnell Life Pulse High-Frequency Ventilator. (wikipedia.org)
  • High-frequency percussive ventilation and low tidal volume ventilation in burns: A randomized controlled trial. (silverchair.com)
  • Commercially available high-frequency ventilators are used in pediatric and neonatal ICUs around the world. (rtmagazine.com)
  • Whether it's invasive or non-invasive ventilation, Servo-n has all the ventilation modes you need to deliver high-end neonatal or pediatric care, including a unique therapy (NAVA) for personalized respiratory treatments. (getinge.com)
  • Getinge Servo-n offers ONE versatile solution for respirator support, monitoring and treatment of neonatal and pediatric patients - for every stage of ventilation. (getinge.com)
  • Rodents like the rat are in general more sensitive compared to humans as the rat's ventilation frequency is higher. (europa.eu)
  • Higher mean airway pressure (MAWP) - The continuously high distending pressure provides improved oxygenation via improved alveolar recruitment. (wfsahq.org)
  • High-frequency percussive ventilation (HFPV) was initiated to aid oxygenation, mechanics, and secretion clearance. (silverchair.com)
  • The Bunnell Life Pulse High-Frequency Ventilator is indicated for use in ventilating critically ill infants with pulmonary interstitial emphysema (PIE). (wikipedia.org)
  • and b) the convective flow cost necessary to achieve a unit of alveolar ventilation. (nih.gov)
  • Simple solutions for each of these cost functions were formulated using established models of gas exchange and lung mechanics, including the effects of lung inflation tidal volume and respiratory frequency in alveolar ventilation, nonlinear lung tissue compliance, and alveolar recruitment and derecruitment. (nih.gov)
  • therefore, the ventilation was supported by using the Narcomed 6400's Synchronized Intermittent Mandatory Ventilation mode with a respiratory rate of 20 bpm. (ispub.com)
  • The subjects were kept in supine Fowler's position t, ventilating for 10 minutes in the assist-controlled (A/C) ventilation mode the synchronized intermittent mandatory ventilation (SIMV) mode, pressure support ventilation (PSV) 18 and 10, and with nebulization through a T-piece. (bvsalud.org)
  • A high pressure "jet" of gas flows out of the adaptor and into the airway. (wikipedia.org)
  • Peak airway pressure during high frequency jet ventilation: theory and measurement. (ox.ac.uk)
  • A mathematical model has been developed to predict the peak airway pressure attainable during jet ventilation. (ox.ac.uk)
  • Due to the patient's history of prolonged ventilation following each surgery, we decided to use an extraglottic device for his airway management and we specifically chose the new CobraPLUS™ airway (Engineered Medical Systems, Indianapolis, IN). (ispub.com)
  • Transpulmonary pressure during high-frequency oscillation ventilation: Is it the culprit? (springeropen.com)
  • These adverse effects include: Pneumothorax Pneumopericardium Pneumoperitoneum Pneumomediastinum Pulmonary interstitial emphysema Intraventricular hemorrhage Necrotizing tracheobronchitis Bronchopulmonary dysplasia High-frequency jet ventilation is contraindicated in patients requiring tracheal tubes smaller than 2.5 mm ID. (wikipedia.org)
  • Babies who need care in a hospital for bronchopulmonary dysplasia may need feedings of high-calorie formulas through a gastrostomy tube (G-tube) . (kidshealth.org)
  • Total liquid ventilation for bronchopulmonary dysplasia prevention in a model of extreme preterm lamb. (usherbrooke.ca)
  • Preductal and postductal oxygen saturation measurements via pulse oximetry will often show a 10% or higher gradient difference, which is dependent on the magnitude of left-to-right shunting at the foramen ovale (with preductual saturations being higher). (medscape.com)
  • Arterial blood gas levels (through an indwelling line [eg, umbilical arterial catheter or preductal peripheral arterial line]): To assess the pH, partial pressure of carbon dioxide (PaCO 2 ) and the partial pressure of oxygen (PaO 2 ) which might be higher in the preductal arterial line. (medscape.com)
  • These babies need oxygen in a higher concentration than what's in the air we breathe. (kidshealth.org)
  • Over time, the pressure from the ventilation and extra oxygen intake can injure a newborn's delicate lungs. (kidshealth.org)
  • Non‐invasive ventilation or high flow nasal cannulae should be considered in children and adolescents with hypoxaemia or respiratory distress unresponsive to low flow oxygen if appropriate infection control measures can be used. (mja.com.au)
  • [11] And if the babies need precis volume-targeted ventilation, PRVC (Pressure Regulated Volume Control) is there for you. (getinge.com)
  • 1 HFPV produces small, high-frequency gas pulses that accumulate to form low-frequency tidal volume breaths in the apneic, motionless lung. (silverchair.com)
  • When the lungs are in a derecruited state, the combinations of frequency, PEEP, and tidal volume that yield adequate ventilation with safe distention of recruited alveoli are severely limited. (nih.gov)
  • these include prone positioning, partial liquid ventilation, extracorporeal life support (ECLS), inhaled nitric oxide, and high-frequency ventilation (HFV). (rtmagazine.com)
  • Large tidal volume and low frequency ventilation result in (i) better ventilation of dependent well-perfused alveoli which improves V/Q matching (small area of alveolar dead space as above in figure I). (ii) Gas emptying from slow alveoli to reach the mouth, whereas it would have remained in the airways with small frequent breaths. (capnography.com)
  • Under these circumstances the low V/Q areas (alveoli with higher PC02) make a more substantial contribution to the gas exchange. (capnography.com)
  • With high-frequency ventilation, the tidal volumes used are smaller than anatomical and equipment dead space and therefore alternative mechanisms of gas exchange occur. (wikipedia.org)
  • High frequency ventilation is thought to reduce ventilator-associated lung injury (VALI), especially in the context of ARDS and acute lung injury. (wikipedia.org)
  • Studies have shown higher survival rates for patients in these groups with acute respiratory distress syndrome (ARDS). (wfsahq.org)
  • Anyway, the absolute TP values, whatsoever computed, are few cmH 2 O higher than during CMV and similar to the ones published at 15 cmH 2 O PEEP in ARDS patients during CMV. (springeropen.com)
  • Optimal PEEP is used to maintain alveolar inflation and promote ventilation-to-perfusion matching. (wikipedia.org)
  • The model predicted that for variables applicable to an infant with respiratory distress syndrome, the selection of positive end-expiratory pressure (PEEP) becomes critical because the penalties in pressure cost are amplified for both high and low values of PEEP. (nih.gov)
  • This analysis illustrates the importance of using high-frequency ventilation in infant respiratory distress syndrome and of optimizing the amount of PEEP. (nih.gov)
  • High-frequency jet ventilation jets the way to minimally invasive carinal resection? (amegroups.org)
  • If Nasal CPAP is not enough to support babies on non-invasive ventilation, NIV NAVA® offers a viable alternative. (getinge.com)
  • Edi makes it possible to follow the patient's progress from invasive to non-invasive ventilation (NIV) and beyond on the same machine. (getinge.com)
  • The argument runs that we have to account for mortality in a high mortality setting, such as a very preterm population, because an effect on death might mask the effect of the intervention on other outcomes, if the risk of death is different in the two groups. (bmj.com)
  • CONCLUSIONS: Higher concentrations of MMP-8 are found in BAL fluid from preterm babies from pregnancies complicated by chorioamnionitis. (bvsalud.org)
  • Background: We have previously shown that nasal pressure support ventilation (nPSV) can lead to an active inspiratory laryngeal narrowing in lambs. (usherbrooke.ca)
  • Due to the rare incidence, wide spectrum of clinical manifestations, and high mortality rate, clinicians must maintain a high index of suspicion for LCH. (thieme-connect.de)
  • This is commonly referred to as lung protective ventilation. (wikipedia.org)
  • There are two distinct types of high- frequency ventilators: jet and oscillator. (rtmagazine.com)
  • High-frequency jet ventilators inject a pulsed flow of gas at very high rates directly into the lungs. (rtmagazine.com)
  • Terminology, definitions, semantics and their rationale for high-frequency ventilators as defined in ISO 80601-2-87:2021, Medical electrical equipment-Part 2-87: Particular requirements for basic safety and essential performance of high-frequency ventilators. (iso.org)
  • LILACS, MEDLINE y Biblioteca Virtual en Salud, utilizándose combinaciones entre los términos controlados newborn, COVID-19, SARS-CoV-2. (bvsalud.org)
  • Solutions to these models were combined to assess the total pressure cost of high-frequency ventilation as a function of the ventilatory settings and the pathophysiologic variables of the patient. (nih.gov)
  • The theory assumes inviscid and incompressible flow and agrees closely with experimental results using bench models of simple jet systems and systems using a tracheal tube designed for jet ventilation. (ox.ac.uk)
  • The culprit has not been identified, and a possible cause is the effect of increased intrathoracic pressures on the right ventricle and very high intrathoracic pressures which act as an obstacle to blood flow [ 1 ]. (springeropen.com)
  • Flow resistance plays a significant role at higher ventilation frequencies. (biologists.com)
  • Sur 220 patients admis dans l'unité de soins intensifs en chirurgie, auxquels une sonde nasogastrique avait été posée pendant plus de 24 heures, 68 cas se sont vu administrer du métoclopramide par voie orale (10 mg toutes les 8 heures) et 152 patients témoins n'ont rien reçu. (who.int)
  • The hospital also serves as the regional referral center for high-risk maternal care and fetal therapy, providing physicians and hospitals with access to the highest level of resources. (chp.edu)
  • Understanding the pressure cost of ventilation: why does high-frequency ventilation work? (nih.gov)
  • This continuous low-pressure ventilation helps reduce the lung damage. (kidshealth.org)
  • Barotrauma has also reportedly been caused by an airbag rupturing during deployment, forcing high-pressure gas into a person's lungs. (medscape.com)