Analytical, Diagnostic and Therapeutic Techniques and EquipmentPhenomena and ProcessesHealth Care
High-Frequency VentilationHigh-Frequency Jet VentilationVentilationRespiration, ArtificialPulmonary VentilationTidal VolumeIntermittent Positive-Pressure Ventilation
OscillatoryHFOVMechanicalConventionalNeonatesHFJVTidal volume ventilationNeonatalOxygenationIntermittent Mandatory VentilationAirwayInfantsOscillationOxygenVolume-targeted VentilationPulmonaryPercussiveHumansHFPVAdequate ventilationLiquid ventilationAlveoliVolumesARDSBronchopulmonary dysplasiaPEEPPretermNasalMortality rateLung protectiveVentilatorsInvasiveVentilatoryFlowPatientsPressureLimit lungAlveolar recruitment
Oscillatory15
  • 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)
HFOV12
  • 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)
Mechanical35
  • 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)
Conventional11
  • 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)
Neonates3
HFJV2
  • 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)
Tidal volume ventilation1
Neonatal3
  • 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)
Oxygenation2
  • 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)
Intermittent Mandatory Ventilation2
  • 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)
Airway4
  • 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)
Infants1
  • The Bunnell Life Pulse High-Frequency Ventilator is indicated for use in ventilating critically ill infants with pulmonary interstitial emphysema (PIE). (wikipedia.org)
Oscillation1
  • Transpulmonary pressure during high-frequency oscillation ventilation: Is it the culprit? (springeropen.com)
Oxygen5
  • 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)
Volume-targeted Ventilation1
  • [11] And if the babies need precis volume-targeted ventilation, PRVC (Pressure Regulated Volume Control) is there for you. (getinge.com)
Pulmonary1
  • 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)
Percussive2
Humans1
  • Rodents like the rat are in general more sensitive compared to humans as the rat's ventilation frequency is higher. (europa.eu)
HFPV1
  • 1 HFPV produces small, high-frequency gas pulses that accumulate to form low-frequency tidal volume breaths in the apneic, motionless lung. (silverchair.com)
Adequate ventilation1
  • 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)
Liquid ventilation2
Alveoli2
  • 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)
Volumes1
ARDS3
  • 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)
Bronchopulmonary dysplasia1
  • 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)
PEEP3
  • 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)
Preterm2
  • 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)
Nasal2
  • Background: We have previously shown that nasal pressure support ventilation (nPSV) can lead to an active inspiratory laryngeal narrowing in lambs. (usherbrooke.ca)
  • If Nasal CPAP is not enough to support babies on non-invasive ventilation, NIV NAVA® offers a viable alternative. (getinge.com)
Mortality rate1
  • 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)
Lung protective1
Ventilators3
  • 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)
Invasive2
  • High-frequency jet ventilation jets the way to minimally invasive carinal resection? (amegroups.org)
  • 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)
Ventilatory1
  • 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)
Flow4
  • and b) the convective flow cost necessary to achieve a unit of alveolar ventilation. (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)
Patients1
  • 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)
Pressure3
Limit lung1
  • This, in turn, can limit lung ventilation and divert air into the digestive system, with potentially deleterious consequences. (usherbrooke.ca)
Alveolar recruitment1
  • 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)