Pulmonary ventilation. Medical search. Frequent questions

In patients with acute exacerbations of chronic obstructive pulmonary disease, noninvasive ventilation may be used in an attempt to avoid endotracheal intubation and complications associated with mechanical ventilation. (nih.gov)
The use of noninvasive positive pressure ventilation (NPPV) is often employed for the management of acute respiratory failure as an alternative to endotracheal intubation and mechanical ventilation. (lww.com)
A limited number of observational studies have reported that noninvasive ventilation (NIV) can be an effective treatment to support breathing and to prevent use of invasive mechanical ventilation in these patients. (nih.gov)
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)
This article reviews assisted ventilation of the newborn, highlighting the concepts of pulmonary mechanics, gas exchange, respiration control, and lung injury that can be used to enhance conventional mechanical ventilation (CMV) so as to improve survival and reduce adverse effects. (medscape.com)
Sound application of these concepts is necessary to optimize mechanical ventilation. (medscape.com)
Hypercapnia secondary to severe V/Q mismatch may be treatable with conventional mechanical ventilation (CMV) or may require high-frequency ventilation (HFV). (medscape.com)
94%, requirement for noninvasive ventilation or endotracheal intubation with older, hospitalized veterans with high prevalences of underly- mechanical ventilation, or chest radiograph or computed tomography ing conditions suggest the importance of booster doses to help pulmonary findings consistent with pneumonia. (cdc.gov)
This method provided the means to monitor and optimize lung volume continuously, non-invasively and without interruption of ventilation during mechanical ventilation. (gu.se)
This book is an introduction to a comprehensive analysis of recent advances and clinical research in noninvasive mechanical ventilation (NIV) in Pulmonary, Critical Care, and Sleep Medicine. (downloadmedicalbook.com)
In this line, the book offers to the readers, who are seeking the latest recommendations, the future research directions in noninvasive mechanical ventilation. (downloadmedicalbook.com)
Table of contents describe and analyze, the items trend setters in noninvasive ventilation, organized in three main sections, "pulmonary", "critical care" and "sleep medicine", using the primary keyword related with term "noninvasive mechanical ventilation" as search term associated with "secondary keywords" studies from a period of 2018 to 2019. (downloadmedicalbook.com)
This searching methodology and analysis define this unique book to the approach in noninvasive mechanical ventilation for best clinical practice, research, clinical study designs and critical analysis, how noninvasive ventilation is current and trending. (downloadmedicalbook.com)
PARTIAL liquid ventilation (PLV), combining the intrapulmonary instillation of perfluorocarbons in volumes up to the lung's functional residual capacity with conventional mechanical gaseous ventilation (GV), 1 is a new therapeutic strategy to improve gas exchange and ventilation-perfusion distribution in patients with acute respiratory distress syndrome. (silverchair.com)
Historically, mechanical ventilation was initiated with a tidal volume based on a patient's actual body weight, which was believed to reflect metabolic need. (biomedcentral.com)
In recent years, intraoperative lung-protective mechanical ventilation (LPV) has been reportedly able to attenuate ventilator-induced lung injuries (VILI). (springer.com)
Lung protective mechanical ventilation significantly improved intraoperative pulmonary oxygenation function and pulmonary compliance in patients experiencing various abdominal laparoscopic surgeries, but it could not ameliorate early postoperative atelectasis and oxygenation function on the first day after surgery. (springer.com)

Only a low dose of inhaled nitric oxide was needed, 5 ppm or less, which also concomitantly improved oxygenation in postoperative pulmonary hypertension in children. (gu.se)
Objective To evaluate the association between pressure -controlled ventilation -volume guaranteed (PCV-VG) mode and volume-controlled ventilation (VCV) mode on postoperative pulmonary complications (PPCs) in patients undergoing thoracoscopic lung resection. (bvsalud.org)
Pneumoperitoneum and Trendelenburg position in laparoscopic surgeries could contribute to postoperative pulmonary dysfunction. (springer.com)

The method allows recognition of V/P pattern typical for PE, the sign of chronic obstructive pulmonary disease (COPD), pneumonia, left heart failure (LHF), chronic PE, and suspicion of other parenchymal processes like tumors. (lu.se)
A total of 85 patients were recruited from a larger group of 275 patients with chronic obstructive pulmonary disease admitted to the intensive care units in the same period. (nih.gov)
In selected patients with acute exacerbations of chronic obstructive pulmonary disease, noninvasive ventilation can reduce the need for endotracheal intubation, the length of the hospital stay, and the in-hospital mortality rate. (nih.gov)
The detailed mechanisms of oxygen-induced hypercapnia were examined in 22 patients during an acute exacerbation of chronic obstructive pulmonary disease. (atsjournals.org)
The course of chronic obstructive pulmonary disease (COPD) is characterized by acute exacerbations, commonly requiring hospital admission and often associated with the development of respiratory failure. (atsjournals.org)
BACKGROUND: Non-invasive ventilation (NIV) is an evidence-based treatment for acute respiratory failure in chronic obstructive pulmonary disease (COPD). (rug.nl)
This situation may occur at high altitude or during respiratory diseases, including chronic obstructive pulmonary disease, sleep apnoea and fibrosis, and during failure of ventilation due to neurological diseases. (ersjournals.com)
Chronic obstructive pulmonary disease (COPD) Neuromuscular diseases or interstitial lung disease Malformed vascular system such as an anomalous coronary artery[citation needed] Hypoxemic hypoxia is a lack of oxygen caused by low oxygen tension in the arterial blood, due to the inability of the lungs to sufficiently oxygenate the blood. (wikipedia.org)
Chronic obstructive pulmonary disease is currently the fourth leading cause of death in the world. (thoracrespract.org)
Pulmonary rehabilitation is recommended for chronic obstructive pulmonary disease. (thoracrespract.org)
This study aimed to evaluate the effects of non-invasive ventilation, supplemental oxygen, and exercise training and supplemental oxygen during exercise training during pulmonary rehabilitation practice in comparison with only exercise training on lung functions, blood gases, lactate levels, respiratory muscle pressures, dyspnea, walking distances, quality of life, and depression in patients with severe chronic obstructive pulmonary disease. (thoracrespract.org)
We hypothesize that controlled ventilation is feasible in patients with hypercapnic chronic obstructive pulmonary disease. (rcjournal.com)
Effects of the administration of O2 on ventilation and blood gases in patients with chronic obstructive pulmonary disease during acute respiratory failure. (ox.ac.uk)
Chronic Obstructive Pulmonary Disease (COPD) Chronic obstructive pulmonary disease is persistent narrowing (blocking, or obstruction) of the airways occurring with emphysema, chronic obstructive bronchitis, or both disorders. (msdmanuals.com)
Long-Term Noninvasive Ventilation in Chronic Stable Hypercapnic Chronic Obstructive Pulmonary Disease. (bvsalud.org)
Research Priorities in Pathophysiology for Sleep-disordered Breathing in Patients with Chronic Obstructive Pulmonary Disease. (bvsalud.org)

The significant increase in wasted ventilation (alveolar dead space) in the R group only may be secondary to the higher carbon dioxide tension, perhaps related to bronchodilatation. (atsjournals.org)
Pulmonary venoarterial shunts and alveolar hypoventilation result in V/Q mismatch, which is probably the most important mechanism of gas exchange impairment in infants with respiratory failure due to various causes, including respiratory distress syndrome (RDS). (medscape.com)
Gas exchange occurs in the lungs between alveolar air and the blood of the pulmonary capillaries. (statpearls.com)
Ventilation (V) refers to the flow of air into and out of the alveoli, while perfusion (Q) refers to the flow of blood to alveolar capillaries. (statpearls.com)
The control of opening or closing of alveoli to regulate ventilation occurs at the alveolar duct. (statpearls.com)
Deoxygenated blood from the pulmonary arteries has a PVO2 of 40 mmHg, and alveolar air has a PAO2 of 100 mmHg, resulting in a movement of oxygen into capillaries until arterial blood equilibrates at 100 mmHg (PaO2). (statpearls.com)
Hypoxic pulmonary vasoconstriction (HPV), also known as the von Euler-Liljestrand mechanism, is an essential response of the pulmonary vasculature to acute and sustained alveolar hypoxia. (ersjournals.com)
During local alveolar hypoxia, HPV matches perfusion to ventilation to maintain optimal arterial oxygenation. (ersjournals.com)
In contrast, during global alveolar hypoxia, HPV leads to pulmonary hypertension. (ersjournals.com)
Hypoxic pulmonary vasoconstriction (HPV), also known as the von Euler-Liljestrand mechanism, is an intrinsic mechanism of the pulmonary vasculature in response to alveolar hypoxia, to match ventilation to perfusion and optimise pulmonary gas exchange ( figure 1 ). (ersjournals.com)
Acute exposure to higher vapor concentrations may cause severe pulmonary edema and injury to the alveolar walls of the lung and death. (cdc.gov)
Significant exposure to methyl isocyanate vapors would most likely be the result of accidental release of methyl isocyanate to the air such as occurred in Bhopal, India in 1984, where the primary effect was pulmonary edema with some alveolar wall destruction. (cdc.gov)
Causes include hypoventilation, impaired alveolar diffusion, and pulmonary shunting. (wikipedia.org)
Children with acute respiratory failure and disturbed vascular/alveolar relation with atelectases and ventilation/perfusion mismatch with major pulmonary shunt.New methods to provide better ventilation and oxygenation have been developed over the last few years. (gu.se)
The effect of high frequency oscillatory ventilation (HFOV) and partial liquid ventilation (PLV) on alveolar recruitment and response to iNO. (gu.se)
Respiratory inductive plethysmography during dynamic ventilatory changes on high frequency oscillatory ventilation and on conventional ventilation (CV) as a new continuous and non-invasive method to optimize alveolar recruitment without interrupting ventilation. (gu.se)
The primary endpoints were the changes in the ratio of PaO 2 to FiO 2 (P/F). The secondary endpoints were the differences between the two groups in PaO 2 , alveolar-arterial oxygen gradient (A-aO 2 ), intraoperative pulmonary mechanics and the incidence of atelectasis detected on chest x-ray on the first postoperative day. (springer.com)

Ventilation/perfusion single photon emission computed tomography (V/P SPECT) is the recommended method for proper diagnosis of pulmonary embolism (PE), according to the European Association of Nuclear Medicine (EANM) guidelines. (lu.se)
The main aim of the scan is to find out for any evidence of blood clots in the lungs (pulmonary embolism). (netmeds.com)
Pulmonary embolism is still a challenge in diagnosis due to its variable and nonspecific symptoms. (uimr.ba)
Computed tomography and ventilation/perfusion scanning are the modalities most commonly used in the diagnosis of pulmonary embolism, and both modalities have their advantages and disadvantages. (uimr.ba)
One of the most important factors in the assessment and localization of pulmonary embolism is the diagnostic accuracy of these modalities, which serves to model different diagnostic strategies in the diagnosis of pulmonary embolism. (uimr.ba)
We can conclude that the application of ventilation/perfusion scanning in the diagnosis of pulmonary embolism is a little more accurate compared to computed tomography. (uimr.ba)
Ventilation/perfusion lung scanning will more accurately identify healthy individuals while on the other hand we can conclude that computed tomography is more accurate in diagnosing embolism in sick individuals. (uimr.ba)
Paraganlija N, Bajrović J, Julardžija F, Šehić A. Comparison of computed tomography in relation to ventilation perfusion scan in the diagnosis of pulmonary embolism. (uimr.ba)
Pulmonary Embolism in Covid-19: Coagulation Parameters, Close Monitoring to Prevent? (thoracrespract.org)
We refer to the recent Invited Perspective which proposes that there is now a reduced role for V/Q scintigraphy in the detection of pulmonary embolism (PE) given the emergence of CT pulmonary angiography (CTPA) ( 1 ). (snmjournals.org)

We added heliox based on its known pulmonary effects, and inhaled nitric oxide to improve oxygenation, after echocardiographic evidence of high right-ventricular pressure. (rcjournal.com)
The aims of the present thesis were to assess:· The effect of inhaled nitric oxide (iNO), a selective pulmonary vasodilator, on pulmonary hypertension and oxygenation in dose-response studies. (gu.se)
It has been proposed that partial liquid ventilation (PLV) causes a compression of the pulmonary vasculature by the dense perfluorocarbons and a subsequent redistribution of pulmonary blood flow from dorsal to better-ventilated middle and ventral lung regions, thereby improving arterial oxygenation in situations of acute lung injury. (silverchair.com)
Our objectives were to test the hypothesis that LPV could improve intraoperative oxygenation function, pulmonary mechanics and early postoperative atelectasis in laparoscopic surgeries. (springer.com)
We tested the hypothesis that the lung-protective ventilation strategy including a low tidal volume, an appropriate level of PEEP and periodic recruitment maneuvers could improve intraoperative oxygenation function, pulmonary mechanics, and early postoperative atelectasis. (springer.com)
Many patients required supplemental oxygen, some required assisted ventilation and oxygenation, and some were intubated. (cdc.gov)

In addition, the frequency of complications was significantly lower in the noninvasive-ventilation group (16 percent vs. 48 percent, P = 0.001), and the mean (+/- SD) hospital stay was significantly shorter for patients receiving noninvasive ventilation (23 +/- 17 days vs. 35 +/- 33 days, P = 0.005). (nih.gov)
Intraoperative Ventilation Strategies to Reduce Pulmonary Complications in Obese Patients-Reply. (tropmedres.ac)
Generalized hypoxia occurs in healthy people when they ascend to high altitude, where it causes altitude sickness leading to potentially fatal complications: high altitude pulmonary edema (HAPE) and high altitude cerebral edema (HACE). (wikipedia.org)
The minute ventilation/carbon dioxide output (VE/VCO2) slope has proven to be a predictor of surgical complications and mortality. (cpxinternational.com)

Non-invasive positive-pressure ventilation (NIPPV) added to supplemental oxygen during exercise training was associated with better physiological adaptations than other modalities. (thoracrespract.org)
Noninvasive positive-pressure ventilation (NPPV) unloads respiratory muscles. (rcjournal.com)

We describe the combined use of inhaled nitric oxide and heliox (79% helium and 21% oxygen) as a rescue therapy for a critically ill infant with localized interstitial pulmonary emphysema and pulmonary hypertension. (rcjournal.com)
Under these conditions, HPV can increase pulmonary vascular resistance and subsequently right heart afterload and may lead, in concert with pulmonary vascular remodelling processes, to fixed pulmonary hypertension and right heart insufficiency. (ersjournals.com)
Understanding HPV may help us to develop therapeutic strategies for impaired gas exchange due to attenuated HPV, as well as for pulmonary hypertension due to generalised HPV. (ersjournals.com)
Pulmonary hypertension leading to hypoxemia is a potentially life-threatening condition in pediatric intensive care. (gu.se)
Hypoxemia may also result from conditions not primarily related to pulmonary hypertension. (gu.se)
The pediatric patients with these symptoms are:· Children after surgery on cardiopulmonary bypass with pulmonary hypertension attributable to congenital heart defects with high pulmonary blood flow. (gu.se)
Newborns with persistent pulmonary hypertension as a symptom of fetal illness or malformation or after a relapse into fetal circulation without obvious reason. (gu.se)
Follow up after iNO treatment showed residual pulmonary hypertension in cardiac but not in lung patients. (gu.se)
persistent pulmonary hypertension of the newborn. (gu.se)
Pulmonary hypertension is high blood pressure in your pulmonary arteries, which carry oxygen-poor blood from your heart to your lungs. (clevelandclinic.org)
Pulmonary hypertension causes your pulmonary arteries to become narrow. (clevelandclinic.org)
What is pulmonary hypertension? (clevelandclinic.org)
Pulmonary hypertension (PH) is a general diagnosis that means you have high blood pressure in your pulmonary arteries . (clevelandclinic.org)
Pulmonary hypertension has many different causes. (clevelandclinic.org)
Pulmonary hypertension is dangerous because it disrupts the flow of blood through your heart and lungs . (clevelandclinic.org)
How does pulmonary hypertension affect my body? (clevelandclinic.org)
Without treatment, pulmonary hypertension can overtax your heart and eventually be fatal. (clevelandclinic.org)
Because pulmonary hypertension can affect your entire body, it's essential that you're diagnosed and treated as early as possible. (clevelandclinic.org)
What are the different types of pulmonary hypertension? (clevelandclinic.org)
The World Health Organization (WHO) divides pulmonary hypertension into five groups based on its cause. (clevelandclinic.org)
Who does pulmonary hypertension affect? (clevelandclinic.org)
Pulmonary hypertension can affect adults at any age. (clevelandclinic.org)
This is called persistent pulmonary hypertension of the newborn (PPHN) . (clevelandclinic.org)
How common is pulmonary hypertension? (clevelandclinic.org)
Some types of PH are rare, such as pulmonary arterial hypertension (PAH) and PH caused by blood clots. (clevelandclinic.org)

Relations between ventilator-controlled variables (shaded circles) and pulmonary mechanics (unshaded circles) that determine minute ventilation during pressure-limited time-cycled ventilation. (medscape.com)
Effects of a high-intensity pulmonary rehabilitation program on the minute ventilation/carbon dioxide output slope during exercise in a cohort of patients with COPD undergoing lung resection for non-small cell lung cancer. (cpxinternational.com)

Individual alveoli have variable degrees of ventilation and perfusion in different regions of the lungs. (statpearls.com)
Collective changes in ventilation and perfusion in the lungs are measured clinically using the ratio of ventilation to perfusion (V/Q). Changes in the V/Q ratio can affect gas exchange and can contribute to hypoxemia. (statpearls.com)
A VQ scan is a short form for Lung or Pulmonary Ventilation (V) and Perfusion (Q) Scans, which is an imaging test that determines air and blood flow into the lungs. (netmeds.com)
A ventilation scan measures how much air moves in and out of your lungs. (netmeds.com)
A ventilation-perfusion (VQ) scan is a nuclear medicine imaging test that uses a small amount of radioactive material to determine airflow (ventilation) and blood flow(perfusion) in the lungs. (netmeds.com)
Pulmonary function tests are a group of tests that measure breathing and how well the lungs are functioning. (medlineplus.gov)
Generalised, or hypoxic hypoxia may be caused by: Hypoventilation - insufficient ventilation of the lungs due to any cause (fatigue, excessive work of breathing, barbiturate poisoning, pneumothorax, sleep apnea etc. (wikipedia.org)
Pulmonary hypoxia is hypoxia from hypoxemia due to abnormal pulmonary function, and occurs when the lungs receive adequately oxygenated gas which does not oxygenate the blood sufficiently. (wikipedia.org)
High blood pressure in your pulmonary arteries forces your heart to work harder to send oxygen-poor blood to your lungs. (clevelandclinic.org)
Less blood can flow through your lungs, raising the pressure in your pulmonary arteries. (clevelandclinic.org)
Pulmonary function tests measure the lungs' capacity to hold air, to move air in and out, and to absorb oxygen. (msdmanuals.com)

Possible residual cardiopulmonary and neurological symptoms in a follow-up study after treatment with inhaled nitric oxide.The methods used were dose-response studies with iNO, lung volume recruitment with surfactant, high frequency oscillatory ventilation and partial liquid ventilation, lung volume measurements with respiratory inductive plethysmography and a four-center follow up study after iNO.Results and conclusions:· iNO decreased pulmonary artery pressure after cardiopulmonary bypass. (gu.se)
After induction of acute lung injury by repeated lung lavage with saline, 20 pigs were randomly assigned to partial liquid ventilation with two sequential doses of 15 ml/kg perfluorocarbon (PLV group, n = 10) or to continued gaseous ventilation (GV group, n = 10). (silverchair.com)
During partial liquid ventilation, there were no changes in pulmonary blood flow distribution when compared with values obtained after induction of acute lung injury in the PLV group or to the animals submitted to gaseous ventilation. (silverchair.com)
In the surfactant washout animal model of acute lung injury, redistribution of pulmonary blood flow does not seem to be a major factor for the observed increase of arterial oxygen tension during partial liquid ventilation. (silverchair.com)

Ventilation, cardiac output, and the distribution of ventilation-perfusion (V˙ a /Q˙ ) ratios were measured using the multiple inert gas elimination technique breathing air and then 100% oxygen through a nose mask. (atsjournals.org)
The other 10 patients showed a change in Pa CO 2 of − 1.3 ± 2.2 mm Hg breathing oxygen and were classified as nonretainers (NR). Ventilation fell significantly from 9.0 ± 1.5 to 7.2 ± 1.2 L/min in the R group breathing oxygen (p = 0.007), whereas there was no change in ventilation in the NR group (9.8 ± 1.8 to 9.9 ± 1.8 L/min). (atsjournals.org)
This study suggests that an overall reduction in ventilation characterizes oxygen-induced hypercapnia, as an increased dispersion of blood flow from release of hypoxic vasoconstriction occurred to a significant and similar degree in both groups. (atsjournals.org)
The oxygen sensing and signal transduction machinery is located in the pulmonary arterial smooth muscle cells (PASMCs) of the pre-capillary vessels, albeit the physiological response may be modulated in vivo by the endothelium. (ersjournals.com)
Thirty-five patients (mean ± SD age, 65.4 ± 6.5 years) with a mean bronchodilator forced expiratory volume in the first second of expiration of 39.4 ± 7%, undergoing an 8-week outpatient pulmonary rehabilitation, were randomized to either non-invasive ventilation, supplemental oxygen, and exercise training, supplemental oxygen during exercise training, or exercise training groups. (thoracrespract.org)
The improvements in respiratory muscle strength were higher in non-invasive ventilation, supplemental oxygen, and exercise training patients than the moderate improvements in the exercise training group. (thoracrespract.org)
Both non-invasive ventilation, supplemental oxygen, and exercise training and supplemental oxygen during exercise training groups showed significant increases in the 6-minute walk test and incremental shuttle walk test. (thoracrespract.org)
However, the increase in walking distance was better in non-invasive ventilation, supplemental oxygen, and exercise training group (69.8 ± 53.2 m in 6-minute walk test and 66.6 ± 65.2 m in incremental shuttle walk test, P = .001 and P = .005, respectively) compared to supplemental oxygen during exercise training group (42.5+55.5 m in 6-minute walk test and 53.5+70.2 m in incremental shuttle walk test, P = .01 each, respectively). (thoracrespract.org)
Symptoms of depression significantly improved only in non-invasive ventilation, supplemental oxygen, and exercise training group (−2.8+2.8, P = .006). (thoracrespract.org)
In particular Dr Vedam has recently been involved with updating prescription guidelines for the provision of domiciliary oxygen, CPAP and nocturnal ventilation devices (bi-level and ASV devices) in 2014. (edu.au)

Noninvasive ventilation in acute severe asthma: current evid. (lww.com)
Some patients with idiopathic pulmonary fibrosis (IPF) develop severe acute respiratory failure (ARF) requiring admission to an intensive care unit (ICU) and ventilatory support. (nih.gov)
Respiratory distress syndrome (RDS) is considered one of the major contributors to severe pulmonary dysfunction and consequent death in preterm infants. (cochrane.org)
Hypercapnia is usually caused by severe ventilation/perfusion (V/Q) mismatch or hypoventilation. (medscape.com)
The Centers for Disease Control and Prevention (CDC) is providing: 1) background information on the forms of e-cigarette products, 2) information on the multistate outbreak of severe pulmonary disease associated with using e-cigarette products (devices, liquids, refill pods, and cartridges), and 3) clinical features of patients with severe pulmonary disease. (cdc.gov)
One patient (in Illinois) with a history of recent e-cigarette use was hospitalized with severe pulmonary disease and subsequently died. (cdc.gov)

In women, the values of muscle strength, pulmonary ventilation, and cardiac output (all variables related with muscle mass) are generally 60-75% of the exercise physiology values recorded in men. (medscape.com)

All patients admitted to the pulmonary ward or intensive care unit with a COPD exacerbation were included. (rug.nl)
Pulmonary rehabilitation programs (PRPs) could influence short-term outcomes in patients with COPD undergoing lung resection. (cpxinternational.com)

We conducted a prospective, randomized study comparing noninvasive pressure-support ventilation delivered through a face mask with standard treatment in patients admitted to five intensive care units over a 15-month period. (nih.gov)

Noninvasive ventilation was successful in 8 patients and unsuccessful in 10 who required endotracheal intubation. (nih.gov)

MRI of exogenous imaging agents offers a safely repeatable modality to assess regional pulmonary ventilation. (ncl.ac.uk)
Single-photon emission computed tomography was used to study regional pulmonary blood flow. (silverchair.com)

To our knowledge this is the first case report of heliox and inhaled nitric oxide used simultaneously in localized interstitial pulmonary emphysema. (rcjournal.com)

Non-responders need careful attention in order to improve ventilation and/or hemodynamics. (gu.se)
Gas exchange, hemodynamics, and pulmonary blood flow were determined in both groups before and after the induction of acute lung injury and at corresponding time points 1 and 2 h after each instillation of perfluorocarbon in the PLV group. (silverchair.com)

Blue arrows indicate the constriction of pulmonary arteries, black arrows the direction of blood flow. (ersjournals.com)
High blood pressure in your pulmonary arteries causes these arteries to become narrow. (clevelandclinic.org)
Blood clots in your pulmonary arteries. (clevelandclinic.org)
PAH makes your pulmonary arteries become narrow, thick or stiff. (clevelandclinic.org)
Less blood can flow through, which raises the pressure in your pulmonary arteries. (clevelandclinic.org)
Blood backs up in your heart, raising the pressure in your pulmonary arteries. (clevelandclinic.org)

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)

A person may be required to get a ventilation scan or perfusion scan or may get both scans, which can be done one after the other. (netmeds.com)

Such effects are similar to the interstitial pulmonary fibrosis reported previously by NIOSH researchers using single-walled carbon nanotubes. (cdc.gov)

The most important mechanisms are considered to be a reduction in ventilation associated with removal of a hypoxic stimulus and increasing ventilation-perfusion (V˙ a /Q˙ ) inequality caused by release of hypoxic vasoconstriction ( 1 ). (atsjournals.org)
Hypoxic pulmonary vasoconstriction optimises gas exchange by matching perfusion to ventilation. (ersjournals.com)

Although the article addressed many of the strengths and limitations of CTPA in the evaluation of suspected PE, we do not agree with the suggestion that there is now a role for ventilation/perfusion (V/Q) scanning only in a very limited number of patient groups. (snmjournals.org)

1H MR imaging-derived specific ventilation was significantly greater in the gravitational-dependent versus nondependent lung in healthy subjects (P = .02) but not in patients with asthma (P = .1). (uwo.ca)

It may be caused by: Ventilation perfusion mismatch (V/Q mismatch), which can be either low or high. (wikipedia.org)

The preoperative physiologic assessment of a patient being considered for surgical resection of lung cancer must consider the immediate perioperative risks from comorbid cardiopulmonary disease, the long-term risks of pulmonary disability, and the threat to survival due to inadequately treated lung cancer. (researchgate.net)

The patients who received lung -protective ventilation strategy during anesthesia were divided into a PCV-VG group (n=165) and a VCV group (n=164) according to intraoperative ventilation mode. (bvsalud.org)
Conclusion Among patients undergoing thoracoscopic lung resection, intraoperative ventilation mode (PCV-VG or VCV) is not associated with the risk of PPCs during hospitalization . (bvsalud.org)

Nursing performance facing this unwanted human re- e n t i l a t i o n i sponse is considered essential for the maintenance and control of vital signs, cardiovascular monitoring, gas exchange and respiratory pat- tern, as well as constant surveil ance aimed at signs of hypoventilation p o n t a n e o u s V and inadequate ventilation. (bvsalud.org)

The use of pathophysiology-based ventilatory strategies, strategies to prevent lung injury, and alternative modes of ventilation should yield further improvements in neonatal outcomes. (medscape.com)
Pulmonary levels of biomarkers for inflammation and lung injury in protective versus conventional one-lung ventilation for oesophagectomy: A randomised clinical trial. (ox.ac.uk)

MR imaging volumes were coregistered by using optical flow deformable registration to generate 1H MR imaging-derived specific ventilation maps. (uwo.ca)

A reduced V/Q ratio can be caused by impaired ventilation, which may be a consequence of conditions such as bronchitis, obstructive airway disease, mucus plugs, or pulmonary edema, which limit or obstruct the ventilation. (wikipedia.org)
Pulmonary effects of expiratory-assisted small-lumen ventilation during upper airway obstruction in pigs. (ventinovamedical.com)
Dr Ziebart and colleagues confirmed in a pig model with upper airway obstruction adequate ventilation using Ventrain in combination with a transtracheal catheter. (ventinovamedical.com)

The former is associated with control of ventilation or muscle function, whereas the latter is associated with the intrapulmonary control of ventilation-perfusion matching. (atsjournals.org)

Prisoners were suspected of having TB we proposed to determine the prevalence on the grounds of clinical findings, past of pulmonary TB and the associated risk history of diagnosis of TB infection and factors among juvenile detainees in Karachi family history of the illness. (who.int)
Concept analysis of the nursing diagnosis of impaired spontaneous ventilation in critical patients. (bvsalud.org)
In nursing practice, this concept has been identified in r i t i c a l P n C studies that address the nursing diagnosis of impaired spontaneous ventilation. (bvsalud.org)

Based on this form of conception of book updated, editors and authors consider that this book opens a new and original vision for adequate knowledge and deep updated based on key publications in the period under review, very useful for clinical practice, studies designs and potential new trends in the use of noninvasive ventilation. (downloadmedicalbook.com)
As such, it is a unique update book resource in noninvasive ventilation in pulmonary, critical care and sleep medicine that may influence current clinical practice and future studies. (downloadmedicalbook.com)
Although the etiology of e-cigarette-associated pulmonary disease is undetermined, epidemiologic investigations in affected states are ongoing to better characterize the exposures, demographic, clinical, and laboratory features and behaviors of patients. (cdc.gov)

To compare the benefits and side effects of HFJV versus HFOV for mortality and morbidity in preterm infants born at less than 37 weeks GA with pulmonary dysfunction in both elective and rescue modes. (cochrane.org)

The lung-protective ventilation bundle has been shown to reduce mortality in adult acute respiratory distress syndrome (ARDS). (biomedcentral.com)

Additive treatment and advanced pulmonary monitoring of ventilation in COVID associated ARDS (CARDS). (uk-koeln.de)

As a result, alveoli are less expanded and have higher compliance at the base, resulting in a more substantial increase in volume on inspiration for increased ventilation. (statpearls.com)

Free-breathing Pulmonary MR Imaging to Quantify Regional Ventilation" by Dante P I Capaldi, Rachel L Eddy et al. (uwo.ca)
Purpose: To measure regional specific ventilation with free-breathing hydrogen 1 (1H) magnetic resonance (MR) imaging without exogenous contrast material and to investigate correlations with hyperpolarized helium 3 (3He) MR imaging and pulmonary function test measurements in healthy volunteers and patients with asthma. (uwo.ca)
Hyperpolarized 3He MR imaging- and 1H MR imaging-derived specific ventilation maps were coregistered to quantify regional specific ventilation within hyperpolarized 3He MR imaging ventilation masks. (uwo.ca)
In patients with asthma, coregistered 1H MR imaging specific ventilation and hyperpolarized 3He MR imaging maps showed that specific ventilation was diminished in corresponding 3He MR imaging ventilation defects (0.05 ± 0.04) compared with well-ventilated regions (0.09 ± 0.05) (P (uwo.ca)

The primary objective of assisted ventilation is to support breathing until the patient's respiratory efforts are sufficient. (medscape.com)

This concept has expanded to other areas of acute adult ventilation and is recommended for pediatric ventilation. (biomedcentral.com)
This remains common practice for pediatric ventilation, and for much of adult ventilation. (biomedcentral.com)

Anatomy5

Diseases25

Chemicals and Drugs10

Analytical, Diagnostic and Therapeutic Techniques and Equipment55

Psychiatry and Psychology1

Phenomena and Processes33

Anthropology, Education, Sociology and Social Phenomena1

Technology, Industry, Agriculture3

Information Science1

Named Groups2

Health Care13

Mechanical18

Postoperative pulmonary3

Chronic16

Alveolar17

Embolism10

Oxygenation6

Complications4

Positive pressure ve2

Hypertension25

Minute ventilation2

Lungs11

Partial Liquid Ventilation4

Oxygen10

Severe6

Cardiac1

COPD2

Intensive care units1

Endotracheal intubation1

Regional pulmonary2

Nitric oxide1

Hemodynamics2

Arteries6

Methods2

Perfusion scan1

Interstitial1

Hypoxic2

CTPA1

Significantly1

Mismatch1

Cardiopulmonary1

Intraoperative2

Hypoventilation1

Lung injury2

Volumes1

Airway3

Intrapulmonary1

Diagnosis3

Clinical3

HFOV1

Respiratory Distress1

COVID1

Alveoli1

Imaging4

Objective1

Pediatric2