General anesthesia can lead to pulmonary compromise during surgery. Nurse anesthetists in the operating room are responsible for minimizing pulmonary complications while managing ventilation through mechanical ventilation. Positive end-expiratory pressure (PEEP) can be used to improve oxygenation, prevent airway collapse and facilitate expansion of alveoli during each breath. Yet the use of PEE...

BACKGROUND Positive end-expiratory pressure (PEEP) is commonly used in clinical settings. It is expected to affect the input from slowly adapting pulmonary stretch receptors (SARs), leading to altered cardiopulmonary functions. However, we know little about how SARs behave during PEEP application. OBJECTIVES Our study aimed to characterize the behavior of SARs during PEEP application. METHO...

In mature lungs, elevated positive end-expiratory pressure (PEEP) reduces pulmonary blood flow (PBF) and increases pulmonary vascular resistance (PVR). However, the effect of PEEP on PBF in preterm infants with immature lungs and a patent ductus arteriosus is unknown. Fetal sheep were catheterized at 124 days of gestation (term approximately 147 days), and a flow probe was placed around the lef...

The success of defibrillation is determined by trans-myocardial current. This current is inversely proportional to transthoracic impedance (TTI). We proposed that increasing lung volume using positive end-expiratory pressure (PEEP) would increase TTI. 12 healthy subjects aged 21-37 years (6 male) were recruited. TTI between self-adhesive defibrillation pads placed in the standard antero-apical ...

Background: Positive end-expiratory pressure (PEEP) is widely used to reduce the risk of hypoxemia and atelectasis during one-lung ventilation (OLV); however, optimal strategy for PEEP titrating remains unclear. The purpose study was investigate effects different strategies on oxygenation respiratory mechanics OLV.

BACKGROUND The aim of this investigation was to compare ventilation at different levels of positive end-expiratory pressure (PEEP) with regard to clinical important outcomes of intensive care unit (ICU) patients without acute respiratory distress syndrome (ARDS) at onset of ventilation. METHODS Meta-analysis of randomized controlled trials (RCTs) comparing a lower level of PEEP with a higher ...

1 Poe RH, Israel RH, Martin MG, et al. Utility of fiberoptic bronchoscopy in patients with hemoptysis and nonlocalizing chest roentgenogram. Chest 1988; 92:70-75 2 Vidal R, Ruiz J. Aumenta Ia tuberculosis en Espa#{241}a?.Med Clin (Barc) 1986; 86:845-47 3 World Health Organization. Magnitude of tuberculosis problem in the world. WHO Wkly Epidem Rec 1981; 50:17-20,33-36,4951,68-76 and 391-96 4 Gr...

OBJECTIVE Positive end-expiratory pressure (PEEP) has been viewed as an essential component of mechanical ventilation in acute respiratory distress syndrome (ARDS) and acute lung injury (ALI). However, clinical trials have not yet convincingly demonstrated that high PEEP levels improve survival. The object of this study was to test a priori hypotheses that a small but clinically important morta...

INTRODUCTION The objectives were to characterize alveolar fluid clearance (AFC) in pigs with normal lungs and to analyze the effect of immediate application of positive end-expiratory pressure (PEEP). METHODS Animals (n = 25) were mechanically ventilated and divided into four groups: small edema (SE) group, producing pulmonary edema (PE) by intratracheal instillation of 4 ml/kg of saline solu...

BACKGROUND Multiple interventions have been tested in models of cardiopulmonary resuscitation (CPR) to optimize drug use, chest compressions, and ventilation. None has studied the effects of positive end-expiratory pressure (PEEP) on outcome. We hypothesized that because PEEP can reverse pulmonary atelectasis, lower pulmonary vascular resistance, and potentially improve cardiac output, its use ...