When intermittent mandatory ventilation (IMV) and/or high frequency oscillatory ventilation (HFOV) fails to improve respiratory failure, the imposition of HFOV during IMV has been shown to facilitate alveolar recruitment and improve oxygenation. This mode of ventilation has been referred to as combined oscillatory and mandatory ventilation (COMV) or high frequency oscillation-intermittent venti...

To analyze the effect of summer ventilation on the thermal performance and energy efficiency of buildings utilizing phase change materials (PCMs), this paper simulated the indoor temperature variation and energy saving performance of buildings constructed with PCM under different ventilation conditions from June to September. With EnergyPlus and degree-day method, 48 ventilation schemes, includ...

Background: Nasal intermittent positive pressure ventilation (NIPPV) is a non-invasive ventilatory mode, which delivers mechanical ventilation via nasal tubes or prongs. The present study was conducted to compare the efficacy of NIPPV and nasal continuous positive airway pressure ventilation (NCPAP) in reducing the need for intubation in preterm infants with respiratory distress syndrome (RDS)....

Obesity impairs peri-operative lung function. To evaluate the impact of pressure support ventilation vs pressure controlled ventilation in moderately obese adults upon early postoperative lung function, we randomly assigned 68 moderately obese patients (body mass index 25-35 kg x m(-2)) undergoing minor surgery to receive intra-operative ventilation either with pressure support or pressure cont...

a 21-year old man with cervical spinal cord damage due to diving was admitted in the icu. tracheostomy was performed due to prolonged mechanical ventilation. left lung atelectasis happened frequently. because of the difficulty of bronchoscopy and failing of recruitment, using a double lumen, two tracheal tubes were guided into the left and right lungs through the tracheostomy stoma site. after ...

a bstract background: mechanical ventilation is one of the supporting treatments that are used for different reasons. to reduce patients’ inconvenience caused due to using tracheal tube and ventilator, sedation is routinely used. using scales for the sedation, for example, richmond agitation sedation scale (rass), may reduce dose of sedation and length of mechanical ventilation.   materials and...

lung contusion is an entity involving injury to the alveolar capillaries, without any tear or cut in the lung tissue. this results in accumulation of blood and other fluids within the lung tissue. the excess fluid interferes with gas exchange leading to hypoxia. the pathophysiology of lung contusion includes ventilation/perfusion mismatching, increased intrapulmonary shunting, increased lung wa...

background: nosocomial pneumonia is a prevalent complication in patients admitted to intensive care units (icu). endotracheal suction is used in cleaning the airways of secretions in patients under mechanical ventilation. performing suction accurately is of great importance to prevent ventilation associated pneumonia. the purpose of this study was to compare the effect of open versus closed tra...