What are possible complications of positive pressure ventilation?

Barotrauma — Pulmonary barotrauma is a well-known complication of positive pressure ventilation. Consequences include pneumothorax, subcutaneous emphysema, pneumomediastinum, and pneumoperitoneum.

What is the most common complication of ventilation?

The complications most commonly encountered in the ED include hypoxia, hypotension, high-pressure alarms, and low exhaled–volume alarms. Intubated patients who develop hemodynamic instability with respiratory compromise should immediately be disconnected from the ventilator and manually ventilated with 100% FiO2.

What is one of the complications that can occur with positive pressure ventilation The EMT is unable to?

Positive pressure in the thorax during ventilation impedes venous blood return to the right side of the heart, decreasing cardiac output. Excessive ventilation rates during positive pressure ventilation result in a decrease in cardiac output and perfusion.

What happens during positive pressure ventilation?

Positive-pressure ventilation means that airway pressure is applied at the patient’s airway through an endotracheal or tracheostomy tube. The positive nature of the pressure causes the gas to flow into the lungs until the ventilator breath is terminated.

What does positive pressure ventilation do to a fire?

This pressurization or positive pressure ventilation (PPV) tactic can assist in the venting of smoke and high temperature combustion products and make attacking the fire easier than without PPV. However, this tactic also provides additional oxygen to the fire and can increase the rate of heat and energy being released.

How big is a positive pressure ventilation fan?

Fan size varied from 0.4 m (16 in) to 1.2 m (46 in). Fan angle ranged from 90 degrees to 80 degrees. The setback distance went from 0.6 m (2 ft) to 3.6 m (12 ft). Between one and nine fans were used and fans were located at three different exterior locations and three different interior locations. Fans were oriented in both series and in parallel.

How does positive pressure ventilation affect cardiac output?

Positive pressure ventilation affects preload, afterload and ventricular compliance. The net effect in most situations is a decrease in cardiac output. However, the effect may be beneficial in the context of decompensated heart failure, where the decreased preload and afterload result in a return to a more productive part of the Starling curve.

Why is ventilator a perverse thing to do?

The act of ventilating somebody is a perverse thing to do, as it is a positive pressure process (in contrast to the normally negative pressure process of breathing). The process of distending somebody’s lungs with positive pressure may also give rise to ventilator-associated lung injury .