The victim was bound upon this wheel, on his knees, with his hands behind his back.
A continuous positive airway pressure (CPAP) machine was initially used mainly by patients for the treatment of sleep apnea at home, but now is in widespread use across intensive care units as a form of ventilation.
In this article, we examine some of the many indications for CPAP use, including congestive heart failure (CHF), asthma/COPD, drowning, carbon monoxide (CO) poisoning and pulmonary infections, and discuss some of the physiological responses that make CPAP beneficial.