Category: A

Vertigo associated with a sudden decrease in the pressure to which the inner ear is exposed. This could occur when a scuba diver ascends quickly or when an aircraft ascends quickly.  

The transitional area between the smooth perianal area and the hairy skin.  

A portable battery-or gas-powered ventilator that can be used while transporting patients between locations. The ATV is designed for short-term use and often has separate volume and rate controls.  

In emergency cardiac or critical care, the administration of artificial breaths to a patient that are timed independently of chest compressions.  

A type of mechanical ventilation in which patients breathe spontaneously at any phase of the ventilator’s duty cycle at high continuous positive airway pressures (CPAP). Periodically, the level of CPAP is lowered to eliminate waste gases from the circuit. This technique of ventilation generally requires the patient’s sedation.  

A noninvasive type of artificial ventilation that relies on displacement of the abdominal contents to move the patient’s diaphragm.  

A mode of mechanical ventilation in which the minute ventilation is not allowed to fall below a set threshold (e.g., in adults, below 100 ml/kg/min), but the inspiratory pressure, inspiratory rate, and tidal volume are all adjusted by the ventilator to the patient’s needs.  

In the U.S., any of the pit vipers such as the copperhead, water moccasin, and rattlesnake of the family Crotalidae, and, in the southern U.S, the coral snakes (genus Micrurus) , especially M. fulvius and M. euryxanthus. Venomous snakes have a worldwide distribution. Specific names of snakes in the general vocabulary are listed under the…

A vein that is formed by the merger of the basilic and brachial veins, drains blood from the upper extremity, and becomes the subclavian vein at the lateral border of the first rib.  

Vasodilatation resulting from stimulation of the dorsal root of a spinal nerve.