During a difficult gynecological procedure in the lithotomy position, the patient’s thighs are maintained in a state of extreme, unphysiological flexion against the abdomen. Postoperatively, the patient demonstrates an inability to adduct the affected leg. Which nerve has been injured, and what is the exact anatomical mechanism?

During a suboccipital craniotomy in the sitting position, the nurse anesthetist notes a sudden appearance of end-tidal nitrogen (EtN2) on the gas analyzer monitor. What is the definitive pathophysiological interpretation of this specific monitor finding?

A review of the Postoperative Visual Loss (POVL) Registry highlights specific distinct etiologies behind permanent perioperative blindness. Which of the following conditions is statistically identified as the most common cause of POVL following major spinal surgery in the prone position?

Which of the following best describes the exact pathophysiological mechanism of peripheral nerve injury caused by mechanical malpositioning during anesthesia?

If a patient suffers a severe intraoperative injury to the ulnar nerve, which precise localized motor deficit will be readily apparent during a focused postoperative physical examination of the hand?

Calculate the maximum acceleration of a car that is heading up a 4º slope (one that makes an angle of 4º with the horizontal) under the following road conditions. Assume that only half the weight of the car is supported by the two drive wheels and that the coefficient of static friction is involved—that is, the tires are not allowed to slip during the acceleration. (Ignore rolling.) (a) On dry concrete. (b) On wet concrete. (c) On ice, assuming that μs = 0.100, the same as for shoes on ice.

A rock with a mass of 540 g in air is found to have an apparent mass of 342 g when submerged in water. (a) What mass of water is displaced? (b) What is the volume of the rock? (c) What is its average density? Is this consistent with the value for granite, 2.7 x 103 kg/m3?

What is sin([x] radians)?

Using a (first) piece of your blank scratch paper, determine the area of the triangle below.  

(a) How much heat transfer is necessary to raise the temperature of a 0.200-kg piece of ice from −20.0ºC to 130ºC, including the energy needed for phase changes? (b) How much time is required for each stage, assuming a constant 20.0 kJ/s rate of heat transfer? (c) Make a graph of temperature versus time for this process. Note: Ice’s specific heat is 2090 J/(kg⋅ºC) and latent heat for water at 0ºC is 334kJ/kg.