Choice A rationale

Pseudomembranous colitis and crystalluria are not typically associated with gentamicin use.

Choice B rationale

Gentamicin can cause ototoxicity, which can manifest as tinnitus (ringing in the ears), vertigo (a sensation of spinning), and hearing loss. Headaches can also occur as a side effect of gentamicin.

Choice C rationale

While gentamicin can cause nephrotoxicity (kidney damage), which could potentially affect electrolyte levels, a potassium level of 3.5 mg/dL is within the normal range. Therefore, this would not typically be assessed as a toxic effect of gentamicin.

Choice D rationale

Hypoglycemia and cardiac dysrhythmias are not typically associated with gentamicin use.

Choice D rationale

The symptoms described - edema, severe pain, paresthesia, and tightness of the operative limb

- are indicative of Compartment Syndrome. This is a serious condition that can occur after surgery, where increased pressure within one of the body’s compartments results in insufficient blood supply to the area. It requires immediate treatment to prevent permanent damage.

Choice A rationale

While wound infection is a possible post-operative complication, it would typically present with symptoms such as redness, increased pain at the wound site, purulent discharge, and possibly fever. The symptoms described do not specifically indicate a wound infection.

Choice B rationale

Internal bleeding could cause pain and swelling, but it would likely also present with signs of shock, such as low blood pressure, increased heart rate, and altered mental status. The symptoms provided do not clearly indicate internal bleeding.

Choice C rationale

Graft rupture is a serious complication that could potentially cause severe pain and swelling. However, it would also likely cause significant hemodynamic instability, including hypotension and tachycardia. The symptoms described are more indicative of Compartment Syndrome.