An obese post-surgical patient reports sudden discomfort in her leg.

Upon assessment, the nurse finds the leg to be cold and pale, with no pedal or popliteal pulse. What should the nurse suspect?

Choice A rationale
Venous thrombosis is a condition in which a blood clot forms in a vein, typically in the leg. While this condition can cause discomfort and changes in the appearance of the leg, it would not typically cause the leg to become cold and pale or result in the loss of a pulse.
Choice B rationale
Paresthesia refers to abnormal sensations in the body, such as tingling, numbness, or burning. While this condition could potentially cause discomfort, it would not typically cause the leg to become cold and pale or result in the loss of a pulse.
Choice C rationale
Vascular spasm is a sudden, brief tightening of the muscles inside the walls of a blood vessel. While this could potentially cause discomfort and changes in the appearance of the leg, it would not typically cause the leg to become cold and pale or result in the loss of a pulse.
Choice D rationale
Arterial occlusion is the correct answer. This condition involves a blockage in an artery, which can significantly reduce blood flow to the affected area. This could cause the leg to become cold and pale and result in the loss of a pulse.

Choice A rationale
A 39-year-old patient experiencing tenderness and swelling in the right calf following a flight may be experiencing deep vein thrombosis (DVT), a condition that can lead to serious complications such as pulmonary embolism if not treated. However, DVT is not immediately life-threatening in most cases.
Choice B rationale
A 58-year-old patient on anticoagulants for atrial fibrillation presenting with black stools is likely experiencing gastrointestinal bleeding, a common side effect of anticoagulant therapy. This can lead to severe blood loss, anemia, and hypovolemic shock, which can be life-threatening if not promptly addressed. Therefore, this patient should be prioritized for assessment.
Choice C rationale
A 67-year-old patient with a gangrenous foot ulcer and a weak pedal pulse likely has peripheral artery disease and an infection that could lead to sepsis if not treated. However, while this condition needs medical attention, it is not as immediately life-threatening as gastrointestinal bleeding.
Choice D rationale
A 50-year-old patient reporting sudden, severe upper back pain could be experiencing a number of conditions, ranging from musculoskeletal strain to aortic dissection. While an aortic dissection is a medical emergency, without additional symptoms such as chest pain, shortness of breath, or loss of consciousness, this patient is not the highest priority.