A patient arrives in the emergency department at 0200 exhibiting signs and symptoms of a stroke. The patient went to bed at 2300 and was "feeling fine" but woke up at 0100 to go to the restroom and fell on the way there. The CT scan shows a hemorrhagic stroke. For what reason would tPA therapy be withheld?

Correct answer: A
A. Monitoring for infection: Infection is a significant risk with external fixation devices due to the presence of pins that penetrate the skin and soft tissues. Monitoring for signs of infection, such as redness, swelling, discharge, or increased pain, is crucial.
B. Monitoring circulatory status: While circulatory status is important, especially in cases of limb injury or immobilization, it is not the most immediate concern compared to the risk of infection from the external fixation device.
C. Validating proper mobility: Ensuring proper mobility is important, but it is secondary to the prevention and detection of infection. Mobility assessments can be done after confirming that there are no infections or complications.
D. Checking discomfort level: While assessing discomfort is important for pain management and comfort, it is not as critical as monitoring for infection, which can lead to severe complications if not addressed promptly.

A. "Arteriolar vasoconstriction occurs, most often in the fingertips with symptoms of coldness, pain, and pale skin.": Raynaud disease involves episodes of vasospasm in the small arteries and arterioles, primarily in the fingers and toes, leading to symptoms like coldness, pain, pallor, and sometimes color changes in the skin.
B. "Peripheral vasospasm occurs in the lower limbs as a result of valve damage from long-standing venous stasis.": This description is more characteristic of venous insufficiency or chronic venous stasis rather than Raynaud disease, which affects the small arteries in the extremities.
C. "Arterial vessel occlusion is caused by many clots that develop in the heart and are carried to the bloodstream.": This describes an embolic event rather than the vasospasm typical of Raynaud disease.
D. "Thrombosis related to prolonged vasoconstriction caused by overexposure to the cold occurs.": While exposure to cold can trigger Raynaud's symptoms, the primary issue is episodic vasospasm, not thrombosis. Raynaud’s is not characterized by blood clot formation.