The patient with peripheral vascular disease such as Raynaud's disease should avoid what?
Wearing warm mitten gloves.
Wearing socks.
Exposure to cold temperatures.
Engaging in regular exercise.
The Correct Answer is C
Exposure to cold temperatures should be avoided by the patient with peripheral vascular disease such as Raynaud’s disease.
This is because cold temperatures can trigger vasospasm, which is a sudden narrowing of the small arteries in the fingers or toes, limiting blood flow and causing pain, numbness and color changes.
Choice A is wrong because wearing warm mitten gloves can help prevent or reduce the severity of Raynaud’s attacks by keeping the hands warm.
Choice B is wrong because wearing socks can also help protect the feet from cold exposure and prevent or reduce Raynaud’s attacks.
Choice D is wrong because engaging in regular exercise can improve blood circulation and reduce the frequency and duration of Raynaud’s attacks. However, exercise should be done with caution and proper clothing to avoid injury or frostbite to the affected areas.
Normal ranges for peripheral vascular disease are not applicable, as it is a condition that affects the blood vessels and not a specific blood test or measurement.
However, some tests that can help diagnose peripheral vascular disease or its underlying causes are blood pressure measurement, ankle-brachial index, Doppler ultrasound, angiography, blood tests for cholesterol, glucose, clotting factors and inflammatory markers.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Class IV antidysrhythmics or calcium channel blockers decrease the flow of calcium ions into cardiac and vascular smooth muscle cells, thus decreasing heart rate and contractions.By reducing the calcium influx, they also decrease the slope of phase 0 and 4 and prolong phase 2 of the cardiac action potential.This results in vasodilation, reduced myocardial oxygen demand, and decreased conduction through the AV node.
Choice A is wrong because calcium channel blockers do not increase blood vessel spasm, but rather cause vasodilation.
Choice C is wrong because calcium channel blockers do not decrease refractory period, but rather prolong it by extending phase 2 of the cardiac action potential.
Choice D is wrong because calcium channel blockers do not increase heart rate, but rather decrease it by slowing down the pacemaker activity and AV nodal conduction.
Normal ranges for heart rate are 60 to 100 beats per minute, and for blood pressure are 120/80 mmHg or lower.
Correct Answer is A
Explanation
This is because low potassium levels (hypokalemia) increase the sensitivity of the heart to digoxin and can lead to toxicity even with normal serum digoxin levels. Digoxin inhibits the sodium-potassium pump on the cardiac cells, which causes potassium to accumulate outside the cells.Low potassium levels in the blood create a larger gradient for potassium to move out of the cells, which enhances the effect of digoxin and can cause arrhythmias.
Choice B is wrong because calcium 9.2 mg/dL is within the normal range (8.5 to 10.2 mg/dL) and does not increase the risk of digoxin toxicity.However, high calcium levels (hypercalcemia) can potentiate the effects of digoxin and cause toxicity.
Choice C is wrong because sodium 140 mEq/L is within the normal range (135 to 145 mEq/L) and does not increase the risk of digoxin toxicity.However, high sodium levels (hypernatremia) can reduce the binding of digoxin to the sodium-potassium pump and decrease its efficacy.
Choice D is wrong because magnesium 2.2 mg/dL is within the normal range (1.7 to 2.4 mg/dL) and does not increase the risk of digoxin toxicity.However, low magnesium levels (hypomagnesemia) can increase the sensitivity of the heart to digoxin and cause toxicity.
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