What changes in veins occur to create varicose veins
An increase in osmotic pressure
Damage to the valves within the veins
Damage to the venous endothelium
An increase in hydrostatic pressure
The Correct Answer is B
Varicose veins occur when the valves within the veins, which normally prevent the backflow of blood, become damaged or weakened, allowing blood to pool and the veins to become enlarged and twisted. This can occur due to a variety of factors, including age, pregnancy, obesity, genetics, and prolonged periods of standing or sitting. An increase in hydrostatic pressure can contribute to the development of varicose veins, but it is not the primary cause.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Mitral stenosis refers to a narrowing of the mitral valve, which is located between the left atrium and the left ventricle. This narrowing can cause incomplete emptying of blood from the left atrium into the left ventricle during diastole (relaxation phase) of the cardiac cycle. This can lead to increased pressure in the left atrium and pulmonary circulation, causing symptoms such as shortness of breath, fatigue, and pulmonary con
Correct Answer is C
Explanation
Orthostatic hypotension is a drop in blood pressure that occurs when a person stands up from a sitting or lying down position. To check for orthostatic hypotension, the nurse typically takes the patient's blood pressure and heart rate while the patient is lying down, then has the patient stand up for a few minutes and takes the blood pressure and heart rate again. If the blood pressure drops significantly (usually a drop of 20 mm Hg or more) and the heart rate increases, it may indicate orthostatic hypotension.
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