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 A
Explanation
Dyspnea is a term used to describe difficulty breathing or shortness of breath. It is a subjective symptom and can be experienced differently by different people. Common signs and symptoms of dyspnea include feeling short of breath, chest tightness, rapid breathing, wheezing, coughing, and a feeling of suffocation. The work of breathing may be increased, and accessory muscles may be used to help with breathing. Exercise may worsen symptoms of dyspnea in some individuals, while in others, it may improve symptoms.
Correct Answer is A
Explanation
Coronary artery disease (CAD) is a condition where the arteries that supply blood to the heart become narrowed or blocked due to a buildup of plaque. Several risk factors contribute to the development of CAD, including diabetes mellitus, hypertension, obesity, high alcohol consumption, smoking, and a family history of CAD.
Research suggests that individuals with diabetes mellitus are two to four times more likely to develop CAD than those without diabetes. This is because diabetes can lead to damage to the blood vessels and nerves that control the heart, as well as increased inflammation and high levels of blood glucose that can contribute to the buildup of plaque in the arteries.
While hypertension, obesity, and high alcohol consumption are also known risk factors for CAD, they generally do not increase the risk to the same degree as diabetes. Nonetheless, these factors can contribute to the development and progression of CAD and should be addressed through lifestyle modifications and medical interventions.
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