A charge nurse is reinforcing teaching to a group of nurses about hydrostatic pressure. Which of the following should the nurse include as a contributor to hydrostatic pressure?
Excretion of calcium by the kidneys
Osmotic pressure
Pressure exerted by contraction of the heart
Pressure applied by plasma proteins
The Correct Answer is C
A. The excretion of calcium by the kidneys is related to electrolyte balance and bone health but does not directly contribute to hydrostatic pressure in the vasculature.
B. Osmotic pressure is the force exerted by solutes (such as plasma proteins) drawing water into the bloodstream, which opposes hydrostatic pressure. It does not directly contribute to hydrostatic pressure but rather counterbalances it.
C. Hydrostatic pressure is primarily generated by the force of the heart's contraction, which pushes blood through the arteries and capillaries. This pressure drives fluid out of the blood vessels into the surrounding tissues, a crucial process in nutrient and waste exchange.
D. Pressure applied by plasma proteins contributes to oncotic (colloid osmotic) pressure, not hydrostatic pressure. Oncotic pressure pulls fluid into the capillaries, opposing the outward force of hydrostatic pressure.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Fever: Although fever can occur with various respiratory conditions, it is not the most specific early sign of an exacerbation in pulmonary sarcoidosis.
B. Weight loss: Weight loss is a more general symptom and not specifically indicative of an exacerbation of sarcoidosis.
C. Fatigue: Fatigue is a common symptom of sarcoidosis but is not necessarily an early sign of an exacerbation.
D. Shortness of breath: Shortness of breath is a significant early indicator of exacerbation in pulmonary sarcoidosis. It reflects worsening inflammation and granuloma formation affecting lung function.
Correct Answer is B
Explanation
A. Respiratory acidosis is caused by hypoventilation, leading to an increase in carbon dioxide levels in the blood. This condition is characterized by confusion, drowsiness, and headache, but it does not typically present with vomiting, tingling, or slow respirations as described in this scenario.
B. Metabolic alkalosis occurs due to a loss of hydrogen ions or an excess of bicarbonate, commonly caused by prolonged vomiting. The symptoms described, including persistent vomiting, tingling, and slow, shallow respirations, are consistent with metabolic alkalosis.
C. Metabolic acidosis results from the accumulation of acid or loss of bicarbonate, often presenting with rapid, deep breathing (Kussmaul respirations). The client’s slow respirations and other symptoms do not align with metabolic acidosis, making this option less likely.
D. Respiratory alkalosis is caused by hyperventilation, which leads to a decrease in carbon dioxide levels. It is usually associated with rapid breathing and does not match the slow respirations and other symptoms seen in this client.
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