A nurse assesses a diabetic client who is admitted with an acid-base imbalance. The client's arterial blood gas values are pH 7.39, PaCO2 27 mm Hg, and HCO3 19 mEq/L. Which sign or symptom does the nurse identify as an example of the client's compensatory mechanisms?
Increased release of acids from the kidneys.
Increased urinary output.
Increased thirst and hunger.
Increased rate and depth of respirations.
The Correct Answer is D
A. This is not a compensatory mechanism for metabolic acidosis. In fact, during metabolic acidosis, the kidneys excrete hydrogen ions (acid) and reabsorb bicarbonate (base) to help normalize the pH of the blood.
B. Increased urinary output (polyuria) is not typically a direct compensatory response to metabolic acidosis. However, metabolic acidosis can lead to osmotic diuresis in certain conditions, which may increase urinary output as the body tries to excrete excess acids and maintain electrolyte balance.
C. Increased thirst (polydipsia) and hunger (polyphagia) are not typical compensatory responses to metabolic acidosis. These symptoms are more associated with hyperglycemia in diabetes rather than acid-base disturbances.
D. During metabolic acidosis, the respiratory system compensates by increasing the rate and depth of respirations (hyperventilation). By blowing off more CO2 (carbon dioxide), the body tries to decrease the
amount of carbonic acid in the blood, thereby increasing the pH towards normal. This compensatory mechanism helps to raise the pH back towards the normal range (7.35-7.45).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","E"]
Explanation
A. A urine output of 20 ml/hr is considered inadequate and may indicate decreased kidney perfusion or function. This client likely needs immediate assessment and intervention to address potential renal complications.
B. A patient with appendix surgery exhibiting a thready pulse and a blood pressure of 90/60 should be followed up immediately, as these signs can indicate shock, which is a medical emergency.
C. An approximated incision indicates that the wound edges are well-aligned and healing is progressing as expected. This does not typically warrant immediate follow-up unless there are signs of infection or other complications.
D. A strong pedal pulse suggests adequate blood flow distal to the surgical site. This is a positive finding and does not typically require immediate follow-up unless there are signs of vascular compromise or other complications.
E. A patient with bladder surgery having bloody urine within the first 12 hours can be expected, but if the bleeding is heavy or increases, it would warrant immediate follow-up.
Correct Answer is B
Explanation
A. Deferasirox is a medication used to treat chronic iron overload due to blood transfusions. It is not used as an antidote for heparin.
B. Protamine sulfate is the antidote for heparin. It works by binding to heparin, neutralizing its anticoagulant effects. Protamine sulfate is typically used in cases of heparin overdose or when rapid reversal of heparin's effects is necessary, such as during surgery or if there is active bleeding.
C. Acetylcysteine is used as an antidote for acetaminophen (paracetamol) overdose due to its ability to replenish glutathione stores in the liver and protect against liver damage. It has no role in reversing heparin's effects.
D. Vitamin K is the antidote for warfarin, not heparin. It promotes the synthesis of clotting factors in the liver that are inhibited by warfarin, thus reversing its anticoagulant effects.
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