In the following is not a complication of potassium chloride Intravenous therapy?

Appeared in: AIIMS Rishikesh & Jodhpur NO - 2017

Explanation

Constipation is not a recognized complication of intravenous potassium chloride (KCl) therapy.
The primary complications of IV KCl are related to its effects on veins (phlebitis) and its systemic impact on cardiac and neuromuscular function when levels become too high (hyperkalemia).
Gastrointestinal side effects from potassium supplements are typically nausea, vomiting, or diarrhea, not constipation.

Option A: Phlebitis (inflammation of the vein) is a very common local complication because potassium chloride is a known irritant to the vascular endothelium.
Option B: Hyperkalemia (high serum potassium) is the most serious systemic risk of IV potassium therapy. Administering potassium intravenously can easily lead to toxic levels if not done slowly and carefully.
Option C: Numbness and tingling (paresthesia) are classic signs of hyperkalemia. This sensory disturbance is a direct result of elevated potassium levels interfering with nerve function.

Clinical Relevance

Nursing practice connection: Knowing Complications of Intravenous Potassium Chloride Therapy helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Safe administration of IV potassium is a critical nursing skill. The rule 'Never IV push potassium' is a fundamental patient safety principle to prevent fatal cardiac events.
Nurses must always use an infusion pump for IV potassium, adhere to prescribed rates (usually not exceeding 10 mEq/hr), and ensure proper dilution to minimize risks.
What if the patient has poor renal function? The risk of hyperkalemia is significantly higher because the kidneys are the primary route for potassium excretion. The dose and infusion rate would need to be reduced, and serum potassium levels monitored even more closely.

How to Approach the Question

First, identify the keywords in the question: 'NOT a complication' and 'potassium chloride Intravenous therapy'. The negative framing is key.
Second, review each option and recall the known effects and risks of IV potassium.
A. Phlebitis: Is potassium irritating to veins? Yes. This is a known complication.
B. Hyperkalemia: Can giving IV potassium cause high blood levels? Yes, this is the main systemic risk.
C. Numbness: Is this a symptom of a potassium-related issue? Yes, it's a sign of hyperkalemia.
D. Constipation: Is this related to high potassium? No, GI effects are usually nausea or diarrhea. Low potassium can cause constipation, but giving it would not.

Concept Tested & Keywords

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E6 Pharmacology Nursing Lilley 11e Part 2 p. 165-167

E6 Nursing Brunner Adult Health 3SA Vol 1 Part 3 p. 48-50

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Attempt every question from this paper in a timed mock, then review the full solution for each one.