When a patient receiving Metoclopramide, the nurse should assess for?

NORCET 5 Prelims - Sept 2023 (Shift-2)

Pharmacology

Medium

Appeared in: NORCET 5 Prelims - Sept 2023 (Shift-2)

Explanation

Metoclopramide is a dopamine D₂-receptor antagonist that crosses the blood-brain barrier.
This action can lead to significant Central Nervous System (CNS) side effects, making mental status assessment a priority.
Disorientation, confusion, drowsiness, and agitation are key CNS effects the nurse must monitor for to ensure patient safety.
The drug also carries a risk of extrapyramidal symptoms (EPS), such as dystonia and parkinsonian features, due to its effect on dopamine in the brain.

Option A: Increasing peristalsis is the intended therapeutic (prokinetic) effect of Metoclopramide, not an adverse reaction to assess for.
Option B: This is the opposite of the drug's effect. By increasing gastrointestinal motility, Metoclopramide is known to cause diarrhea or loose stools, not constipation.
Option C: This is not part of Metoclopramide's mechanism of action. Its effects are on motility, not acid production.

Visual 1: Diagram: Mechanism of Metoclopramide. A visual showing how the drug blocks D2 receptors in the GI tract to increase motility and in the brain's chemoreceptor trigger zone (CTZ) to prevent nausea, while also affecting the basal ganglia, leading to potential side effects.

Clinical Relevance

Nursing practice connection: Use the key finding related to Nursing assessment for adverse effects of Metoclopramide to guide bedside assessment, documentation, and the next nursing action.
Nurses must prioritize monitoring for CNS changes (drowsiness, confusion, restlessness) and extrapyramidal symptoms (tremors, muscle spasms) when administering Metoclopramide, especially in elderly patients who are more susceptible.
Long-term use of Metoclopramide is associated with a risk of tardive dyskinesia, a serious and often irreversible movement disorder. This makes it crucial for nurses to question prolonged prescriptions and educate patients on the risks.
What if? If a patient on Metoclopramide develops involuntary facial tics or tongue protrusion, the nurse should suspect tardive dyskinesia. The immediate action is to hold the dose, document the findings thoroughly, and notify the prescribing provider immediately.

How to Approach the Question

First, identify the drug in the question: Metoclopramide.
Recall its primary action (prokinetic, antiemetic) and its key characteristic (a dopamine antagonist that crosses the blood-brain barrier).
Recognize that nursing questions asking what to 'assess for' often test knowledge of common or serious adverse effects, which are a priority for patient safety.
Systematically evaluate each option: Is it a therapeutic effect, a side effect, the opposite of an effect, or an unrelated mechanism?
Option A is the therapeutic effect. Option B is the opposite of a known side effect. Option C is an incorrect mechanism. Option D is a known, serious CNS side effect.
Conclude that monitoring for CNS changes like disorientation is the most critical nursing assessment among the choices.

Concept Tested & Keywords

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