A client is admitted to the hospital for an induction of labor owing to a gestation of 42 weeks confirmed by dates and ultrasound. When she is dilated 3 cm, she has a contraction of 70 seconds. She is receiving oxytocin. The nurse's first intervention should be to?

1. A

   Check FHR

2. B

   Notify the attending physician

3. C

   Turn off the IV Oxytocin

4. D

   Prepare for the delivery because the client is probably in transition phase

Appeared in: NORCET -4 , 2023

Explanation

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• A contraction lasting 70 seconds during an oxytocin infusion is a sign of uterine hyperstimulation (tachysystole), which is defined as contractions lasting longer than one minute.
• This condition is dangerous because prolonged contractions can compress placental blood vessels, reducing blood flow and oxygen to the fetus, potentially leading to fetal distress.
• The immediate priority in a situation causing potential harm is to remove the causative agent. Therefore, the nurse's first independent action must be to stop the oxytocin infusion.
• Oxytocin has a short half-life of 3-5 minutes, meaning its effects diminish rapidly once the infusion is stopped, making this the most effective first-line intervention.

Why Other Options Were Wrong

• Option A: While fetal monitoring is crucial, it is an assessment step that does not resolve the underlying problem of hyperstimulation. The cause must be stopped first to prevent further fetal compromise.
• Option B: This is a necessary communication step but not the first action. The nurse can and must act independently to stop the oxytocin infusion to ensure patient safety without delay.
• Option D: The client is only 3 cm dilated, which is the active phase of labor, not the transition phase (8-10 cm). A 70-second contraction is a sign of a complication, not imminent delivery.

Related Visual

• Visual 1: Fetal Heart Rate Tracing - An image showing a cardiotocograph (CTG) trace demonstrating uterine tachysystole (e.g., contractions lasting over 60-90 seconds) and a corresponding late deceleration in the fetal heart rate, illustrating the risk of fetal compromise that necessitates stopping the oxytocin.

Clinical Relevance

• Nursing practice connection: Use the key finding related to Management of oxytocin-induced uterine tachysystole during labor to guide bedside assessment, documentation, and the next nursing action.
• Recognizing and responding to uterine tachysystole is a critical nursing responsibility during oxytocin-augmented labor. The nurse's prompt, independent action to stop the infusion is a key patient safety measure that can prevent fetal injury.
• This scenario highlights the importance of understanding the pharmacokinetics of medications. Because oxytocin has a short half-life, stopping it is a rapid and effective intervention.
• What if? - If the contraction was 55 seconds long with a reassuring FHR, the nurse would continue to monitor closely. However, a 70-second contraction crosses the threshold for hyperstimulation, mandating immediate cessation of the oxytocin as the first action.

How to Approach the Question

• This is a clinical priority question that requires you to identify the most immediate and critical action.
• First, analyze the clinical data provided: a client on oxytocin is having a 70-second contraction.
• Recognize this as a sign of uterine hyperstimulation (tachysystole), a known and dangerous side effect of oxytocin.
• Understand the pathophysiology: hyperstimulation can cause fetal hypoxia. The priority is to correct the cause.
• Evaluate the options based on the 'intervention vs. assessment' principle. Stopping the oxytocin (Option C) is a direct intervention that resolves the problem.
• Options A (Check FHR) and B (Notify physician) are assessment and communication steps, which are secondary to the immediate safety intervention.

Concept Tested & Keywords

• Concept Tested: Management of oxytocin-induced uterine tachysystole during labor.
• Stem keywords: induction of labor, 42 weeks, oxytocin, contraction of 70 seconds, 3 cm dilated
• Lead-in keywords: first intervention
• Clinical cues: Contraction of 70 seconds: This duration is longer than the typical upper limit of 60 seconds, indicating uterine hyperstimulation (tachysystole).
• Clinical cues: Receiving oxytocin: This identifies the likely cause of the hyperstimulation, guiding the intervention.

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