The client is having electroconvulsive therapy for treatment of severe depression. Which of the following indicates that the client's ECT has been effective?

Appeared in: DHS 2018 shift 1st

Explanation

The primary goal and indicator of a therapeutically effective ECT session is the induction of a generalized, tonic-clonic (grand mal) seizure.
This seizure activity, which should last for at least 25 seconds, is believed to cause significant changes in brain neurochemistry (affecting neurotransmitters like serotonin and norepinephrine) that alleviate the symptoms of severe depression.
The presence and duration of the seizure are the key measures of success, monitored via electroencephalogram (EEG) and observation of motor convulsions.

Why Other Options Were Wrong

Option A: This is an expected effect of the general anesthetic (e.g., thiopental, propofol) given before the procedure to ensure the patient is unaware and comfortable; it is not the therapeutic action of ECT.
Option B: Vomiting is a potential adverse effect of anesthesia or the procedure itself and requires nursing intervention to prevent aspiration. It is not a sign of therapeutic success.
Option C: Tachycardia is a common, transient cardiovascular response to the electrical stimulus and subsequent seizure. While it is monitored for safety, it is a physiological side effect, not the measure of therapeutic effectiveness.

Related Visual

Clinical Relevance

Nursing practice connection: Use the key finding related to Indicator of Therapeutic Effectiveness of Electroconvulsive Therapy (ECT) to guide bedside assessment, documentation, and the next nursing action.
The nurse's primary role is ensuring patient safety and accurately monitoring the treatment's key indicator: the seizure. This includes pre-procedure checks (NPO status, consent), intra-procedure monitoring of vitals and seizure duration, and post-procedure recovery care.
Failure to induce a seizure of adequate duration (at least 25 seconds) means the treatment was not therapeutic, and the psychiatrist may need to adjust the stimulus energy in the next session.
What if? If a patient is taking a benzodiazepine (e.g., lorazepam) for anxiety, the seizure threshold is increased, making it harder to induce a therapeutic seizure. The nurse must ensure the medical team is aware so the medication can be held before ECT.

How to Approach the Question

First, identify the core concept of the question: Electroconvulsive Therapy (ECT) and how its effectiveness is measured.
The question asks for the specific sign that indicates the therapy has been effective. This requires knowing the treatment's fundamental mechanism of action.
Evaluate each option: Is it the therapeutic goal, a side effect, or an effect of an adjunctive medication?
Losing consciousness is due to anesthesia. Vomiting is an adverse effect. Tachycardia is a physiological stress response.
The induced grand mal seizure is the intended therapeutic event that causes the desired neurochemical changes. Therefore, it is the correct indicator of effectiveness.

Concept Tested & Keywords

Concept Tested: Indicator of Therapeutic Effectiveness of Electroconvulsive Therapy (ECT)
Stem keywords: electroconvulsive therapy, ECT, severe depression, effective
Lead-in keywords: indicates
Clinical cues: treatment of severe depression
Negative lead-in flag: false

Question ID

Q_XEn2S1D3Ys8f0Z-4RP6p

Reference Book

E6 Kaplan Sadock's Synopsis of Psychiatry-2022 (pp 1-3768 of 3768) pp. 2308-2310, 2299-2301

E6 Robert Boland, Marcia L. Verduin - Kaplan and Sadock's Comprehensive Text of Psychiatry-Wolters Kluwer Health (2024) (pp 1-16525 of 16525) p. 14100-14102

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