IGNOU PB Bsc Nsg Entrance-2017
Mental Health Nursing
Easy
During ECT, current is passed for?
Appeared in: IGNOU PB Bsc Nsg Entrance-2017
Explanation
- Electroconvulsive Therapy (ECT) utilizes a very brief electrical pulse to induce a therapeutic seizure.
- The duration of the current is intentionally kept short, typically between 0.3 and 0.7 seconds, to minimize cognitive side effects while ensuring the stimulus is sufficient to trigger a seizure.
- This brief stimulus duration is distinct from the resulting seizure, which is much longer (usually 25-60 seconds) and is the primary therapeutic component of the treatment.
Why Other Options Were Wrong
- Option A: A duration of 5 to 10 seconds is too long for the electrical stimulus. This timeframe is more aligned with the duration of the tonic phase of the induced seizure.
- Option B: A duration of 10 to 30 seconds represents the length of the therapeutic seizure itself (specifically the tonic and early clonic phases), not the electrical current that initiates it.
- Option D: While much closer to the correct answer than longer durations, modern ECT protocols emphasize ultra-brief pulses. The total stimulus train is typically kept under one second to enhance safety and reduce side effects. Therefore, 0.3 to 0.7 seconds is a more precise and common range.
Related Visual
Clinical Relevance
- Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Electroconvulsive Therapy (ECT) stimulus duration as background academic context rather than a clinical decision trigger.
- A nurse's role in ECT includes monitoring and accurately documenting the seizure duration, not just the stimulus. This data is vital for the psychiatrist to assess if a therapeutic seizure was achieved.
- Understanding the difference between stimulus time and seizure time is crucial for patient safety. If a seizure is prolonged (e.g., >180 seconds), the nurse must be prepared to assist in administering medications to terminate it.
- What if? If a patient fails to have a seizure after the initial stimulus, the protocol allows for re-stimulation, often at a slightly higher intensity or duration. The nurse must be aware of this possibility and continue close monitoring.
How to Approach the Question
- First, identify the key terms in the question: 'ECT' and 'current is passed for'. This specifies the question is about the electrical stimulus duration, not the resulting seizure.
- Recall the principle of ECT: to induce a therapeutic seizure with the minimum amount of electrical energy to reduce side effects.
- Based on this principle, eliminate the longer timeframes (5-10 seconds and 10-30 seconds) as they are more characteristic of the seizure itself.
- Between the remaining short options (0.3-0.7 seconds and 1-3 seconds), choose the one that represents the most brief and efficient stimulus, which aligns with modern ECT practice.
- Select the sub-second option as the most accurate duration for the electrical stimulus.
Concept Tested & Keywords
- Concept Tested: Electroconvulsive Therapy (ECT) stimulus duration
- Stem keywords: ECT, current, passed for, duration
- Lead-in keywords: BEST, MOST RELEVANT CLUE
- Negative lead-in flag: false
Question ID
QdeCpKdKPEro5157IuF4-V
Reference Book
E6 Robert Boland, Marcia L. Verduin - Kaplan and Sadock's Comprehensive Text of Psychiatry-Wolters Kluwer Health (2024) (pp 1-16525 of 16525) pp. 11156-11158, 11188-11190
E6 Kaplan Sadock's Synopsis of Psychiatry-2022 (pp 1-3768 of 3768) p. 2307-2309
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