Effect of Atropine Premedication on Cardiac Autonomic Function During Electroconvulsive Therapy: A Randomized...

Area of Science:

• Cardiology
• Psychiatry
• Autonomic Nervous System Research

Background:

• Electroconvulsive therapy (ECT) is known to cause significant cardiovascular changes.
• The acute effects of ECT on cardiac autonomic function remain largely unexplored.
• Understanding these changes is crucial for patient safety during ECT.

Purpose of the Study:

• To compare autonomic dysfunction with and without atropine premedication during ECT.
• To evaluate dysautonomia across different psychiatric diagnoses before and after ECT.

Main Methods:

• A crossover study involving 41 psychiatric patients undergoing 82 ECT sessions.
• Patients received either atropine or no atropine during randomized ECT sessions.
• Continuous monitoring of heart rate, blood pressure, and oxygen saturation, along with ANSiscope indices.

Main Results:

• Autonomic dysfunction significantly increased after ECT in both atropine and no-atropine groups.
• The increase in autonomic dysfunction was significantly greater in the atropine group compared to the no-atropine group.
• No significant differences in autonomic function were observed across various psychiatric diagnoses before or after ECT.

Conclusions:

• Cardiac autonomic dysfunction is exacerbated by ECT, particularly when atropine is used.
• Atropine premedication during ECT should be reserved for patients at risk of bradyarrhythmia.
• The study suggests avoiding routine atropine use in ECT to mitigate excessive autonomic dysfunction.