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  • Title: [A case of sudden death during postoperative Holter ECG examination in a patient who experienced intraoperative cardiac arrest].
    Author: Kono M, Sugisawa N, Katagiri J, Yamada M, Sha M, Ohmura A.
    Journal: Masui; 1995 Oct; 44(10):1391-5. PubMed ID: 8538011.
    Abstract:
    We report a case of postoperative sudden death during Holter-ECG examination in a 62-yr-old male, who experienced intraoperative cardiac arrest possibly due to myocardial ischemia. Although the patient recovered from intraoperative event without any neurological sequelae, he suffered from spontaneous ventricular tachycardia following mild ST segment depression that led to cardiac arrest on the 58th postoperative day. Precise mechanism of sudden death was not clear because coronary angiography or autopsy was not performed. However, the postoperative Holter-ECG revealed frequent episodes of silent 0.5-1.0 mm ST segment depression during tachycardia which had not been observed in the preoperative 12-lead ECG. Thus a likely explanation would be that the patient had the undetected coronary artery disease with frequent episodes of silent ischemia and finally was led to the fatal arrhythmia. In this case, so called "stunned myocardium" following repeated silent ischemia may have also contributed to the life-threatening arrhythmias. This case suggests that even mild ST depression might lead to life-threatening arrhythmias in the patients with silent ischemia. Adequate preoperative evaluation and careful perioperative observation are necessary for these patients.
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