Prevalence and significance of ST-segment alternans during coronary angioplasty

Ian C. Gilchrist

doi:10.1016/0002-9149(91)90292-S

Prevalence and significance of ST-segment alternans during coronary angioplasty

Ian C. Gilchrist

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

Electrical alternans is a phenomenon of alternating electrocardiographic morphology on an every-other-beat basis. ST-segment alternans is often seen in the animal laboratory with subtotal or transient coronary artery occlusion.¹ In humans it has been observed in a variety of settings, such as Prinzmetal's angina and once during percutaneous transluminal coronary angioplasty (PTCA).² Although clinically rarely observed, ST-segment alternans has been correlated with subsequent malignant arrhythmias and may be an important marker of electrically unstable myocardium.³ This study was performed to determine whether PTCA-induced transmural ischemia could reproducibly induce ST-segment alternans and serve as a model for this syndrome.

Original language	English (US)
Pages (from-to)	1534-1535
Number of pages	2
Journal	The American journal of cardiology
Volume	68
Issue number	15
DOIs	https://doi.org/10.1016/0002-9149(91)90292-S
State	Published - Dec 1 1991

All Science Journal Classification (ASJC) codes

Cardiology and Cardiovascular Medicine

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10.1016/0002-9149(91)90292-S

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title = "Prevalence and significance of ST-segment alternans during coronary angioplasty",

abstract = "Electrical alternans is a phenomenon of alternating electrocardiographic morphology on an every-other-beat basis. ST-segment alternans is often seen in the animal laboratory with subtotal or transient coronary artery occlusion.1 In humans it has been observed in a variety of settings, such as Prinzmetal's angina and once during percutaneous transluminal coronary angioplasty (PTCA).2 Although clinically rarely observed, ST-segment alternans has been correlated with subsequent malignant arrhythmias and may be an important marker of electrically unstable myocardium.3 This study was performed to determine whether PTCA-induced transmural ischemia could reproducibly induce ST-segment alternans and serve as a model for this syndrome.",

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N2 - Electrical alternans is a phenomenon of alternating electrocardiographic morphology on an every-other-beat basis. ST-segment alternans is often seen in the animal laboratory with subtotal or transient coronary artery occlusion.1 In humans it has been observed in a variety of settings, such as Prinzmetal's angina and once during percutaneous transluminal coronary angioplasty (PTCA).2 Although clinically rarely observed, ST-segment alternans has been correlated with subsequent malignant arrhythmias and may be an important marker of electrically unstable myocardium.3 This study was performed to determine whether PTCA-induced transmural ischemia could reproducibly induce ST-segment alternans and serve as a model for this syndrome.

AB - Electrical alternans is a phenomenon of alternating electrocardiographic morphology on an every-other-beat basis. ST-segment alternans is often seen in the animal laboratory with subtotal or transient coronary artery occlusion.1 In humans it has been observed in a variety of settings, such as Prinzmetal's angina and once during percutaneous transluminal coronary angioplasty (PTCA).2 Although clinically rarely observed, ST-segment alternans has been correlated with subsequent malignant arrhythmias and may be an important marker of electrically unstable myocardium.3 This study was performed to determine whether PTCA-induced transmural ischemia could reproducibly induce ST-segment alternans and serve as a model for this syndrome.

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Prevalence and significance of ST-segment alternans during coronary angioplasty

Abstract

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