Unstable angina non ST elevation myocardial infarction electrocardiogram: Difference between revisions
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* Flipped or [[inverted T wave]]s | * Flipped or [[inverted T wave]]s | ||
* [[ST depression]] as shown below. ST depression carries the poorest prognosis. Greater magnitudes of down sloping ST depression are associated with a high in-hospital, 30-day and 1-year mortality. | * [[ST depression]] as shown below. ST depression carries the poorest prognosis. Greater magnitudes of down sloping ST depression are associated with a high in-hospital, 30-day and 1-year mortality. | ||
Wellens' syndrome is an [[electrocardiographic]] manifestation of critical proximal [[left anterior descending]] ([[LAD]]) coronary artery [[stenosis]] in patients with [[unstable angina]]. It is characterized by symmetrical, often deep >2mm, [[T wave]] inversions in the anterior precordial leads. A less common variant is biphasic T wave inversions in the same leads.<ref>{{cite journal | last = Tandy | first = TK |coauthors = Bottomy DP, Lewis JG | title = Wellens' syndrome | journal = Annals of Emergency Medicine | volume = 33 | issue = 3 | pages = 347–351 | year = 1999 | month = March | pmid = 10036351 | doi = 10.1016/S0196-0644(99)70373-2}}</ref> | |||
==EKG Examples== | ==EKG Examples== | ||
Revision as of 03:29, 3 December 2012
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Unstable angina / NSTEMI Microchapters |
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Differentiating Unstable Angina/Non-ST Elevation Myocardial Infarction from other Disorders |
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Diagnosis |
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Laboratory Findings |
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Treatment |
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Antitplatelet Therapy |
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Additional Management Considerations for Antiplatelet and Anticoagulant Therapy |
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Risk Stratification Before Discharge for Patients With an Ischemia-Guided Strategy of NSTE-ACS |
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editors-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]; Varun Kumar, M.B.B.S.; Lakshmi Gopalakrishnan, M.B.B.S.
Overview
The EKG in patients with unstable angina can be variable. In some cases, no changes on EKG will be appreciated. In other cases, a resting EKG may show flipped or inverted T waves, ST segment depression, or non-specific ST-T changes. It is the first line of assessment in any patient suspected of having unstable angina.
Electrocardiogram in Unstable angina / NSTEMI
The resting electrocardiogram in the patient with unstable angina / non-ST elevation MI may show any of the following:
- No changes
- Non specific ST / T wave changes
- Flipped or inverted T waves
- ST depression as shown below. ST depression carries the poorest prognosis. Greater magnitudes of down sloping ST depression are associated with a high in-hospital, 30-day and 1-year mortality.
Wellens' syndrome is an electrocardiographic manifestation of critical proximal left anterior descending (LAD) coronary artery stenosis in patients with unstable angina. It is characterized by symmetrical, often deep >2mm, T wave inversions in the anterior precordial leads. A less common variant is biphasic T wave inversions in the same leads.[1]
EKG Examples
Shown below is an EKG from a patient with unstable angina. ST depression in V2, V3,V4 and V6 can be noted.
Copyleft image obtained courtesy of ECGpedia,http://en.ecgpedia.org/wiki/Main_Page