These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: [Non-Q-wave-electrocardiograms. Signs of earlier myocardial infarction].
    Author: Recke SH.
    Journal: Med Klin Intensivmed Notfmed; 2012 Nov; 107(8):634-40. PubMed ID: 22847458.
    Abstract:
    An increasing number of elderly people and diabetes patients with myocardial infarction go unrecognized because of painless ischemia and regression of major Q-waves over time. An increased awareness of diagnostic electrocardiogram (ECG) abnormalities other than Q-waves should allow physicians to optimize patient management. Particularly emphasized is the R-peak delay in V6, i.e. the R-peak in V6 being later than the S-peak in V2, as a sign of masked anterior myocardial infarction and ECG findings if infarcts are masked by left ventricular hemiblocks and left bundle branch block (LBBB). In left anterior hemiblocks dramatically decreased R-waves in leads II, III and AVF in conjunction with disappearance of Q-waves in leads I and aVL help to identify posterodiaphragmatic infarction. The left posterior hemiblock is itself a potent indicator of underlying posterodiaphragmatic infarction not recognized by Q-waves. In LBBB Cabrera's sign, RSR' morphology in the left-sided or inferior leads, inverse R-progression from V1 to V3 and primary repolarization abnormalities overlying the secondary T-wave changes are specific indicators of myocardial infarction. QRS-prolongation greater than 150 ms independently identifies ventricular function impairment in chronic coronary heart disease.
    [Abstract] [Full Text] [Related] [New Search]