Prognostic significance of low QRS voltage on the admission electrocardiogram in acute coronary syndromes

Prognostic value of initial QRS analysis in anterior STEMI: Correlation with left ventricular systolic dysfunction, serum biomarkers, and cardiac outcomes

“…It is known that low QRS voltage on the presenting ECG can predict short-and long-term mortality in patients with acute MI in the prethrombolytic era (Fox, Tomlinson, Meek, Portal, & Aber, 1975). In addition, it has also shown its predictive value in CV mortality in a more recent study that has reported worse LVEF and higher rates of in-hospital and 6-month mortality in patients with acute coronary syndrome (Tan et al, 2015). The relationship found in our study between lower QRS voltage on ECG after acute MI and higher PTH levels may mean that both parameters are markers of a worse CV prognosis.…”

Clinical correlates and prognostic values of pseudoinfarction in cardiac light-chain amyloidosis

“…This inverse relationship got high sensitivity and specificity in the diagnosis and even was more common in the advanced stage of disease [21]. The pathophysiology of low voltage was incompletely understood, but may present widespread myocardial ischemia and injury, with fewer myocytes available to generate and transmit electrical potential [22]. Poor R-wave progression could be caused by anterior wall asynergy due to myocardial ischemia and LV hypertrophy, both of which were the possible mechanisms of pseudoinfarction [23].…”

Nondiagnostic ST Elevations With Chest Pain

“…Because STE is proportional to the QRS complex, low voltage may mask the extent of ST segment deviation and thus may explain how nondiagnostic STE develop. Although Tan et al showed that low voltage ECGs were associated with a lower incidence of ST segment deviation 0.5 mm or greater, they were not associated with a lower incidence of ST segment elevation 1 mm or greater …”