[The low-amplitude elements of the ECG in diabetic patients].

Abstract

To estimate the rate of changes in low-amplitude elements of the ECG (P wave greater than or equal to 120 ms, distance between its bifurcate peaks greater than 30 ms, P of the terminal index greater than 1.5 microV/s, corrected according to Bazett's formula, PQ interval greater than 200.0 ms, T-U segment displaced downwards from the isoline, negative, biphasic U wave), the additionally enhanced ECGs (1 mV = 50 mm) were recorded in 137 patients suffering from type I diabetes mellitus (DM) without the clinical signs of heart damage (CSHD), in 35 patients with type II DM, in 83 with diabetic myocardiodystrophy (DMD) associated with type I DM and 115 in association with type II DM, in 19 patients with coronary heart disease (CHD) in the presence of type I DM, and in 83 patients suffering from CHD and type II DM. It has been established that changes in low-amplitude elements of the ECG may occur in 55-60% of patients suffering from DM without CSHD, 79-80% of patients with DMD, and in 90-100% of patients with CHD in the presence of DM versus 18.2% in the control group of normals (110 test subjects). In most cases, the changes in the atrial complex of the ECG are not coupled with those seen in the TU-U complex in patients suffering from DM without CSHD and DMD and may be coupled in patients suffering from CHD and DM. The increasing rate of the changes in the P complex together with those in TU-U was ascertained in patients suffering from DM without CSHD, DMD, CHD in the presence of both type I and type II DM. The DM type did not exert any appreciable effect on the characteristics or the rate of changes in low-amplitude elements of the ECG.

• Authors: E A Vaĭtkus
• Journal: Terapevticheskii arkhiv (Ter Arkh) Vol. 63 Issue 10 Pg. 41-4 ( 1991) ISSN: 0040-3660 [Print] Russia (Federation)
• Vernacular Title: Izuchenie nizkoamplitudnykh élementov EKG u bol'nykh sakharnym diabetom.
• PMID: 1805419 (Publication Type: Comparative Study, English Abstract, Journal Article)

Topics

• Cardiomyopathies (diagnosis, etiology)
• Coronary Disease (diagnosis, etiology)
• Diabetes Mellitus, Type 1 (complications, diagnosis)
• Diabetes Mellitus, Type 2 (complications, diagnosis)
• Electrocardiography (methods)
• Exercise Test
• Humans