[The differential electrocardiographic diagnosis of dilated cardiomyopathy and ischemic heart disease (the data from precordial mapping)].
The authors suggest a new criterion for differential diagnosis according to the mapping of 35 ECG leads (PECG-35) in dilated cardiomyopathy (DCMP) and coronary heart disease (CHD). Analysis was made of 12 and 35 ECG leads in 120 patients. There were 60 cases of DCMP and 60 cases of CHD. According to the ECG-12 data the signs of focal cicatricial myocardial lesions were detectable in 34 cases of DCMP. According to echocardiography, the end diastolic size exceeded 5.9 cm in 23 CHD patients. The diagnostic algorithm was devised to distribute the patients into two groups. The algorithm consists in the following: 1) the sum of the areas of R waves is calculated in leads 6, 7, 13, 4, 20, 21 (+/- aR6-7I-IV parameter); 2) the sum of the areas of S waves is calculated in leads 22, 23, 24, 29, 30, 31 (sigma aS1-3V-VI parameter); 3) the parameter sigma aR6-7I-IV + sigma aS1-3V-VI is computed; 4) if sigma aR6-7I-IV + sigma aS1-3V-VI greater than 0.55 mB/s, the patient is diagnosed to have DCMP, if aR + aS less than 0.55 mB/s, the patient is diagnosed to have CHD. The sensitivity of the algorithm offered is 70-82%, with the specificity being 80%.
Saltykova
M M
MM
Riabykina
G V
GV
Sobolev
A V
AV
D000293:Adolescent; D000328:Adult; D000465:Algorithms; D002311:Cardiomyopathy, Dilated / Q000175:diagnosis*; D003327:Coronary Disease / Q000175:diagnosis*; D003937:Diagnosis, Differential; D004562:Electrocardiography / Q000295:instrumentation / Q000379:methods*; D004566:Electrodes; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged
Differentsial'naia élektrokardiograficheskaia diagnostika dilatatsionnoĭ kardiomiopatii i ishemicheskoĭ bolezni serdtsa (dannye prekordial'nogo kartirovaniia).