[Practical importance of the exact diagnosis of fetal arrhythmias].
Ultrasound M-mode examinations were performed at 78 pregnant women in the second half of pregnancy during 1 year period, because of fetal dysrhythmia. Distribution of the diagnoses of the fetuses: near 40% sinus rhythm, 5.13% organic heart diseases, 48.72% supraventricular arrhythmia, 5.13% atrioventricular block, 1.28% ventricular extrasystole. In 11.54% of the cases intrauterine treatment was necessary (supraventricular tachycardia) for prevention the congestive heart failure. The transplacental treatments were as follows: in 3 cases digitalis, in 3 cases digitalis + verapamil, in 3 cases digitalis + amiodaron. In two cases (refractory to the mentioned treatments) direct intrafunicular, intravascular digitalis + amiodaron treatment was reasonable. Being the correct diagnosis of dysrhythmias possible only with ultrasound M-mode examination, all of the recognised cases have to be sent to adequate ward, where a suitable equipment is available.