[Electrocardiographic changes in patients with airway obstruction].

In severe bronchial asthma reversible electrocardiographic abnormalities are not rare. It is usually sinus tachycardia, right axis deviation, atrial enlargement and right bundle branch block. Transient ST-segment depression or elevation in inferior leads in severe acute asthma has been observed since long. Adrenergic stimulation, hyperventilation, hyperinflation and primary or secondary coronary insufficiency were as a causes. Severity of ECG signs correlated with the degree of airway obstruction. Our study was aimed at investigation of electrocardiographic abnormalities in chronic pulmonary obstructive disease and asthma and to assess the relationship of the extent of airway obstruction to the frequency of ECG changes. Correlation was found of ECG manifestation of sinus tachycardia, right ventricle hypertrophy. ventricular premature complex, right bundle branch block with the degree of airway obstruction.