Chronic obstructive pulmonary disease and hypertrophic obstructive cardiomyopathy: Two antagonistic obstructions

Hypertensive heart disease and bronchodilators: Potential left ventricular outflow obstruction

“…By these characteristics they can increase the contractility across the LVOT in patients with hypertrophic hearts. Patients with hypertrophic cardiomyopathies, as well as hypertensive heart disease, are vulnerable to LVOT obstruction when drugs with sympathomimetic action are administered [8,9]. Chronic treatment of these patients with beta 1 -blockers and/or angiotensin II antagonists, does not completely protect them against such complications [10].…”