Multiform atrial tachycardia.
D000368:Aged; D018288:Carcinoma, Small Cell / Q000150:complications; D006325:Heart Atria / Q000187:drug effects; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000150:complications*; D008175:Lung Neoplasms / Q000150:complications; D008297:Male; D013610:Tachycardia / Q000188:drug therapy*; D014700:Verapamil / Q000627:therapeutic use*
D014700:Verapamil