[Is myocardial impairment in idiopathic dilated hypertrophic cardiomyopathy reversible by carvedilol?: a case report].
A 64-year-old woman with dilated hypertrophic cardiomyopathy was treated by beta-blocker, because of recurrent episodes of congestive heart failure. Carvedilol administration was started with a dose of 2.5 mg/day, and gradually increased to the dose of 20 mg/day 3 months later. Her functional class recovered from New York Heart Association stage IV to stage II. Thallium-201 scintigraphy demonstrated advanced myocardial damage: defect/low perfusion in the anteroseptal, infero-posterior and apical regions. Iodine-123 beta-methyl-p-iodophenyl-pentadecanoic acid scintigraphy confirmed these findings. However, the scintigraphic abnormalities had reversed to near normal perfusion and metabolism similar to those of stunned myocardium after an ischemic episode. This case demonstrates the recovery of myocardial impairment during beta-blocker therapy in a patient with dilated hypertrophic cardiomyopathy.
Ochiai
N
N
Department of Cardiology, Saiseikai Kyoto Hospital.
Furukawa
K
K
Ebizawa
T
T
Yagi
T
T
Akashi
K
K
Nakamura
T
T
Azuma
A
A
Sugihara
H
H
D000319:Adrenergic beta-Antagonists / Q000008:administration & dosage / Q000627:therapeutic use*; D002227:Carbazoles / Q000008:administration & dosage / Q000627:therapeutic use*; D002311:Cardiomyopathy, Dilated / Q000000981:diagnostic imaging / Q000188:drug therapy*; D000077261:Carvedilol; D005227:Fatty Acids; D005260:Female; D006333:Heart Failure / Q000188:drug therapy; D006801:Humans; D007457:Iodine Radioisotopes; D007462:Iodobenzenes; D008875:Middle Aged; D011412:Propanolamines / Q000008:administration & dosage / Q000627:therapeutic use*; D011877:Radionuclide Imaging; D013794:Thallium Radioisotopes
D000319:Adrenergic beta-Antagonists; D002227:Carbazoles; D005227:Fatty Acids; D007457:Iodine Radioisotopes; D007462:Iodobenzenes; D011412:Propanolamines; D013794:Thallium Radioisotopes; C049338:iodofiltic acid; D000077261:Carvedilol