Table 2.

Characteristics of failing hearts

Heart	Age, yr	Sex	Race	Etiology	RV Function	Heart Weight, g
303122	51	Female	Caucasian	DCM	Hypokinetic	508
709841	50	Male	Caucasian	ICM	Severely reduced	714
450564	30	Male	Caucasian	DCM	Severely reduced	482
328163	63	Male	Caucasian	ICM	Normal	506
479062	50	Male	Caucasian	ICM	Moderately reduced	636
323104	63	Male	Caucasian	Nonischemic	Moderately reduced	543
537263	62	Male	African-American	ICM	Severely reduced	427
522421	56	Female	Caucasian	DCM	Moderately reduced	470
214010	64	Male	Caucasian	ICM	Moderately reduced	495
597750	67	Male	Caucasian	ICM	Moderately reduced	630

Of note, heart 328163 had apparent normal right ventricular (RV) function based on echocardiography. Of the 2 muscles investigated, 1 indeed had a positive force-frequency relationship, while the other was flat. DCM, dilated cardiomyopathy; ICM, ischemic cardiomyopathy.