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  • Title: Left ventricular filling is usually normal in uncomplicated coronary disease.
    Author: Inouye IK, Hirsch AT, Loge D, Tubau JF, Massie BM.
    Journal: Am Heart J; 1985 Aug; 110(2):326-31. PubMed ID: 4025109.
    Abstract:
    Abnormalities in left ventricular filling have been described as an early finding in coronary artery disease (CAD) and more recently, in hypertension (HTN). The present study was undertaken to compare the prevalence and pattern of diastolic dysfunction in these two entities. Three groups of patients were studied: 10 normal volunteers (NLS), 39 HTN patients, and 30 CAD patients. The CAD patients were divided into two subgroups--one with normal ejection fraction (mean 0.60 +/- 0.06) and the second with either a depressed ejection fraction (EF) or a history of HTN (mean EF 0.44 +/- 0.15). The diastolic indices examined were peak filling rate (PFR, in end-diastolic volume [EDV]/sec), time to peak filling rate (TPFR, in msec), and first-third filling fraction (FF 1/3, in sec-1). The PFR in CAD and HTN was significantly reduced (1.86 +/- 0.63 and 2.29 +/- 0.49 vs 2.70 +/- 0.35 EDV/sec in NLS, p less than 0.025 and p less than 0.001, respectively), with the CAD group also being significantly lower than the HTN group (p less than 0.005). TPFR was prolonged in HTN, but not in CAD. FF 1/3 was reduced in both HTN and CAD (0.38 +/- 0.11 and 0.50 +/- 0.14 vs 0.61 +/- 0.06 sec-1 in NLS, p less than 0.001 and p less than 0.025, respectively), but it was significantly lower in HTN than in CAD (p less than 0.001). However, when the subgroup of CAD patients with normal global systolic function was examined separately, diastolic indices were only slightly depressed. More importantly, only one, two, and five patients had PFR, TPFR, and FF 1/3, respectively, which were below the normal values of our laboratory.
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