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Showing papers by "Maurizio Galderisi published in 1993"


Journal ArticleDOI
TL;DR: Heart rate was a major determinant of all 5 Doppler indexes of diastolic filling; heart rate was inversely associated with peak velocity E, E, and time velocity integral E/A, and was directly associated withpeak velocity A and atrial filling fraction.
Abstract: The relations of heart rate and PR interval to Doppler-derived diastolic indexes were examined in 260 men (mean age 75 years) and 462 women (mean age 76 years) from the Framingham Heart Study. Subjects receiving any antihypertensive or cardiac medications were excluded from eligibility; those with mitral stenosis or prosthesis, pacemaker, atrial fibrillation, arrhythmia, left bundle branch block, congestive heart failure, previous myocardial infarction, and technically inadequate Doppler study were also excluded. Peak velocity of early (E) and late (A) diastolic left ventricular (LV) filling, ratio of peak velocities E/A, ratio of time velocity integrals E/A, and atrial filling fraction were studied by multivariable analyses adjusting for age, sex, blood pressure, heart rate and PR interval. Heart rate was a major determinant of all 5 Doppler indexes of diastolic filling; heart rate was inversely associated with peak velocity E, E/A, and time velocity integral E/A, and was directly associated with peak velocity A and atrial filling fraction. PR interval was inversely associated with time velocity integral E/A (p < 0.01) and directly associated with atrial filling fraction. The results were largely unaltered after further adjustment for LV wall thickness, LV end-diastolic diameter and left atrial diameter (in addition to age, sex and blood pressure). Heart rate and PR interval are independent contributors to Doppler-assessed LV diastolic filling in the elderly. The atrial contribution to LV filling depends on its timing in the cardiac cycle and on heart rate. Failure to account for heart rate and PR interval may lead to inappropriate assessment of Doppler diastolic filling.

72 citations


Journal ArticleDOI
TL;DR: There was evidence for a slight progressive decline in indexes of LV inflow with age, and reference values for the various Doppler parameters were generated on the basis of this healthy elderly cohort.
Abstract: Congestive heart failure increases in prevalence with age. A large number of elderly subjects with heart failure have either normal or slightly reduced left ventricular (LV) systolic function; their symptoms are due to diastolic LV dysfunction. Reference values for Doppler indexes of LV diastolic filling in a large sample of the very elderly (>70) have not been reported previously. The objective of this study was to generate reference values for Doppler indexes of LV filling in a population of apparently healthy elderly men and women. A total of 1201 surviving original subjects of the Framingham Heart Study were evaluated by Doppler echocardiography. A subset of 114 rigorously selected healthy subjects (26 men and 88 women) aged 70 to 87 years (mean 76) constituted the study group. Measurements of seven commonly used Doppler indexes were obtained. Mean and 2.5, 5, 10, 25, 50, 75, 90, 95, and 97.5 percentile values for Doppler diastolic indexes were generated. Stepwise regression analyses were performed to determine the relation of diastolic LV filling to age group (70 to 74 years, 75 to 79 years, and 80 years and over), sex, and other clinical variables. Reference values for the various Doppler parameters were generated on the basis of this healthy elderly cohort. There was evidence for a slight progressive decline in indexes of LV inflow with age. In 87% of this elderly population the ratio of peak early to late velocities of LV diastolic inflow was less than 1.0. Although there were trends toward augmentation of atrial contribution to ventricular filling with advancing age, only peak velocity of late filling (56 vs 62 cm, P = 0.005) changed significantly with age. The present study extends our knowledge of Doppler LV filling patterns in the elderly and documents a minor degree of further impairment in indexes of LV filling with advancing age. The availability of reference Doppler values may prove useful for the identification of LV diastolic dysfunction, which is an important cause of congestive heart failure in the elderly.

65 citations


Journal ArticleDOI
TL;DR: Borderline systolic hypertension was the most frequent form of untreated hypertension in this elderly group and the sum of LV wall thicknesses was significantly higher in borderline hypertensive subjects than in normotensive ones.
Abstract: Abnormalities in left ventricular (LV) structure and function have been shown in patients with diastolic hypertension and recently in subjects with isolated systolic hypertension. The purpose of this study was to determine whether abnormalities of cardiac structure or function are present in elderly subjects with borderline isolated systolic hypertension (defined as systolic blood pressure [BP] between 140 and 159 mm Hg, and diastolic BP

48 citations


Journal ArticleDOI
TL;DR: It is concluded that male gender and a family history of hypertension are stronger determinants of early changes in cardiac structure than hemodynamic load in a group of young, normotensive adults.

20 citations


Journal ArticleDOI
TL;DR: The strategy of antihypertensive treatment has to be reconsidered on the basis of the presence of LVH and could lead to decreased cardiovascular morbidity and mortality of patients with LVH.
Abstract: The management of left ventricular hypertrophy (LVH) presupposes that the patient is identified by echocardiography and is carefully evaluated for risk stratification, taking into consideration possible associated complications. The role of nonpharmacological treatment is limited, except in obese patients. Drug treatment, especially using calcium antagonists, angiotensin converting enzyme inhibitors and beta-blockers, has proved to be effective in reducing LVH. These drugs are also effective in controlling, if not reversing, the associated pathophysiological changes and complications, such as impaired systolic and diastolic function, and ventricular arrhythmias. There is, however, no evidence of any beneficial effect on myocardial ischaemia. The desirable goal is LVH regression, but it may not be achievable in over 50% of patients, and it is not possible to identify patients in whom regression is likely. Regression, or control of each sequelae, could prevent sudden death, the evolution of hypertensive heart disease leading to heart failure and, probably, myocardial infarction. Patients must be followed carefully during and, particularly, at the beginning of the antihypertensive therapy which has to begradually introduced. At best, blood pressure must be reduced while avoiding hypotension. The strategy of antihypertensive treatment has to be reconsidered on the basis of the presence of LVH and could lead to decreased cardiovascular morbidity and mortality of patients with LVH.

11 citations



Journal ArticleDOI
TL;DR: A combination of ketanserin and enalapril increased the favourable characteristics of both drugs and showed comparable antihypertensive and haemodynamic activities.
Abstract: The antihypertensive and haemodynamic efficacies of ketanserin and ketanserin plus enalapril were compared. The monotherapy phase of the study involved the oral administration of 40 mg ketanserin twice daily or 20 mg enalapril once daily for 12 weeks to 25 hypertensive patients. Systolic and diastolic blood pressures were significantly reduced by both drugs. Left ventricular function both at rest and during effort improved significantly with either drug. This was due to a reduction of end-systolic volume; end-diastolic volume decreased only with the use of enalapril. Combination therapy, involving 16 patients and both drugs given at the original dosage schedule for 12 weeks, resulted in further reductions in systolic and diastolic blood pressures, and an improvement in left ventricular function; indices of diastolic function were not modified. In conclusion, ketanserin and enalapril showed comparable antihypertensive and haemodynamic activities. A combination of ketanserin and enalapril increased the favourable characteristics of both drugs.

1 citations