[Cardiovascular adjustments in hypertensive patients. An echocardiographic study].
Echocardiography was used to asses parameters of cardiovascular function in order to identify the main cardiac adjustment mechanisms to arterial hypertension. In addition to morphological parameters of septal and parietal thickness and diameter, telesystolic (Ses) and telediastolic (Spk) stress, EF, Vcfm, the index of left ventricular mass (ILVM), hypertrophy ratio (h/r), contractility index (Do), peripheral resistances (RPT) and Tarazi's index (SAC) were evaluated. In comparison to control subjects, higher levels of PwTs, h/r, SAC, RPT and ILVM (at the limit of significance) were found in hypertensive patients, which were reflected by higher Spk and Do values. From the further analysis of data to identify patients with signs of left ventricular hypertrophy (h/r greater than 0.40 and/or ILVM greater than 140) it was concluded that the hypertrophy ratio (h/r) is the functional parameter which most closely reveals the type of myocardial adjustment. Irrespective of absolute values of ILVM, the adequacy of myocardial hypertrophy to the dimensions of the cavity is accompanied by the normalisation of stress and the return of Do values close to normal levels. Hearts with low h/r those with the highest stress levels, as well as preesting the lowest EF and the highest Do values.
Longo
F N
FN
Servizio di Angiologia Medica, Ospedale Piemonte, Messina.
Urbano
O
O
Luca
A
A
Quartuccio
S
S
Casella
F
F
Consolo
G
G
Girasella
R
R
Isola
V
V
Malara
F
F
D000328:Adult; D002319:Cardiovascular System / Q000503:physiopathology*; D004452:Echocardiography; D005260:Female; D006321:Heart / Q000503:physiopathology; D006801:Humans; D006973:Hypertension / Q000503:physiopathology*; D006984:Hypertrophy / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D009200:Myocardial Contraction
Adattamenti cardiovascolari in ipertesi. Studio ecocardiografico.