الفهرس يوجد فقط 14 صفحة متاحة للعرض العام
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المستخلص
, Angina pectoris is a frequent symptom in patients with
hypertensive LVHdespite normal epicardial coronary arteries.
One of the supposed mechanisms of occurrence of chest pain
in those patients is the impairment of CFR. Coronary flow
reserve is defined as the difference between maximal and
baseline coronary flow. 40 hypertensive subjects were selected
to enter our study and were subjected to the following:
1. History and clinical examination.
2. 12 lead ECG.
3. Transthoracic echo, ardiooraphy.
4. Coronary angiography.
5. Transoesophageal echocardiography.
Subjects were divided into 3 groups:
Group (A): Normal healthy control subjects. (10)
Group (B): Hypertensive non-LVH. (13)
Group (C): Hypertensive LVH. (17)
We recorded peak diastolic velocity (PDV) and peak
systolic velocity (PSV) on the bifurcation of main coronary
artery during rest, after intravenous infusion dobutamine.
We calculated CFR as the ratio of PDV and PSV after
dobutamine. and PDV andPSV at resting baseline. We found
that eFR was impaired in patients with hypertension either
with or without LVB in comparison with the control group.
Also the impairment ofCFR was more in LVH group than non
LVII group.