Systolic time intervals and 24-hours free urinary catecholamines in normo-and hypertensives

QS2 interval was significantly greater in patients with FEH than in both normotensives [P <0.001] and patients with BLH [P <0.01]. No significant difference was found between QS2 interval in patients with BLH and normotensives. There was an insignificant difference between LVET in the three groups investigated. PEP in patients with FEH was significantly greater than both normotensives [P <0.001] and patients with BLH [P <0.001], while PEP in patients with BLH was significantly shorter than in normotensives and in patients with FEH [P <0.001]. PEP/LVET in patients with FEH was significantly greater than in both normotensives and patients with BLH [P <0.001]. In patients with BLH, PEP/LVET was significantly less than in both normotensives and patients with FEH [P <0.001]. 24-hours urinary catecholamines in patients with FEH was significantly greater [P <0.01] than in normotensives but insignificantly different from that in patients with BLH. 24-hours urinary catecholamines in patients with BLH was significantly higher than in normotensives [P <0.001]. The present study showed that myocardial contractility is diminished in patients with fixed essential hypertension, and increased in patients with border line hypertension than in the control subjects. Also, the study proved that the overall activity of the sympathoadrenal systems is increased in patients with both fixed essential and border line hypertension than in the control subjects

Systolic time intervals and 24-hours free urinary catecholamines in normo-and hypertensives

QS2 interval was significantly greater in patients with FEH than in both normotensives [P <0.001] and patients with BLH [P <0.01]. No significant difference was found between QS2 interval in patients with BLH and normotensives. There was an insignificant difference between LVET in the three groups investigated. PEP in patients with FEH was significantly greater than both normotensives [P <0.001] and patients with BLH [P <0.001], while PEP in patients with BLH was significantly shorter than in normotensives and in patients with FEH [P <0.001]. PEP/LVET in patients with FEH was significantly greater than in both normotensives and patients with BLH [P <0.001]. In patients with BLH, PEP/LVET was significantly less than in both normotensives and patients with FEH [P <0.001]. 24-hours urinary catecholamines in patients with FEH was significantly greater [P <0.01] than in normotensives but insignificantly different from that in patients with BLH. 24-hours urinary catecholamines in patients with BLH was significantly higher than in normotensives [P <0.001]. The present study showed that myocardial contractility is diminished in patients with fixed essential hypertension, and increased in patients with border line hypertension than in the control subjects. Also, the study proved that the overall activity of the sympathoadrenal systems is increased in patients with both fixed essential and border line hypertension than in the control subjects

Bacteriological studies in infective endocarditis and predisposing factors

The results of blood cultures from 60 patients under going cardiac operations show 25% incidence of bacteraemia. Bacteraemia was higher in open cardiac surgery than in closed ones. Staphylococcus epidermis was the commonest organism gaining access to the blood streams during surgical operations on the heart. Bacteraemia due to tooth extraction, urological procedures and sigmoidoscopy was studied. The incidence of positive blood culture in 33 patients with infective endocarditis was 60.6%. This relatively decreased incidence of positive blood culture is due to the common use of antibiotics empirically in Egypt. Gram negative bacilli were the commonest organisms isolated in infective endocarditis [PVE]. Organisms previously considered non pathogenic are the cause of nearly 30% of positive blood culture in IE

Angiotensin infusion test in normo-and hypertensive subjects

The reactivity of vascular smooth muscles in thirty patients with both fixed essential and border line hypertension was studied and compared with fourteen normotensive control subjects. Angiotensin II infusion was given in a concentration of 1 mcg of 5% glucose at a rate of 0.01, then 0.02 mcg/kg/m with frequent recording of BP and heart rate

Tyramine test in normo and hypertensive subjects

The effect of sympathomimetic amine tyramine was studied in 19 patients with fixed essential and border line hypertension compared with 11 normotensive control subjects. After obtaining control measurements, tyramine solution was injected IV in doses of 1, 2 and 3 mg separated by at least nine-ten minutes