[Screening and diagnosis for eliminating renovascular hypertension. Value of 24-hour blood pressure monitoring and color-coded duplex ultrasound diagnosis].

Background: Direct renal angiography is still the method of choice for identification of renal artery stenosis. Newer non-invasive diagnostic methods include color coded duplex sonography and also ambulatory 24-h blood pressure monitoring, since in a large proportion of patients with secondary forms of hypertension the usual blood pressure fall during nighttime disappears.

Patients And Methods: In a prospective in-hospital study we investigated 86 patients with suspected renovascular hypertension.

Relationships between ambulatory blood pressure, forearm vascular resistance, and left ventricular mass in hypertensive and normotensive subjects.

Ambulant 24 h blood pressure was recorded in 97 untreated hypertensive subjects (50 with, 47 without echocardiographic signs of left ventricular hypertrophy) and 45 matched normotensive subjects. Forearm vascular resistance was calculated from mean blood pressure and blood flow, which was measured by venous plethysmography during reactive hyperemia. Blood pressure variability was calculated by standard deviations of pressure values.

Relation of regression of left ventricular hypertrophy to changes in ambulatory blood pressure after long-term therapy with perindopril versus nifedipine.

Casual as well as ambulatory 24-hour blood pressure (BP) and echocardiographic parameters were studied in 40 patients with untreated or insufficiently treated mild to moderate essential hypertension. Left ventricular (LV) hypertrophy was assessed before and after 24 weeks of therapy with either the converting enzyme inhibitor perindopril or the calcium antagonist nifedipine. The design was a double-blind parallel study with a placebo run-in period.

[Value of 24-hour blood pressure measurement in patients with arterial hypertension, left heart enlargement and increased cardiac risk].

Non-invasive 24-h blood pressure and a 24-h electrocardiogram were recorded in 45 normotensive and 97 matched, untreated, hypertensive subjects, with and without echocardiographic signs of left-ventricular hypertrophy and without signs of coronary artery disease. Forearm vascular resistance was calculated from mean blood pressure and postischemic blood flow, which was measured by venous plethysmography. Systolic ambulant 24-h blood pressure exhibited the closest correlation with left-ventricular mass index in hypertensives (r = 0.

[Diagnosis of deep leg vein thrombosis with color-coded duplex sonography and sonographic determination of the duration of the thrombosis].

In a prospective study, 188 patients with suspected deep venous thrombosis were examined by color-coded duplex sonography. In 114 patients the diagnosis of deep venous thrombosis was based on the criteria of 1) compressibility, 2) blood flow changes during compression, and 3) pelvic level during Valsalva maneuver. In all patients the results were compared with data from contrast venography.