Reproducibility of plasma renin activity (PRA) profile in essential hypertension patients. 1978

E Reisin, and H E Eliahou

Whether the same patient with essential hypertension (EH) has the same PRA profile at different occasions, is still uncertain. The validity of the classification of these patients into low or normal renin hypertension depends upon the reproducibility of this profile. A nomogram based on PRA and 24 hr urine sodium in normals, was constructed by computing the regression line with its tolerance limits of not less than 95%. In 30 patients with EH, the PRA and 24 hr urine sodium were determined in 2 separate occasions. Classification of patients showed a change of 30% when PRA was taken during at least 2 hours recumbency. However, when PRA following ambulation is considered, the change appeared only in 6/30 (20%). This change was not large. Thus good reproducibility of PRA is obtained on post-ambulation PRA and changes larger than the 95% tolerance limits, are considered.

UI MeSH Term Description Entries
D006973 Hypertension Persistently high systemic arterial BLOOD PRESSURE. Based on multiple readings (BLOOD PRESSURE DETERMINATION), hypertension is currently defined as when SYSTOLIC PRESSURE is consistently greater than 140 mm Hg or when DIASTOLIC PRESSURE is consistently 90 mm Hg or more. Blood Pressure, High,Blood Pressures, High,High Blood Pressure,High Blood Pressures
D011187 Posture The position or physical attitude of the body. Postures
D012083 Renin A highly specific (Leu-Leu) endopeptidase that generates ANGIOTENSIN I from its precursor ANGIOTENSINOGEN, leading to a cascade of reactions which elevate BLOOD PRESSURE and increase sodium retention by the kidney in the RENIN-ANGIOTENSIN SYSTEM. The enzyme was formerly listed as EC 3.4.99.19. Angiotensin-Forming Enzyme,Angiotensinogenase,Big Renin,Cryorenin,Inactive Renin,Pre-Prorenin,Preprorenin,Prorenin,Angiotensin Forming Enzyme,Pre Prorenin,Renin, Big,Renin, Inactive
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012964 Sodium A member of the alkali group of metals. It has the atomic symbol Na, atomic number 11, and atomic weight 23. Sodium Ion Level,Sodium-23,Ion Level, Sodium,Level, Sodium Ion,Sodium 23

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