[Mean renal transit time of I-123 orthoiodohippurate in normotensive and hypertensive subjects].

The author executed the renography with I-123-orthoiodohippurate in 18 normotensive patients and in 12 genuine hypertensive patients. The analysis of the renography allowed the computation of the mean kidney transit time of the I-123-orthoiodohippurate and the effective renal plasma flow. The two parameters were regarded cumulatively for both kidneys. The effective renal plasma flow was divided for the body mass index and in this way the flow for unit of the body mass index was computed. The results were tested with the t of Student and either the mean kidney transit time either the effective renal plasma flow were significantly decreased in the hypertensive patients. The author explains this observation saying that in the tested hypertensive subjects the turnover of the I-123-orthoiodohippurate is increased.