Influence on the Radiorenogram of Renal Tract Dead Space Volume and Urinary Flow Rate a Clinical Study in Hydronephrosis of Pregnancy

Abstract

Earlier experimental experience of the influence on the radiorenogram of different drainage conditions was investigated for clinical applicability. The time to the renogram peak was verified to be a suitable parameter for estimating renal drainage function, as expressed by the quotient between renal tract dead space volume and urinary flow rate. Statistical analysis of the relation provided very good fit to a linear regression in the range studied. A similar relationship was found for minimum renal transit time, but the statistical fit to a linear regression was less satisfactory. The clinical application of the experience is discussed.

Key Words:

• Minimum renal transit time
• radio-isotope renography
• renal drainage
• renal tract dead space volume
• urinary flow rate