Investigative radiology · 1993
Hemodialysis and iopamidol clearance after subclavian venography.
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Donnelly P K, Burwell N, McBurney A, Ward J W, Walls J, Watkin E M
Аннотация
RATIONALE AND OBJECTIVES: The dialyzability of iopamidol is unknown and was investigated in patients undergoing long-term hemodialysis for chronic renal failure.
METHODS: Ten patients received 30 ml Niopam 300 (Bracco SpA, Milan, Italy) (identical to 18372 mg iopamidol) intravenously into a forearm vein to investigate for occult subclavian stenosis.
RESULTS: The elimination half-life of iopamidol before hemodialysis was 69.6 hours and during 4 hours of hemodialysis was 3.5 hours. A single 4-hour hemodialysis cleared 55.7% (95% Ci 51-5-59.8) of the administered dose, while second and third dialyses cleared 25.3% (95% Ci 21.4-29.1) and 10.1% (95% Ci 7.7-12.6) of the administered dose, respectively. Two patients with significant residual urine excretion excreted more than 10% of the administered dose in the urine. For anuric patients, extrarenal clearance provided total body clearance of up to 0.266 L/hr.
CONCLUSIONS: Hemodialysis is a rapid and efficient means of clearing iopamidol provided it is performed soon after the contrast study.
METHODS: Ten patients received 30 ml Niopam 300 (Bracco SpA, Milan, Italy) (identical to 18372 mg iopamidol) intravenously into a forearm vein to investigate for occult subclavian stenosis.
RESULTS: The elimination half-life of iopamidol before hemodialysis was 69.6 hours and during 4 hours of hemodialysis was 3.5 hours. A single 4-hour hemodialysis cleared 55.7% (95% Ci 51-5-59.8) of the administered dose, while second and third dialyses cleared 25.3% (95% Ci 21.4-29.1) and 10.1% (95% Ci 7.7-12.6) of the administered dose, respectively. Two patients with significant residual urine excretion excreted more than 10% of the administered dose in the urine. For anuric patients, extrarenal clearance provided total body clearance of up to 0.266 L/hr.
CONCLUSIONS: Hemodialysis is a rapid and efficient means of clearing iopamidol provided it is performed soon after the contrast study.