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Interactive effects on renal function between renal ischemia and intravascular contrast media
T Almén1, D Bergqvist, C Cederholm
1Department of Experimental Research, Malmö General Hospital, University of Lund, Sweden.
Investigative Radiology
|September 1, 1988
Summary
Residual contrast media (CM) from preoperative imaging can worsen kidney injury during surgery involving temporary renal artery occlusion. Increasing the time between CM injection and surgery reduces this risk by allowing more CM to clear from the kidneys.
Area of Science:
- Nephrology
- Radiology
- Surgical Research
Background:
- Intravascular contrast media (CM) administered for diagnostic imaging may persist in renal tissue.
- Residual CM has been implicated in potentiating kidney injury during surgical procedures.
- Understanding the interaction between CM and renal ischemia is crucial for patient safety.
Purpose of the Study:
- To review recent investigations on the potentiation of renal injury by residual intravascular contrast media.
- To identify clinical scenarios where this potentiation is particularly relevant.
- To explore strategies for mitigating CM-induced renal injury during surgery.
Main Methods:
- Review of recent animal and clinical investigations.
- Analysis of specific surgical contexts involving contrast media and renal artery occlusion.
- Evaluation of the impact of timing between CM administration and renal artery occlusion.
Main Results:
- Residual intravascular CM can significantly increase (potentiate) renal injury from temporary intraoperative renal artery occlusion.
- This potentiation is observed in aortorenal reconstructive surgery, kidney harvesting, and percutaneous renal artery dilatation.
- The amount of residual CM in the kidney at the time of occlusion is a key factor.
Conclusions:
- Prolonging the interval between CM injection and renal artery occlusion decreases CM accumulation in the kidney.
- This extended interval reduces the potentiation of renal injury.
- Optimizing the timing of procedures involving CM and renal artery occlusion is essential for preventing surgical complications.