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[Pre-transplantation evaluation with echo-Doppler of the receptor's vascular risk factors]
F J Burgos Revilla1, V Gómez Dosantos, R Rodríguez
1Servicio de Urología, Hospital Ramón y Cajal, Madrid.
Insights
Eco-Doppler ultrasound effectively assesses vascular risk in potential renal transplant recipients by analyzing leg artery blood flow. This non-invasive method helps identify risk factors like high blood pressure and smoking before transplantation.
Area of Science:
- Vascular Surgery
- Nephrology
- Medical Imaging
Background:
- Vascular complications are a significant concern for renal transplant recipients.
- Pre-transplant assessment of vascular health is crucial for patient outcomes.
Purpose of the Study:
- To evaluate the utility of Eco-Doppler ultrasonography in assessing arterial vascular risk in potential renal transplant candidates.
- To identify correlations between vascular risk factors and Eco-Doppler parameters in the lower limb arteries.
Main Methods:
- Eco-Doppler studies were performed on 51 potential renal transplant recipients, focusing on posterior tibial, popliteal, and posterior tibial arteries.
- Vascular parameters including acceleration, mean rate, maximum systolic rate, minimal diastolic rate, pulsatility index (PI), and resistance index (RI) were measured.
- Vascular risk factors such as arterial hypertension, smoking, duration of hemodialysis, cholesterol, and triglyceride levels were assessed.
Main Results:
- The popliteal artery exhibited maximal resistance and pulsatility indices and minimal systolic rate and mean flow rate.
- Significant correlations were found between smoking, systolic blood pressure, hypertension duration, cholesterol levels, and hemodialysis duration with Eco-Doppler parameters.
- Post-renal transplant, patients showed increased resistance and pulsatility with decreased mean and maximum systolic rates in the ipsilateral popliteal and posterior tibial arteries.
Conclusions:
- Eco-Doppler ultrasonography is a valuable, non-invasive tool for evaluating the vascular risk profile of individuals awaiting renal transplantation.
- The study highlights the relationship between common vascular risk factors and objective Doppler measurements in the lower limb arteries of potential transplant recipients.
Abstract:
A total of 51 potential recipients of a renal transplant (RT) have been evaluated with an Eco-Doppler study of the posterior femoral, popliteal and posterior tibial corteries. Acceleration (AC), mean rate (MR), maximum systolic rate (MXSR) and minimal diastolic rate (MNDR), as well as pulsatility (PI) and resistance index (RI) were measured. Arterial high blood pressure (HBP), smoking, time in haemodialysis (HD) and cholesterol and triglycerides levels, were evaluated as vascular risk factors. RI and PI were maximal, and MXSR, MR and AC minimal at the popliteal artery level. Smoking (number of cigarettes/day) (R = 0.77), systolic blood pressure (BP) (R = 0.43), time of HBP evolution (R = 0.044), cholesterol level (R = 0.43) and time in HD (R = 0.35) correlate with Eco-Doppler parameters. Fifteen of these 51 patients underwent transplantation, and increased RR and PR with decreased MR and MXSR were seen post-RT in the ipsilateral popliteal and posterior tibial arteries. Eco-Doppler is a useful technique to evaluate the vascular risk of potential RT recipients.