NCT Number: NCT07037485
This study aims to investigate the predictive value of Doppler-based renal ultrasound and urinary oxygen tension in the development of acute kidney injury after cardiac surgery.
Interested in participating?
Request Info21 year and older
All sexes
Observational
Tanta, El-Gharbia, 31527, Egypt
Location status: Recruiting
Aliaa M Belal, MD
SUB_INVESTIGATOR
Amany M Badr, Master
CONTACT
Ayman A Yousef, MD
SUB_INVESTIGATOR
Rabab M Mohammed, MD
SUB_INVESTIGATOR
Sabry M Amin, MD
SUB_INVESTIGATOR
Cardiac surgery-associated acute kidney injury (CSA-AKI) is a complication following cardiac surgery occurring in 15-30% of patients. It is associated with increased morbidity and mortality as well as prolonged hospital stay and higher medical costs.
The renal artery pulsatility index (RAPI), which is determined using Doppler measurements, has been reported to detect patients with a high risk of AKI. Additionally, the renal resistance index (RRI), measured by Doppler ultrasound, can accurately predict the occurrence of AKI.
Urinary oxygen partial pressure in the bladder has been shown to decrease in the setting of sepsis, reduced renal blood flow, and decreased cardiac output.
Healthy volunteers accepted: No
Only the study team can determine whether someone qualifies for participation.
Inclusion criteria
Exclusion criteria
It will be measured with ultrasound-Doppler using an abdominal curvilinear probe ultrasonography by two independent, trained sonographers (who will not be involved in patient care). After visualizing the kidney in ultrasound mode and checking for renal abnormalities, an arcuate or inter-lobar artery will be localized, and three successive Doppler measurements at different positions in the kidney (high, middle, and low) will be performed. The average value for each kidney will be taken.
The renal resistive index will be calculated as follows:
(systolic peak flow velocity - diastolic minimum flow velocity)/systolic peak flow velocity
It will be measured using an abdominal curvilinear probe ultrasonography by two independent, trained sonographers (who will not be involved in patient care). After visualizing the kidney, the interlobular artery will be located using color Doppler mode, and the velocity of the interlobular arteries will be assessed in one or two kidneys.
The Renal Artery Pulsatility Index (RAPI) will be calculated as follows:
RAPI = [(peak systolic velocity) - (end diastolic velocity)] /average velocity
Urinary oxygen tension (PUO2) will be measured preoperatively (baseline), postoperatively just after intensive care unit admission, 12 hours after surgery, and then once daily for 7 days.
Time frame: 7 days after the procedure
Number of cases developed acute kidney injury as defined by KIDGO guidelines (serum creatinine ≥ 0.3 mg/dL from base line within 48 hours, or ≥1.5 fold within 7 days, or urine output <0.5 mL/kg/hour for six hours) in patients undergoing open heart surgery.
Time frame: 7 days after the procedure
The length of stay in an Intensive Care Unit (ICU) is defined as the duration a patient spends in the ICU, typically measured from the time of admission to the ICU until the time of discharge.
Time frame: 7 days after the procedure
Length of hospital stay will be measured from admission till discharge from hospital.
Time frame: 7 days after the procedure
Need for renal replacement therapy will be recorded.
Time frame: 7 days after the procedure
Number of patients developed chronic kidney disease will be recorded.
Time frame: 7 days after the procedure
Mortality rate will be recorded.
Contact information is provided by the study sponsor or research team.
Tanta University
Other
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View the official ClinicalTrials.gov record (opens in a new tab)This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.
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