Background:There is limited evidence to clarify the specific relationship between preoperative estimated glomerular filtration rate (preop-eGFR) and postoperative thirty-day mortality in Asian patients undergoing non-cardiac and non-neuron surgery. We aimed to investigate details of this relationship.Methods:We reanalyzed a retrospective analysis of the clinical records of 90,785 surgical patients at the Singapore General Hospital from January 1, 2012 to October 31, 2016. The main outcome was postoperative thirty-day mortality.Results :The average age of these recruited patients was 53.96 ± 16.88 years, of which approximately 51.64% were female. The mean of preop-eGFR distribution was 84.45 ± 38.56mL/min/1.73m2. Multivariate logistic regression analysis indicated that preop-eGFR was independently associated with thirty-day mortality (adjusted odds ratio: 0.992; 95% confidence interval [CI]: 0.990-0.995; P < 0.001). A U-shaped relationship was detected between preop-eGFR and thirty-day mortality with an inflection point of 98.688(P for log likelihood ratio test <0.001). The effect sizes and confidence intervals on the right and left sides of the inflection point were 1.013 (1.007 to 1.019) [P < 0.0001] and 0.984 (0.981 to 0.987) [P < 0.0001], respectively. Preoperative comorbidities such as congestive heart failure (CHF), type 1 diabetes, ischemic heart disease (IHD),and anemia were associated with the odds ratio of preop-eGFR to thirty-day mortality (interaction P < 0.05).Discussion:The relationship between preop-eGFR and thirty-day mortality is U-shaped. The recommended preop-eGFR at which the rate of the thirty-day mortality was lowest was 98.688mL/min/1.73m2.
Background:There is limited evidence to clarify the specific relationship between preoperative estimated glomerular filtration rate (preop-eGFR) and postoperative thirty-day mortality in Asian patients undergoing non-cardiac and non-neuron surgery. We aimed to investigate details of this relationship.Methods:We reanalyzed a retrospective analysis of the clinical records of 90,785 surgical patients at the Singapore General Hospital from January 1, 2012 to October 31, 2016. The main outcome was postoperative thirty-day mortality.Results:The average age of these recruited patients was 53.96 ± 16.88 years, of which approximately 51.64% were female. The mean of preop-eGFR distribution was 84.45 ± 38.56mL/min/1.73m2. Multivariate logistic regression analysis indicated that preop-eGFR was independently associated with thirty-day mortality (adjusted odds ratio: 0.992; 95% confidence interval [CI]: 0.990-0.995; P < 0.001). A U-shaped relationship was detected between preop-eGFR and thirty-day mortality with an inflection point of 98.688(P for log likelihood ratio test <0.001). The effect sizes and confidence intervals on the right and left sides of the inflection point were 1.013 (1.007 to 1.019) [P < 0.0001] and 0.984 (0.981 to 0.987) [P < 0.0001], respectively. Preoperative comorbidities such as congestive heart failure (CHF), type 1 diabetes, ischemic heart disease (IHD),and anemia were associated with the odds ratio of preop-eGFR to thirty-day mortality (interaction P < 0.05).Discussion:The relationship between preop-eGFR and thirty-day mortality is U-shaped. The recommended preop-eGFR at which the rate of the thirty-day mortality was lowest was 98.688mL/min/1.73m2.
Introduction: There is limited evidence to clarify the specific relationship between preoperative estimated glomerular filtration rate (preop-eGFR) and postoperative thirty-day mortality in patients undergoing non-cardiac surgery. We aimed to investigate details of this relationship.Methods: We reanalyzed a retrospective analysis of the clinical records of 90,785 surgical patients at the Singapore General Hospital from January 1, 2012 to October 31, 2016. The main outcome was postoperative thirty-day mortality.Results: The average age of these recruited patients was 53.96 ± 16.88 years, of which approximately 51.64% were female. The mean of preop-eGFR distribution was 84.45 ± 38.56 mL/min/1.73 m2. Multivariate logistic regression analysis indicated that preop-eGFR was independently associated with thirty-day mortality (adjusted odds ratio: 0.992; 95% confidence interval [CI]: 0.990–0.995; P < 0.001). A U-shaped relationship was detected between preop-eGFR and thirty-day mortality with an inflection point of 98.688(P for log likelihood ratio test < 0.001). The effect sizes and confidence intervals on the right and left sides of the inflection point were 1.013 (1.007 to 1.019) [P < 0.0001] and 0.984 (0.981 to 0.987) [P < 0.0001], respectively. Preoperative comorbidities such as congestive heart failure (CHF), type 1 diabetes, ischemic heart disease (IHD),and anemia were associated with the odds ratio of preop-eGFR to thirty-day mortality (interaction P < 0.05).Discussion: The relationship between preop-eGFR and thirty-day mortality is U-shaped. The recommended preop-eGFR at which the rate of the thirty-day mortality was lowest was 98.688 mL/min/1.73 m2.
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