Usefulness of the diameter–axial–polar nephrometry score for predicting perioperative parameters in robotic partial nephrectomy

Young Eun Yoon, Kyung Hwa Choi, Kwang Suk Lee, Kwang Hyun Kim, Koon Ho Rha, Young Deuk Choi, Woong Kyu Han

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Purpose: The present study aimed to verify the association between diameter–axial–polar (DAP) nephrometry and surgical outcomes, postoperative renal function, and perioperative complications in patients undergoing robotic partial nephrectomy (RPN). Methods: Diameter–axial–polar nephrometry was assessed using computed tomography or magnetic resonance imaging on 158 patients who received RPN between July 2007 and February 2013. Demographic data, surgical data, and perioperative complications were recorded, and percent change between the preoperative and last estimated glomerular filtration rate (eGFR) was determined. Linear regression analysis was conducted to assess the relationship between the DAP sum score and warm ischemia time (WIT), estimated blood loss (EBL), and percent decrease in eGFR. Multivariable linear regression analysis was conducted to determine the relationship between each DAP scoring parameter and surgical outcomes. Results: The median patient age was 50.5 years and median DAP sum score was 6. On linear regression, the DAP sum score was associated with WIT and EBL. On multivariable regression, all DAP parameters were associated with WIT, but the polar distance was not associated with EBL. Patients with a higher DAP sum score showed greater decrease in eGFR after RPN. Patients with a DAP sum score of 6 or higher had a higher risk of major complications than those with a DAP sum score below 6. Conclusions: Diameter–axial–polar nephrometry predicted WIT and EBL in patients who underwent RPN. It was also associated with the decrease in eGFR and rate of major perioperative complications, and thus can be useful for surgical planning or patient counseling before RPN.

Original languageEnglish
Pages (from-to)841-845
Number of pages5
JournalWorld Journal of Urology
Volume33
Issue number6
DOIs
Publication statusPublished - 2015 Jun 22

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Robotics
Nephrectomy
Warm Ischemia
Glomerular Filtration Rate
Linear Models
Regression Analysis
Counseling
Tomography
Magnetic Resonance Imaging
Demography
Kidney

All Science Journal Classification (ASJC) codes

  • Urology

Cite this

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title = "Usefulness of the diameter–axial–polar nephrometry score for predicting perioperative parameters in robotic partial nephrectomy",
abstract = "Purpose: The present study aimed to verify the association between diameter–axial–polar (DAP) nephrometry and surgical outcomes, postoperative renal function, and perioperative complications in patients undergoing robotic partial nephrectomy (RPN). Methods: Diameter–axial–polar nephrometry was assessed using computed tomography or magnetic resonance imaging on 158 patients who received RPN between July 2007 and February 2013. Demographic data, surgical data, and perioperative complications were recorded, and percent change between the preoperative and last estimated glomerular filtration rate (eGFR) was determined. Linear regression analysis was conducted to assess the relationship between the DAP sum score and warm ischemia time (WIT), estimated blood loss (EBL), and percent decrease in eGFR. Multivariable linear regression analysis was conducted to determine the relationship between each DAP scoring parameter and surgical outcomes. Results: The median patient age was 50.5 years and median DAP sum score was 6. On linear regression, the DAP sum score was associated with WIT and EBL. On multivariable regression, all DAP parameters were associated with WIT, but the polar distance was not associated with EBL. Patients with a higher DAP sum score showed greater decrease in eGFR after RPN. Patients with a DAP sum score of 6 or higher had a higher risk of major complications than those with a DAP sum score below 6. Conclusions: Diameter–axial–polar nephrometry predicted WIT and EBL in patients who underwent RPN. It was also associated with the decrease in eGFR and rate of major perioperative complications, and thus can be useful for surgical planning or patient counseling before RPN.",
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Usefulness of the diameter–axial–polar nephrometry score for predicting perioperative parameters in robotic partial nephrectomy. / Yoon, Young Eun; Choi, Kyung Hwa; Lee, Kwang Suk; Kim, Kwang Hyun; Rha, Koon Ho; Choi, Young Deuk; Han, Woong Kyu.

In: World Journal of Urology, Vol. 33, No. 6, 22.06.2015, p. 841-845.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Usefulness of the diameter–axial–polar nephrometry score for predicting perioperative parameters in robotic partial nephrectomy

AU - Yoon, Young Eun

AU - Choi, Kyung Hwa

AU - Lee, Kwang Suk

AU - Kim, Kwang Hyun

AU - Rha, Koon Ho

AU - Choi, Young Deuk

AU - Han, Woong Kyu

PY - 2015/6/22

Y1 - 2015/6/22

N2 - Purpose: The present study aimed to verify the association between diameter–axial–polar (DAP) nephrometry and surgical outcomes, postoperative renal function, and perioperative complications in patients undergoing robotic partial nephrectomy (RPN). Methods: Diameter–axial–polar nephrometry was assessed using computed tomography or magnetic resonance imaging on 158 patients who received RPN between July 2007 and February 2013. Demographic data, surgical data, and perioperative complications were recorded, and percent change between the preoperative and last estimated glomerular filtration rate (eGFR) was determined. Linear regression analysis was conducted to assess the relationship between the DAP sum score and warm ischemia time (WIT), estimated blood loss (EBL), and percent decrease in eGFR. Multivariable linear regression analysis was conducted to determine the relationship between each DAP scoring parameter and surgical outcomes. Results: The median patient age was 50.5 years and median DAP sum score was 6. On linear regression, the DAP sum score was associated with WIT and EBL. On multivariable regression, all DAP parameters were associated with WIT, but the polar distance was not associated with EBL. Patients with a higher DAP sum score showed greater decrease in eGFR after RPN. Patients with a DAP sum score of 6 or higher had a higher risk of major complications than those with a DAP sum score below 6. Conclusions: Diameter–axial–polar nephrometry predicted WIT and EBL in patients who underwent RPN. It was also associated with the decrease in eGFR and rate of major perioperative complications, and thus can be useful for surgical planning or patient counseling before RPN.

AB - Purpose: The present study aimed to verify the association between diameter–axial–polar (DAP) nephrometry and surgical outcomes, postoperative renal function, and perioperative complications in patients undergoing robotic partial nephrectomy (RPN). Methods: Diameter–axial–polar nephrometry was assessed using computed tomography or magnetic resonance imaging on 158 patients who received RPN between July 2007 and February 2013. Demographic data, surgical data, and perioperative complications were recorded, and percent change between the preoperative and last estimated glomerular filtration rate (eGFR) was determined. Linear regression analysis was conducted to assess the relationship between the DAP sum score and warm ischemia time (WIT), estimated blood loss (EBL), and percent decrease in eGFR. Multivariable linear regression analysis was conducted to determine the relationship between each DAP scoring parameter and surgical outcomes. Results: The median patient age was 50.5 years and median DAP sum score was 6. On linear regression, the DAP sum score was associated with WIT and EBL. On multivariable regression, all DAP parameters were associated with WIT, but the polar distance was not associated with EBL. Patients with a higher DAP sum score showed greater decrease in eGFR after RPN. Patients with a DAP sum score of 6 or higher had a higher risk of major complications than those with a DAP sum score below 6. Conclusions: Diameter–axial–polar nephrometry predicted WIT and EBL in patients who underwent RPN. It was also associated with the decrease in eGFR and rate of major perioperative complications, and thus can be useful for surgical planning or patient counseling before RPN.

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