Predictive Factors for Postoperative Renal Function After Off-Clamp, Non-Renorrhaphy Partial Nephrectomy

Abstract Background: There is limited information on perioperative renal function during off-clamp, non-renorrhaphy open partial nephrectomy.Therefore, this study aimed to clarify the chronological postoperative changes in renal function after off-clamp, non-renorrhaphy open partial nephrectomy.Methods: Clinical records of 138 patients with renal tumors who underwent off-clamp, non-renorrhaphy open partial nephrectomy at our institution were reviewed. Off-clamp, non-renorrhaphy partial nephrectomy were performed using a soft coagulation system. Perioperativeestimated glomerular filtration rate (eGFR) preservation was calculated, and predictors were identified using multivariate regression analysis at 5 days, 1 month, and 3 months after surgery.Results: The median operation time was 122 minutes, and the median volume of estimated blood loss was155 mL. The mean eGFR preservation at 5 days, 1 month, and 3 months after surgery was 95.3%, 91.0%, and 90.7%, respectively. Multivariate regression analysis revealed that estimated blood loss was an independent predictor of perioperative eGFR preservation at 5 days and 1 month after surgery, while age was an independent predictor of perioperative eGFR preservation at 3months after surgery.Conclusion: Chronological changes in renal function after off-clamp, non-renorrhaphy open partial nephrectomy have been reported.Ourresults could bea reference in the era of robot-assisted partial nephrectomy.

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Robotic partial nephrectomy for renal tumours in obese patients: Perioperative outcomes in a multi-institutional analysis

Canadian Urological Association Journal ◽

10.5489/cuaj.3197 ◽

2015 ◽

Vol 9 (11-12) ◽

pp. 859 ◽

Cited By ~ 12

Author(s):

Newaj Abdullah ◽

Deepansh Dalela ◽

Ravi Barod ◽

Jeff Larson ◽

Michael Johnson ◽

...

Keyword(s):

Regression Analysis ◽

Blood Loss ◽

Partial Nephrectomy ◽

Operative Time ◽

Independent Predictor ◽

Operating Time ◽

Perioperative Outcomes ◽

Robotic Partial Nephrectomy ◽

Obese Patients ◽

Estimated Blood Loss

Introduction: We sought to evaluate the association of obesity with surgical outcomes of robotic partial nephrectomy (RPN) using a large, multicentre database. Methods: We identified 1836 patients who underwent RPN from five academic centres from 2006-2014. A total of 806 patients were obese (body mass index [BMI] ≥30 kg/m2). Patient characteristics and outcomes were compared between obese and non-obese patients. Multivariable analysis was used to assess the association of obesity on RPN outcomes.Results: A total of 806 (44%) patients were obese with median BMI of 33.8kg/m2. Compared to non-obese patients, obese patients had greater median tumour size (2.9 vs. 2.5 cm, p<0.001), mean RENAL nephrometry score (7.3 vs. 7.1, p = 0.04), median operating time (176 vs. 165 min, p=0.002), and median estimated blood loss (EBL, 150 vs. 100 ml, p=0.002), but no difference in complications. Obesity was not an independent predictor of operative time or EBL on regression analysis. Among obese patients, males had a greater EBL (150 vs. 100 ml, p<0.001), operative time (180 vs. 166 min, p<0.001) and warm ischemia time (WIT, 20 vs. 18, p=0.001) and male sex was an independent predictor of these outcomes on regression analysis.Conclusion: In this large, multicentre study on RPN, obesity was not associated with increased complications and was not an independent predictor of operating time or blood loss. However, in obese patients, male gender was an independent predictor of greater EBL, operative time, and WIT. Our results indicate that obesity alone should not preclude consideration for RPN.

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Open Partial Nephrectomy with Zero Ischaemia Using a Supra 12th Rib Miniflank Incision: A Minimally Invasive Open Approach for Small Renal Masses

Advances in Urology ◽

10.1155/2021/5569254 ◽

2021 ◽

Vol 2021 ◽

pp. 1-5

Author(s):

Syed Ali Ehsanullah ◽

Abida Sultana ◽

Brian Kelly ◽

Charlotte Dunford ◽

Zaheer Shah

Keyword(s):

Renal Function ◽

Blood Loss ◽

Minimally Invasive ◽

Partial Nephrectomy ◽

Operative Time ◽

Tumour Size ◽

Open Approach ◽

Open Partial Nephrectomy ◽

Estimated Blood Loss ◽

The Mean

Introduction. To assess a minimally invasive open technique for partial nephrectomy with zero ischaemia time. Methods. A review was performed in a prospectively maintained database of a single surgeon series of all patients undergoing partial nephrectomy using a supra 12th rib miniflank incision with zero ischaemia. Data of seventy one patients who underwent a partial nephrectomy over an 82-month period were analyzed. Data analyzed included operative time, estimated blood loss, pre and postoperative renal function, complications, final pathological characteristics, and tumour size. Results. Seventy one partial nephrectomies were performed from February 2009 to October 2015. None were converted to radical nephrectomy. Mean operative time was 72 minutes (range 30–250), and mean estimated blood loss was 608 mls (range 100–2500) with one patient receiving blood transfusion. The mean pre and postoperative haemoglobin levels were 144 and 112 g/l. The mean pre and postoperative creatinine levels were 82 and 103 Umol/L. There were 8 Clavian–Dindo Grade 2 complications and 1 major complication (Clavian IIIa). Histology confirmed 24 benign lesions and 47 malignant lesions, 46 cT1a lesions, 24 cT1b lesions, and 1 cT2 lesion. Median follow-up was 38 months with no local recurrence or progression of disease with 5 patients having a positive margin (7%). Conclusion. Our results demonstrate that a supra 12th miniflank incision open partial nephrectomy with zero ischaemic time for SRMs has satisfactory outcomes with preservation of renal function. A minimally invasive open partial nephrectomy remains an important option for units that cannot offer patients a laparoscopic or a robotic procedure.

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Association between R.E.N.A.L nephrometry score and perioperative outcomes following open partial nephrectomy under cold ischemia

Canadian Urological Association Journal ◽

10.5489/cuaj.1372 ◽

2014 ◽

Vol 8 (3-4) ◽

pp. 137

Author(s):

Dong Soo Park ◽

Jin Ho Hwang ◽

Moon Hyung Kang ◽

Jong Jin Oh

Keyword(s):

Blood Loss ◽

Partial Nephrectomy ◽

Perioperative Outcomes ◽

Renal Neoplasm ◽

Cold Ischemia ◽

Ischemic Time ◽

Open Partial Nephrectomy ◽

Cold Ischemic Time ◽

Nephrometry Score ◽

Estimated Blood Loss

Introduction: We investigate the clinical significance of the R.E.N.A.L. nephrometry score for renal neoplasm following open partial nephrectomy (PN) under cold ischemia.Methods: A retrospective analysis was conducted using clinical data of 98 consecutive patients with clear cell renal cell carcinoma who underwent open PN by a single surgeon from December 2000 to September 2012. Tumour complexity was stratified into 3 categories: low (4-6), moderate (7-9) and high (10-12) complexity. Perioperative outcomes, such as complications, cold ischemic time, estimated blood loss and renal function, were analyzed according to the complexity by NS. Complications were stratified using the Clavien-Dindo classification system.Results: Tumour complexity according to nephrometry score was assessed as low in 16 (16.3%), moderate in 48 (49.0%) and high in 34 (34.7%). The median cold ischemic time did not differ significantly among the 3 groups (36.0 minutes in low-, 40 minutes in moderate- and 43 minutes in the high-complexity group, p = 0.421). Total complications did not differ significantly (2 (2.0%) in low, 4 (4.1%) in moderate and 4 (4.1%) in high, p = 0.984). Each Grade 3 complication occurred in the moderate (urine leakage) and high groups (lymphocele). Postoperative renal functional outcomes were similar among the groups (p = 0.729). Only mean estimated blood loss was significantly different with nephrometry score (p = 0.049).Conclusions: The nephrometry score, as used in an open PN series under cold ischemia, was not significantly associated with perioperative outcomes (i.e., ischemia time, complications, renal functional preservation).

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Abstract 412: Obesity is an Independent Predictor Of Arterial Stiffness

Hypertension ◽

10.1161/hyp.62.suppl_1.a412 ◽

2013 ◽

Vol 62 (suppl_1) ◽

Author(s):

Mohan Thanikachalam ◽

Shasha Bai ◽

Vijayakumar Harivanzan ◽

Ragavendra R Baliga ◽

William T Abraham ◽

...

Keyword(s):

Blood Pressure ◽

Regression Analysis ◽

Arterial Stiffness ◽

Multivariate Regression ◽

Independent Predictor ◽

Density Lipoprotein ◽

Multivariate Regression Analysis ◽

Population Based ◽

Cross Sectional Survey ◽

Cross Sectional

Background Arterial stiffness assessed by carotid-femoral pulse wave velocity (PWV) is an independent predictor of cardiovascular morbidity and mortality. We aimed to investigate how various measures of obesity affect arterial stiffness. Methods We conducted a population-based cross-sectional survey in 8,042 South Indians above the age of 20 years. Following completion of a detailed medical history questionnaire, all participants underwent haemodynamic screening including brachial and central blood pressure, and PWV measurements using a high-fidelity applanation tonometry. The study included anthropometric measurements and fasting blood for total cholesterol (TC), triglyceride (TG), high density lipoprotein (HDL), low density lipoprotein (LDL) and blood glucose (BG) levels. After the exclusion of people with previous history of diabetes, hypertension and dyslipidemia on drug therapy, 5,841 subjects (mean age 41.6 years; 58% women) constituted the study sample Results In an univariate analysis, PWV correlated positively with age, mean blood pressure (MAP), heart rate (HR), body mass index (BMI), waist circumference (WC), waist to hip ratio (WHR), body fat percent (BF%), TC, TG, LDL and BG levels (P <0.001) and negatively with HDL levels (P=0.005). In a multivariate regression analysis, majority of the PWV variability in the model was accounted for by MAP and age, (cumulative adjusted R2 change of 32.79% as compared to the total adjusted R2 change of 35.25%). However, BMI (β= 0.042; adjusted R2 change=2.83%; p<0.001) independently correlated with PWV and its contribution to the PWV variability was far more significant compared to LDL, BG and TG (cumulative adjusted R2 change=1.08%). Multivariate regression analysis using the WC, WHR, or BF% instead of the BMI continued to demonstrate a significant independent effect of obesity parameters on PWV. Conclusion: In a large a population-based cross-sectional survey the study demonstrates a positive, independent association between obesity parameters and increased arterial stiffness.

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The Self-Retaining Barbed Suture for Parenchymal Repair in Laparoscopic Partial Nephrectomy: A Systematic Review and Meta-Analysis

Surgical Innovation ◽

10.1177/1553350619856167 ◽

2019 ◽

Vol 26 (6) ◽

pp. 744-752

Author(s):

Hailun Zhan ◽

Chunping Huang ◽

Tengcheng Li ◽

Fei Yang ◽

Jiarong Cai ◽

...

Keyword(s):

Renal Function ◽

Blood Loss ◽

Hospital Stay ◽

Partial Nephrectomy ◽

Operative Time ◽

Meta Analysis ◽

Length Of Hospital Stay ◽

The Self ◽

Barbed Suture ◽

Estimated Blood Loss

Objectives. The warm ischemia time (WIT) is key to successful laparoscopic partial nephrectomy (LPN). The aim of this study was to perform a meta-analysis comparing the self-retaining barbed suture (SRBS) with a non-SRBS for parenchymal repair during LPN. Methods. A systematic search of PubMed, Scopus, and the Cochrane Library was performed up to March 2018. Inclusion criteria for this study were randomized controlled trials (RCTs) and observational comparative studies assessing the SRBS and non-SRBS for parenchymal repair during LPN. Outcomes of interest included WIT, complications, overall operative time, estimated blood loss, length of hospital stay, and change of renal function. Results. One RCT and 7 retrospective studies were identified, which included a total of 461 cases. Compared with the non-SRBS, use of the SRBS for parenchymal repair during LPN was associated with shorter WIT ( P < .00001), shorter overall operative time ( P < .00001), lower estimated blood loss ( P = .02), and better renal function preservation ( P = .001). There was no significant difference between the SRBS and non-SRBS with regard to complications ( P = .08) and length of hospital stay ( P = .25). Conclusions. The SRBS for parenchymal repair during LPN can significantly shorten the WIT and overall operative time, decrease blood loss, and preserve renal function.

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Polyethylene glycol-coated collagen patch (hemopatch®) in open partial nephrectomy

World Journal of Urology ◽

10.1007/s00345-021-03827-x ◽

2021 ◽

Author(s):

Michael Staehler ◽

S. Rodler ◽

M. Schott ◽

J. Casuscelli ◽

C. Stief ◽

...

Keyword(s):

Renal Function ◽

Polyethylene Glycol ◽

Blood Loss ◽

Partial Nephrectomy ◽

Low Complexity ◽

High Complexity ◽

Open Partial Nephrectomy ◽

Duration Of Surgery ◽

Coated Collagen

Abstract Purpose To describe the results of a polyethylene glycol-coated collagen patch, Hemopatch® on blood loss, surgical time and renal function in partial nephrectomy (PN) for renal cell carcinoma (RCC). Methods Out of a single surgeon cohort of n = 565 patients undergoing conventional open PN (CPN) between 01/2015 and 12/2017 at the University of Munich a consecutive subgroup (n = 42) was operated on using a polyethylene glycol-coated collagen-based sealant Hemopatch® (Baxter International Inc., Deerfield, IL, USA) (HPN). Results Median age was 65.2 years (range 12.7–95.2) with median follow-up of 9.43 months (0.03–49.15). Baseline renal function (CKD-EPI) was 78.56 ml/min/1.73 m2 (range 20.38–143.09) with a non-significant decline to 74.78 ml/min/1.73 m2 (range 3.75–167.74) at follow-up. In CPN 46% had low complexity, 33% moderate complexity and 20% high complexity lesions with 33% low, 40% moderate and 27% high complexity masses in HPN. Median tumor size was 4.3 cm (range 1–38 cm) in CPN with 4.8 cm (range 3.8–18.3 cm) with HPN, p = 0.293. Median blood loss and duration of surgery was significantly lower in the HPN group vs. CPN (146 ml ± 195 vs. 114 ml ± 159 ml; p = 0.021; 43 min ± 27 for HPN vs. 53 min ± 49; p = 0.035) with no difference in clamping time (12.6 min ± 8.6 for HPN vs. 12.0 min ± 9.5; p = 0.701). Conclusions Hemopatch® supported renoraphy shows promising results compared to standard renoraphy in PN. No side effects were seen. Further studies should evaluate the prevention of arterio-venous or urinary fistulas. In complex partial nephrectomies Hemopatch® supported renoraphy should be considered.

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Hyperbaric oxygen and mortality in burns with inhalation injury: a study of the National Burn Repository

Journal of Burn Care & Research ◽

10.1093/jbcr/irab105 ◽

2021 ◽

Author(s):

Rachel M Nygaard ◽

Frederick W Endorf

Keyword(s):

Regression Analysis ◽

Hyperbaric Oxygen ◽

Multivariate Regression ◽

Hospital Admissions ◽

Burn Injury ◽

Independent Predictor ◽

Multivariate Regression Analysis ◽

Inhalation Injury ◽

Outcome Variable ◽

Uninsured Patients

Abstract Introduction Mortality in burn injury is primarily influenced by three factors: age, percent burn (%TBSA), and presence of inhalation injury. Numerous modalities have been tried in an attempt to treat those patients with burns and inhalation injury, including the use of hyperbaric oxygen (HBO). The aim of our study was to find the national prevalence of HBO for burns with inhalation injury, and whether HBO influenced mortality in these often severely-injured patients. Methods This retrospective study used the National Burn Repository (NBR) to identify hospital admissions of patients with both cutaneous burn and inhalation injuries. After applying exclusion criteria, a total of 13,044 patients were identified. Variables included in the multivariate regression analysis included: age, sex, race, payer, mechanism of burn injury, TBSA group, total procedure number, mechanical ventilator days, and treatment with HBO. The main outcome variable was mortality. Results Of the 13,044 patients, 67 had HBO therapy. The HBO patients were older (mean age 51.7 years vs. 42.8 years, P<0.001), but had smaller burns and thus a similar Baux score (66.6 vs. 65.2, P= 0.661). The HBO patients had a higher mortality (29.9% vs. 17.5%, P= 0.01). On multivariate regression analysis, HBO was an independent predictor of mortality (OR= 2.484, P= 0.004). Other significant predictors of mortality included age, Black race, Medicaid or uninsured patients, and %TBSA. Conclusions The use of HBO for patients with burns and inhalation injury is uncommon in this database. It is unclear whether that reflects low prevalence or if individual centers do not all impute HBO into the NBR. For those patients in this database, HBO is an independent predictor of mortality. It can be difficult to determine the severity of inhalation injury in the NBR, so those patients receiving HBO could theoretically have more severe inhalation injury.

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517 Hyperbaric Oxygen and Mortality in Burns with Inhalation Injury: a Study of the National Burn Repository

Journal of Burn Care & Research ◽

10.1093/jbcr/irab032.168 ◽

2021 ◽

Vol 42 (Supplement_1) ◽

pp. S105-S105

Author(s):

Rachel M Nygaard ◽

Frederick W Endorf

Keyword(s):

Regression Analysis ◽

Hyperbaric Oxygen ◽

Multivariate Regression ◽

Hospital Admissions ◽

Burn Injury ◽

Independent Predictor ◽

Multivariate Regression Analysis ◽

Inhalation Injury ◽

Outcome Variable ◽

Uninsured Patients

Abstract Introduction Mortality in burn injury is primarily influenced by three factors: age, percent burn (%TBSA), and presence of inhalation injury. Numerous modalities have been tried in an attempt to treat those patients with burns and inhalation injury, including the use of hyperbaric oxygen (HBO). The aim of our study was to find the national prevalence of HBO for burns with inhalation injury, and whether HBO influenced mortality in these often severely injured patients. Methods This retrospective study used the National Burn Repository (NBR) to identify hospital admissions of patients with both cutaneous burns and inhalation injuries. After applying exclusion criteria, a total of 13,044 patients were identified. Variables included in the multivariate regression analysis included: age, sex, race, payer, mechanism of burn injury, TBSA group, total procedure number, mechanical ventilator days, and treatment with HBO. The main outcome variable was mortality. Results Of the 13,044 patients, 67 had HBO therapy. The HBO patients were older (mean age 51.7 years vs. 42.8 years, p< 0.001) but had smaller burns and thus a similar Baux score (66.6 vs. 65.2, p=0.661). The HBO patients had a higher mortality (29.9% vs. 17.5%, p= 0.01). On multivariate regression analysis, HBO was an independent predictor of mortality (OR= 2.484, p= 0.004). Other significant predictors of mortality included age, Black race, Medicaid or uninsured patients, and %TBSA. Conclusions The use of HBO for patients with burns and inhalation injury is uncommon in this database. It is unclear whether that reflects low prevalence or if individual centers do not all impute HBO into the NBR. For those patients in this database, HBO is an independent predictor of mortality. It can be difficult to determine the severity of inhalation injury in the NBR, so those patients receiving HBO could theoretically have more severe inhalation injury.

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Perioperative and Long-Term Outcomes of Robot-Assisted Partial Nephrectomy: A Systematic Review

The American Surgeon ◽

10.1177/0003134820948912 ◽

2020 ◽

pp. 000313482094891

Author(s):

Amber B. Tang ◽

Margherita Lamaina ◽

Christopher P. Childers ◽

Selene S. Mak ◽

Qiao Ruan ◽

...

Keyword(s):

Blood Loss ◽

Partial Nephrectomy ◽

Oncologic Outcomes ◽

Surgical Approaches ◽

Long Term Outcomes ◽

Robot Assisted ◽

Cancer Specific Survival ◽

Open Partial Nephrectomy ◽

Estimated Blood Loss

Background Adoption of the robotic surgical platform for small renal cancers has rapidly expanded, but its utility compared to other approaches has not been established. The objective of this review is to assess perioperative and long-term oncologic and functional outcomes of robot-assisted partial nephrectomy (RAPN) compared to laparoscopic partial nephrectomy (LPN) and open partial nephrectomy (OPN). Methods A search in PubMed, Embase, and Cochrane (2010-2019) was conducted. Of 3877 articles screened, 7 observational studies were included. Results RAPN was associated with 24-50 mL less intraoperative blood loss compared to LPN and 39-84 mL less than OPN. RAPN also demonstrated trends of other postoperative benefits, such as shorter length of stay and fewer major complications. Several studies reported better long-term functional kidney outcomes, but these findings were inconsistent. Recurrence and cancer-specific survival (CSS) were similar across groups. While RAPN had a 5-year CSS of 90.1%-97.9%, LPN and OPN had survival rates of 85.9%-86.9% and 88.5-96.3% respectively. Conclusions RAPN may be associated with a lower estimated blood loss and comparable long-term outcomes when compared to other surgical approaches. However, additional randomized or propensity matched studies are warranted to fully assess long-term functional kidney and oncologic outcomes.

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Comparison of open and robotic nephron sparing surgery: a single centre experience

Journal of Clinical Urology ◽

10.1177/2051415816668942 ◽

2016 ◽

Vol 10 (1) ◽

pp. 28-35

Author(s):

Clare R Jelley ◽

Kurukula ASH Kurukulaarachchi ◽

Luke Forster ◽

Harry Bardgett ◽

Rajindra Singh ◽

...

Keyword(s):

Blood Loss ◽

Learning Curve ◽

Hospital Stay ◽

Partial Nephrectomy ◽

Tumour Size ◽

High Volume ◽

Robotic Partial Nephrectomy ◽

Complication Rates ◽

Open Partial Nephrectomy ◽

Estimated Blood Loss

Objective: To compare robotic partial nephrectomy (RAPN) with open partial nephrectomy (OPN) to assess efficacy and impact of learning curve. Methods: From 2010 to 2015 159 patients had a partial nephrectomy (82 OPN and 77 RAPN). All data were collected prospectively. We compared the demographics, peri and postoperative outcomes. Results: Mean age was 60 years in both groups; 59% of patients were men. Tumour size was larger in the open group (34 mm vs 30 mm; P<0.08), but RENAL nephrometry scores greater than 6 were comparable (over 60%). Mean ischaemic time was longer in the RAPN group (18 vs 13 minutes; P<0.04) but complication rates were similar. The RAPN cohort had a reduced estimated blood loss (100 ml vs 300 ml; P<0.01) and shorter median hospital stay (2 vs 5 days; P<0.01). Only two patients in each group were margin positive. The RAPN cohort demonstrated reduced estimated blood loss and a trend towards more complex tumours with increasing learning curve. Conclusion: RAPN is superior to OPN in terms of reduced hospital stay and estimated blood loss without compromising oncological outcomes. This service can be delivered safely and effectively in a low to medium volume cancer centre; these results are similar to published figures from high volume international centres.

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