Cerebrovascular Disease and Chronic Obstructive Pulmonary Disease Increase Risk of Complications with Robotic Partial Nephrectomy

Tyler M. Bauman, Aaron M. Potretzke, Joel M. Vetter, Sam B. Bhayani, Robert Sherburne Figenshau

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


Objective: To identify specific comorbidities within the Charlson Comorbidity Index (CCI) that are associated with increased complication rates after robot-assisted partial nephrectomy (RAPN). Patients and Methods: After institutional review board approval, a consecutive series of 641 patients undergoing RAPN were retrospectively identified. Perioperative complications were defined and classified using the Clavien grading system. Fisher's exact test or chi-square test was performed to evaluate the association of individual comorbidities with perioperative complications. Logistic regression was used for multivariable analysis to adjust for other non-CCI comorbidities and tumor-specific and patient-specific characteristics. Results: Of the 641 patients undergoing RAPN, complications occurred in 67 patients (10.5%), including 10 (14.9%), 28 (41.8%), 20 (29.9%), 5 (7.5%), and 4 (6.0%) patients with Clavien grade 1, 2, 3a, 3b, and 4 complications, respectively. Cerebrovascular disease [odds ratio 3.01 (95% confidence interval [CI] 1.10, 8.26) p = 0.03] and chronic obstructive pulmonary disease [COPD; 3.12 (1.24, 7.89) p = 0.02] predicted complications in multivariable analysis of clinicopathologic characteristics, including all CCI and non-CCI comorbidities. In additional modeling with only CCI comorbidities, similar results were observed, with cerebrovascular disease [2.93 (1.04, 7.56) p = 0.04] and COPD [2.69 (1.04, 6.28) p = 0.04] as the only two significant variables. No other variables reached statistical significance in either model, including nephrometry score or estimated blood loss (p > 0.50 for both). COPD predicted major complications (Clavien grade 3 or 4) in multivariable analysis [3.19 (1.07, 9.48) p = 0.04]. Conclusions: Cerebrovascular disease and COPD predict perioperative RAPN complications after RAPN. Identification of patients with these comorbidities preoperatively may afford improved counseling and risk stratification.

Original languageEnglish
Pages (from-to)293-299
Number of pages7
JournalJournal of Endourology
Issue number3
StatePublished - Mar 1 2016


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