Using the Modified Clavien Grading System to Classify Complications of Percutaneous Nephrolithotomy

Purpose: A modified Clavien classification system has been proposed to grade perioperative complications. We share our experience in grading the complications of percutaneous nephrolithotomy (PNL), according to this new classification. Methods: A total of 809 PNLs performed between 2010 and 2014 were reviewed retrospectively. The modified Clavien classification system, which classifies the perioperative complications into 5 grades, was applied. Grade wise comparison of complications between the patients with simple and complex calculi was done. We also carried out a univariate analysis of different predictors of complications after surgery. Results: A total of 253 perioperative complications were observed in 237 (29.29%) patients. Most complications were related to bleeding and urinary leakage. Patients with complex calculi had significantly more number of complications across all Clavien groups. In a univariate analysis, positive preoperative urine culture and multiple access for stone clearance were identified to be the independent predictors of complications. Conclusion: The modified Clavien system is a simplistic grading system for classification of postoperative complications. However, it suffers from various shortcomings. Therefore, till the proposition of a more comprehensive classification system, the modified Clavien system is useful for reporting the complications and short-term outcomes of PNL.

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The effect of the American Society of Anesthesiology classification scores on complications associated with percutaneous nephrolithotomy

Archivio Italiano di Urologia e Andrologia ◽

10.4081/aiua.2018.2.112 ◽

2018 ◽

Vol 90 (2) ◽

pp. 112 ◽

Cited By ~ 2

Author(s):

Erdem Kisa ◽

Cem Yücel ◽

Salih Budak ◽

Murat Ucar ◽

Mehmet Zeynel Keskin ◽

...

Keyword(s):

Percutaneous Nephrolithotomy ◽

Classification System ◽

The Elderly ◽

Risk Scores ◽

Complication Rates ◽

Clavien Classification ◽

Number Of Patients ◽

Significant Difference ◽

Clavien Classification System ◽

American Society

Objectives: We aimed to evaluate the effect of American Society of Anesthesiology (ASA) classification scoring and age on complications and surgical outcomes during and after percutaneous nephrolithotomy (PCNL) operation. Material and methods: The records of 263 patients, above the age of 18 years, that underwent PCNL surgery between October 2014 and May 2017 were evaluated retrospectively. The patients were divided into three groups based on their ASA risk scores (ASA 1, 2, 3) and into two groups based on their age (younger and older than 65 years). Postoperative complications were assessed according to the ASA groups and age and according to the Clavien classification system. Results: The number of patients in the ASA 1, 2, and 3 groups were 97 (36.8%), 131 (49.8%) and 35 (13.3%), respectively. Four patients in ASA4 were not included in the study. There was no significant difference in ASA 1, 2, 3 groups in terms of changes in Hgb values, mean duration of operation, and mean hospital stay. When ASA1 was compared to ASA3 and ASA2 was compared to ASA3, there was no significant difference in the incidence of all complication rates. There were 159 (60.4%) patients in the young group and 104 (39.5%) patients in the elderly group. Postoperative PCNL complications of these 2 groups were compared according to Clavien classification system and no significant difference was found in incidence of complications.Conclusions: We believe that PCNL operation can be performed effectively and safely in both ASA3 patients and patients above the age of 65 years.

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Perioperative Complications of Transurethral Resection of the Prostate According to Clavien Classification System = المضاعفات المحيطة بعملية استئصال البروستات عبر الأحليل حسب تصنيف كالفين

Jordan Medical Journal ◽

10.12816/0025897 ◽

2015 ◽

Vol 49 (2) ◽

pp. 75-83

Author(s):

Mossab Al Refaie ◽

Adnan Ahmad ◽

Rateb Daowd

Keyword(s):

Transurethral Resection ◽

Classification System ◽

Perioperative Complications ◽

Clavien Classification ◽

Clavien Classification System

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Faculty Opinions recommendation of Classification of percutaneous nephrolithotomy complications using the modified clavien grading system: looking for a standard.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.4157956.3944054 ◽

2010 ◽

Author(s):

Gunnar Wendt-Nordahl ◽

Felix Wezel

Keyword(s):

Percutaneous Nephrolithotomy ◽

Grading System

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UV Spectral Classification of B Stars

Symposium - International Astronomical Union ◽

10.1017/s0074180900079092 ◽

1985 ◽

Vol 111 ◽

pp. 411-413

Author(s):

Janet Rountree ◽

George Sonneborn ◽

Robert J. Panek

Keyword(s):

Classification System ◽

Classification Criteria ◽

High Dispersion ◽

Spectral Classification ◽

Early Type ◽

B Stars ◽

Dimensional Classification ◽

Early Type Stars ◽

Comprehensive Classification

Previous studies of ultraviolet spectral classification have been insufficient to establish a comprehensive classification system for ultraviolet spectra of early-type stars because of inadequate spectral resolution. We have initiated a new study of ultraviolet spectral classification of B stars using high-dispersion IUE archival data. High-dispersion SWP spectra of MK standards and other B stars are retrieved from the IUE archives and numerically degraded to a uniform resolution of 0.25 or 0.50 Å. The spectra (in the form of plots or photowrites) are then visually examined with the aim of setting up a two-dimensional classification matrix. We follow the method used to create the MK classification system for visual spectra. The purpose of this work is to examine the applicability of the MK system (and in particular, the set of standard stars) in the ultraviolet, and to establish classification criteria in this spectral region.

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