Postoperative pain and fatigue after laparoscopic or conventional colorectal resections

Schwenk, W.; Böhm, Bartholomäus; Müller, Jochen

doi:10.1007/s004649900799

Cited by 211 publications

(130 citation statements)

References 34 publications

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“…In the applied literature, typically continuous ordinal responses are analysed using model (1) on a discretized version of the VA S responses (for example Kelly, 2001, Jensen, Chen, andBrugger, 2003), or simply by treating the VA S measurements as continuous responses in a normal regression model (for example Schwenk, 1998). Both of these approaches are less than satisfactory: discretizing the response involves loss of information, and use of the normal regression model has obvious distributional shortcomings.…”

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confidence: 99%

Ordinal Regression Models for Continuous Scales

Manuguerra¹,

Heller²

2010

The International Journal of Biostatistics

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Ordinal regression analysis is a convenient tool for analyzing ordinal response variables in the presence of covariates. In this paper we extend this methodology to the case of continuous self-rating scales such as the Visual Analog Scale (VAS) used in pain assessment, or the Linear Analog Self-Assessment (LASA) scales in quality of life studies. These scales measure subjects' perception of an intangible quantity, and cannot be handled as ratio variables because of their inherent nonlinearity. We express the likelihood in terms of a function connecting the scale with an underlying continuous latent variable and approximate this function either parametrically or non-parametrically. Then a general semi-parametric regression framework for continuous scales is developed. Two data sets have been analyzed to compare our method to the standard discrete ordinal regression model, and the parametric to the non-parametric versions of the model. The first data set uses VAS data from a study on the efficacy of low-level laser therapy in the treatment of chronic neck pain; the second comes from a study on chemotherapy treatments in advanced breast cancer and looks at the impact of different drugs on patients' quality of life. The continuous formulation of the ordinal regression model has the advantage of no loss of precision due to categorization of the scores and no arbitrary choice of the number and boundaries of categories. The semi-parametric form of the model makes it a flexible method for analysis of continuous ordinal scales.

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confidence: 99%

Ordinal Regression Models for Continuous Scales

Manuguerra¹,

Heller²

2010

The International Journal of Biostatistics

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“…4,5 Early randomized controlled trials suggest that the shortterm outcomes of laparoscopic colorectal surgeries are probably marginally better than the traditional open approach. However, after laparoscopic technique had been widely accepted, later reports 6,7 demonstrated clear superiority of short-term outcome for the laparoscopic approach, including a reduction in postoperative ileus, less postoperative pain and a concomitant reduction in the need for analgesics, earlier tolerance of diet, shortened hospital stay, quicker return to premorbid functional activity, less wound-related morbidity, improved cosmetic results, and a possible reduction in adhesion formation.…”

Section: Short-term Outcomementioning

confidence: 99%

Surgical Treatment for Colorectal Cancer

Hiranyakas

2011

International Surgery

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The rapid in development of surgical technology has had a major effect in surgical treatment of colorectal cancer. Laparoscopic colon cancer surgery has been proven to provide better short-term clinical and oncologic outcomes. However this quickly accepted surgical approach is still performed by a minority of colorectal surgeons. The more technically challenging procedure of laparoscopic rectal cancer surgery is also on its way to demonstrating perhaps similar short-term benefits. This article reviews current evidences of both short-term and long-term outcomes of laparoscopic colorectal cancer surgery, including the overall costs comparison between laparoscopic surgery and conventional open surgery. In addition, different surgical techniques for laparoscopic colon and rectal cancer are compared. Also the relevant future challenge of colorectal cancer robotic surgery is reviewed.

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“…In addition, laparoscopic surgery has also been shown to be associated with less POFS, though less than following open surgery [10,18]. These evidences suggest that a POFS model, induced by a sufficient amount of gastrointestinal surgery, could be suitable.…”

Section: Introductionmentioning

confidence: 99%

Establishment and assessments of a new model for the postoperative fatigue syndrome by major small intestinal resection in rats

Zhang¹,

Chen²,

Dong³

et al. 2011

Scandinavian Journal of Gastroenterology

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. (2011). Establishment and assessments of a new model for the postoperative fatigue syndrome by major small intestinal resection in rats. Scandinavian Journal of Gastroenterology, 46(11), 1302-1309. DOI: 10.3109/00365521.2011 General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal Morris water maze test were used to evaluate the degree of POFS. Serum albumin, transferrin, prealbumin and fibronectin were measured to assess the nutritional status, and superoxide dismutase (SOD) and malondealdehyde (MDA) were also measured. Results:As compared to the other 3 groups, the 70% small intestinal resection group showed the worst general state of health, decreased strength of the tail suspension test and the score of Morris water maze test (P<0.05) after operation.All rats suffering small intestinal resection demonstrated a certain degree of malnutrition and behaviour of depression, and the 70% resection group had the lowest levels of transferrin, prealbumin and fibronectin as compared to the other 3 groups (P<0.05), as well as decreased SOD and increased MDA in serum (P<0.05). Conclusions:Resection of 70% of the small intestine resulted in typical characteristics of POFS. As this procedure is simple, stable and easily reproducible, it may serve as a model for research on POFS.

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Postoperative pain and fatigue after laparoscopic or conventional colorectal resections

Cited by 211 publications

References 34 publications

Ordinal Regression Models for Continuous Scales

Ordinal Regression Models for Continuous Scales

Surgical Treatment for Colorectal Cancer

Establishment and assessments of a new model for the postoperative fatigue syndrome by major small intestinal resection in rats

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