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Šalamun V, Riemma G, Pavec M, Laganà AS, Ban Frangež H. Risk of Reintervention or Postoperative Bleeding after Laparoscopy for Benign Gynecological Disease: A Clinical Prediction Model. Gynecol Obstet Invest 2023; 88:294-301. [PMID: 37604136 DOI: 10.1159/000533490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 08/04/2023] [Indexed: 08/23/2023]
Abstract
OBJECTIVE The objective of the study was to develop a clinically applicable prediction tool to early seek for postoperative major complications after laparoscopic surgery for benign pathologies. DESIGN Retrospective analysis of prospectively collected data was performed. SETTING The study was conducted at Tertiary Care University Hospital. PARTICIPANTS The participants of this study were reproductive-aged women undergoing laparoscopy for benign conditions. METHODS Anamnestic, intraoperative, and postoperative characteristics from January 2019 to December 2021 were retrospectively reviewed. Patients with postoperative complications (reintervention or postoperative bleeding) were matched in a 1:2 ratio with women with same surgical indications without complications. Cases and controls were matched for preoperative hemoglobin, hematocrit, weight, height, body mass index, age, and blood volume. A prediction model was created by inserting multiple independent modifying factors through logistic regression. The receiver operating characteristic (ROC) curve was used to evaluate the predictive accuracy of the model, and the Hosmer-Lemeshow (H-L) test was carried out to evaluate the goodness-of-fit, and a calibration curve was drawn to confirm the predictive performance. A nomogram was depicted to visualize the prediction model. RESULTS Thirty-nine complicated procedures were matched with 78 uncomplicated controls. According to the multivariate logistic regression analysis findings, the prediction model was developed using C-reactive protein (CRP), intraoperative blood loss, and 24 h postoperative urinary volume, therefore a nomogram was generated. The area under the ROC curve of the prediction model was 0.879, depicting good accuracy, the sensitivity was 60.00%, while specificity reached 93.59%. The H-L test (χ2 = 4.45, p = 0.931) and the calibration curve indicated a good goodness-of-fit and prediction stability. LIMITATIONS The retrospective design, moderate sensitivity, and study population limit the generalization of the findings, requiring additional research. CONCLUSIONS This prediction model based on CRP, intraoperative blood loss, and 24 h postoperative urinary volume might be a potentially useful tool for predicting reintervention and postoperative bleeding in patients undergoing planned gynecological laparoscopy.
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Affiliation(s)
- Vesna Šalamun
- Division of Gynaecology and Obstetrics, Department of Human Reproduction, University Medical Centre Ljubljana, Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Gaetano Riemma
- Obstetrics and Gynecology Unit, Department of Woman, Child and General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy,
| | - Manca Pavec
- Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Antonio Simone Laganà
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties (PROMISE), University of Palermo, Palermo, Italy
| | - Helena Ban Frangež
- Division of Gynaecology and Obstetrics, Department of Human Reproduction, University Medical Centre Ljubljana, Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
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Irani JL, Hedrick TL, Miller TE, Lee L, Steinhagen E, Shogan BD, Goldberg JE, Feingold DL, Lightner AL, Paquette IM. Clinical Practice Guidelines for Enhanced Recovery After Colon and Rectal Surgery From the American Society of Colon and Rectal Surgeons and the Society of American Gastrointestinal and Endoscopic Surgeons. Dis Colon Rectum 2023; 66:15-40. [PMID: 36515513 PMCID: PMC9746347 DOI: 10.1097/dcr.0000000000002650] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jennifer L. Irani
- Department of Surgery, Division of Colorectal Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Traci L. Hedrick
- Department of Surgery, University of Virginia Health System, Charlottesville, Virginia
| | - Timothy E. Miller
- Department of Anesthesiology, Duke University, Durham, North Carolina
| | - Lawrence Lee
- Department of Surgery, McGill University, Montreal, Quebec, Canada
| | - Emily Steinhagen
- Department of Surgery, University Hospital Cleveland Medical Center, Cleveland, Ohio
| | - Benjamin D. Shogan
- Department of Surgery, University of Chicago Pritzker School of Medicine, Chicago, Illinois
| | - Joel E. Goldberg
- Department of Surgery, Division of Colorectal Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Daniel L. Feingold
- Department of Surgery, Section of Colorectal Surgery, Rutgers University, New Brunswick, New Jersey
| | - Amy L. Lightner
- Department of Colorectal Surgery, Cleveland Clinic Foundation, Cleveland Clinic
| | - Ian M. Paquette
- Division of Colon and Rectal Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio
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Irani JL, Hedrick TL, Miller TE, Lee L, Steinhagen E, Shogan BD, Goldberg JE, Feingold DL, Lightner AL, Paquette IM. Clinical practice guidelines for enhanced recovery after colon and rectal surgery from the American Society of Colon and Rectal Surgeons and the Society of American Gastrointestinal and Endoscopic Surgeons. Surg Endosc 2023; 37:5-30. [PMID: 36515747 PMCID: PMC9839829 DOI: 10.1007/s00464-022-09758-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/04/2022] [Indexed: 12/15/2022]
Abstract
The American Society of Colon and Rectal Surgeons (ASCRS) and the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES) are dedicated to ensuring high-quality innovative patient care for surgical patients by advancing the science, prevention, and management of disorders and diseases of the colon, rectum, and anus as well as minimally invasive surgery. The ASCRS and SAGES society members involved in the creation of these guidelines were chosen because they have demonstrated expertise in the specialty of colon and rectal surgery and enhanced recovery. This consensus document was created to lead international efforts in defining quality care for conditions related to the colon, rectum, and anus and develop clinical practice guidelines based on the best available evidence. While not proscriptive, these guidelines provide information on which decisions can be made and do not dictate a specific form of treatment. These guidelines are intended for the use of all practitioners, healthcare workers, and patients who desire information about the management of the conditions addressed by the topics covered in these guidelines. These guidelines should not be deemed inclusive of all proper methods of care nor exclusive of methods of care reasonably directed toward obtaining the same results. The ultimate judgment regarding the propriety of any specific procedure must be made by the physician in light of all the circumstances presented by the individual patient. This clinical practice guideline represents a collaborative effort between the American Society of Colon and Rectal Surgeons (ASCRS) and the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES) and was approved by both societies.
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Affiliation(s)
- Jennifer L Irani
- Department of Surgery, Division of Colorectal Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Traci L Hedrick
- Department of Surgery, University of Virginia Health System, Charlottesville, VA, USA
| | - Timothy E Miller
- Duke University Medical Center Library, Duke University School of Medicine, Durham, NC, USA
| | - Lawrence Lee
- Department of Surgery, McGill University, Montreal, QC, Canada
| | - Emily Steinhagen
- Department of Surgery, University Hospital Cleveland Medical Center, Cleveland, OH, USA
| | - Benjamin D Shogan
- Department of Surgery, University of Chicago Pritzker School of Medicine, Chicago, IL, USA
| | - Joel E Goldberg
- Department of Surgery, Division of Colorectal Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Daniel L Feingold
- Section of Colorectal Surgery, Rutgers University, New Brunswick, NJ, USA
| | - Amy L Lightner
- Department of Colorectal Surgery, Cleveland Clinic Foundation, Cleveland Clinic, Cleveland, USA
| | - Ian M Paquette
- Division of Colon and Rectal Surgery, University of Cincinnati College of Medicine Surgery (Colon and Rectal), 222 Piedmont #7000, Cincinnati, OH, 45219, USA.
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Greenberg AL, Kelly YM, McKay RE, Varma MG, Sarin A. Risk factors and outcomes associated with postoperative ileus following ileostomy formation: a retrospective study. Perioper Med (Lond) 2021; 10:55. [PMID: 34895339 PMCID: PMC8667388 DOI: 10.1186/s13741-021-00226-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 10/16/2021] [Indexed: 02/06/2023] Open
Abstract
Background Postoperative ileus (POI) is associated with increased patient discomfort, length of stay (LOS), and healthcare cost. There is a paucity of literature examining POI in patients who have an ileostomy formed at the time of surgery. We aimed to identify risk factors for and outcomes associated with POI following ileostomy formation. Methods We included 261 consecutive non-emergent cases that included formation of an ileostomy by a board-certified colorectal surgeon at our institution from July 1, 2015, to June 30, 2020. Demographic, clinical, and intraoperative factors associated with increased odds of POI were evaluated. Post-procedure LOS, hospitalization cost, and re-admissions between patients with and without POI were compared. Results Out of 261 cases, 85 (32.6%) were associated with POI. Patients with POI had significantly higher body mass index (BMI) than those without POI (26.6 kg/m2 vs. 24.8kg/m2; p = 0.01). Intraoperatively, patients with POI had significantly longer procedure duration than those without POI (313 min vs. 279 min; p = 0.02). Patients with POI had a significantly higher net fluid balance at postoperative day (POD) 2 than those without POI (+ 2.65 L vs. + 1.80 L; p = 0.004), with POD2 fluid balance greater than + 807 mL (determined as the maximum Youden index for sensitivity over 80%) associated with a higher rate of POI (p = 0.006). This difference remained significant when adjusted for age, gender, BMI, pre-operative opioid use, procedure duration, and operative approach (p = 0.01). Patients with POI had significantly longer LOS (11.40 days vs. 5.12 days; p < 0.001) and direct cost of hospitalization ($38K vs. $22K; p < 0.001). Conclusions Minimizing fluid overload, particularly in the first 48 h after surgery, may be a strategy to reduce POI in patients undergoing ileostomy formation, and thus decrease postoperative LOS and hospitalization cost. Fluid restriction, diuresis, and changes in diet advancement or early stoma intubation should be considered measures that may improve outcomes and should be studied more intensively.
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Affiliation(s)
- Anya L Greenberg
- School of Medicine, University of California, San Francisco, 513 Parnassus Ave #S-245, San Francisco, CA, 94143, USA
| | - Yvonne M Kelly
- Department of Surgery, University of California, San Francisco, 513 Parnassus Ave #S-321, San Francisco, CA, 94143, USA
| | - Rachel E McKay
- Department of Anesthesia and Perioperative Care, University of California, San Francisco, San Francisco, CA, USA
| | - Madhulika G Varma
- Department of Surgery, University of California, San Francisco, 550 16th Street, San Francisco, CA, 94158, USA
| | - Ankit Sarin
- Department of Surgery, University of California, San Francisco, 550 16th Street, San Francisco, CA, 94158, USA.
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Imamura H, Takahashi H, Wada H, Mukai Y, Asukai K, Hasegawa S, Yamamoto M, Takeoka T, Shinno N, Hara H, Kanemura T, Nakai N, Haraguchi N, Sugimura K, Nishimura J, Matsuda C, Yasui M, Omori T, Miyata H, Ohue M, Sakon M. Postoperative aggressive diuresis prevents postoperative tissue edema and complications in patients undergoing distal pancreatectomy. Langenbecks Arch Surg 2021; 407:645-654. [PMID: 34665325 DOI: 10.1007/s00423-021-02357-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 10/12/2021] [Indexed: 01/08/2023]
Abstract
PURPOSE Intraoperative fluid restriction is reported to be associated with reduced postoperative tissue edema and decreased incidence of postoperative pancreatic fistula (POPF) in pancreatic surgery. However, there is limited information regarding the postoperative approach to prevent postoperative tissue edema and reduce POPF. METHODS Patients undergoing distal pancreatectomy from 2013 to 2018 in our institute were retrospectively enrolled (n = 128). The patients were classified into the two groups: an early diuresis group (ED group: patients administered diuretic agents on postoperative day 2 or earlier between 2016 and 2018, n = 69) and a conventional diuresis group (CD group: patients administered diuretic agents on postoperative day 3 or later between 2013 and 2015, n = 59). Postoperative tissue edema assessed by CT imaging and the incidence of clinically relevant POPF (CR-PF; grade B or C) were compared. RESULTS Postoperative tissue edema was significantly reduced in the ED group (p < 0.0001). The incidence of CR-PF was lower in the ED group (19% vs. 32%, p = 0.082), especially in patients with postoperative diuresis on POD 1 (12%, p = 0.044). CONCLUSION Early and aggressive postoperative diuresis potentially reduced postoperative visceral tissue edema. This postoperative approach to prevent tissue edema may reduce the incidence of CR-PF in pancreatic surgery.
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Affiliation(s)
- Hiroki Imamura
- Department of Surgery, Osaka International Cancer Institute, 3-1-69, Ohtemae, Chuo-ku, Osaka, 541-8567, Japan
| | - Hidenori Takahashi
- Department of Surgery, Osaka International Cancer Institute, 3-1-69, Ohtemae, Chuo-ku, Osaka, 541-8567, Japan.
| | - Hiroshi Wada
- Department of Surgery, Osaka International Cancer Institute, 3-1-69, Ohtemae, Chuo-ku, Osaka, 541-8567, Japan
| | - Yosuke Mukai
- Department of Surgery, Osaka International Cancer Institute, 3-1-69, Ohtemae, Chuo-ku, Osaka, 541-8567, Japan
| | - Kei Asukai
- Department of Surgery, Osaka International Cancer Institute, 3-1-69, Ohtemae, Chuo-ku, Osaka, 541-8567, Japan
| | - Shinichiro Hasegawa
- Department of Surgery, Osaka International Cancer Institute, 3-1-69, Ohtemae, Chuo-ku, Osaka, 541-8567, Japan
| | - Masaaki Yamamoto
- Department of Surgery, Osaka International Cancer Institute, 3-1-69, Ohtemae, Chuo-ku, Osaka, 541-8567, Japan
| | - Tomohira Takeoka
- Department of Surgery, Osaka International Cancer Institute, 3-1-69, Ohtemae, Chuo-ku, Osaka, 541-8567, Japan
| | - Naoki Shinno
- Department of Surgery, Osaka International Cancer Institute, 3-1-69, Ohtemae, Chuo-ku, Osaka, 541-8567, Japan
| | - Hisashi Hara
- Department of Surgery, Osaka International Cancer Institute, 3-1-69, Ohtemae, Chuo-ku, Osaka, 541-8567, Japan
| | - Takashi Kanemura
- Department of Surgery, Osaka International Cancer Institute, 3-1-69, Ohtemae, Chuo-ku, Osaka, 541-8567, Japan
| | - Nozomu Nakai
- Department of Surgery, Osaka International Cancer Institute, 3-1-69, Ohtemae, Chuo-ku, Osaka, 541-8567, Japan
| | - Naotsugu Haraguchi
- Department of Surgery, Osaka International Cancer Institute, 3-1-69, Ohtemae, Chuo-ku, Osaka, 541-8567, Japan
| | - Keijiro Sugimura
- Department of Surgery, Osaka International Cancer Institute, 3-1-69, Ohtemae, Chuo-ku, Osaka, 541-8567, Japan
| | - Junichi Nishimura
- Department of Surgery, Osaka International Cancer Institute, 3-1-69, Ohtemae, Chuo-ku, Osaka, 541-8567, Japan
| | - Chu Matsuda
- Department of Surgery, Osaka International Cancer Institute, 3-1-69, Ohtemae, Chuo-ku, Osaka, 541-8567, Japan
| | - Masayoshi Yasui
- Department of Surgery, Osaka International Cancer Institute, 3-1-69, Ohtemae, Chuo-ku, Osaka, 541-8567, Japan
| | - Takeshi Omori
- Department of Surgery, Osaka International Cancer Institute, 3-1-69, Ohtemae, Chuo-ku, Osaka, 541-8567, Japan
| | - Hiroshi Miyata
- Department of Surgery, Osaka International Cancer Institute, 3-1-69, Ohtemae, Chuo-ku, Osaka, 541-8567, Japan
| | - Masayuki Ohue
- Department of Surgery, Osaka International Cancer Institute, 3-1-69, Ohtemae, Chuo-ku, Osaka, 541-8567, Japan
| | - Masato Sakon
- Department of Surgery, Osaka International Cancer Institute, 3-1-69, Ohtemae, Chuo-ku, Osaka, 541-8567, Japan
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Enhanced Recovery: A Decade of Experience and Future Prospects at the Mayo Clinic. HEALTHCARE (BASEL, SWITZERLAND) 2021; 9:healthcare9050549. [PMID: 34066696 PMCID: PMC8150975 DOI: 10.3390/healthcare9050549] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/26/2021] [Accepted: 04/12/2021] [Indexed: 02/07/2023]
Abstract
This work aims to describe the implementation and subsequent learnings from the first decade after the full implementation of enhanced recovery pathway for colorectal surgery at a single institution. This paper will describe the diffusion efforts and plans through the Define, Measure, Analyze, Improve, Control (DMAIC) process of ongoing quality improvement and through research efforts. The information applies to all readers that provide surgical care within their organization as the fundamental principles of enhanced recovery for surgery are applicable regardless of the setting.
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Comparison of treatment to improve gastrointestinal functions after colorectal surgery within enhanced recovery programmes: a systematic review and meta-analysis. Sci Rep 2021; 11:7423. [PMID: 33795783 PMCID: PMC8016851 DOI: 10.1038/s41598-021-86699-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 03/10/2021] [Indexed: 02/01/2023] Open
Abstract
Despite a significant improvement with enhanced recovery programmes (ERP), gastro-intestinal (GI) functions that are impaired after colorectal resection and postoperative ileus (POI) remain a significant issue. In the literature, there is little evidence of the distinction between the treatment assessed within or outside ERP. The purpose was to evaluate the efficiency of treatments to reduce POI and improve GI function recovery within ERP. A search was performed in PubMed and Scopus on 20 September 2019. The studies were included if they compared the effect of the administration of a treatment aiming to treat or prevent POI or improve the early functional outcomes of colorectal surgery within an ERP. The main outcome measures were the occurrence of postoperative ileus, time to first flatus and time to first bowel movement. Treatments that were assessed at least three times were included in a meta-analysis. Among the analysed studies, 28 met the eligibility criteria. Six of them focused on chewing-gum and were only randomized controlled trials (RCT) and 8 of them focused on Alvimopan but none of them were RCT. The other measures were assessed in less than 3 studies over RCTs (n = 11) or retrospective studies (n = 2). In the meta-analysis, chewing gum had no significant effect on the endpoints and Alvimopan allowed a significant reduction of the occurrence of POI. Chewing-gum was not effective on GI function recovery in ERP but Alvimopan and the other measures were not sufficiently studies to draw conclusion. Randomised controlled trials are needed.Systematic review registration number CRD42020167339.
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Commentary: Optimal perioperative fluid administration for elective colorectal operations: A call for reason amidst the ERAS blitz. Surgery 2020; 168:320-321. [PMID: 32505548 DOI: 10.1016/j.surg.2020.04.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 04/07/2020] [Indexed: 11/22/2022]
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Grass F, Hübner M, Mathis KL, Hahnloser D, Dozois EJ, Kelley SR, Demartines N, Larson DW. Challenges to accomplish stringent fluid management standards 7 years after enhanced recovery after surgery implementation-The surgeon's perspective. Surgery 2020; 168:313-319. [PMID: 32122658 DOI: 10.1016/j.surg.2020.01.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 01/13/2020] [Accepted: 01/24/2020] [Indexed: 02/08/2023]
Abstract
BACKGROUND This study aimed to analyze fluid management standards in 2 high-volume, enhanced recovery after surgery institutions 7 years after implementation. METHODS Retrospective analysis of consecutive patients undergoing elective, segmental colonic and extensive colorectal resections for benign and malignant pathology (2011-2017). Administration and composition of intravenous fluids, postoperative weight gain, and factors impeding compliance to preidentified fluid thresholds (3L fluid administration, 2.5 kg weight gain) were assessed. Multivariable logistic regression was performed to identify risk factors for postoperative adverse events. RESULTS A total of 5,155 patients were included. Among them, 2,320 patients (45.1%) received >3 L intravenous fluids at postoperative day 0. Fluid totals remained unchanged over the 7-year observation period. Fluid overload was independently associated with postoperative weight gain ≥2.5 kg at postoperative day 2 (odds ratio 1.34, P < .001). Patients with high American Society of Anesthesiologists score (≥3) undergoing open and longer (≥180 minutes) procedures were more likely to exceed both thresholds according to multivariable analysis (all P < .001). Other than open surgery, American Society of Anesthesiologists score ≥3, contamination class ≥3, and malignancy, both thresholds (≥3 L: odds ratio 1.76, 95% confidence interval 1.44-2.15, ≥ 2.5 kg: odds ratio 1.62, 95% confidence interval 1.33-1.97) were independent risk factors for postoperative adverse outcomes (occurring in 28.1% of patients). CONCLUSION Compliance with fluid thresholds appears to be challenging in patients with comorbidities undergoing open and long procedures. Efforts are encouraged because both thresholds are linked to adverse outcomes and appear to be potentially modifiable in selected patients.
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Affiliation(s)
- Fabian Grass
- Division of Colon and Rectal Surgery, Mayo Clinic, 200 First Street SW, Rochester, MN; Department of Visceral Surgery, Lausanne University Hospital (CHUV), University of Lausanne (UNIL), Lausanne, Switzerland
| | - Martin Hübner
- Department of Visceral Surgery, Lausanne University Hospital (CHUV), University of Lausanne (UNIL), Lausanne, Switzerland
| | - Kellie L Mathis
- Division of Colon and Rectal Surgery, Mayo Clinic, 200 First Street SW, Rochester, MN
| | - Dieter Hahnloser
- Department of Visceral Surgery, Lausanne University Hospital (CHUV), University of Lausanne (UNIL), Lausanne, Switzerland
| | - Eric J Dozois
- Division of Colon and Rectal Surgery, Mayo Clinic, 200 First Street SW, Rochester, MN
| | - Scott R Kelley
- Division of Colon and Rectal Surgery, Mayo Clinic, 200 First Street SW, Rochester, MN
| | - Nicolas Demartines
- Department of Visceral Surgery, Lausanne University Hospital (CHUV), University of Lausanne (UNIL), Lausanne, Switzerland
| | - David W Larson
- Division of Colon and Rectal Surgery, Mayo Clinic, 200 First Street SW, Rochester, MN.
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