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Vuaille J, Abrahamsen P, Jensen SM, Diamantopoulos E, Wacker TS, Petersen CT. Modelling pesticide degradation and leaching in conservation agriculture: Effect of no-till and mulching. Sci Total Environ 2024; 929:172559. [PMID: 38641110 DOI: 10.1016/j.scitotenv.2024.172559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 03/28/2024] [Accepted: 04/16/2024] [Indexed: 04/21/2024]
Abstract
No-till and mulching are typical management operations in conservation agriculture (CA). To model pesticide degradation and leaching under a CA scenario, as compared to a conventional-tillage scenario (CT), the mulch module of the agro-hydrological model Daisy was extended. A Daisy soil column was parameterized with measurements of topsoil, mulch, and a realistic subsoil, and tested against published experimental data of pesticide fate in laboratory soil columns covered by mulch. Uncertainty and sensitivity analyses of the new Daisy version were conducted for a series of weather, soil, pesticide, and mulch parameters, using 4939 Monte Carlo simulations under each scenario. Results showed that there was no systematic difference in pesticide leaching from the topsoil (to the subsoil and directly to drains via drain-connected biopores) between CA and CT, but pesticide degradation and sorption were significantly different; degradation in the mulch and uppermost soil surface layer (0-3.5 cm) was larger in CA while degradation was larger in CT when considering the whole topsoil (0-30 cm). This difference for the whole topsoil could be explained by pesticide interception in CA in the part of the mulch not in direct contact with the soil where degradation is assumed not to occur. The sensitivity analysis highlighted non-influential parameters and seven parameters out of twenty-five to be better estimated to improve the accuracy of the predictions.
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Affiliation(s)
- Jeanne Vuaille
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg, Denmark.
| | - Per Abrahamsen
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg, Denmark
| | - Signe M Jensen
- Department of Plant and Environmental Sciences, University of Copenhagen, Højbakkegård Alle 30, 2630 Taastrup, Denmark
| | | | - Tomke S Wacker
- Department of Plant and Environmental Sciences, University of Copenhagen, Højbakkegård Alle 30, 2630 Taastrup, Denmark
| | - Carsten T Petersen
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg, Denmark
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Silva NCCD, Almeida GL, Pimenta HODS, Guimarães ARF, Cordeiro ALL. Safety and feasibility of early mobilization in patients submitted to cardiac surgery using subxiphoid drain. J Bodyw Mov Ther 2024; 38:158-161. [PMID: 38763556 DOI: 10.1016/j.jbmt.2024.01.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 11/18/2023] [Accepted: 01/13/2024] [Indexed: 05/21/2024]
Abstract
INTRODUCTION Patients submitted to heart surgery are restricted to the bed of the Intensive Care Units (ICUs), due to this period of immobility the individual is likely to present clinical and functional alterations. These complications can be avoided by early mobilization; however, in some hospitals, this is not feasible due to the use of subxiphoid drain in the immediate postoperative period. OBJECTIVE To verify the safety and feasibility of mobilizing patients after cardiac surgery using subxiphoid drain. METHODS This was a prospective cohort study. On the first day the patient was positioned in sedestration in bed, then transferred from sitting to orthostasis, gait training and sedestration in an armchair. On the second postoperative day the same activities were performed, but with walking through the ICU with a progressive increase in distance. At all these moments, the patient was using the subxiphoid and intercostal drain. The patients were seen three times a day, but physical rehabilitation was performed twice. The adverse events considered were drain obstruction, accidental removal or displacement, total atrioventricular block, postoperative low output syndrome, cardiorespiratory arrest, pneumomediastinum, infection, and pericardial or myocardial damage. RESULTS 176 patients were evaluated. Only 2 (0.4 %) of the patients had complications during or after mobilization, 1 (0.2 %) due to drain obstruction and 1 (0.2 %) due to accidental removal or displacement. CONCLUSION Based on the data observed in the results, we found that the application of early mobilization in patients using subxiphoid drain after cardiac surgery is a safe and feasible conduct.
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Sanha V, Trindade BO, Elvir FAR. Do surgical drains reduce the postoperative surgical complications following incisional hernia repair? A systematic meta-analysis. Hernia 2024; 28:377-384. [PMID: 38296872 DOI: 10.1007/s10029-024-02961-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 01/05/2024] [Indexed: 02/02/2024]
Abstract
PURPOSE Abdominal surgeries are common surgical procedures worldwide. Incisional hernias commonly develop after abdominal wall surgery. Surgery is the definite treatment for most incisional hernias but carries a higher rate of complications. Although frequently used, the real benefit of using drain tubes to reduce surgical complications after incisional hernia repair is uncertain. METHODS PubMed and Embase databases were searched for studies that compared the outcomes of drain vs. no-drain placement and the risk of complications in patients undergoing incisional hernia repair. Primary endpoints were infection, seroma formation, length of hospital stay, and readmission rate. RESULTS From a total of 771 studies, we included 2 RCTs and 4 non-RCTs. A total of 40,325 patients were included, of which 28 497 (71%) patients used drain tubes, and 11 828 (29%) had no drains. The drain group had a significantly higher infection rate (OR 1.89; CI 1.13-3.16; P = 0.01) and mean length of hospital stay (Mean Difference-MD 2.66; 95% CI 0.81-4.52; P = 0.005). There was no difference in seroma formation and the readmission rate. CONCLUSION This comprehensive systematic meta-analysis concluded that drain tube placement after incisional hernia repair is associated with increased infection rate and length of hospital stay without affecting the rate of seroma formation and readmission rate. Prospective randomized studies are required to confirm these findings.
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Affiliation(s)
- V Sanha
- Department of Surgery, The Federal University of Health Science of Porto Alegre, Rua Sarmento Leite, Porto Alegre, 245, Brazil.
| | - B O Trindade
- Department of Surgery, The Federal University of Health Science of Porto Alegre, Rua Sarmento Leite, Porto Alegre, 245, Brazil
| | - F A R Elvir
- Department of Surgery, The Federal University of Health Science of Porto Alegre, Rua Sarmento Leite, Porto Alegre, 245, Brazil
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Mallory N, Gibbs D, Belmonte A, Mallory TH, Santiago-Torres J. Utility of prophylactic closed suction drainage in open reduction and internal fixation for tibial plateau fracture. Eur J Orthop Surg Traumatol 2024; 34:271-277. [PMID: 37452136 DOI: 10.1007/s00590-023-03581-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 05/10/2023] [Indexed: 07/18/2023]
Abstract
PURPOSE The usefulness of closed suction drains (CSD) after open reduction and internal fixation (ORIF) of tibial plateau fractures is a contested topic. The purpose of this study was to examine the impact of CSD in postoperative outcomes after tibial plateau fracture. METHODS Data were retrospectively collected from patients who underwent primary repair of closed tibial plateau fractures via an anterolateral approach between June 2021 to May 2022 at a single academic center. Fifty-six patients were included and 28 received CSDs at time of surgery. P values less than 0.05 were considered significant. RESULTS Fifty-six patients were included. There was no significant difference in demographics, pre- and post-op hemoglobin, estimated blood loss during surgery, length of stay, postoperative MMEs and pain at 3 month follow-up, deep vein thrombosis (DVT), compartment syndrome, flexion contracture, use of incisional vac, infection rate, wound drainage, hematoma, neurologic pain, dehiscence, additional surgery, or range of motion at 3 months follow-up. We noted a significant difference in Defense and Veterans Pain Rating Scale (DVPRS) on POD1, demonstrating greater pain in those in the CSD group. CONCLUSION Our findings suggest that the use of CSD in ORIF of tibial plateau fractures may not be of significant prophylactic benefit. CSDs in ORIF patients were associated with increased early postoperative pain and had no identifiable benefits. LEVEL OF EVIDENCE III.
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Affiliation(s)
- Noah Mallory
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, 241 W 11th Ave, Suite 6065L, OH, 43201, Columbus, USA
- The Ohio State University College of Medicine, Columbus, OH, USA
| | - David Gibbs
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, 241 W 11th Ave, Suite 6065L, OH, 43201, Columbus, USA
- The Ohio State University College of Medicine, Columbus, OH, USA
| | - Anthony Belmonte
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, 241 W 11th Ave, Suite 6065L, OH, 43201, Columbus, USA
| | - Thomas H Mallory
- The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Juan Santiago-Torres
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, 241 W 11th Ave, Suite 6065L, OH, 43201, Columbus, USA.
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Najjar-Debbiny R, Feldman M, Groizberg-Schwartzman D, Sobeh S, Khoury L, Yassin R, Weber G, Salach O, Shaked-Mishan P, Schwartz N, Saliba W. Unveiling the hidden threat of carbapenemase-producing Enterobacteriaceae in hospital water environments: A single-center study. Am J Infect Control 2023; 51:1279-1281. [PMID: 37499760 DOI: 10.1016/j.ajic.2023.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 07/19/2023] [Accepted: 07/19/2023] [Indexed: 07/29/2023]
Abstract
This retrospective study examined the presence of carbapenemase-producing Enterobacteriaceae in hospital water environments. Results showed that carbapenemase-producing Enterobacteriaceae was detected in 41.5% of the samples within 1 m of a water source (showers or sinks), with 20.6% of the positive samples associated with shower water sources.
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Affiliation(s)
- Ronza Najjar-Debbiny
- Infection Prevention and Control unit, Lady Davis Carmel medical center, Haifa, Israel; Ruth and Bruce Rappaport, Faculty of medicine, Technion, Haifa, Israel.
| | - Marina Feldman
- Infection Prevention and Control unit, Lady Davis Carmel medical center, Haifa, Israel
| | | | - Shereen Sobeh
- Infection Prevention and Control unit, Lady Davis Carmel medical center, Haifa, Israel
| | - Lina Khoury
- Infection Prevention and Control unit, Lady Davis Carmel medical center, Haifa, Israel
| | - Rabah Yassin
- Infectious Diseases unit, Lady Davis Carmel medical center, Haifa, Israel
| | - Gabriel Weber
- Infectious Diseases unit, Lady Davis Carmel medical center, Haifa, Israel
| | - Ola Salach
- Clinical Microbiology Lab, Lady Davis Carmel medical center, Haifa, Israel
| | | | - Naama Schwartz
- School of Public Health, University of Haifa, Haifa, Israel
| | - Walid Saliba
- Ruth and Bruce Rappaport, Faculty of medicine, Technion, Haifa, Israel; Department of Community Medicine and Epidemiology, Lady Davis Carmel Medical Center, Haifa, Israel
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Moog P, Jiang J, Buchner L, Suhova I, Schmauss D, Machens HG, Kükrek H. Aesthetic training concept during plastic surgery residency - Opportunity or risk? Heliyon 2023; 9:e17398. [PMID: 37416684 PMCID: PMC10320284 DOI: 10.1016/j.heliyon.2023.e17398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 06/14/2023] [Accepted: 06/15/2023] [Indexed: 07/08/2023] Open
Abstract
Background Aesthetic surgery training renders to be challenging to acquire sufficient hands-on experience during residency. To resolve this problem, the "Munich Model" was established in our clinic: Senior residents perform aesthetic surgeries, supervised by an experienced plastic surgeon while patients benefit from reduced surgery costs. With this model, we hypothesize no significant differences in the postoperative outcome between procedures performed by residents and plastic surgeons. Methods Between August 2012 and December 2017, 481 aesthetic surgeries were included in this retrospective single-center study, of which 283 were performed by residents and 198 by plastic surgeons. Procedures included mastopexy, abdominoplasty, extremity lift, breast reduction, breast augmentation, facial surgery, aesthetic liposuction and lipedema liposuction. Postoperative outcomes were compared regarding surgery time, time of drain removal, inpatient length of stay, duration of wound healing, perioperative blood loss and occurrence of major (surgical revision needed) and minor complications (no surgery needed). Results We found no significant differences in aesthetic surgical procedures between residents and board-certified plastic surgeons in the outcome measures of surgery duration, time of drain removal, inpatient length of stay, perioperative blood loss and complication rate, including major and minor complications. Only the inpatient stay was prolonged in aesthetic liposuctions performed by residents. Conclusion This study demonstrates comparatively that supervised aesthetic surgeries at a university hospital utilizing the "Munich Model" widely meet the specialist surgeons' standards.
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Affiliation(s)
- Philipp Moog
- Department of Plastic Surgery and Hand Surgery, Klinikum Rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675, München, Germany
| | - Jun Jiang
- Department of Plastic Surgery and Hand Surgery, Klinikum Rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675, München, Germany
| | - Lara Buchner
- Department of Plastic Surgery and Hand Surgery, Klinikum Rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675, München, Germany
| | - Inessa Suhova
- Department of Plastic Surgery and Hand Surgery, Klinikum Rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675, München, Germany
| | - Daniel Schmauss
- Department of Plastic Surgery and Hand Surgery, Klinikum Rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675, München, Germany
- Faculty of Biomedical Sciences, Università della Svizzera Italiana, Lugano, Switzerland
| | - Hans-Günther Machens
- Department of Plastic Surgery and Hand Surgery, Klinikum Rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675, München, Germany
| | - Haydar Kükrek
- Department of Plastic Surgery and Hand Surgery, Klinikum Rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675, München, Germany
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Pollini T, Wong P, Kone LB, Khoury RE, Kabir C, Maker VK, Banulescu M, Maker AV. Drain Placement After Pancreatic Resection: Friend or Foe For Surgical Site Infections? J Gastrointest Surg 2023; 27:724-729. [PMID: 36737592 DOI: 10.1007/s11605-023-05612-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 01/14/2023] [Indexed: 02/05/2023]
Abstract
BACKGROUND Despite multiple studies and randomized trials, there remains controversy over whether drains should be placed, and if so for how long, after pancreas resection. The aim was to determine if post-pancreatectomy drain placement and timing of drain removal were associated with differences in infectious outcomes and, if so, which specific procedures and infectious sites were most at risk. METHODS The ACS-NSQIP targeted pancreatectomy database was utilized to identify patients who underwent pancreatectomies between 2015 and 2020 with postoperative drain placement for retrospective cohort analysis. A propensity score matching analyses was conducted to determine associations between drain placement and surgical site infections (SSI). RESULTS Of 39,057 pancreatic resections, 66.4% were proximal pancreatectomies, and 33.6% were distal pancreatectomies. After propensity score matching, drain placement was not associated with significantly lower rates of superficial SSI (7% vs 9%, p = 0.755) or organ/space SSI (17% vs 16%, p = 0.647) after proximal pancreatectomy. After distal pancreatectomy, drain placement was associated with higher rates of organ/space SSI (12% vs 9%, p = 0.010). Drain removal on or after postoperative day 3 was significantly associated with higher rates of SSI in both proximal and distal pancreatectomy. CONCLUSIONS Drain placement is associated with an increased rate of organ/space SSI after distal pancreatectomy and not after pancreaticoduodenectomy. When drains are utilized, early removal is associated with a reduction of SSI after all types of pancreatectomy. In surgical units where post-pancreatectomy SSI is a concern, selective drain placement for high-risk glands or after distal pancreatectomy, combined with early drain removal, may be considered.
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Affiliation(s)
- Tommaso Pollini
- Division of Surgical Oncology, Department of Surgery, University of California San Francisco, San Francisco, USA
| | - Paul Wong
- Division of Surgical Oncology, Department of Surgery, University of California San Francisco, San Francisco, USA
| | - Lyonell B Kone
- Department of Surgery, University of Illinois at Chicago, Creticos Cancer Center at Advocate Illinois Masonic Medical Center, Chicago, IL, USA
| | - Rym El Khoury
- Division of Surgical Oncology, Department of Surgery, University of California San Francisco, San Francisco, USA
| | - Chris Kabir
- Department of Surgery, University of Illinois at Chicago, Creticos Cancer Center at Advocate Illinois Masonic Medical Center, Chicago, IL, USA
| | - Vijay K Maker
- Department of Surgery, University of Illinois at Chicago, Creticos Cancer Center at Advocate Illinois Masonic Medical Center, Chicago, IL, USA
| | - Mihaela Banulescu
- Department of Surgery, University of Illinois at Chicago, Creticos Cancer Center at Advocate Illinois Masonic Medical Center, Chicago, IL, USA
| | - Ajay V Maker
- Division of Surgical Oncology, Department of Surgery, University of California San Francisco, San Francisco, USA.
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Shahid SU, Abbasi NA, Tahir A, Ahmad S, Ahmad SR. Health risk assessment and geospatial analysis of arsenic contamination in shallow aquifer along Ravi River, Lahore, Pakistan. Environ Sci Pollut Res Int 2023; 30:4866-4880. [PMID: 35976585 DOI: 10.1007/s11356-022-22458-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 08/05/2022] [Indexed: 06/15/2023]
Abstract
The exposure variation of arsenic from different ground and surface water sources has remained unpredictable which may cause severe human health problems. The current study is, therefore, designed to analyze the spatial variability of arsenic contamination in shallow aquifer and assess the potential human health risks. For this purpose, a total of 55 groundwater, 10 drain water, 4 river water, and 6 sediment samples were collected along zero to 5 km stretch of the River Ravi, Lahore. All water samples were tested for As, pH, and total dissolved solids (TDS), whereas sediments were only tested for As. Health risk models were used to predict cancer and non-cancer risk in adults and children. Among water samples, highest median (minimum-maximum) concentrations (µg/L) of As were recorded 53.32 (1.98-1555) in groundwater, followed by 53.04 (1.58-351.5) in drain water, and 4.80 (2.13-8.67) in river water, respectively, whereas As concentration (mg/kg) in river sediments was 6.03 (5.56-13.92). Variation of As in groundwater was non-significant (P > 0.05) among every 1-km stretch from the Ravi River. However, maximum median concentrations (µg/L) of 60.18 and 60.08 were recorded between 2-3 and 0-1 km from River Ravi, respectively, reflecting possible mixing of river water with shallow aquifers. A very high cancer and non-cancer risk (HI > 1.0 × 10-4) through groundwater As exposure was predicted for both children and adults. The current study concluded that prevalence of As above WHO prescribed limits in shallow aquifer along the urban stretch of the River Ravi is posing serious health risk to the exposed population.
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Affiliation(s)
- Syed Umair Shahid
- Centre for Integrated Mountain Research (CIMR), University of the Punjab, Lahore, Pakistan
| | - Naeem Akhtar Abbasi
- College of Earth and Environmental Sciences (CEES), University of the Punjab, Lahore, Pakistan.
| | - Areej Tahir
- College of Earth and Environmental Sciences (CEES), University of the Punjab, Lahore, Pakistan
| | - Sajjad Ahmad
- World Wildlife Fund (WWF), Ferozepur Road, Lahore, Pakistan
| | - Sajid Rashid Ahmad
- College of Earth and Environmental Sciences (CEES), University of the Punjab, Lahore, Pakistan
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Frechon P, Michon J, Baldolli A, Emery E, Lucas F, Verdon R, Fournier A, Gaberel T. Medicosurgical management of deep wound infections after thoracolumbar instrumentation: risk factors of poor outcomes. Acta Neurochir (Wien) 2022; 164:881-890. [PMID: 35128604 DOI: 10.1007/s00701-022-05128-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 01/18/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND Surgical site infection (SSI) after thoracolumbar osteosynthesis is a common complication. Its management relies on surgical revision and antibiotic therapy, but treatment failure is not uncommon. The aim of our study was to assess the frequency of SSI management failure and its risk factors. METHODS A retrospective study of patients hospitalized from 2011 to 2019 at the University Hospital of Caen was carried out. The infection rate and the time to onset of failure were assessed over a minimum follow-up of 1 year. Treatment failure was defined as the occurrence of a new intervention in the spine in the year following the end of antibiotic therapy, the establishment of long-term suppressive antibiotic therapy, or death from any cause within 1 year of the end of antibiotic therapy. We compared the treatment failure group with the treatment success group to determine risk factors for treatment failure. RESULTS A total of 2881 patients underwent surgery during the study period, and 92 developed an SSI, corresponding to an SSI rate of 3.19%. Thirty-six percent of the patients with an SSI presented treatment failure. The median time to failure was 31 days. On multivariate analysis, diabetes mellitus was identified as a risk factor for treatment failure, whereas prolonged postoperative drainage for 4 to 5 days was a protective factor. CONCLUSIONS The number of failures was significant, and failure occurred mainly during the early phase. To decrease the risk of treatment failure, prolonged duration of postoperative drainage seems to be helpful. Additionally, as diabetes is a risk factor for treatment failure, good control of glycemia in these patients might impact their outcomes.
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Affiliation(s)
- Paul Frechon
- Department of Neurosurgery, Caen University Hospital, Avenue de La Côte de Nacre, CHU Caen, 14033, Caen, France.
| | - Jocelyn Michon
- Department of Infectious Diseases, Caen University Hospital, Avenue de La Côte de Nacre, CHU Caen, 14033, Caen, France
| | - Aurelie Baldolli
- Department of Infectious Diseases, Caen University Hospital, Avenue de La Côte de Nacre, CHU Caen, 14033, Caen, France
| | - Evelyne Emery
- Department of Neurosurgery, Caen University Hospital, Avenue de La Côte de Nacre, CHU Caen, 14033, Caen, France
- Physiopathology and Imaging of Neurological Disorders (PhIND), Normandie Université, UNICAEN, INSERM, UMR-S U1237, GIP Cyceron, 14000, Caen, France
| | - François Lucas
- Department of Neurosurgery, Saint Martin Private Hospital, 18 rue des Roquemonts, 14000, Caen, France
| | - Renaud Verdon
- Department of Infectious Diseases, Caen University Hospital, Avenue de La Côte de Nacre, CHU Caen, 14033, Caen, France
| | - Anna Fournier
- Department of Infectious Diseases, Caen University Hospital, Avenue de La Côte de Nacre, CHU Caen, 14033, Caen, France
| | - Thomas Gaberel
- Department of Neurosurgery, Caen University Hospital, Avenue de La Côte de Nacre, CHU Caen, 14033, Caen, France
- Physiopathology and Imaging of Neurological Disorders (PhIND), Normandie Université, UNICAEN, INSERM, UMR-S U1237, GIP Cyceron, 14000, Caen, France
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Smith A, Shapiro M, Fabian R, Morales HM, Taghavi S, Duchesne J, Schroll R, McGrew P. Re-visiting Drain Use in Operative Liver Trauma: A Retrospective Analysis. J Surg Res 2021; 270:76-84. [PMID: 34644621 DOI: 10.1016/j.jss.2021.08.039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 07/18/2021] [Accepted: 08/27/2021] [Indexed: 11/23/2022]
Abstract
BACKGROUND Despite the liver being one of the most frequently injured abdominal organs in trauma patients, clinical management strategies differ between trauma surgeons. Few studies have critically evaluated current practice patterns in the operative management of liver trauma. Historical studies recommended against the use of drains but there has not been a modern investigation of this issue. The objective of this study was to analyze outcomes associated with intra-operative drain use for liver trauma. METHODS A retrospective chart review of all adult trauma patients presenting to a Level I trauma center from 2012 to 2018 was performed. Patients who underwent operative management of liver trauma were divided into groups based on whether an intra-abdominal drain was utilized and differences in outcomes between the groups were analyzed. The primary endpoint evaluated was post-operative intra-abdominal abscesses. Univariate and multivariate analyses were performed. RESULTS 184 patients with operative management of liver trauma were included in the study. Closed suction drains were utilized in 26.1% of post-operative patients. Rate of intra-abdominal abscesses was significantly higher in the drain group (35.4% versus 8.8%, P < 0.001). Drains were more commonly used in patients receiving more units of PRBCs (median, 9 units [IQR 4-20] versus median 5.5 units, [IQR 2-14], P = 0.03). Drain use was found to be an independent risk factor for post-operative intra-abdominal abscess on multivariate analysis (OR 4.9, 95% CI 1.7-14, P = 0.003). CONCLUSIONS The results of this study support previous conclusions that drain placement for operative liver trauma is associated with increased risks of infectious complications. Drains were used in patients with more severe liver injury, intra-operative bile leaks, penetrating trauma, and increased blood transfusion requirements. Future studies should focus on the development of specific guidelines for the use of drains in liver trauma.
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Bruna M, Mingol F, Navasquillo M, Cholewa H, Vaqué FJ. "Tubeless" esophagectomy: Less is more. Cir Esp 2021; 99:457-462. [PMID: 34083165 DOI: 10.1016/j.cireng.2021.05.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 12/08/2020] [Indexed: 11/26/2022]
Abstract
The esophageal cancer surgery is a complex procedure with elevated rates of both morbidity and mortality, which is why, in order to achieve adequate results, it should be performed in high volume centers, where complete multidisciplinary support is available and recent clinical guidelines are applied. We describe the initial experience and the technique of "tubeless" esophagectomy where esophageal resection and mediastinal lymphadenectomy are performed and no drains nor tubes of any kind are placed, with the aim to decrease the level of surgical aggression, enhance the postoperative comfort and accelerate the patient́s recovery.
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Affiliation(s)
- Marcos Bruna
- Unidad de Cirugía Esofagogástrica y Carcinomatosis Peritoneal, Servicio de Cirugía General y del Aparato Digestivo, Hospital Universitario y Politécnico La Fe, Valencia, Spain.
| | - Fernando Mingol
- Unidad de Cirugía Esofagogástrica y Carcinomatosis Peritoneal, Servicio de Cirugía General y del Aparato Digestivo, Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - Mireia Navasquillo
- Unidad de Cirugía Esofagogástrica y Carcinomatosis Peritoneal, Servicio de Cirugía General y del Aparato Digestivo, Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - Hanna Cholewa
- Unidad de Cirugía Esofagogástrica y Carcinomatosis Peritoneal, Servicio de Cirugía General y del Aparato Digestivo, Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - Francisco Javier Vaqué
- Unidad de Cirugía Esofagogástrica y Carcinomatosis Peritoneal, Servicio de Cirugía General y del Aparato Digestivo, Hospital Universitario y Politécnico La Fe, Valencia, Spain
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Bruna M, Mingol F, Navasquillo M, Cholewa H, Vaqué FJ. "Tubeless" esophagectomy: Less is more. Cir Esp 2021. [PMID: 33468359 DOI: 10.1016/j.ciresp.2020.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The esophageal cancer surgery is a complex procedure with elevated rates of both morbidity and mortality, which is why, in order to achieve adequate results, it should be performed in high volume centers, where complete multidisciplinary support is available and recent clinical guidelines are applied. We describe the initial experience and the technique of "tubeless" esophagectomy where esophageal resection and mediastinal lymphadenectomy are performed and no drains nor tubes of any kind are placed, with the aim to decrease the level of surgical aggression, enhance the postoperative comfort and accelerate the patient́s recovery.
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Affiliation(s)
- Marcos Bruna
- Unidad de Cirugía Esofagogástrica y Carcinomatosis Peritoneal, Servicio de Cirugía General y del Aparato Digestivo, Hospital Universitario y Politécnico La Fe, Valencia, España.
| | - Fernando Mingol
- Unidad de Cirugía Esofagogástrica y Carcinomatosis Peritoneal, Servicio de Cirugía General y del Aparato Digestivo, Hospital Universitario y Politécnico La Fe, Valencia, España
| | - Mireia Navasquillo
- Unidad de Cirugía Esofagogástrica y Carcinomatosis Peritoneal, Servicio de Cirugía General y del Aparato Digestivo, Hospital Universitario y Politécnico La Fe, Valencia, España
| | - Hanna Cholewa
- Unidad de Cirugía Esofagogástrica y Carcinomatosis Peritoneal, Servicio de Cirugía General y del Aparato Digestivo, Hospital Universitario y Politécnico La Fe, Valencia, España
| | - Francisco Javier Vaqué
- Unidad de Cirugía Esofagogástrica y Carcinomatosis Peritoneal, Servicio de Cirugía General y del Aparato Digestivo, Hospital Universitario y Politécnico La Fe, Valencia, España
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EuroSurg Collaborative. Management of COMPlicAted intra-abdominal collectionS after colorectal Surgery (COMPASS): protocol for a multicentre, observational, prospective international study of drain placement practices in colorectal surgery. Colorectal Dis 2020; 22:2315-21. [PMID: 32716111 DOI: 10.1111/codi.15275] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Accepted: 07/09/2020] [Indexed: 02/08/2023]
Abstract
AIM Postoperative drains have historically been used for the prevention and early detection of intra-abdominal collections. However, current evidence suggests that prophylactic drain placement following colorectal surgery has no significant clinical benefit. This is reflected in the enhanced recovery after surgery (ERAS) guidelines, which recommend against their routine use. The Ileus Management International study found more than one-third of participating centres across the world routinely used drains in the majority of colorectal resections. The aim of the present study is to audit international compliance with ERAS guidelines regarding the use of postoperative drains in colorectal surgery. METHOD This prospective, multicentre audit will be conducted via the student- and trainee-led EuroSurg Collaborative network across Europe, South Africa and Australasia. Data will be collected on consecutive patients undergoing elective and emergency colorectal surgery with 30-day follow-up. This will include any colorectal resection, formation of colostomy/ileostomy and reversal of stoma. The primary end-point will be adherence to ERAS guidelines for intra-abdominal drain placement. Secondary outcomes will include the following: time to diagnosis of intra-abdominal postoperative collections; output and time to removal of drains; and 30-day postoperative complications defined by the Clavien-Dindo classification. CONCLUSION This protocol describes the methodology for the first international audit of intra-abdominal drain placement after colorectal surgery. The study will be conducted across a large collaborative network with quality assurance and data validation strategies. This will provide a clear understanding of current practice and novel evidence regarding the efficacy and safety of intra-abdominal drain placement in colorectal surgical patients.
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Huang MM, Patel HD, Su ZT, Pavlovich CP, Partin AW, Pierorazio PM, Allaf ME. A prospective comparative study of routine versus deferred pelvic drain placement after radical prostatectomy: impact on complications and opioid use. World J Urol 2020; 39:1845-1851. [PMID: 32929627 DOI: 10.1007/s00345-020-03439-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 09/03/2020] [Indexed: 10/23/2022] Open
Abstract
PURPOSE To evaluate the association of post-RP drain placement with post-operative complications and opioid use at a high-volume institution. METHODS A prospective, comparative cohort study of patients undergoing robot-assisted or open RP was conducted. Patients for two surgeons did not routinely receive pelvic drains ("No Drain" arm), while the remainder routinely placed drains ("Drain" arm). Outcomes were evaluated at 30 days including Clavien-Dindo complications and opioid use. Intention-to-treat primary analysis and additional secondary analyses were performed using appropriate statistical tests and logistic regression. RESULTS Of 498 total patients, 144 (28.9%) were in the No Drain arm (all robot-assisted) and 354 (71.1%) in the Drain arm. In the No Drain arm, 19 (13.2%) intraoperatively were chosen to receive drains. There was no difference in overall or major (Clavien ≥ 3) complications between groups (p = 0.2 and 0.4, respectively). Drain deferral did not predict complications on multivariable analysis adjusted for age, BMI, comorbidities, clinical risk, surgical approach, operating time, lymphadenectomy, and number of nodes removed [OR 0.61, 95% CI 0.34-1.11, p = 0.10]; nor did it predict symptomatic fluid collection, adjusting for lymphadenectomy and nodes removed [OR 1.14, 95% CI 0.43-3.60, p = 0.8]. Drain deferral did not decrease opioid use (p = 0.5). Per protocol analysis and restriction to robot-assisted cases demonstrated similar results. CONCLUSION There was no difference in adverse events, complications, symptomatic collections, or opioid use with deferral of routine drain placement after RP. Experienced surgeons may safely defer drain placement in the majority of robot-assisted RP cases.
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Affiliation(s)
- Mitchell M Huang
- Department of Urology, The James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Park 213, Baltimore, MD, 21287, USA.
| | - Hiten D Patel
- Department of Urology, The James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Park 213, Baltimore, MD, 21287, USA
| | - Zhuo T Su
- Department of Urology, The James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Park 213, Baltimore, MD, 21287, USA
| | - Christian P Pavlovich
- Department of Urology, The James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Park 213, Baltimore, MD, 21287, USA
| | - Alan W Partin
- Department of Urology, The James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Park 213, Baltimore, MD, 21287, USA
| | - Phillip M Pierorazio
- Department of Urology, The James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Park 213, Baltimore, MD, 21287, USA
| | - Mohamad E Allaf
- Department of Urology, The James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Park 213, Baltimore, MD, 21287, USA
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Köckerling F, Hantel E, Adolf D, Stechemesser B, Niebuhr H, Lorenz R, Zarras K, Marusch F. Do drains have an impact on the outcome after primary elective unilateral inguinal hernia repair in men? Hernia 2020; 24:1083-1091. [PMID: 32566993 DOI: 10.1007/s10029-020-02254-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 06/15/2020] [Indexed: 11/25/2022]
Abstract
INTRODUCTION The use of drains continues to be a controversial topic in surgery. In a review of that topic for incisional hernia it was not possible to find sufficient evidence of the need for a drain. Likewise, for inguinal hernia surgery the data available are insufficient. METHODS In a multivariable analysis of data from the Herniamed Registry for 98,321 patients with primary elective unilateral inguinal hernia repair in men, the role of a drain was investigated. RESULTS A drain was used in 24.7% (n = 24,287/98,321) of patients. These patients were on average older, had higher BMI, longer operating time and received a smaller mesh. Drains were also used more often for patients with higher ASA score, risk factors, larger defects and scrotal hernia localization as well as for Lichtenstein, TEP and suture repair. The use of drains was highly significantly associated with intra- and postoperative complications as well as with complication-related reoperations. Hence, drains are used selectively in inguinal hernia repair for patients at higher risk of perioperative complications. Despite the use of drains, the outcome in this risk group is less favorable. It remains unclear if drains prevent further complications in high-risk patients. CONCLUSION Drains are used selectively in high-risk men with primary elective unilateral inguinal hernia repair. Drains are associated with intra- and postoperative complications rates and complication-related reoperation rate. Drains can serve as an indicator for early detection of complications.
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Affiliation(s)
- F Köckerling
- Department of Surgery and Center for Minimally Invasive Surgery, Academic Teaching Hospital of Charité Medical School, Vivantes Hospital, Neue Bergstrasse 6, 13585, Berlin, Germany.
| | - E Hantel
- Department of General, Visceral, Vascular and Thoracic Surgery, Ernst Von Bergmann Hospital, Charlottenstrasse 72, 14467, Potsdam, Germany
| | - D Adolf
- StatConsult GmbH, Halberstädter Strasse 40 a, 39112, Magdeburg, Germany
| | - B Stechemesser
- Hernia Center, Pan Hospital, Zeppelinstraße 1, 50667, Köln, Germany
| | - H Niebuhr
- Hanse-Hernienzentrum, Eppendorfer Baum 8, 20249, Hamburg, Germany
| | - R Lorenz
- 3+Chirurgen, Klosterstraße 34/35, 13581, Berlin-Spandau, Germany
| | - K Zarras
- Department of Visceral, Minimally Invasive and Oncologic Surgery, Academic Teaching Hospital of University of Düsseldorf, Marien Hospital, Rochusstraße 2, 40479, Düsseldorf, Germany
| | - F Marusch
- Department of General, Visceral, Vascular and Thoracic Surgery, Ernst Von Bergmann Hospital, Charlottenstrasse 72, 14467, Potsdam, Germany
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Glancz LJ, Poon MTC, Hutchinson PJ, Kolias AG, Brennan PM; British Neurosurgical Trainee Research Collaborative (BNTRC). Drains result in greater reduction of subdural width and midline shift in burr hole evacuation of chronic subdural haematoma. Acta Neurochir (Wien) 2020; 162:1455-66. [PMID: 32338300 DOI: 10.1007/s00701-020-04356-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 04/02/2020] [Indexed: 10/26/2022]
Abstract
BACKGROUND Drain insertion following chronic subdural haematoma (CSDH) evacuation reduces recurrence and improves outcomes. The mechanism of this improvement is uncertain. We assessed whether drains result in improved postoperative imaging, and which radiological factors are associated with recurrence and functional outcome. METHODS A multi-centre, prospective cohort study of CSDH patients was performed between May 2013 and January 2014. Patients aged > 16 years undergoing burr hole evacuation of primary CSDH with pre- and postoperative imaging were included in this subgroup analysis. Baseline and clinical details were collected. Pre- and postoperative maximal subdural width and midline shift (MLS) along with clot density were recorded. Primary outcomes comprised mRS at discharge and symptomatic recurrence requiring re-drainage. Comparisons were made using multiple logistic regression. RESULTS Three hundred nineteen patients were identified for inclusion. Two hundred seventy-two of 319 (85%) patients underwent drain insertion at the time of surgery versus 45/319 (14%) who did not. Twenty-nine of 272 patients who underwent drain insertion experienced recurrence (10.9%) versus 9 of 45 patients without drain insertion (20.5%; p = 0.07). Overall change in median subdural width was significantly greater in the drain versus 'no drain' groups (11 mm versus 6 mm, p < 0.01). Overall change in median midline shift (MLS) was also significantly greater in the drain group (4 mm versus 3 mm, p < 0.01). On multivariate analysis, change in maximal width and MLS were significant predictors of recurrence, although only the former remained a significant predictor for functional outcome. CONCLUSIONS The use of subdural drains results in significantly improved postoperative imaging in burr hole evacuation of CSDH, thus providing radiological corroboration for their recommended use.
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Glancz LJ, Poon MTC, Coulter IC, Hutchinson PJ, Kolias AG, Brennan PM. Does Drain Position and Duration Influence Outcomes in Patients Undergoing Burr-Hole Evacuation of Chronic Subdural Hematoma? Lessons from a UK Multicenter Prospective Cohort Study. Neurosurgery 2020; 85:486-493. [PMID: 30169738 PMCID: PMC6761312 DOI: 10.1093/neuros/nyy366] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 07/14/2018] [Indexed: 11/21/2022] Open
Abstract
Background Drain insertion following chronic subdural hematoma (CSDH) evacuation improves patient outcomes. Objective To examine whether this is influenced by variation in drain location, positioning or duration of placement. Methods We performed a subgroup analysis of a previously reported multicenter, prospective cohort study of CSDH patients performed between May 2013 and January 2014. Data were analyzed relating drain location (subdural or subgaleal), position (through a frontal or parietal burr hole), and duration of insertion, to outcomes in patients aged >16 yr undergoing burr-hole drainage of primary CSDH. Primary outcomes comprised modified Rankin scale (mRS) at discharge and symptomatic recurrence requiring redrainage within 60 d. Results A total of 577 patients were analyzed. The recurrence rate of 6.7% (12/160) in the frontal subdural drain group was comparable to 8.8% (30/343) in the parietal subdural drain group. Only 44/577 (7.6%) patients underwent subgaleal drain insertion. Recurrence rates were comparable between subdural (7.7%; 41/533) and subgaleal (9.1%; 4/44) groups (P = .95). We found no significant differences in discharge mRS between these groups. Recurrence rates were comparable between patients with postoperative drainage for 1 or 2 d, 6.4% and 8.4%, respectively (P = .44). There was no significant difference in mRS scores between these 2 groups (P = .56). CONCLUSION Drain insertion after CSDH drainage is important, but position (subgaleal or subdural) and duration did not appear to influence recurrence rate or clinical outcomes. Similarly, drain location did not influence recurrence rate nor outcomes where both parietal and frontal burr holes were made. Further prospective cohort studies or randomized controlled trials could provide further clarification.
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Affiliation(s)
| | - Michael Tin Chung Poon
- Translational Neurosurgery, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, United Kingdom
| | - Ian Craig Coulter
- Department of Neurosurgery, Royal Victoria Infirmary, Newcastle, United Kingdom
| | - Peter John Hutchinson
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Addenbrooke's Hospital, Cambridge, United Kingdom.,Surgery Theme, Cambridge Clinical Trials Unit, Cambridge Biomedical Campus, Cambridge, United Kingdom
| | - Angelos Georgiou Kolias
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Addenbrooke's Hospital, Cambridge, United Kingdom.,Surgery Theme, Cambridge Clinical Trials Unit, Cambridge Biomedical Campus, Cambridge, United Kingdom
| | - Paul Martin Brennan
- Translational Neurosurgery, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, United Kingdom
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Miranda-Rosales LM, Kcam-Mayorca EJ, Luna-Abanto J, Malpartida-Saavedra H, Flores-Flores C. Use of drains and post-operative complications in secondary peritonitis for complicated acute appendicitis at a national hospital. CIR CIR 2020; 87:540-544. [PMID: 31448803 DOI: 10.24875/ciru.19000713] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Introduction Acute appendicitis is the main cause of emergency surgical care. Post-operative patients with complicated acute appendicitis present complications, many of them expected. The use of drains is one of the measures to prevent these complications; however, recent meta-analyzes do not justify this therapeutic measure. This study evaluates the relationship between use and non-use of drains, post-operative complications in patients with complicated peritonitis secondary to acute appendicitis. Methods A retrospective observational cohort study was conducted. The outcomes were analyzed by Chi-square test and Student's t-test; Fisher exact test was performed. Results The average operating time was 1.46 h (1.0-2.5) and 1.66 (1-3) for patients without drains and with drains, respectively, the difference was significant (p = 0.001). Post-operative fever was more prevalent in group with a drains odds ratio (OR) 3.4 (confidence interval [CI] 95% 1.4-7.9). The mean time of hospitalization was 7.3 (3-20) and 8.8 days (3-35) for patients without drains and with drains, respectively. (p = 0.01). The Chi-square analysis was significant for evisceration Grade III and residual collection p = 0.036, OR not evaluable. Reoperation was not significant among both groups, p = 0.108 OR 6.3 (CI 95% 0.6-62.4). Conclusions There is a relationship between the non-use of drains and collections and evisceration in post-operative patients with open appendectomy, by complicated acute appendicitis.
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Addison P, Nauka PC, Fatakhova K, Amodu L, Kohn N, Rodriguez Rilo HL. Impact of Drain Placement and Duration on Outcomes After Pancreaticoduodenectomy: A National Surgical Quality Improvement Program Analysis. J Surg Res 2019; 243:100-107. [PMID: 31170551 DOI: 10.1016/j.jss.2019.04.071] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 04/18/2019] [Accepted: 04/25/2019] [Indexed: 01/26/2023]
Abstract
BACKGROUND The decisions to routinely place a drain after pancreaticoduodenectomy and how long to leave the drain remain controversial due to conflicting evidence and significant variations in clinical practice. This study aims to address those questions by using a large national database and a rigorous analytical model. METHODS The American College of Surgeons National Surgical Quality Improvement Program 2015-2016 Pancreatectomy Participant Use Data Files were used to identify patients who had undergone pancreaticoduodenectomy (n = 7583). Univariable and multivariable binomial regression analyses were performed to control for potential confounders and various preoperative risk factors. Cox regression with drain as a time-dependent covariate, conditional on having a drain placed, was used to examine the association between the drain remaining in place and morbidities. RESULTS Of 7583 patients, drains were placed in 6666 (87.9%). Drain placement decreased the risk of developing serious morbidity (relative risk [RR] 0.73, 95% confidence interval [CI] 0.65-0.82), overall morbidity (RR 0.79, 95% CI 0.72-0.87), and organ space surgical site infection (RR 0.72, 95% CI 0.61-0.85). Drain placement did not change the risk of developing a clinically relevant postoperative pancreatic fistula (RR 0.96, 95% CI 0.78-1.19). However, for those with drains placed, length of drainage was independently associated with serious morbidity (hazard ratio [HR] 3.06, 95% CI 2.65-3.53), overall morbidity (HR 2.48, 95% CI 2.20-2.80), and organ space surgical site infection (HR 1.47, 95% CI 1.23-1.74). CONCLUSIONS Routine drain placement following pancreaticoduodenectomy may decrease postoperative complications, including serious morbidity, overall morbidity, and organ space surgical site infections; however, length of drainage was associated with increased risk of the previously-named complications. These results support the routine placement and early removal of intraoperative surgical drains in pancreaticoduodenectomy.
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Affiliation(s)
- Poppy Addison
- Department of Surgery, Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York; Center for Diseases of the Pancreas, Northwell Health, Manhasset, New York
| | - Peter C Nauka
- Department of Surgery, Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York; Center for Diseases of the Pancreas, Northwell Health, Manhasset, New York
| | - Karina Fatakhova
- Center for Diseases of the Pancreas, Northwell Health, Manhasset, New York
| | - Leo Amodu
- Department of Surgery, Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York; Center for Diseases of the Pancreas, Northwell Health, Manhasset, New York
| | - Nina Kohn
- Biostatistics Unit, Feinstein Institute for Medical Research, Manhasset, New York
| | - Horacio L Rodriguez Rilo
- Department of Surgery, Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York; Center for Diseases of the Pancreas, Northwell Health, Manhasset, New York.
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Abstract
This article outlines the author's technique, and the concepts of Bidirectional, Absorbable, No-Drain Abdominoplasty (BAND-Abdominoplasty). The attendant advantages and disadvantages are reviewed in the context of a retrospective, 5-year, single surgeon series. Level of Evidence IV This journal requires that authors assign a level of evidence to each article. For a full description of these evidence-based medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Affiliation(s)
- Joseph B O'Connell
- Yale New Haven Health System, Bridgeport Hospital, 267 Grant St., Bridgeport, CT, 06610, USA.
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Hong KH, Pan JK, Yang WY, Luo MH, Xu SC, Liu J. Comparison between autologous blood transfusion drainage and closed-suction drainage/no drainage in total knee arthroplasty: a meta-analysis. BMC Musculoskelet Disord 2016; 17:142. [PMID: 27476506 PMCID: PMC4968028 DOI: 10.1186/s12891-016-0993-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Accepted: 03/22/2016] [Indexed: 11/10/2022] Open
Abstract
Background Autologous blood transfusion (ABT) drainage system is a new unwashed salvaged blood retransfusion system for total knee replacement (TKA). However, whether to use ABT drainage, closed-suction (CS) drainage or no drainage in TKA surgery remains controversial. This is the first meta-analysis to assess the clinical efficiency, safety and potential advantages regarding the use of ABT drains compared with closed-suction/no drainage. Methods PubMed, Embase, and the Cochrane Library were comprehensively searched in March 2015. Fifteen randomized controlled trials (RCTs) were identified and pooled for statistical analysis. The primary outcome evaluated was homologous blood transfusion rate. The secondary outcomes were post-operative haemoglobin on days 3–5, length of hospital stay and wound infections after TKA surgery. Results The pooled data included 1,721 patients and showed that patients in the ABT drainage group might benefit from lower blood transfusion rates (16.59 % and 37.47 %, OR: 0.28 [0.14, 0.55]; 13.05 % and 16.91 %, OR: 0.73 [0.47,1.13], respectively). Autologous blood transfusion drainage and closed-suction drainage/no drainage have similar clinical efficacy and safety with regard to post-operative haemoglobin on days 3–5, length of hospital stay and wound infections. Conclusions Autologous blood transfusion drainage offers a safe and efficient alternative to CS/no drainage with a lower blood transfusion rate. Future large-volume high-quality RCTs with extensive follow-up will affirm and update this system review. Electronic supplementary material The online version of this article (doi:10.1186/s12891-016-0993-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Kun-Hao Hong
- Department of Orthopedic Surgery, Guangdong Second Traditional Chinese Medicine Hospital, No. 60 Hengfu Road, Guangzhou, Guangdong, 510095, China
| | - Jian-Ke Pan
- Department of Orthopedic Surgery, Second School of Clinical Medicine, Guangzhou University of Chinese Medicine, No. 111 Dade Road,, Guangzhou, Guangdong, 510120, China
| | - Wei-Yi Yang
- Department of Orthopedic Surgery, Second School of Clinical Medicine, Guangzhou University of Chinese Medicine, No. 111 Dade Road,, Guangzhou, Guangdong, 510120, China
| | - Ming-Hui Luo
- Department of Orthopedic Surgery, Second School of Clinical Medicine, Guangzhou University of Chinese Medicine, No. 111 Dade Road,, Guangzhou, Guangdong, 510120, China
| | - Shu-Chai Xu
- Department of Orthopedic Surgery, Second School of Clinical Medicine, Guangzhou University of Chinese Medicine, No. 111 Dade Road,, Guangzhou, Guangdong, 510120, China
| | - Jun Liu
- Department of Orthopedic Surgery, Second School of Clinical Medicine, Guangzhou University of Chinese Medicine, No. 111 Dade Road,, Guangzhou, Guangdong, 510120, China.
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Andrew Glennie R, Dea N, Street JT. Dressings and drains in posterior spine surgery and their effect on wound complications. J Clin Neurosci 2015; 22:1081-7. [PMID: 25818940 DOI: 10.1016/j.jocn.2015.01.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2015] [Accepted: 01/24/2015] [Indexed: 10/23/2022]
Abstract
The purpose of this study was to systematically search, critically appraise and summarize published randomized control trials (RCT) and non-RCT examining the effect of drains and dressings on wound healing rates and complications in posterior spine surgery. The use of post-operative drains and the type of post-operative dressing is at the discretion of the treating surgeon with no available clinical guidelines. Drains will theoretically decrease incidence of post-operative hematoma and therefore, potentially decrease the risk of neurologic compromise when the neural elements have been exposed. Occlusive dressings have more recently been advocated, potentially maintaining a sterile barrier for longer time periods post-operatively. A systematic review of databases from 1969-2013 was undertaken. All papers examining drains in spine surgery and dressings in primary healing of surgical wounds were included. Revman (version 5.2; The Nordic Cochrane Centre, The Cochrane Collaboration, Oxford, UK) was used to test for overall treatment effect, clinical heterogeneity and risk of bias. Of the papers identified, 1348 examined post-operative drains in spine surgery and 979 wound dressings for primary wound healing of all surgical wounds. Seven studies were included for analysis for post-operative drains and 10 studies were analyzed for primary wound healing. The use of a post-operative drain did not influence healing rates and had no effect secondarily on infection (odds ratio [OR] 1.33; 95% confidence interval [CI] 0.76-2.30). We were not able to establish whether surgical drains prevent hematomas causing neurologic compromise. There was a slight advantage to using occlusive dressings versus non-occlusive dressings in wound healing (OR 2.09; 95% CI 1.44-3.02). Incisional vacuum dressings as both an occlusive barrier and superficial drainage system have shown promise for wounds at risk of dehiscence. There is a relatively high risk of bias in the methodology of many of the studies reviewed. We recommend favoring of occlusive dressings based on heterogeneous and potentially biased evidence. Drain use does not affect wound healing based on similar evidence. Incisional vacuum dressings have shown promise in managing potentially vulnerable wounds.
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Affiliation(s)
- R Andrew Glennie
- Dalhousie University, 1798 Summer Street, Halifax, Nova Scotia B3H 3A7, Canada; Combined Neurosurgical and Orthopedic Spine Program, University of British Columbia, Vancouver, BC, Canada.
| | - Nicolas Dea
- Combined Neurosurgical and Orthopedic Spine Program, University of British Columbia, Vancouver, BC, Canada
| | - John T Street
- Combined Neurosurgical and Orthopedic Spine Program, University of British Columbia, Vancouver, BC, Canada
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Barmparas G, Lamb AW, Lee D, Nguyen B, Eng J, Bloom MB, Ley EJ. Postoperative infection risk after splenectomy: A prospective cohort study. Int J Surg 2015; 17:10-4. [PMID: 25779211 DOI: 10.1016/j.ijsu.2015.03.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2015] [Revised: 02/17/2015] [Accepted: 03/03/2015] [Indexed: 10/23/2022]
Abstract
INTRODUCTION Splenectomy is associated with a life-long risk for overwhelming infections. The risk for early post-operative infectious complications following traumatic and elective splenectomy is, however, understudied. This investigation aimed to determine if splenectomy increases the risk for post-operative infections. METHODS This was a retrospective review of prospectively collected data on patients admitted to the surgical intensive care unit (SICU) between 1/2011 and 7/2013 investigating the risk for infectious complications in patients undergoing a splenectomy compared with those undergoing any other abdominal surgery. RESULTS During the 30-month study period, a total of 1884 patients were admitted to the SICU. Of those, 33 (2%) had a splenectomy and 493 (26%) had an abdominal surgery. The two groups were well balanced for age, APACHE IV score >20, and past medical history, including diabetes mellitus, cardiac history, renal failure or immunosuppression. Patients undergoing splenectomy were more likely to have sustained a traumatic injury (30% vs. 7%, p < 0.01). After adjustment, splenectomy was associated with increased risk for infectious complications (49% vs. 29%, Adjusted Odds Ratio (AOR) [95% CI]: 2.7 [1.3, 5.6], p = 0.01), including intra-abdominal abscess (9% vs. 3%, AOR [95% CI]: 4.3 [1.1, 16.2], p = 0.03). On a subgroup analysis, there were no differences between traumatic and elective splenectomy with regards to overall infectious complications (50% vs. 46%, p = 0.84), although, abdominal abscess developed only in those who had an elective splenectomy (0% vs. 12%, p = 0.55). CONCLUSION Splenectomy increases the risk for post-operative infectious complications. Further studies identifying strategies to decrease the associated morbidity are necessary.
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Affiliation(s)
- Galinos Barmparas
- Department of Surgery, Division of Acute Care Surgery and Surgical Critical Care, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Alexander W Lamb
- Department of Surgery, Division of Acute Care Surgery and Surgical Critical Care, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Debora Lee
- Department of Surgery, Division of Acute Care Surgery and Surgical Critical Care, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Brandon Nguyen
- Department of Surgery, Division of Acute Care Surgery and Surgical Critical Care, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Jamie Eng
- Department of Surgery, Division of Acute Care Surgery and Surgical Critical Care, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Matthew B Bloom
- Department of Surgery, Division of Acute Care Surgery and Surgical Critical Care, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Eric J Ley
- Department of Surgery, Division of Acute Care Surgery and Surgical Critical Care, Cedars-Sinai Medical Center, Los Angeles, CA, USA.
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Abstract
BACKGROUND Drainage systems and its role in sanitation related outbreaks are evident but still occluded once it has been installed. This current review evaluates if drainage systems can cause infections and thus be of clinical concern. METHOD A review of the literature was analyzed. Papers, guidelines, and quality management systems have been considered. RESULTS Adequate sanitation is fundamental and a prerequisite for safe life and productivity. In contrast, malfunctioning sanitation has been reported to cause outbreaks all over the world. In areas with no sanitation, diarrheal mortality is high and has been shown to decrease by 36% after interventions to improve sanitation. Often, infections are faeces associated and when present in wastewater and sewage sludge poses a high risk of infection upon exposure. Hence, there are working safety guidelines and in industries where infection reduction is essential strict quality assurance systems, i.e. HACCP (hazard analysis critical control points) and GMP (Good Manufacturing Practice) must be complied. Healthcare has recently taken interest in the HACCP system in their efforts to reduce healthcare associated infections as a response to increasing number of ineffective antibiotics and the threat of mortality rate like the pre-antibiotic era. The last few years have called for immediate action to contain the emergence of increasing resistant microorganisms. Resistance is obtained as a result of overuse and misuse of antibiotics in both healthcare and agriculture. Also, by the discharge of antibiotics from manufacturers, healthcare and society. One mechanism of development of novel resistant pathogens has been shown to be by effortless sharing of genetic mobile elements coding for resistance from microbes in the environment to human microbes. These pathogens have been sampled from the drainage systems. These were noticed owing to their possession of an unusual antibiotic resistance profile linking them to the outbreak. Often the cause of sanitation related outbreaks is due to inadequate sanitation and maintenance. However, in general these infections probably go unnoticed. CONCLUSION Drainage systems and its maintenance, if neglected, could pose a threat in both community and healthcare causing infections as well as emergence of multi-resistant bacteria that could cause unpredictable clinical manifestations.
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Fanous N, Salem I, Tawilé C, Bassas A. Absence of capsular contracture in 319 consecutive augmentation mammaplasties: Dependent drains as a possible factor. Can J Plast Surg 2014; 12:193-7. [PMID: 24115895 DOI: 10.1177/229255030401200401] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Capsular contracture is one of the major complications of augmentation mammaplasty. A review of 638 augmented breasts in 319 consecutive patients who underwent primary augmentation, with an average follow-up of 17.2 months and without a single case of capsular contracture of any degree to date, is presented, along with a discussion of the surgical technique and complications, and an analysis of measures used to prevent capsular contraction. Each patient received a pair of smooth saline-filled implants (Mentor, USA) placed in the submuscular space through an inframammary incision. In all operated breasts, many of the known measures commonly used for capsular contracture prevention were implemented. As well, a dependent drain was used as the final hemostatic step to prevent blood accumulation in the pocket. Leaving a dependent drain in the dissected pocket overnight, as one of the sequence of measures aimed at eliminating blood accumulation, is believed to be a contributing factor in capsular contracture prevention.
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Affiliation(s)
- Nabil Fanous
- L'Institut Canadien de Chirurgie Esthétique and Department of surgery, Centre Hospitalier de LaChine, Montreal, Quebec
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Papavramidis TS, Pliakos I, Michalopoulos N, Mistriotis G, Panteli N, Gkoutzamanis G, Papavramidis S. Classic clamp-and-tie total thyroidectomy for large goiters in the modern era: To drain or not to drain. World J Otorhinolaryngol 2014; 4:1-5. [DOI: 10.5319/wjo.v4.i1.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2013] [Revised: 09/18/2013] [Accepted: 12/11/2013] [Indexed: 02/06/2023] Open
Abstract
AIM: To evaluate the role of drains in clamp-and-tie total thyroidectomy (cTT) for large goiters.
METHODS: A hundred patients were randomized into group D (drains maintained for 24 h) and ND (no drains). We recorded epidemiological characteristics, thyroid pathology, hemostatic material, intraoperative events, operative time and difficulty, blood loss, biochemical and hematological data, postoperative vocal alteration and pain, discomfort, complications, blood in drains, and hospitalization.
RESULTS: The groups had comparable preoperative characteristics, pathology, intraoperative and postoperative data. Hemostatic material was used in all patients of group ND. Forty patients in group D and 9 in ND felt discomfort (P < 0.001).
CONCLUSION: Drains in cTT for large goiters give no advantage or disadvantage to the surgeon. The only “major disadvantage” is the discomfort for the patient. Inversely, drains probably influence surgeons’ serenity, especially when cTT is performed in nonspecialized departments.
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Gravante G, Overton J, Elshaer M, Sorge R, Kelkar A. Intraperitoneal drains during open appendicectomy for gangrenous and perforated appendicitis. World J Surg Proced 2013; 3:18-24. [DOI: 10.5412/wjsp.v3.i3.18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2013] [Revised: 11/06/2013] [Accepted: 11/21/2013] [Indexed: 02/06/2023] Open
Abstract
Intra-abdominal drains are still routinely used in the surgical management of gangrenous and perforated appendicitis. A systematic review was performed with the aim of establishing their influence on postoperative complications in such cases. A literature search was conducted using the search engines PubMed and Cochrance Central Register of Controlled Trials. Included were retrospective case-controlled and prospective randomized controlled trials on the use of drain for open appendicectomy in gangrenous and perforated appendicitis. Twelve articles were found that met the inclusion criteria. Intrabdominal abscesses, postoperative ileus, surgical site infections, fecal fistulas and burst abdomen had significant higher incidences in the drain vs non drain group (10.3%, 20.3%, 32.5%, 3.4% and 5.7% vs 4.7%, 8.5%, 16.2%, 0% and 0%, respectively). In most cases the risk was more than doubled in the drain group compared to the non-drain one. There were no significant differences among groups in terms of mortality while the results were underpowered to effectively evaluate wound dehiscence and adhesions. The use of intra-abdominal drains in the management of gangrenous and perforated appendicitis by open appendicectomy is associated with an increased rate of common postoperative complications.
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Sampathraju S, Rodrigues G. Seroma formation after mastectomy: pathogenesis and prevention. Indian J Surg Oncol 2011; 1:328-33. [PMID: 22693384 DOI: 10.1007/s13193-011-0067-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Accepted: 02/23/2011] [Indexed: 10/18/2022] Open
Abstract
Post mastectomy seroma remains an unresolved quandary as the risk factors for its formation have still not been identified. Seromas of the axillary space following breast surgery can lead to significant morbidity and delay in the initiation of adjuvant therapy. Various techniques and their modifications have been practiced and published in English literature, but there seems to be no consensus. In this article, all aspects of seroma formation from pathogenesis to prevention including drug therapies have been discussed.
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Affiliation(s)
- Sanjitha Sampathraju
- Department of General Surgery, Kasturba Medical College, Manipal University, Manipal, 576 104 Karnataka India
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Murray JD, Elwood ET, Jones GE, Barrick R, Feng J. Decreasing expander breast infection: A new drain care protocol. Can J Plast Surg 2009; 17:17-21. [PMID: 20190908 PMCID: PMC2705308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
BACKGROUND Risk factors for expander reconstruction infection are well known. However, drain use as a risk factor for the development of infection is unclear. OBJECTIVE To review a simple method for drain use to help reduce rates of infection in expander breast reconstruction. METHODS Two hundred consecutive single-surgeon (JDM) immediate first-stage expander breast reconstructions were retrospectively reviewed. The records were reviewed for history and physical examination, intra-operative technique, perioperative management, adjuvant therapy, and outcome with respect to expander infection necessitating premature explantation within the first eight weeks. Infection was defined on clinical basis, with or without culture positivity. All expanders (Mentor, USA) were the same model (textured, port-integrated and biodimensional). Two consecutive series of reconstructions were then created. The first series included 177 reconstructions while the second series included 23 reconstructions. Unlike the first series, the second series introduced a protocol in which all reconstructions received mupirocin 2% cream to the drain sites and all drains were removed at the end of the first week. Additionally, in the second series, all expanders were secluded from direct in vivo contact with the closed suction drain either by the use of an intervening Alloderm sling (LifeCell Corporation, USA, 15 of 23 breasts) or by subdermally tunnelling the drain superficial to an adequate fatty subcutaneous layer (eight of 23 breasts). RESULTS Patients who developed infection in the first series and all patients in the second series shared statistically the same level of aggregate risk factors (P=0.531). The infection rate (5.65%, 10 infections in 177 breasts) in the first series was statistically greater than in the second series (0%, 0 in 23 breasts, P=0.001). CONCLUSIONS The present study found that percutaneous closed suction drains do serve as an increased risk for expander infection. However, early results indicate that in vivo protection of the expander with Alloderm or subdermal tunnelling, topical antibiotic ointment use and early drain removal may significantly reduce expander infection.
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Affiliation(s)
- John D Murray
- Division of Plastic Surgery, University of Illinois College of Medicine at Peoria
- Illinois Plastic Surgery
| | - Eric T Elwood
- Division of Plastic Surgery, University of Illinois College of Medicine at Peoria
- Illinois Plastic Surgery
| | - Glyn E Jones
- Division of Plastic Surgery, University of Illinois College of Medicine at Peoria
- Illinois Plastic Surgery
| | | | - Jack Feng
- Department of Industrial and Manufacturing Engineering and Technology, Bradley University, Peoria, Illinois, USA Institution at which the work originated: University of Illinois College of Medicine at Peoria
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