scholarly journals Postdischarge antibiotic use for prophylaxis following spinal fusion

2020 ◽  
Vol 41 (7) ◽  
pp. 789-798
Author(s):  
David K. Warren ◽  
Katelin B. Nickel ◽  
Jennifer H. Han ◽  
Pam Tolomeo ◽  
Christopher J. Hostler ◽  
...  
Keyword(s):  
Spinal Fusion ◽  
Linear Models ◽  
Prophylactic Antibiotic ◽  
Antibiotic Use ◽  
Prophylactic Antibiotics ◽  
Factors Associated ◽  
American Society ◽  
American Society Of Anesthesiologists ◽  
Surgical Admission ◽  
Significant Factors

AbstractObjective:Despite recommendations to discontinue prophylactic antibiotics after incision closure or <24 hours after surgery, prophylactic antibiotics are continued after discharge by some clinicians. The objective of this study was to determine the prevalence and factors associated with postdischarge prophylactic antibiotic use after spinal fusion.Design:Multicenter retrospective cohort study.Patients:This study included patients aged ≥18 years undergoing spinal fusion or refusion between July 2011 and June 2015 at 3 sites. Patients with an infection during the surgical admission were excluded.Methods:Prophylactic antibiotics were identified at discharge. Factors associated with postdischarge prophylactic antibiotic use were identified using hierarchical generalized linear models.Results:In total, 8,652 spinal fusion admissions were included. Antibiotics were prescribed at discharge in 289 admissions (3.3%). The most commonly prescribed antibiotics were trimethoprim/sulfamethoxazole (22.1%), cephalexin (18.8%), and ciprofloxacin (17.1%). Adjusted for study site, significant factors associated with prophylactic discharge antibiotics included American Society of Anesthesiologists (ASA) class ≥3 (odds ratio [OR], 1.31; 95% CI, 1.00–1.70), lymphoma (OR, 2.57; 95% CI, 1.11–5.98), solid tumor (OR, 3.63; 95% CI, 1.62–8.14), morbid obesity (OR, 1.64; 95% CI, 1.09–2.47), paralysis (OR, 2.38; 95% CI, 1.30–4.37), hematoma/seroma (OR, 2.93; 95% CI, 1.17–7.33), thoracic surgery (OR, 1.39; 95% CI, 1.01–1.93), longer length of stay, and intraoperative antibiotics.Conclusions:Postdischarge prophylactic antibiotics were uncommon after spinal fusion. Patient and perioperative factors were associated with continuation of prophylactic antibiotics after hospital discharge.

Postdischarge prophylactic antibiotics following mastectomy with and without breast reconstruction

2021 ◽  
pp. 1-7
Author(s):  
David K. Warren ◽  
Kate M. Peacock ◽  
Katelin B. Nickel ◽  
Victoria J. Fraser ◽  
Margaret A. Olsen ◽  
...  
Keyword(s):  
Linear Models ◽  
Prophylactic Antibiotic ◽  
Antibiotic Use ◽  
Prophylactic Antibiotics ◽  
Adjusted Relative Risk ◽  
Immediate Reconstruction ◽  
Antibiotic Overuse ◽  
Factors Associated ◽  
Numbers Needed To Treat ◽  
The Impact

Abstract Background: Prophylactic antibiotics are commonly prescribed at discharge for mastectomy, despite guidelines recommending against this practice. We investigated factors associated with postdischarge prophylactic antibiotic use after mastectomy with and without immediate reconstruction and the impact on surgical-site infection (SSI). Study design: We studied a cohort of women aged 18–64 years undergoing mastectomy between January 1, 2010, and June 30, 2015, using the MarketScan commercial database. Patients with nonsurgical perioperative infections were excluded. Postdischarge oral antibiotics were identified from outpatient drug claims. SSI was defined using International Classification of Diseases, Ninth Edition, Clinical Modification (ICD-9-CM) diagnosis codes. Generalized linear models were used to determine factors associated with postdischarge prophylactic antibiotic use and SSI. Results: The cohort included 38,793 procedures; 24,818 (64%) with immediate reconstruction. Prophylactic antibiotics were prescribed after discharge after 2,688 mastectomy-only procedures (19.2%) and 17,807 mastectomies with immediate reconstruction (71.8%). The 90-day incidence of SSI was 3.5% after mastectomy only and 8.8% after mastectomy with immediate reconstruction. Antibiotics with anti–methicillin-sensitive Staphylococcus aureus (MSSA) activity were associated with decreased SSI risk after mastectomy only (adjusted relative risk [aRR], 0.74; 95% confidence interval [CI], 0.55–0.99) and mastectomy with immediate reconstruction (aRR, 0.80; 95% CI, 0.73–0.88), respectively. The numbers needed to treat to prevent 1 additional SSI were 107 and 48, respectively. Conclusions: Postdischarge prophylactic antibiotics were common after mastectomy. Anti-MSSA antibiotics were associated with decreased risk of SSI for patients who had mastectomy only and those who had mastectomy with immediate reconstruction. The high numbers needed to treat suggest that potential benefits of postdischarge antibiotics should be weighed against potential harms associated with antibiotic overuse.

scholarly journals The Prevalence and Factors Associated with Prophylactic Antibiotic Use during Delivery: A Hospital-Based Retrospective Study in Palembang, Indonesia

Antibiotics ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1004
Author(s):  
Ariesti Karmila ◽  
Mohammad Zulkarnain ◽  
Abarham Martadiansyah ◽  
Putri Mirani ◽  
Nuswil Bernolian ◽  
...  
Keyword(s):  
Maternal Education ◽  
Prophylactic Antibiotic ◽  
Antibiotic Use ◽  
Prophylactic Antibiotics ◽  
Adherence To Guidelines ◽  
Middle Income ◽  
Antibiotic Overuse ◽  
Factors Associated ◽  
Middle Income Countries ◽  
Membrane Rupture

Prophylactic antibiotic usage during delivery is a common practice worldwide, especially in low- to middle-income countries. Guidelines have been published to reduce antibiotic overuse; however, data describing the use of prophylactic antibiotics and clinician adherence to guidelines in low- to middle-income countries remain limited. This study aimed to describe the prevalence of prophylactic antibiotic use, factors associated with its use, and clinician adherence to guidelines. A retrospective review was conducted for all deliveries from 1 January 2016 to 31 December 2018 at a tertiary level hospital in Indonesia. The prevalence of prophylactic antibiotic use during delivery was 47.1%. Maternal education level, Ob/Gyn specialist-led delivery, a history of multiple abortions, C-section, premature membrane rupture, and antepartum hemorrhage were independently associated with prophylactic antibiotic use. Clinician adherence to the guidelines was 68.9%. Adherence to guidelines was the lowest in conditions where the patient had only one indication for prophylactic antibiotics (aOR 0.36, 95% CI 0.24–0.54). The findings showed that the prevalence of prophylactic antibiotic use during delivery was moderate to high. Adherence to local guidelines was moderate. Updating the local prescribing guidelines may improve clinician adherence.

scholarly journals Risk Factors and Indications for 30-Day Readmission After Primary Surgery for Epithelial Ovarian Cancer

2015 ◽  
Vol 25 (2) ◽  
pp. 193-202 ◽  
Author(s):  
Mariam AlHilli ◽  
Carrie Langstraat ◽  
Christine Tran ◽  
Janice Martin ◽  
Amy Weaver ◽  
...  
Keyword(s):  
Risk Factors ◽  
Ovarian Cancer ◽  
Postoperative Complications ◽  
Epithelial Ovarian Cancer ◽  
Odds Ratio ◽  
Residual Disease ◽  
Factors Associated ◽  
Primary Surgery ◽  
American Society ◽  
American Society Of Anesthesiologists

BackgroundTo identify patients at risk for postoperative morbidities, we evaluated indications and factors associated with 30-day readmission after epithelial ovarian cancer surgery.MethodsPatients undergoing primary surgery for epithelial ovarian cancer between January 2, 2003, and December 29, 2008, were evaluated. Univariable and multivariable logistic regression models were fit to identify factors associated with 30-day readmission. A parsimonious multivariable model was identified using backward and stepwise variable selection.ResultsIn total, 324 (60.2%) patients were stage III and 91 (16.9%) were stage IV. Of all 538 eligible patients, 104 (19.3%) were readmitted within 30 days. Cytoreduction to no residual disease was achieved in 300 (55.8%) patients, and 167 (31.0%) had measurable disease (≤1 cm residual disease). The most common indications for readmission were surgical site infection (SSI; 21.2%), pleural effusion/ascites management (14.4%), and thromboembolic events (12.5%). Multivariate analysis identified American Society of Anesthesiologists score of 3 or higher (odds ratio, 1.85; 95% confidence interval, 1.18–2.89;P= 0.007), ascites [1.76 (1.11–2.81);P= 0.02], and postoperative complications during initial admission [grade 3–5 vs none, 2.47 (1.19–5.16); grade 1 vs none, 2.19 (0.98–4.85); grade 2 vs none, 1.28 (0.74–2.21);P= 0.048] to be independently associated with 30-day readmission (c-index = 0.625). Chronic obstructive pulmonary disease was the sole predictor of readmission for SSI (odds ratio, 3.92; 95% confidence interval, 1.07–4.33;P= 0.04).ConclusionsClinically significant risk factors for 30-day readmission include American Society of Anesthesiologists score of 3 or higher, ascites and postoperative complications at initial admission. The SSI and pleural effusions/ascites are common indications for readmission. Systems can be developed to predict patients needing outpatient management, improve care, and reduce costs.

scholarly journals Survey of Surgeons Regarding Prophylactic Antibiotic Use in Inguinal Hernia Repair

2018 ◽  
Vol 107 (3) ◽  
pp. 208-211 ◽  
Author(s):  
A. P. MacCormick ◽  
J. A. Akoh
Keyword(s):  
Surgical Site Infection ◽  
Perceived Risk ◽  
Prophylactic Antibiotic ◽  
Antibiotic Use ◽  
Prophylactic Antibiotics ◽  
Site Infection ◽  
Hernia Surgery ◽  
Trust Network ◽  
Surgical Trainees ◽  
Infected Mesh

Purpose: The use of prophylactic antibiotics in the mesh repair of inguinal hernias remains controversial. The aim of this study was to determine the perception of surgeons about surgical site infection and how this affects their clinical practice. Methods: A SurveyMonkey of general surgeons and senior surgical trainees was conducted via the local trust network and the questionnaire was displayed on the website of the Association of Surgeons of Great Britain and Ireland and Association of Surgeons in Training. Results: Eighty-one responses were received from surgeons who perform an average of 75 hernia repairs per year – the majority by open technique. Thirty-six (44.4%) used routine antibiotic prophylaxis, 40 (49.4%) selectively, and five (6.2%) not at all as the five surgeons who did not use antibiotics perceived their surgical site infection rate to be <1% and have never removed an infected mesh from a hernia wound. There was no clear difference between those who use prophylactic antibiotics routinely or selectively as the experience of mesh explantation is similar (56% versus 55% had 2–10 meshes removed respectively). Seventy-seven (95%) of surgeons felt a new specific set of guidelines was required. Conclusion: This study highlights the fact that in the absence of clear guidelines, most surgeons base their use of prophylactic antibiotics on their perceived risk or experience of surgical site infection. There is a strong need for a new set of guidelines to address the use of prophylactic antibiotics in groin hernia surgery.

Infection risk in endovascular neurointerventions: a comparative analysis of 549 cases with and without prophylactic antibiotic use

2020 ◽  
Vol 132 (3) ◽  
pp. 797-801 ◽  
Author(s):  
Jan-Karl Burkhardt ◽  
Omar Tanweer ◽  
Miguel Litao ◽  
Pankaj Sharma ◽  
Eytan Raz ◽  
...  
Keyword(s):  
Antibiotic Prophylaxis ◽  
Medical Center ◽  
Prophylactic Antibiotic ◽  
Systemic Infection ◽  
Antibiotic Use ◽  
Infection Risk ◽  
Prophylactic Antibiotics ◽  
Oral Antibiotic ◽  
Systematic Analysis ◽  
Significant Difference

OBJECTIVEA systematic analysis on the utility of prophylactic antibiotics for neuroendovascular procedures has not been performed. At the authors’ institution there is a unique setup to address this question, with some attending physicians using prophylactic antibiotics (cefazolin or vancomycin) for all of their neurointerventions while others generally do not.METHODSThe authors performed a retrospective review of the last 549 neurointerventional procedures in 484 patients at Tisch Hospital, NYU Langone Medical Center. Clinical and radiological data were collected for analysis, including presence of prophylactic antibiotic use, local or systemic infection, infection laboratory values, and treatment. Overall, 306 aneurysms, 117 arteriovenous malformations/arteriovenous fistulas, 86 tumors, and 40 vessel stenosis/dissections were treated with coiling (n = 109), Pipeline embolization device (n = 197), embolization (n = 203), or stenting (n = 40).RESULTSAntibiotic prophylaxis was used in 265 of 549 cases (48%). There was no significant difference between patients with or without antibiotic prophylaxis in sex (p = 0.48), presence of multiple interventions (p = 0.67), diseases treated (p = 0.11), or intervention device placed (p = 0.55). The mean age of patients in the antibiotic prophylaxis group (53.4 years) was significantly lower than that of the patients without prophylaxis (57.1 years; p = 0.014). Two mild local groin infections (0.36%) and no systemic infections (0%) were identified in this cohort, with one case in each group (1/265 [0.38%] vs 1/284 [0.35%]). Both patients recovered completely with local drainage (n = 1) and oral antibiotic treatment (n = 1).CONCLUSIONSThe risk of infection associated with endovascular neurointerventions with or without prophylactic antibiotic use was very low in this cohort. The data suggest that the routine use of antibiotic prophylaxis seems unnecessary and that to prevent antibiotic resistance and reduce costs antibiotic prophylaxis should be reserved for selected patients deemed to be at increased infection risk.

Does the Type of Surgical Technique and the Use of Prophylactic Antibiotics Affect the Clinical Results in Symptomatic Ingrown Toenail Patients?

2021 ◽  
pp. 153473462110436
Author(s):  
Serdar Sargin ◽  
Anil Gulcu ◽  
Ahmet Aslan
Keyword(s):  
Postoperative Morbidity ◽  
Prophylactic Antibiotic ◽  
Antibiotic Use ◽  
Clinical Results ◽  
Prophylactic Antibiotics ◽  
Recurrence Rates ◽  
Ingrown Toenail ◽  
Significant Difference ◽  
Ingrown Toenails ◽  
Positive Effect

Ingrown toenails are a common reason for referral to orthopedics and podiatry clinics. Recurrence and infection are common complications in ingrown toenail surgery. This study investigates the effect of an electrocautery matrixectomy on the recurrence and clinical outcomes in the Winograd technique applied in ingrown toenail surgery and whether prophylactic antibiotic use is necessary for these surgeries. One hundred forty-three patients who underwent surgery for ingrown toenails were analyzed retrospectively. Eighty-two patients underwent the Winograd procedure with electrocautery matrixectomy, whereas 61 patients underwent the Winograd procedure. While 78 patients were given prophylactic antibiotics, 65 patients were not. Patient satisfaction was evaluated with a surgical satisfaction questionnaire (SSQ). A visual analog score was used to evaluate the pain. Recurrence was observed in 3 toenails in the Winograd and electrocautery groups, while recurrence was observed in 9 toenails in the Winograd group ( P = .018). In both groups, there was no statistically significant difference between the infection rates between patients who took antibiotics and those who did not ( P > .05). There was no statistically significant difference between the groups in terms of SSQ scores ( P > .05). It was observed that the surgery performed had a positive effect on pain, and this effect was statistically highly significant in both groups ( P < .05). The outcomes of the present study suggest that the addition of an electrocautery matrixectomy to the Winograd technique in the surgical treatment of symptomatic Ingrown toenails may decrease recurrence rates. Additionally, this study showed that oral antibiotics, when used in addition to Ingrown toenail surgery, do not reduce postoperative morbidity.

scholarly journals Subtle Microbiome Manipulation Using Probiotics Reduces Antibiotic-Associated Mortality in Fish

mSystems ◽  
2017 ◽  
Vol 2 (6) ◽  
Author(s):  
Victor Schmidt ◽  
Marta Gomez-Chiarri ◽  
Chelsea Roy ◽  
Katherine Smith ◽  
Linda Amaral-Zettler
Keyword(s):  
Disease Susceptibility ◽  
Prophylactic Antibiotic ◽  
Antibiotic Use ◽  
Ornamental Fish ◽  
Prophylactic Antibiotics ◽  
Fish Farms ◽  
Short Term ◽  
Content Type ◽  
Pathogen Control ◽  
Negative Impacts

ABSTRACT Prophylactic antibiotics are widespread in the aquaculture industry and are used where vaccination is impossible or overly expensive. If antibiotics impact fish as they do mice and humans, prophylactic administrations in aquaculture and ornamental fish farms may increase downstream disease susceptibility in target hosts, despite short-term pathogen control benefits. Recent research has suggested that their use exacerbates bacterial outbreaks by creating sterile, nutrient-rich environments for invading pathogens to colonize and could help to explain rising economic costs of bacterial outbreaks in aquaculture. Our findings suggest a long-term cost of prophylactic antibiotic use and demonstrate a probiotic-based solution that does not rely on full microbiome community transplantation. Prophylactic antibiotics in the aquaculture and ornamental fish industry are intended to prevent the negative impacts of disease outbreaks. Research in mice and humans suggests that antibiotics may disturb microbiome communities and decrease microbiome-mediated disease resistance, also known as “colonization resistance.” If antibiotics impact fish as they do mice and humans, prophylactic administrations on aquaculture farms may increase downstream disease susceptibility in target hosts, despite short-term pathogen control benefits. We tested the effects of antibiotics on mortality after a pathogen challenge in the Poecilia sphenops black molly and subsequently tested if probiotic inoculations could reverse any antibiotic-induced losses of disease resistance. We found that antibiotic treatment significantly increased fish mortality. We further found that our two candidate probiotic bacterial species, Phaeobacter inhibens S4Sm and Bacillus pumilus RI06-95Sm, were able to colonize black molly microbiomes and reverse the negative impacts of antibiotics. Despite the positive impact on survival, probiotic treatment did not influence overall microbiome community structure or diversity. Our results suggest that subtle manipulations of microbiome composition can have dramatic impacts on host phenotype. The results of this study have implications for how antibiotic-treated microbiomes can be restored and suggest that small-scale additions may be as effective as wholesale transplants. IMPORTANCE Prophylactic antibiotics are widespread in the aquaculture industry and are used where vaccination is impossible or overly expensive. If antibiotics impact fish as they do mice and humans, prophylactic administrations in aquaculture and ornamental fish farms may increase downstream disease susceptibility in target hosts, despite short-term pathogen control benefits. Recent research has suggested that their use exacerbates bacterial outbreaks by creating sterile, nutrient-rich environments for invading pathogens to colonize and could help to explain rising economic costs of bacterial outbreaks in aquaculture. Our findings suggest a long-term cost of prophylactic antibiotic use and demonstrate a probiotic-based solution that does not rely on full microbiome community transplantation.

Colonoscopy in Automated Peritoneal Dialysis Patients: Value of Prophylactic Antibiotics: A Prospective Study on a Single Antibiotic

2017 ◽  
Vol 40 (10) ◽  
pp. 550-557 ◽  
Author(s):  
Abdullah K. Al-Hwiesh ◽  
Ibrahiem S. Abdul-Rahman ◽  
Mohammad A. Hussameldeen ◽  
Nadia Al-Audah ◽  
Abdalla Abdelrahman ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Peritoneal Dialysis ◽  
Randomized Study ◽  
Multiple Logistic Regression Analysis ◽  
Prophylactic Antibiotic ◽  
Colonic Polyps ◽  
Antibiotic Use ◽  
Prophylactic Antibiotics ◽  
Automated Peritoneal Dialysis ◽  
Group B

Objective To evaluate the need for prophylactic antibiotics in automated peritoneal dialysis (APD) patients undergoing flexible colonoscopy. Patients and Methods A total of 93 patients on automated peritoneal dialysis (APD) undergoing diagnostic colonoscopy were enrolled in a prospective, randomized study. Patients were randomized into 2 age- and sex-matched groups; group A (46 patients) with intraperitoneal (IP) ceftazidime prior to colonoscopy and group B (47 patients) without prophylactic antibiotics. The relations between peritonitis and different parameters were analyzed. Results: Of all colonoscopies, 60.2% showed normal findings, 17.2% with colonic polyps at different sites, 12.9% with angiodysplastic-like lesions, 5.4% with colonic ulcer(s), 3.2% with diverticulae without diverticulitis and 1.1% had transverse colon stricture. Post-colonoscopy peritonitis was documented in 3 (6.5%) and 4 (8.5%) patients in groups A and B, respectively (p = 0.2742); the causative organisms were mainly gram negative bacteria. Polypectomy was not associated with increased peritonitis episodes. By multiple logistic regression analysis, diabetes mellitus was the only independent variable that entered into the best predictive equation over the development of post-colonoscopy peritonitis but not antibiotic use. Conclusions The relation between prophylactic antibiotic use prior to colonoscopy in APD patients and the risk of peritonitis was lacking. Only diabetes mellitus appears to be of significance. Polypectomy did not increase peritonitis episodes.

scholarly journals Discordance to ASHP Therapeutic Guidelines Increases the Risk of Surgical Site Infection

2021 ◽  
Vol 14 (11) ◽  
pp. 1088
Author(s):  
Fauna Herawati ◽  
Rika Yulia ◽  
Heru Wiyono ◽  
Firdaus Kabiru Massey ◽  
Nurlina Muliani ◽  
...  
Keyword(s):  
Surgical Site Infection ◽  
Surgical Procedures ◽  
Antibiotic Use ◽  
Prophylactic Antibiotics ◽  
Surgical Patients ◽  
Defined Daily Dose ◽  
Site Infection ◽  
Therapeutic Guidelines ◽  
Bed Days ◽  
American Society

Clean surgery without contamination does not require prophylactic antibiotics, but there are high-risk surgical procedures that may cause infection and/or involve vital organs such as the heart, brain, and lungs, and these indeed require the use of antibiotics. This study aimed to determine the quantity of antibiotic use based on the defined daily dose (DDD) per 100 bed days and the quality of antibiotic use based on the percentage of concordance with The American Society of Health-System Pharmacists (ASHP) therapeutic guidelines (i.e., route of administration, time of administration, selection, dose, and duration). This includes the profiles of surgical site infection (SSI) in surgical patients from January through June 2019. The study subjects were 487 surgical patients from two hospitals who met the inclusion criteria. There were 322 patients out of 487 patients who had a clean surgical procedure. Ceftriaxone (J01DD04) was the most used antibiotic, with a total DDD/100 bed days value in hospitals A and B, respectively: pre-surgery: 14.71, 77.65, during surgery: 22.57, 87.31, and postsurgery: 38.34, 93.65. In addition, 35% of antibiotics were given more than 120 min before incision. The lowest concordance to ASHP therapeutic guideline in hospital A (17.6%) and B (1.9%) was antibiotic selection. Two patients experienced SSI with bacterial growths of Proteus spp., Staphylococcus aureus, Staphylococcus epidermidis, and Escherichia coli. The usage of prophylactic antibiotics for surgical procedures was high and varied between hospitals. Hospital B had significantly lower concordance to antibiotic therapeutic guidelines, resulting to a higher infection rate, compared with hospital A. ASHP adherence components were then further investigated, after which antibiotic dosing interval and injection time was found to be a significant predictor for positive bacterial growth based on logit–logistic regression. Further interventions and strategies to implement antibiotic stewardship is needed to improve antibiotic prescriptions and their use.

scholarly journals Analysis of urgent/emergent conversions from monitored anesthesia care to general anesthesia with airway instrumentation

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Sang Kim ◽  
Brian A. Chang ◽  
Amreen Rahman ◽  
Hung-Mo Lin ◽  
Samuel DeMaria ◽  
...  
Keyword(s):  
Risk Factors ◽  
General Anesthesia ◽  
Mount Sinai Hospital ◽  
Anesthesia Care ◽  
Monitored Anesthesia Care ◽  
Surgical Specialty ◽  
Factors Associated ◽  
Physical Status Classification ◽  
American Society ◽  
American Society Of Anesthesiologists

Abstract Background Monitored Anesthesia Care (MAC) is an anesthetic service involving the titration of sedatives/analgesics to achieve varying levels of sedation while avoiding general anesthesia (GA) and airway instrumentation. The goal of our study was to determine the overall incidence of conversion from MAC to general anesthesia with airway instrumentation and elucidate reasons and risk factors for conversion. Methods In this retrospective observational study, all non-obstetric adult patients who received MAC from July 2002 to July 2015 at Mount Sinai Hospital were electronically screened for inclusion via a clinical database. Patient, procedure, anesthetic, and practitioner data were all collected and analyzed to generate descriptive analyses. Subsequent univariate and multivariate analyses were used to identify specific risk factors associated with conversion to GA. Results Overall, 0.50% (1097/219,061) of MAC cases were converted to GA. Approximately half of conversions were due to the patient’s “intolerance” of MAC (with or without failed regional anesthesia), while the other half were due to physiologic derangements. Body mass index, male sex, American Society of Anesthesiologists Physical Status Classification, anesthesia team composition, and surgical specialty were all associated with risk of conversion to GA. Conclusions This is one of the first and largest retrospective studies aimed at identifying reasons and risk factors associated with the conversion of MAC to GA. These findings may be used to help better anticipate or prevent these events.

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