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BACKGROUND: Body mass index (BMI) thresholds are utilized as a preoperative optimization strategy for obese patients prior to elective abdominal wall hernia repair. The objectives of this study were to determine the proportion of patients at our institution who ultimately underwent hernia repair after initial deferral due to BMI and to evaluate outcomes of those who required emergent repair during the deferral period. METHODS: A retrospective review was performed from 2016 to 2018 to identify all patients with abdominal wall hernias who were deferred surgery due to BMI. Patient characteristics, hernia type, change in BMI, progression to surgery, acuity of surgery (elective or emergent), and postoperative outcomes were examined. RESULTS: 200 patients were deferred hernia repair due to BMI. Of these, 150 (75%) did not undergo repair over a mean period of 27 months. The remaining 50 patients ultimately underwent repair, 36 of which (72%) were elective and 14 (28%) emergent. The mean initial BMI of the elective group was 35.3 ± 1.8, compared to 39.1 ± 5.3 in the no surgery group and 40.6 ± 8.2 in the emergent group (P < .01). While the elective group lost weight before surgery, the other groups did not. Patients who required emergent surgery had worse outcomes than those repaired electively. CONCLUSIONS: Preoperative weight loss is unsuccessful in most obese patients presenting for abdominal wall hernia repair at our institution. Patients who required emergent hernia repair had worse outcomes than those who underwent elective repair. Our institution's BMI threshold is a failed optimization strategy that needs to be reconsidered.
Assuntos
Parede Abdominal , Hérnia Ventral , Humanos , Herniorrafia , Índice de Massa Corporal , Provedores de Redes de Segurança , Hérnia Ventral/cirurgia , Obesidade/complicações , Obesidade/cirurgia , Estudos Retrospectivos , Parede Abdominal/cirurgiaRESUMO
Lung nodule and ground-glass opacity localization for diagnostic and therapeutic purposes is often a challenge for thoracic surgeons. While there are several adjuncts and techniques in the surgeon's armamentarium that can be helpful, accurate localization persists as a problem without a perfect solution. The last several decades have seen tremendous improvement in our ability to perform major operations with minimally invasive procedures and resulting lower morbidity. However, technological advances have not been as widely realized for lung nodule localization to complement minimally invasive surgery. This review describes the latest advances in lung nodule localization technology while also demonstrating that more efforts in this area are needed.
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Esophagectomy and colon interposition in the adult patient, either for primary alimentary reconstruction or as a secondary replacement after initial resection/reconstruction for malignant or benign disease, remains a valuable tool in the thoracic surgeon's armamentarium. It is important for surgeons to remain versed in the complexities of the operation, including preoperative preparation and decision making, operative procedural and technical variations, and recognition and timely treatment of postoperative complications. In this article, we present technical details of the procedure, a review of selected published studies, long-term results, and indications and outcomes for revisional surgery.
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Neoplasias Esofágicas , Midazolam , Adulto , Humanos , Colo/cirurgia , Colo/patologia , Neoplasias Esofágicas/cirurgia , Neoplasias Esofágicas/patologia , Esofagectomia/métodos , Complicações Pós-Operatórias/cirurgiaRESUMO
BACKGROUND: Gastric electrical stimulation (GES) and laparoscopic gastrectomy (LG) are known therapeutic options for medically refractory gastroparesis (MRG) although there are limited data comparing their outcomes. We aim to compare clinical outcomes between patients undergoing GES vs upfront LG for the treatment of MRG while examining factors associated with GES failure and conversion to LG. METHODS: We retrospectively analyzed 181 consecutive patients who underwent GES or LG for MRG at our institution from January 2003 to December 2017. Data collection consisted of chart review and follow-up telephone survey. Statistical analysis utilized Chi-squared, ANOVA, and multivariable logistic regression. RESULTS: Overall, 130 (72%) patients underwent GES and 51 (28%) LG as primary intervention. GES patients were more likely to have diabetic gastroparesis (GES 67% vs LG 39%, p < 0.001), while primary LG patients were more likely to have post-surgical gastroparesis (GES 5% vs LG 43%, p < 0.001). Postoperatively, primary LG patients had higher rates of major in-hospital morbidity events (GES 5% vs LG 18%, p = 0.017) and longer hospital stays (GES 3 vs LG 9 days, p < 0.001). However, over a mean 35-month follow-up period, there were no differences in the rates of major morbidity, readmissions, or mortality. Multivariable regression analysis revealed patients undergoing GES as a primary intervention were less likely to report improvement in symptoms on follow-up compared to primary LG patients OR 0.160 (95% CI 0.048-0.532). Additionally, patients who converted to LG from GES were more likely to have post-surgical gastroparesis as the primary etiology. CONCLUSION: GES as a first-line surgical treatment of MRG was associated with worse outcomes compared to LG. Post-surgical etiology was associated with an increased likelihood of GES failure, and in such patients, upfront gastrectomy may be a superior alternative to GES. Further studies are needed to determine patient selection for operative treatment of MRG.
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Terapia por Estimulação Elétrica , Gastroparesia , Gastrectomia/efeitos adversos , Gastroparesia/etiologia , Gastroparesia/cirurgia , Humanos , Estudos Retrospectivos , Resultado do TratamentoRESUMO
BACKGROUND: The association between preoperative weight loss and bariatric surgery outcomes remains unclear. We explored the utility of preoperative weight loss as a predictor of postoperative weight loss success. Additionally, we examined the association of preoperative weight loss with perioperative complication rates. METHODS: Retrospective chart review of patients who underwent primary sleeve gastrectomy or primary Roux-en-Y gastric bypass for weight loss at a single institution between January 2003 and November 2017. Additional follow-up was obtained by a postoperative standardized patient questionnaire. Statistical analysis consisted of bivariate and multivariate logistic regression analysis. RESULTS: Our study included 427 patients. Majority were female (n = 313, 73.3%) and underwent sleeve gastrectomy (n = 261, 61.1%). Average age was 45.6 years, and average follow-up was 6.3 years. Greater preoperative weight loss was associated with decreased length of stay (1.8 vs 1.3 days) in patients who underwent sleeve gastrectomy. Multivariable regression analysis revealed that preoperative weight loss was not associated with postoperative weight loss. CONCLUSIONS: Preoperative weight loss is not predictive of postoperative weight loss success after bariatric surgery. Greater preoperative weight loss was associated with a mild decreased in length of stay but was not associated with a reduction in operative time, overall complication rates, ICU admissions, or intraoperative complications. The inconclusive literature and our findings do not support the medical necessity of weight loss prior to bariatric surgery for the purpose of reducing surgical complications or predicting successful postoperative weight loss success.
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Cirurgia Bariátrica , Derivação Gástrica , Laparoscopia , Obesidade Mórbida , Feminino , Gastrectomia/efeitos adversos , Humanos , Masculino , Pessoa de Meia-Idade , Obesidade Mórbida/cirurgia , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/cirurgia , Estudos Retrospectivos , Resultado do Tratamento , Redução de PesoRESUMO
With growing integration of robotic technology in thoracic surgery, the need for structured training has never been greater with trainees expressing desire for additional experience. Determining the ideal education program is challenging as the collective experience is still relatively early and growing with many experienced surgeons still becoming facile with the platform. Understanding differences between robotic and thoracoscopic approaches including lung retraction and dissection, use of carbon dioxide insufflation, and lack of tactile feedback serves as the foundation for building a skillset. Currently, there is no standard accepted curriculum for residents. Inclusion of these trainees in structured programs has been shown to be safe with equivalent patient outcomes. There are multiple curricula under development, all of which incorporate use of simulation technology, dual console, and clear, graduated responsibilities within operations. These include introduction to the robotic system prior to progressing to bedside assistance and finally to time as console surgeon. The importance of clear definition of training milestones with deliberate graduation to more complex tasks once competency has been demonstrated cannot be overstated. It is crucial for surgeons practicing robotic surgery to make efforts to further the training of residents, but there has not been any perfect and suitable program identified yet.
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INTRODUCTION: The objective of this study was to compare overall survival (OS) between patients with pT1-2N1 versus pT3N0 NSCLC and various subtypes of pT3N0 NSCLC. METHODS: The National Cancer Database was queried to identify treatment-naive patients with pathologic stage IIB primary NSCLC. Patients were included if they were diagnosed with pT3N0 or pT1-2N1 NSCLC and received definitive surgery within 4 months of diagnosis. The pT3N0 cohort was subdivided by single versus multiple concurrent T3 descriptors and single-T3 subtypes. The 5-year OS was compared using the Kaplan-Meier method, and the Cox proportional-hazards model was used to identify prognostic factors for death. RESULTS: A total of 16,770 patients were included (pT3N0: 7179; pT1-2N1: 9591). pT3N0 NSCLC was associated with greater 5-year OS than pT1-2N1 NSCLC (52.4% versus 47.8%, p < 0.0001). Among patients receiving adjuvant chemotherapy after surgery, multiple-T3 pT3N0 NSCLC was associated with lower 5-year OS than single-T3 pT3N0 NSCLC (49.0% versus 63.3%, p < 0.0001), and chest wall-only pT3N0 NSCLC was associated with the lowest 5-year OS across single-T3 subtypes (additional nodule: 68.3%; size: 64.5%; chest wall: 52.2%, p < 0.0001). Adjuvant chemotherapy was associated with decreased risk of death in the pT3N0 cohort (hazard ratio = 0.65, confidence interval: 0.59-0.71, p < 0.0001). CONCLUSIONS: Patients with pT3N0 NSCLC experience greater 5-year OS after surgery compared with those with pT1-2N1 NSCLC. Multiple-T3 and chest wall-only pT3N0 NSCLC are associated with worse 5-year OS and increased risk of death relative to other T3 subtypes. Future staging systems should consider including notation distinguishing multiple T3 descriptors in pT3N0 NSCLC.
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Video 1Video available at: https://www.jtcvs.org/article/S2666-2507(21)00514-9/fulltext.Video 2Video available at: https://www.jtcvs.org/article/S2666-2507(21)00514-9/fulltext.Video 3Video available at: https://www.jtcvs.org/article/S2666-2507(21)00514-9/fulltext.Video 4Video available at: https://www.jtcvs.org/article/S2666-2507(21)00514-9/fulltext.Video 5Video available at: https://www.jtcvs.org/article/S2666-2507(21)00514-9/fulltext.Video 6Video available at: https://www.jtcvs.org/article/S2666-2507(21)00514-9/fulltext.Video 7Video available at: https://www.jtcvs.org/article/S2666-2507(21)00514-9/fulltext.Video 8Video available at: https://www.jtcvs.org/article/S2666-2507(21)00514-9/fulltext.Video 9Video available at: https://www.jtcvs.org/article/S2666-2507(21)00514-9/fulltext.Video 10Video available at: https://www.jtcvs.org/article/S2666-2507(21)00514-9/fulltext.Video 11Video available at: https://www.jtcvs.org/article/S2666-2507(21)00514-9/fulltext.
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Robotic surgical technology has grown in popularity and applicability, since its conception with emerging uses in general surgery. The robot's contribution of increased stability and dexterity may be beneficial in technically challenging surgeries, namely, inguinal hernia repair. The aim of this project is to contribute to the growing body of literature on robotic technology for inguinal hernia repair (RIHR) by sharing our experience with RIHR at a large, academic institution. We performed a retrospective chart review spanning from March 2015 to April 2018 on all patients who had undergone RIHR at our university hospital. Extracted data include preoperative demographics, operative features, and postoperative outcomes. Data were analyzed with particular focus on complications, including hernia recurrence. A total of 43 patients were included, 40 of which were male. Mean patient age was 56 (range 18-85 years) and mean patient BMI was 26.4 (range 17.5-42.3). Bilateral hernias were diagnosed in 13 patients. All of the patients received transabdominal approaches, and all but one received placement of synthetic polypropylene mesh. There was variety in mesh placement with 23 patients receiving suture fixation and 14 receiving tack fixation. Several patients received a combination of suture, tacks, and surgical glue. Mean patient in-room time was 4.0 h, mean operative time was 2.9 h, and mean robotic dock time was 2.0 h. Regarding intraoperative complications, there was one bladder injury, which was discovered intraoperatively and repaired primarily. Same-day discharges were achieved in 32 patients (74.4%) of patients. One patient was admitted overnight for management of urinary retention. Additional ten patients were admitted for observation. Post-operatively, none of the cases resulted in wound infections. Eleven patients developed seromas and one patient was diagnosed with a groin hematoma. Median follow-up was 37.5 days, and one recurrence was reported during this time. The recurrent hernia in this case was initially discovered during a separate case and was repaired with temporary mesh. The use of the robot is safe and effective and should be considered an acceptable approach to inguinal hernia repair. Future prospective studies will help define which patients will benefit most from this technology.
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Hérnia Inguinal , Laparoscopia , Procedimentos Cirúrgicos Robóticos , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Virilha , Hérnia Inguinal/cirurgia , Herniorrafia/efeitos adversos , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Estudos Retrospectivos , Procedimentos Cirúrgicos Robóticos/métodos , Telas Cirúrgicas , Adulto JovemRESUMO
BACKGROUND: While general population studies have demonstrated a relationship between cigarette smoking and weight loss, this association is not well established among the bariatric patient population. Given that bariatric patients are inherently weight-concerned, understanding the effects of smoking on postoperative weight loss is essential. We examined the association of preoperative smoking, postoperative smoking and changes in smoking status with weight loss after bariatric surgery. In addition, we examined the association of changes in smoking status with subjective indices of patient satisfaction while controlling for weight loss. METHODS: Retrospective chart review of patients who underwent Sleeve Gastrectomy or Roux-en-Y Gastric Bypass for weight loss at a single institution between August 2000 and November 2017. Additional follow up was obtained by telephone survey. Statistical analysis utilized multivariate logistical regressions. RESULTS: Our study included 512 patients. Majority were female (n = 390, 76.2%) and underwent laparoscopic Roux-en-Y gastric bypass (n = 362, 70.7%). Average age was 46.8 years and average follow up was 6.99 years. Preoperative, postoperative and changes in smoking status were not significantly associated with weight loss. Former smokers were significantly more likely to report postoperative satisfaction with self-overall OR 10.62 (p < 0.01), satisfaction with postoperative outcomes OR 4.18 (p = 0.02), and improvement in quality of life OR 4.05 (p = 0.04) compared to continued smokers independent of weight loss. No difference in rates of satisfaction were found between former smokers and never smokers. Smoking cessation and weight loss were independently predictive of positive responses to these satisfaction indices. CONCLUSIONS: We found no association between preoperative smoking, postoperative smoking or changes in smoking status with postoperative weight loss. Smoking cessation was associated with patient satisfaction and improvement in quality of life compared to continued smokers. Smoking cessation and postoperative weight loss were independently predictive of increased patient satisfaction.
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Cirurgia Bariátrica , Derivação Gástrica , Laparoscopia , Obesidade Mórbida , Feminino , Gastrectomia , Humanos , Masculino , Pessoa de Meia-Idade , Obesidade Mórbida/cirurgia , Satisfação do Paciente , Qualidade de Vida , Estudos Retrospectivos , Fumar , Redução de PesoRESUMO
BACKGROUND: The magnetic sphincter augmentation device (MSA) provides effective relief of gastroesophageal reflux symptoms. Dysphagia after MSA implantation sometimes prompts endoscopic dilation. The manufacturer's instructions are that it be performed 6 or more weeks after implantation under fluoroscopic guidance to not more than 15 mm keeping 3 or more beads closed. The purpose of this study was to assess adherence to these recommendations and explore the techniques used and outcomes after MSA dilation. METHODS AND PROCEDURES: We conducted a multicenter retrospective review of patients undergoing dilation for dysphagia after MSA placement from 2012 to 2018. RESULTS: A total of 144 patients underwent 245 dilations. The median size of MSA placed was 14 beads (range 12-17) and the median time to dilation was 175 days. A second dilation was performed in 67 patients, 22 patients had a third dilation and 7 patients underwent 4 or more dilations. In total, 17 devices (11.8%) were eventually explanted. The majority of dilations were performed with a balloon dilator (81%). The median dilator size was 18 mm and 73.4% were done with a dilator larger than 15 mm. There was no association between dilator size and need for subsequent dilation. Fluoroscopy was used in 28% of cases. There were no perforations or device erosions related to dilation. DISCUSSION: There is no clinical credence to the manufacturer's recommendation for the use of fluoroscopy and limitation to 15 mm when dilating a patient for dysphagia after MSA implantation. Use of a larger size dilator was not associated with perforation or device erosion, but also did not reduce the need for repeat dilation. Given this, we would recommend that the initial dilation for any size MSA device be done using a 15 mm through-the-scope balloon dilator. Dysphagia prompting dilation after MSA implantation is associated with nearly a 12% risk of device explantation.
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Esfíncter Esofágico Inferior , Refluxo Gastroesofágico , Dilatação , Esfíncter Esofágico Inferior/cirurgia , Humanos , Fenômenos Magnéticos , Estudos Retrospectivos , Resultado do TratamentoRESUMO
BACKGROUND: Physical distancing required by coronavirus disease 2019 (COVID-19) has limited traditional in-person resident education. We present our novel online curriculum for incorporation into traditional surgical educational programs. METHODS: The online curriculum utilized weekly sub-specialty themed faculty and resident created lectures, ABSITE practice questions, and weekly sub-specialty synchronized readings. Attendance, resident and faculty surveys, and completed ABSITE practice questions evaluated for curriculum success. Curriculum was adapted as COVID-19 clinical restructuring ended. RESULTS: 77% and 80% of clinical residents attended faculty lectures and resident led topic discussions as compared to 66% and 48% attending traditional in-person grand rounds and SCORE curriculum (both p > 0.05). 71.9% of residents and 16.6% of faculty reported improved resident participation while none reported decreased levels of participation (p < 0.001). 87.1% of residents and 66.7% of faculty preferred the online curriculum (p = 0.374). Completed ABSITE practice questions per resident increased from 21 to 31 questions/week (p = 0.541). CONCLUSION: Our online educational curriculum demonstrates success and can serve as a model for online restructuring of resident education.
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COVID-19/epidemiologia , Currículo , Educação a Distância , Cirurgia Geral/educação , Internato e Residência , Pandemias , California , Docentes de Medicina , Humanos , SARS-CoV-2 , Inquéritos e QuestionáriosRESUMO
BACKGROUND: The use of nonsteroidal anti-inflammatory drugs (NSAIDs) is discouraged after bariatric surgery. The effect of NSAIDs on patients who have undergone sleeve gastrectomy (SG) is not well studied. Moreover, the rate of NSAID use after SG is unknown. OBJECTIVES: To determine the rate of NSAID use after SG, and its associated complications. SETTING: A single institution, multi-surgeon, academic, tertiary care hospital. METHODS: We performed a retrospective review of patients who underwent SG between January 1, 2014, and November 1, 2017. A phone interview was conducted with identified patients. The inclusion criteria were any patient who had undergone SG during the study period, and there were no exclusion criteria. RESULTS: We identified 421 SG patients for inclusion. There were 231 phone surveys completed, with 64.5% of respondents reporting some NSAID use after SG. Of the respondents who used NSAIDs, 40.3% reported that they used the drugs often (>once/wk), 28.2% reported occasional use (>once/mo but Assuntos
Laparoscopia
, Obesidade Mórbida
, Preparações Farmacêuticas
, Anti-Inflamatórios
, Anti-Inflamatórios não Esteroides/efeitos adversos
, Gastrectomia/efeitos adversos
, Humanos
, Obesidade Mórbida/cirurgia
, Complicações Pós-Operatórias/cirurgia
, Estudos Retrospectivos
, Resultado do Tratamento
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BACKGROUND: Laparoscopic sleeve gastrectomy (LSG) has recently been considered for the surgical management of refractory gastroparesis. Our study aims to determine the efficacy of LSG as a new treatment modality for gastroparesis. METHODS: A multi-surgeon single institution retrospective chart review of patients who underwent LSG for refractory gastroparesis from September 2016-December 2017. Pre- and postoperative Patient Assessment of Upper Gastrointestinal Disorders-Symptoms Severity Index and/or Gastroparesis Cardinal Symptom Index (GCSI) questionnaires were reviewed. A telephone survey was conducted. Statistical analysis consisted of two-sample t test and utilized SAS v9.4. A P-value <.05 was considered significant. RESULTS: There were 10 patients included and 80% were women with an average age of 43 years (24-63). Mean Body Mass Index was 24.5 (16.8-39.6), and median gastric emptying at 4 hours was 50% (30-85). Etiology of gastroparesis was 50% idiopathic, 40% diabetic, and 10% postsurgical. 80% of patients had previously undergone gastric electrical stimulator implantation, 20% pyloric botox injections, and 1 patient jejunostomy tube placement. One patient required conversion from laparoscopic to open secondary to adhesions. Median length of stay was 5 days (2-13), and median follow-up was 13.3 months. 90% of patients were tolerating a regular diet at longest follow-up with significant improvement in self-reported symptoms. GCSI scores were 33.6 preoperatively and 14.9 postoperatively (P = .01). DISCUSSION: Our study adds to the literature examining the role of LSG in the treatment of gastroparesis. LSG has favorable outcomes at short-term follow-up for patients with refractory gastroparesis.
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Gastrectomia/métodos , Gastroparesia/cirurgia , Laparoscopia/métodos , Adulto , Feminino , Esvaziamento Gástrico , Gastroparesia/etiologia , Gastroparesia/fisiopatologia , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Resultado do Tratamento , Adulto JovemRESUMO
BACKGROUND: Subtotal cholecystectomy is a viable alternative approach to the proverbial "difficult" gallbladder. To date, only a few studies have observed the establishment of those bail-out procedures as an increasingly common surgical practice. The purpose of this study is to assess nationwide trends of subtotal cholecystectomy through evaluation of operative variables and patient- and institution-level characteristics in procedure preference. METHODS: Data were obtained from the National Inpatient Sample for the years between 2003 and 2014. Patients with acute cholecystitis were categorized based on the ninth revision International Classification of Disease Clinical Modification procedure codes for open total, laparoscopic total, open subtotal, or laparoscopic subtotal cholecystectomy. Any patient younger than 18 years of age or with a preoperative stay >1 week was excluded. Logistic regression analysis was performed to evaluate significant patient- and institution-level characteristics associated with the performance of subtotal cholecystectomy. RESULTS: A total of 290,855 patients were evaluated. During the study period, the rate of open and laparoscopic subtotal cholecystectomy sharply increased (0.10% of all cholecystectomy procedures to 0.52% and 0.12% to 0.28%, respectively). The conversion rate from laparoscopic to open total cholecystectomy decreased from 10.5% to 7.6%. Subtotal cholecystectomies were performed at significantly higher rates in men (odds ratio: 1.95, P < .001), Asian Americans (odds ratio: 2.21, P = .037), and patients with alcohol abuse (odds ratio: 2.23, P < .001). Teaching hospitals (odds ratio: 2.41, P < .001) and those in rural areas (odds ratio: 2.26, P < .001) were more likely to perform subtotal cholecystectomies. CONCLUSION: Growing trends in the use of subtotal cholecystectomy suggest evolving surgical practices for acute cholecystitis. Our data suggests that several patient- and hospital-level characteristics might play a deciding role in procedure preference.
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Colecistectomia Laparoscópica/tendências , Colecistite Aguda/cirurgia , Preferência do Paciente/estatística & dados numéricos , Padrões de Prática Médica/tendências , Adulto , Asiático/estatística & dados numéricos , Colecistectomia Laparoscópica/métodos , Conversão para Cirurgia Aberta/estatística & dados numéricos , Conversão para Cirurgia Aberta/tendências , Feminino , Vesícula Biliar/cirurgia , Hospitais de Ensino/estatística & dados numéricos , Hospitais de Ensino/tendências , Humanos , Tempo de Internação , Masculino , Pessoa de Meia-Idade , Padrões de Prática Médica/estatística & dados numéricos , Estudos Retrospectivos , Fatores Sexuais , Adulto JovemRESUMO
Chronic abdominal pain of unknown origin is a challenging diagnosis encountered by clinicians. Patients often undergo an extensive workup and long periods of uncertainty without the establishment of a definitive diagnosis. Diagnostic laparoscopy is a relatively safe procedure that can be used as an effective diagnostic and therapeutic tool in treating this disease. This was a retrospective, single-institution study exploring the efficacy of diagnostic laparoscopy in treating chronic abdominal pain of unknown origin. More than 90 per cent of laparoscopies resulted in a positive finding, with adhesions being the most common. A total of 50 per cent of patients experienced resolution of symptoms on follow-up. Patients were overwhelmingly satisfied with their postoperative outcomes and willing to undergo the procedure again with their outcomes in mind.