Publications by authors named "Tong J Gan"

Objective: Patients with obstructive sleep apnea (OSA) may be at increased risk for adverse events during procedural sedation, however, there remains a gap in the literature quantifying these risks. This systematic review and meta-analysis aimed to evaluate the risk of peri-procedural adverse events in OSA patients undergoing procedural sedation in ambulatory settings, compared to those without OSA.

Methods: Four databases were systematically searched for studies published from January 1, 2011 to January 4, 2024.

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Postoperative ileus (POI) is a common complication after colorectal surgery, leading to increased hospital stay and costs. This study aimed to explore patient comorbidities that contribute to the development of POI in the colorectal surgical population and compare machine learning (ML) model accuracy to existing risk instruments. In a retrospective study, data were collected on 316 adult patients who underwent colorectal surgery from January 2020 to December 2021.

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Article Synopsis
  • Doctors should keep a patient's blood pressure at a safe level during surgery, especially for those who may have problems.
  • New guidelines suggest that if a patient’s blood pressure drops too low, it should be treated carefully to avoid causing more issues.
  • After surgery, it's important to check blood pressure because it can stay low for a long time without being noticed, and more research is needed to find the best ways to treat this.
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Background: The suitability of ambulatory surgery for patients with obstructive sleep apnea (OSA) remains controversial. This systematic review and meta-analysis aimed to evaluate the odds of perioperative adverse events in patients with OSA undergoing ambulatory surgery, compared to patients without OSA.

Methods: Four electronic databases were searched for studies published between January 1, 2011 and July 11, 2023.

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Postoperative gastrointestinal disorder (POGD) was a common complication after surgery under anesthesia. Strategies in combination with Traditional Chinese Medicine and Western medicine showed some distinct effects but standardized clinical practice guidelines were not available. Thus, a multidisciplinary expert team from various professional bodies including the Perioperative and Anesthesia Professional Committees of the Chinese Association of Integrative Medicine (CAIM), jointly with Gansu Province Clinical Research Center of Integrative Anesthesiology/Anesthesia and Pain Medical Center of Gansu Provincial Hospital of Traditional Chinese Medicine and WHO Collaborating Center for Guideline Implementation and Knowledge Translation/Chinese Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) Center/Gansu Provincial Center for Medical Guideline Industry Technology/Evidence-based Medicine Center of Lanzhou University, was established to develop evidence-based guidelines.

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Background: Propofol is an intravenous anesthetic associated with hypotension, respiratory depression, and injection-site pain. HSK3486 injectable emulsion (ciprofol) is a 2,6-disubstituted phenol derivative with fast onset and quick, stable recovery. Previous studies support HSK3486 as an effective, safe anesthetic with substantially less injection-site pain than propofol.

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In the United States, ambulatory surgeries account for up to 87% of all surgical procedures. (1) It was estimated that 19.2 million ambulatory surgeries were performed in 2018 (https://www.

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Article Synopsis
  • The Capnostream-20p monitor, which tracks multiple respiratory variables, aims to enhance early detection of respiratory compromise post-surgery through a unit-less value called the integrated pulmonary index (IPI).
  • Over a study involving 358 patients, a total of 802 respiratory events were recorded, with the monitor successfully predicting 75.6% of these events early, falling short of the target detection rate of 80%.
  • While the early detection rate was lower than expected, the overall prediction success, including late detections, was 81.4%, indicating the monitor's utility in monitoring respiratory events.
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Recent Findings: Surgical procedures that involve general anesthesia are performed with either volatile anesthetics or propofol-based total intravenous anesthesia. Both techniques are safe and provide appropriate conditions for surgery. Despite being a well established anesthetic, the use of propofol-based total intravenous anesthesia (TIVA) remains low.

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Despite the availability of several classes of antiemetics, postoperative nausea and vomiting (PONV) remains a substantial burden for patients following surgery, resulting in patient dissatisfaction and prolonged stays in post-anesthesia care units and ultimately increasing the cost of care. Enhanced recovery protocols and PONV management guidelines are now centered on the assessment of the individual patient's risk for developing PONV, as well as multimodal prophylaxis using antiemetics targeting different mechanisms of action. Over the last two decades, the neurokinin-1 receptor (NK1R) has emerged as a therapeutic target for the management of PONV.

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Functional capacity assessment is important for perioperative risk stratification; however, there are currently limited options for objective and economical functional capacity evaluation. Pedometer functions are now widely available in mobile devices and offer a nonintrusive and objective approach to measuring patient activity level over time. Therefore, we conducted this systematic review to assess the value of pedometer readings in predicting perioperative outcomes.

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Background: Medical improvisation is an innovative approach to train healthcare professionals in effective communication. The success of this type of training depends on the active engagement of participants.

Method: A total of 136 interprofessional healthcare workers completed surveys before and after a two-hour medical improvisation communication training session in October 2020.

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Background: Opioid-based anesthesia and analgesia is a traditional component of perioperative care for the cardiac surgery patient. Growing enthusiasm for Enhanced Recovery Programs (ERPs) coupled with evidence of potential harm associated with high-dose opioids suggests that we reconsider the role of opioids in cardiac surgery.

Methods: An interdisciplinary North American panel of experts, using a structured appraisal of the literature and a modified Delphi method, derived consensus recommendations for optimal pain management and opioid stewardship for cardiac surgery patients.

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Introduction: Pain following most surgical procedures is expected. However, the treatment and management of postoperative surgical pain have remained challenging. The use of opioid therapy has become increasingly controversial given the limited therapeutic window of these drugs, the adverse side effects, and the potential for abuse.

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Although prophylactic antiemetics are commonly used perioperatively, an estimated 30% of surgical patients still suffer from postoperative nausea and vomiting (PONV). Very few prospective trials have studied rescue treatment of PONV after failure of prophylaxis, providing limited evidence to support clinical management. In patients who have failed PONV prophylaxis, administering a rescue antiemetic from the same drug class has been reported to be ineffective.

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The introduction of enhanced recovery pathways (ERPs) has led to a considerable paradigm shift towards evidence-based, multidisciplinary perioperative care. Such pathways are now widely implemented in a variety of surgical specialties, with largely positive results. In this narrative review, we summarize the principles, components and implementation of ERPs, focusing on recent developments in the field.

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Advances in cardiac surgical operative techniques and myocardial protection have dramatically improved outcomes in the past two decades. An unfortunate and unintended consequence is that 80% of the preventable morbidity and mortality following cardiac surgery now originates outside of the operating room. Our hope is that a renewed emphasis on evidence-based best practice and standardized perioperative care will reduce overall morbidity and mortality and improve patient-centric care.

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