Perioperative medicine

Molecular Precision Medicine: Application of Physiologically Based Pharmacokinetic Modeling to Predict Drug-Drug Interactions Between Lidocaine and Rocuronium/Propofol/Paracetamol

The perioperative period, encompassing preoperative, intraoperative, and postoperative phases, is crucial for comprehensive patient care. During this time, the use of opioids and other drugs can lead to drug-drug interactions (DDIs), potentially resulting in adverse drug reactions (ADRs) that increase morbidity, mortality, and healthcare costs. This study investigates the drug-drug interactions (DDIs) between rocuronium, propofol, paracetamol, and lidocaine, focusing on the CYP-mediated metabolism of these drugs in the perioperative context, where these drugs are frequently co-administered. Using physiologically based pharmacokinetic (PBPK) modeling through the GastroPlus™ software and in vitro experiments with Hep G2 cells, we aimed to assess potential toxicities and pharmacokinetic interactions. Cellular viability assays revealed significant toxicity when lidocaine was combined with propofol and rocuronium, while paracetamol exhibited no considerable impact on viability. PBPK simulations confirmed moderate interactions with rocuronium and weak interactions with propofol but no relevant interactions with paracetamol. These findings emphasize the need for dose adjustments in perioperative settings to enhance patient safety, particularly with propofol and rocuronium, while supporting the co-administration of lidocaine and paracetamol. These findings show the importance of moving towards a personalized medicine model, adjusting the clinical use of lidocaine according to individual patient needs, thus promoting safer and more effective perioperative care and moving beyond the "one-size-fits-all" approach in anesthetic management.

Undervaluation of Perioperative Work for ACL Reconstruction by Relative Value Scale Update Committee Methodology in a Single Surgeon's Practice

OBJECTIVES

The purpose of this study was to determine the accuracy of the Relative Value Update Committee (RUC) and Centers for Medicare & Medicaid Services current times and work relative value units (wRVUs) for the perioperative work involved in anterior cruciate ligament (ACL) reconstruction by directly timing perioperative tasks as they occur in real time.

METHODS

The RUC was contacted to obtain a list of perioperative tasks and the corresponding times allotted for the tasks involved in arthroscopically aided ACL reconstruction (Current Procedural Terminology code 29888). The tasks that occurred both inside and outside the operating room were timed by the attending physician as the event occurred. The time for each task was then multiplied by its respective Centers for Medicare & Medicaid Services-assigned intensity coefficient to calculate the wRVU. Calculated and allotted wRVUs were compared for accuracy.

RESULTS

The tasks timed in this study were allotted 100 minutes by the RUC and a total wRVU value of 2.026. Our study found that these tasks took 132.1 minutes and had a total wRVU value of 2.713. The overall time it takes to perform perioperative tasks in arthroscopically aided ACL surgeries is underestimated by 32.1 minutes, which results in an undervaluation of the total wRVU value by 0.687.

CONCLUSIONS

The perioperative wRVU assigned by the RUC underestimates the amount of time assigned to perform the required tasks. The RUC should consider using prospective times collected by physicians to calculate a more accurate wRVU. In addition, the RUC should consider how modern patient care practices and requirements have increased the intensity of work for physicians.

Management of post-operative anaemia in patients undergoing surgery for colorectal cancer: a qualitative focus group-based study

BACKGROUND

Optimal management of anaemia following surgery for colorectal cancer remains unclear. Peri-operative anaemia is common in patients undergoing resectional surgery for colorectal cancer. A significant amount of research has been conducted into the management of pre-operative anaemia; however, little work has investigated post-operative anaemia. We intended to investigate the facilitators of and barriers against the standardised correction of post-operative anaemia. These can aid in identifying optimum treatment for patients following surgery for colorectal cancer.

METHODS

Four focus groups were held with 29 participants from a multidisciplinary panel of healthcare professionals from two different NHS hospital sites in the UK. The discussions were audio recorded and underwent professional transcription. Transcripts were checked against recordings before undergoing thematic analysis using a realist approach.

RESULTS

Four themes were identified. The key barriers to standardised post-operative anaemia correction were a lack of protocoled guidelines or a defined pathway, insufficient education and training, and systemic barriers, such as financial drivers and drug availability. The key facilitator identified was collaboration and communication.

DISCUSSION

This study has identified several key barriers and thresholds which can be used in future studies to improve the standardised management of post-operative anaemia.

Effect of pharmacist care on clinical outcomes and therapy optimization in perioperative settings: A systematic review

PURPOSE

Integration of pharmacists into the perioperative practice has the potential to improve patients' clinical outcomes. The aim of this systematic review is to systematically investigate the evidence on the roles of pharmacists in perioperative settings and the effects of pharmacist interventions on clinical outcomes and therapy optimization.

METHODS

A protocol-led (CRD42023460812) systematic review was conducted using search of PubMed, Embase, CINAHL and Google Scholar databases. Studies that investigated the roles and impact of pharmacist-led interventions in the perioperative settings on clinical outcomes were included. Data were extracted and quality assessed independently by two reviewers using the DEPICT-2 (Descriptive Elements of Pharmacist Intervention Characterization Tool) and the Crowe Critical Appraisal Tool (CCAT), respectively. Studies were grouped according to the clinical area into 5 sections: (1) pain control and opioid consumption; (2) venous thromboembolism (VTE); (3) surgery-related gastrointestinal complications; (4) postoperative medication management; and (5) total parenteral nutritional.

RESULTS

Nineteen studies involving a total of 7,168 patients were included; most studies were conducted in gastrointestinal (n = 7) and orthopedics (n = 6) surgical units. Most included studies (n = 14) employed a multicomponent intervention including pharmaceutical care, education, guideline development, drug information services, and recommendations formulation. The processes of developing the implemented interventions and their structures were seldom reported. Positive impacts of pharmacist intervention on clinical outcomes included significant improvement in pain control and reductions in the incidence of VTE, surgery-related stress ulcer, nausea, and vomiting. There is inconsistency in the findings related to medication management (ie, achieving desired therapeutic ranges) and management of chronic conditions (hypertension and type 2 diabetes).

CONCLUSION

Whilst there is some evidence of positive impacts of pharmacist intervention on clinical outcomes and optimizing drug therapy, this evidence is generally of low quality and insufficient volume. While this review suggests that pharmacists have essential roles in improving the care of patients undergoing surgery, more research with rigorous designs is required.

Improving perioperative acetaminophen administration for safer and cost-effective multimodal analgesia in pediatric surgery: A QI initiative

BACKGROUND

The use of acetaminophen in the perioperative period has emerged as an attractive option for providing safer and cost-effective analgesia in children.

AIMS

The primary aim of our project was to increase the use of acetaminophen (both oral and intravenous) in the perioperative period from a baseline of 39.5% to 50% for all surgical patients within 24 months. The secondary aim was to increase the use of enteral acetaminophen from 10% to 52.5% during the same period.

METHODS

A multidisciplinary team was formed, and model for improvement was chosen as the QI methodology. The primary measure was the total percentage of surgical patients receiving any form of perioperative acetaminophen, while our secondary measure was the percentage use of oral acetaminophen administration. We also tracked the average maximum PACU (Post Anesthesia Care Unit) pain scores and the percentage of patients receiving IV opioids. Multiple interventions were conducted, including education, increasing the availability of acetaminophen, and optimizing the electronic medical record (EMR). Monthly data was collected using an automated report in the EMR.

RESULTS

We successfully achieved our goal, increasing the use of acetaminophen from 39.5% to 70% within four months. Despite some fluctuations, by the end of 24 months, we not only met but surpassed our goal, with 63% of patients receiving perioperative acetaminophen. Similarly, the usage of oral acetaminophen increased from a baseline of 10% to 78%. Our average maximum PACU pain scores improved from 5.4 to 5.2, and the percentage of patients receiving rescue opioids decreased from 15.4 to 13.1.

CONCLUSION

We successfully achieved and sustained our goals of improving acetaminophen use for our surgical patients without worsening pain scores or worsening use of intravenous opioids. Future directions include further refining our strategies and exploring additional opportunities to optimize pain management in pediatric perioperative settings.

Patient-Centeredness in the Perioperative Period-A Rapid Review of Current Research

PURPOSE

The indication of surgery is a critical moment in a person's life implying different needs, feelings, or fears. The aim of the current literature review was to elucidate the prevailing utilization of the concepts 'patient-centeredness' and 'person-centeredness' within the perioperative period.

DESIGN

A rapid review design.

METHODS

Literature searches were conducted in the databases PubMed, Scopus (Elsevier), American Psychological Association PsychInfo (Ovid), Embase (Ovid), CINAHL (Ovid), and Cochrane Library in December 2022. Rayyan software was used to assess the articles. Joanna Briggs Institute critical appraisal tools were used to evaluate the quality of the included articles. Thematic analysis was used to identify themes across the articles.

FINDINGS

The electronic database searches identified 1,967 articles. A total of 12 articles were assessed in full text against the inclusion and exclusion criteria, and finally, a total of seven articles were included. The articles originated from six countries, employed disparate methodological approaches, and featured a heterogeneous array of participants representing various health care settings. Patient-centeredness held the mantle as the most prominently used concept across the seven articles, whereas person-centeredness emerged as the least frequently explored concept. One theme was identified across the articles; Preparedness. This was related to shared decision-making and information pre, peri- and postoperative.

CONCLUSIONS

This rapid review suggests that patient preparedness, particularly through shared decision-making and providing information, is a recurring theme in the limited studies on patient- or centeredness in the perioperative context. The fact that only one single study focuses on person-centered care underscores the pressing need for a comprehensive re-evaluation of modern perioperative care.

Potential vicious cycle between postoperative pain and sleep disorders: A bibliometric analysis

Background

Surgical pain affects postoperative sleep quality, and they jointly form a vicious cycle of mutual influence. The cycle of postoperative pain and sleep disorders could lead to delirium, cardiovascular disease, and hyperalgesia, which significantly affect patients' postoperative recovery. Thus, exploring this phenomenon is of great importance for surgical patients, and warrants further investigation.

Objective

By employing bibliometric methods, this study systematically analyzes the publications on postoperative pain-sleep disorders, identifies research trends and field dynamics, and ultimately provides insights for further progress in this research area.

Methods

In this study, we searched the Web of Science database for studies on postoperative pain and sleep disorders from 2013 to 2023, and analyzed the number of publications, journals, authors, institutions, country regions, and keywords by utilizing CiteSpace, VOSviewer, and Bibliometrix.

Results

The 1894 retrieved publications showed a trend of increasing number of publications and correlations between postoperative pain and sleep disorders from 2013 to 2023. The top countries for publications included the USA, China, etc., establishing a global collaborative network centered around the USA, China, and Europe. The top institutions for publications included University of California System, Harvard University, etc. The top authors include Christine Miaskowski, Steven M. Paul, Qiuling Shi, etc. These publications involved multiple disciplines including surgery, neurology, and anesthesiology, and various research funds including NIH, HHS, NSFC, etc. The top journals for publications included the European Archives of Oto-Rhino-Laryngology, etc. Keywords that appear most frequently in this field include "pain", "surgery", "quality of life", "sleep", "depression", and "outcomes". The thematic map indicated that the hot topics in this area include obstructive sleep apnea, tonsillectomy, children, pain, quality of life, and sleep. The undeveloped topics with research potential included postoperative pain, analgesia and dexmedetomidine, breast cancer, fatigue, and lung cancer.

Conclusion

The increased number of publications and correlations between postoperative pain and sleep disorders, and the collaborative network across the USA, China, and Europe indicate a growing global interest in this area. This study also provides valuable insights into the trend of hot topics and frontiers and shows that this is an evolving and dynamic research area.

Investigating risk factors for medication errors during perioperative care: A retrospective cohort study

Medication errors during perioperative care significantly compromise patient safety and the quality of outcomes. It is crucial to identify and understand the factors that contribute to these errors to develop effective, targeted interventions. This study aims to explore the risk factors associated with medication errors during perioperative care in a tertiary hospital setting, focusing on patient demographics, medication types, administration routes, and nursing care characteristics. A retrospective cohort study was conducted, encompassing adult patients who underwent surgical procedures from January 2020 to January 2023. Data on medication administration, patient demographics, and surgical details were extracted from electronic health records. Medication errors were classified based on the harm caused to the patients. Logistic regression analyses were employed to identify significant risk factors. The study included 1723 patients, with a balanced gender distribution. The median patient age was 53 years. Medication errors were significantly associated with patient age, the type of medication administered, and specific administration routes. Higher education levels and advanced professional titles among nursing staff were inversely related to the occurrence of medication errors. The presence of a dedicated anesthesia nurse significantly reduced the likelihood of errors. Patient age, medication type, administration route, nursing education level, and the involvement of specialized anesthesia nurses emerged as significant factors influencing the risk of medication errors in perioperative care. These findings underscore the need for targeted educational and procedural interventions to mitigate such errors, enhancing patient safety in surgical settings.

Current Status and Global Trend of Rebound Pain After Regional Anesthesia: A Bibliometric Analysis

Purpose

Rebound pain after regional anesthesia, a common phenomenon when the analgesic effect wears off, has been recognized in the last a few years. The aim of this study is to analyze the status and tendency of this area in a macroscopic perspective.

Methods

Bibliometric analysis is the primary methodology of this study. Literature retrieval was conducted in Web of Science (WoS) Core Collection. WoS, Excel, VOSviewer and CiteSpace were employed to do the analyses and visualization. Parameters were analyzed, such as publications, citations, journals, and keywords, etc.

Results

In total, 70 articles in the past 10 years were identified eligible. Most articles (14 pieces) were published in 2021, followed by 2022 and 2023 with 13 articles. Researchers come from 134 institutions and 20 countries. Huang Jung-Taek, Hallym College, and USA are the most productive author, institution and country, respectively. The articles were mainly published on the top journals of anesthesiology, orthopedics and surgery. The topic of these articles is primarily about the clinical issues of rebound pain. Peripheral nerve block, brachial plexus block and femoral nerve block are the activist keywords in the area, while perioperative management, fracture surgery and outcome may become hotpots in the next years.

Conclusion

Our results show that the study of rebound pain after regional anesthesia starts relatively late and is in upward tendency, future studies can focus on the perioperative management and outcomes of fracture patients, and the definition and mechanism of rebound pain after regional anesthesia.

Facilitators and barriers to eliciting physical function goals before and after surgery: A qualitative study with clinicians

OBJECTIVE

Describe clinicians' perspectives of facilitators and barriers to eliciting physical function goals from patients with multiple chronic conditions pre- and post-surgery.

METHODS

Semi-structured qualitative interviews were conducted with clinicians, recruited from an academic medical center, who treat adult patients with multiple chronic conditions. Purposive sampling ensured multiple provider types were represented. Interviews were conducted in person or via web conference and were audio recorded. Findings were summarized using descriptive qualitative content analysis.

RESULTS

Of the 12 participating clinicians, 92% were female and 83% specialized in geriatrics. Clinicians had a mean of 10.7 (min-max: 1-30) years of experience. Key facilitators to goal-setting conversations were sufficient time, familial support, and patient cognitive ability. Barriers included lack of time, lack of training, patient challenges in choosing realistic and specific actionable goals, emotional barriers, and cognitive challenges.

CONCLUSION

Some facilitators and barriers are modifiable, including time, inclusion of family members in the clinical encounter, and clinician training to enable actionable goal setting. These results highlight areas for intervention to facilitate goal elicitation for physical function in clinical care settings.

PRACTICE IMPLICATIONS

Clinicians should be aware of the barriers impacting eliciting goals. Healthcare organizations could consider providing effective goal elicitation training and tools to facilitate goal setting conversation.

Personalized Noninvasive Respiratory Support in the Perioperative Setting: State of the Art and Future Perspectives

Background: Noninvasive respiratory support (NRS), including high-flow nasal oxygen therapy (HFNOT), noninvasive ventilation (NIV) and continuous positive airway pressure (CPAP), are routinely used in the perioperative period. Objectives: This narrative review provides an overview on the perioperative use of NRS. Preoperative, intraoperative, and postoperative respiratory support is discussed, along with potential future areas of research. Results: During induction of anesthesia, in selected patients at high risk of difficult intubation, NIV is associated with improved gas exchange and reduced risk of postoperative respiratory complications. HFNOT demonstrated an improvement in oxygenation. Evidence on the intraoperative use of NRS is limited. Compared with conventional oxygenation, HFNOT is associated with a reduced risk of hypoxemia during procedural sedation, and recent data indicate a possible role for HFNOT for intraoperative apneic oxygenation in specific surgical contexts. After extubation, "preemptive" NIV and HFNOT in unselected cohorts do not affect clinical outcome. Postoperative "curative" NIV in high-risk patients and among those exhibiting signs of respiratory failure can reduce reintubation rate, especially after abdominal surgery. Data on postoperative "curative" HFNOT are limited. Conclusions: There is increasing evidence on the perioperative use of NRS. Use of NRS should be tailored based on the patient's specific characteristics and type of surgery, aimed at a personalized cost-effective approach.

A Review of the Lidocaine in the Perioperative Period

This review analyzes the controversies surrounding lidocaine (LIDO), a widely recognized local anesthetic, by exploring its multifaceted effects on pain control in the perioperative setting. The article critically analyzes debates about lidocaine's efficacy, safety, and optimal administration methods. While acknowledging its well-documented analgesic attributes, the text highlights the ongoing controversies in its application. The goal is to provide clinicians with a comprehensive understanding of the current discourse, enabling informed decisions about incorporating lidocaine into perioperative protocols. On the other hand, emphasizes the common uses of lidocaine and its potential role in personalized medicine. It discusses the medication's versatility, including its application in anesthesia, chronic pain, and cardiovascular diseases. The text recognizes lidocaine's widespread use in medical practice and its ability to be combined with other drugs, showcasing its adaptability for individualized treatments. Additionally, it explores the incorporation of lidocaine into hyaluronic acid injections and its impact on pharmacokinetics, signaling innovative approaches. The discussion centers on how lidocaine, within the realm of personalized medicine, can offer safer and more comfortable experiences for patients through tailored treatments.

Surgical outcomes and patient-centred perioperative programs

Perioperative medicine is changing, and its goals are expanding. More and more attention is paid to the surgical experience and the patient's quality of life. Patient-reported data represent a useful tool in this context. Patient-reported outcomes measures (PROMs) and experience measures (PREMs) are among the most used categories. However, creating perioperative programs capable of integrating traditional perioperative data with these scales is not easy. New technologies, particularly artificial intelligence, thanks to their ability to recognise, interpret, process or simulate human feelings, emotions and moods, could provide the necessary tools to combine all perioperative aspects, placing the patients and their needs at the centre of the process.

New Perspective for Drug-Drug Interaction in Perioperative Period

In this review, we aim to discuss current information on drug interactions in the perioperative period. During this period, patients receive several drugs that may interact with each other and affect the efficacy and safety of the treatment. There are three types of drug interactions: pharmacodynamic, pharmacokinetic, and pharmaceutical. It is important to recognize that drug interactions may increase the toxicity of the drug or reduce its efficacy, increasing the risk of complications in the perioperative period. This review describes the most commonly used perioperative drugs approved by the FDA and some of the described interactions between them. Thoroughly reviewing a patient's medication list and identifying potential interactions are essential steps in minimizing risks. Additionally, vigilant monitoring of patients during and after surgery plays a pivotal role in early detection of any signs of drug interactions. This article emphasizes the significance of addressing DDIs in the perioperative period to ensure patient well-being and advocates for the implementation of careful monitoring protocols to promptly identify and manage potential interactions.