The Evolution, Current Value, and Future of the American Society of Anesthesiologists Physical Status Classification System.

The American Society of Anesthesiologists (ASA) Physical Status classification system celebrates its 80th anniversary in 2021. Its simplicity represents its greatest strength as well as a limitation in a world of comprehensive multisystem tools. It was developed for statistical purposes and not as a surgical risk predictor. However, since it correlates well with multiple outcomes, it is widely used-appropriately or not-for risk prediction and many other purposes. It is timely to review the history and development of the system. The authors describe the controversies surrounding the ASA Physical Status classification, including the problems of interrater reliability and its limitations as a risk predictor. Last, the authors reflect on the current status and potential future of the ASA Physical Status system.

Management of a Fragmented Angiocatheter During Central Venous Cannulation: A Case Report and Important Lessons.

Complications during central venous catheter (CVC) insertion are infrequent with an incidence of 0.1%-1%. We experienced a rare CVC complication with fragmentation of the angiocatheter at its hub during central venous cannulation while utilizing the modified Seldinger technique (ie, wire through the catheter technique). Vascular surgery was emergently required to remove the catheter fragment from the neck. Clinicians must remain vigilant during all aspects of CVC insertion, including awareness of the potential for fragmentation of the angiocatheter during its removal over the in situ guidewire. Prompt recognition and appropriate management included leaving the guidewire in place (to stabilize the distal fragmented segment) and promptly consulting vascular surgery for removal before potential vascular embolization of the angiocatheter fragment. We further recommend that all components of the insertion kit be inspected before and after patient use.

Adult Emergence Agitation: A Veteran-Focused Narrative Review.

Emergence agitation (EA) is a self-limited state of psychomotor excitement during awakening from general anesthesia. EA is confined to the emergence period as consciousness is restored, which sharply distinguishes it from other postoperative delirium states. Sporadic episodes of EA may become violent with the potential for harm to both patients and caregivers, but the long-term consequences of such events are not fully understood. Current literature on EA in adults is limited to small-scale studies with inconsistent nomenclature, variable time periods that define emergence, a host of different surgical populations, and conflicting diagnostic criteria. Therefore, true incidence rates and risk factors are unknown. In adult noncardiac surgery, the incidence of EA is approximately 19%. Limited data suggest that young adults undergoing otolaryngology operations with volatile anesthetic maintenance may be at the highest risk for EA. Currently suggested EA mechanisms are theoretical but might reflect underblunted sympathetic activation in response to various internal (eg, flashbacks or anxiety) or external (eg, surgical pain) stimuli as consciousness returns. Supplemental dexmedetomidine and ketamine may be utilized for EA prevention. Compared to the civilian population, military veterans may be more vulnerable to EA due to high rates of posttraumatic stress disorder (PTSD) manifesting as violent flashbacks; however, confirmatory data are limited. Nonetheless, expert military medical providers suggest that use of patient-centered rapport tactics, PTSD trigger identification and avoidance, and grounding measures may alleviate hyperactive emergence phenomena. Future research is needed to better characterize EA in veterans and validate prophylactic measures to optimize care for these patients. This narrative review provides readers with an important framework to distinguish EA from delirium. Furthermore, we summarize current knowledge of EA risk factors, mechanisms, and adult management strategies and specifically revisit them in the context of veteran perioperative health. The anesthesiology care team is ideally positioned to further explore EA and develop effective prevention and treatment protocols.

Neuromuscular blockade management in the critically Ill patient.

Neuromuscular blocking agents (NMBAs) can be an effective modality to address challenges that arise daily in the intensive care unit (ICU). These medications are often used to optimize mechanical ventilation, facilitate endotracheal intubation, stop overt shivering during therapeutic hypothermia following cardiac arrest, and may have a role in the management of life-threatening conditions such as elevated intracranial pressure and status asthmaticus (when deep sedation fails or is not tolerated). However, current NMBA use has decreased during the last decade due to concerns of potential adverse effects such as venous thrombosis, patient awareness during paralysis, development of critical illness myopathy, autonomic interactions, and even residual paralysis following cessation of NMBA use. It is therefore essential for clinicians to be familiar with evidence-based practices regarding appropriate NMBA use in order to select appropriate indications for their use and avoid complications. We believe that selecting the right NMBA, administering concomitant sedation and analgesic therapy, and using appropriate monitoring techniques mitigate these risks for critically ill patients. Therefore, we review the indications of NMBA use in the critical care setting and discuss the most appropriate use of NMBAs in the intensive care setting based on their structure, mechanism of action, side effects, and recognized clinical indications. Lastly, we highlight the available pharmacologic antagonists, strategies for sedation, newer neuromuscular monitoring techniques, and potential complications related to the use of NMBAs in the ICU setting.

Perceptions of gender equity in departmental leadership, research opportunities, and clinical work attitudes: an international survey of 11 781 anaesthesiologists.

BACKGROUND: Women make up an increasing proportion of the physician workforce in anaesthesia, but they are consistently under-represented in leadership and governance. METHODS: We performed an internet-based survey to investigate career opportunities in leadership and research amongst anaesthesiologists. We also explored gender bias attributable to workplace attitudes and economic factors. The survey instrument was piloted, translated into seven languages, and uploaded to the SurveyMonkey® platform. We aimed to collect between 7800 and 13 700 responses from at least 100 countries. Participant consent and ethical approval were obtained. A quantitative analysis was done with χ2 and Cramer's V as a measure of strength of associations. We used an inductive approach and a thematic content analysis for qualitative data on current barriers to leadership and research. RESULTS: The 11 746 respondents, 51.3% women and 48.7% men, represented 148 countries; 35 respondents identified their gender as non-binary. Women were less driven to achieve leadership positions (P<0.001; Cramer's V: 0.11). Being a woman was reported as a disadvantage for leadership and research (P<0.001 for both; Cramer's V: 0.47 and 0.34, respectively). Women were also more likely to be mistreated in the workplace (odds ratio: 10.6; 95% confidence interval: 9.4-11.9; P<0.001), most commonly by surgeons. Several personal, departmental, institutional, and societal barriers in leadership and research were identified, and strategies to overcome them were suggested. Lower-income countries were associated with a significantly smaller gender gap (P<0.001). CONCLUSIONS: Whilst certain trends suggest improvements in the workplace, barriers to promotion of women in key leadership and research positions continue within anaesthesiology internationally.

Sugammadex Reversal of a Large Subcutaneous Depot of Rocuronium in a Dialysis Patient: A Case Report.

Sugammadex is a modified gamma cyclodextrin that encapsulates rocuronium. We report the successful use of sugammadex in the management of an elderly man with end-stage renal failure who sustained an infiltration of subcutaneous rocuronium during rapid sequence induction of general anesthesia. Given the erratic absorption of subcutaneous rocuronium from the tissue, sugammadex was chosen to reverse the neuromuscular block at the end of the procedure. This report demonstrates the efficacy of sugammadex to reverse neuromuscular block in elderly patients with poor renal function. Moreover, the duration of action for sugammadex was sufficient to neutralize the ongoing absorption of subcutaneous rocuronium.