Standardizing the Dosage and Timing of Dexamethasone for Postoperative Nausea and Vomiting Prophylaxis at a Safety-Net Hospital System.

BACKGROUND: A single dose of dexamethasone is routinely given during general anesthesia for postoperative nausea and vomiting (PONV) prophylaxis, although the exact dosage and timing of administration may vary between practitioners. The authors aimed to standardize the dosage and timing of this medication when given to adult patients undergoing general anesthesia for elective surgery. METHODS: Baseline data for 7,483 preintervention cases were analyzed. The researchers attempted to use a standard dose of 8 to 10 mg induction of anesthesia, which, based on a literature review, was effective for PONV prophylaxis, had a similar safety profile as a 4 to 5 mg dose (including in diabetic patients), and may confer additional benefits such as improved prophylaxis and quality of recovery. The interventions included standardizing the medication concentration vials, altering electronic health record quick-select button options, simplifying the intraoperative charting process, and educating the anesthesia providers. The research team then tracked compliance with the standard of care for 2,167 cases after the interventions. RESULTS: Overall compliance with the standard of care increased from 21.2% preintervention to 53.7% postintervention. The number of patients not receiving dexamethasone was reduced from 29.7% to 19.4%. Patients receiving a compliant dose at a noncompliant time increased from 16.3% to 23.8%. Postanesthesia care unit antiemetic administration also decreased after the interventions. CONCLUSION: This study showed improvements in compliance with the dosage of medication with the interventions. However, compliance with the timing of administration remains challenging.

Using predictive risk modelling to identify patients with hidden health needs in an Aboriginal and Torres Strait Islander health service.

BACKGROUND AND OBJECTIVES: In partnership with an Aboriginal and Torres Strait Islander community-controlled health service, we explored the use of a machine learning tool to identify high-needs patients for whom services are harder to reach and, hence, who do not engage with primary care. METHOD: Using deidentified electronic health record data, two predictive risk models (PRMs) were developed to identify patients who were: (1) unlikely to have health checks as an indicator of not engaging with care; and (2) likely to rate their wellbeing as poor, as a measure of high needs. RESULTS: According to the standard metrics, the PRMs were good at predicting health checks but showed low reliability for detecting poor wellbeing. DISCUSSION: Results and feedback from clinicians were encouraging. With additional refinement, informed by clinic staff feedback, a deployable model should be feasible.

Pre-appendectomy hyponatremia is associated with increased rates of complicated appendicitis.

Background: Acute appendicitis is one of the most common surgical emergencies worldwide. Preoperative assessment of the risk of complicated appendicitis may aid in treatment planning. We sought to investigate the association between pre-appendectomy hyponatremia and diagnosis of complicated appendicitis. Methods: The TriNetX platform, a federated health research network that aggregates de-identified electronic health record data of over 90 million patients across the United States, was queried for patients who underwent appendectomy starting January 2019 and who had at least one sodium value from the preoperative period. The study population was stratified into three age groups: pediatric (age < 18), adult (age 18-64), and older adult (age ≥ 65). These groups were subdivided into patients with preoperative hyponatremia (<135 mmol/L) and normonatremia (135-145 mmol/L). Results: Among the 61,245 patients who met inclusion criteria, 17,546 were included for analysis following propensity score matching. The odds of complicated appendicitis were highest in pediatric patients (age < 18) with pre-appendectomy hyponatremia (odds ratio [OR] = 2.91, 95 % CI [2.53, 3.35]). Patients age 18-64 and aged ≥ 65 with preoperative hyponatremia also demonstrated increased odds of a complicated appendicitis diagnosis, but to a lesser extent (OR = 2.11, 95 % CI [1.92, 2.32] (OR = 1.49, 95 % CI [1.25, 1.77], respectively). Conclusions: In a large analysis of matched patients with acute appendicitis, we found an association between immediate preoperative hyponatremia and complicated appendicitis. Future studies are indicated to further evaluate the role of hyponatremia as a potential diagnostic marker for complicated appendicitis in all age groups. Key message: This study suggests a role of hyponatremia as one of multiple variables to incorporate into future clinical decision tools for complicated acute appendicitis.