Researchers' choice of pain scales in trials of children undergoing surgery: A cross-sectional analysis of systematically searched randomized controlled trials and survey of authors

Critical patient safeguards for ambulatory surgery centers

PURPOSE OF REVIEW

The role of ambulatory surgery centers in surgical care is evolving, as lower facility fees and improved patient experience increase the popularity of these venues. As care expands in ambulatory surgery center, so does the complexity of cases and patients cared for in these centers, which may pose a risk for patient safety. Anesthesiologists should lead multidisciplinary teams to screen for appropriate patients and procedures.

RECENT FINDINGS

Patient considerations go beyond physical status and include psychosocial factors. Ensuring patients understand preoperative instructions is crucial to decrease case cancellation rates and facilitate efficiency. Pediatric patients require special considerations including extra attention to preprocedure and postoperative care and instructions, PALS-certified staff, pediatric equipment and medications, as well as heightened awareness of respiratory complications.

SUMMARY

Procedural concerns start with the capabilities of the facility such as equipment, pharmacy, and staffing for each phase of care. However, nuances such as patient throughput in a given day, emergency preparedness, and after-hours staffing will affect both patient safety and staff morale. This article outlines the issues leaders need to consider to ensure patient safety in ambulatory surgery centers.

Pharmacokinetic pharmacodynamic modeling of analgesics and sedatives in children

Pharmacokinetic pharmacodynamic modeling is an important tool which uses statistical methodology to provide a better understanding of the relationship between concentration and effect of drugs such as analgesics and sedatives. Pharmacokinetic pharmacodynamic models also describe between-subject variability that allows identification of subgroups and dose adjustment for optimal pain management in individual patients. This approach is particularly useful in the pediatric population, where most drugs have received limited evaluation and dosing is extrapolated from adult practice. In children, the covariates of weight and age are used to describe size- and maturation-related changes in pharmacokinetics. It is important to consider both size and maturation in order to develop an accurate model and determine the optimal dose for different age groups. An adequate assessment of analgesic and sedative effect using pain scales or brain activity measures is essential to build reliable pharmacokinetic pharmacodynamic models. This is often challenging in children due to the multidimensional nature of pain and the limited sensitivity and specificity of some measurement tools. This review provides a summary of the pharmacokinetic and pharmacodynamic methodology used to describe the dose-concentration-effect relationship of analgesics and sedation in children, with a focus on the different pharmacodynamic endpoints and the challenges of pharmacodynamic modeling.

Single-injection serratus anterior plane block for cardiothoracic surgery via thoracotomy in children: a systematic review and meta-analysis of randomised controlled trials

BACKGROUND

Serratus anterior plane block (SAPB) has gained popularity in cardiothoracic surgery due to its feasibility and simplicity. However, the efficacy of ultrasound-guided single-injection SAPB in the paediatric population has not been well evaluated, as only a few studies with small sample sizes are available.

METHODS

We searched PubMed, Embase (Ovid), Cochrane Central Register of Controlled Trials, Wanfang databases and China National Knowledge Infrastructure from their inception to 31 September 2022 for randomised comparative clinical trials that compared single-injection SAPB with systemic analgesia or different forms of regional analgesia in children. The primary outcomes included postoperative opioid consumption and pain scores within 24 hours. The secondary outcomes included postoperative adverse events, the need for rescue analgesia and the time from the end of surgery to endotracheal tube removal.

RESULTS

Five randomised controlled trials with 418 children meeting the inclusion criteria were included. SAPB markedly reduced postoperative opioid consumption up to 24 hours compared with controls (mean difference (MD): -0.29 mg/kg, 95% CI -0.38 to -0.20, I 2 =67%]. The postoperative pain scores were reduced compared with controls: 1 hour (MD -0.6, 95% CI -1.17 to -0.04, I 2 =92%), 4-6 hours (MD -1.16, 95% CI -1.87 to -0.45, I 2 =90%) and 12 hours (MD -0.71, 95% CI -1.35 to -0.08, I 2 =86%). The incidence of postoperative nausea and vomiting was comparable between SAPB and controls. One trial suggested that the analgesic effect of SAPB was comparable to that of ICNB (intercostal nerve block).

CONCLUSION

Single-injection SAPB is associated with a reduction in opioid consumption and pain intensity after cardiothoracic surgery via thoracotomy in children. Due to the high heterogeneity, the Grading of Recommendations Assessment, Development and Evaluation scores were low. Clinical trials with rigorous methodological approaches as well as safety endpoints are needed to confirm these preliminary findings.

PROSPERO REGISTRATION NUMBER

CRD42021241691.