Daily Anesthesiology Research Analysis

In 106 adults undergoing emergency laparotomy, pressure-controlled ventilation with volume guarantee improved intraoperative compliance and reduced driving pressure and mechanical power. However, it did not significantly reduce postoperative pulmonary complications by postoperative day 7 compared with volume-controlled ventilation, providing an important negative patient-centered result.

Impact: The study directly tests whether a commonly promoted physiologic ventilation strategy improves a clinically meaningful postoperative outcome. Its negative result cautions against adopting ventilation modes based solely on intraoperative surrogate improvements.

Clinical Implications: Pressure-controlled ventilation with volume guarantee may be considered when improved intraoperative respiratory mechanics are desired, but it should not be assumed to prevent postoperative pulmonary complications. Perioperative teams should continue to use broader lung-protective strategies and evaluate patient-centered outcomes.

Future Directions: Larger multicenter trials should determine whether specific high-risk subgroups benefit from this ventilation mode and whether combining it with other lung-protective interventions can improve postoperative outcomes.

This network meta-analysis of 103 randomized trials found that regional anesthesia improved analgesia and reduced opioid requirements compared with local infiltration or no block. Paravertebral block showed the most consistent benefit, particularly for movement-related pain, while fascial plane blocks were reasonable alternatives when paravertebral block was not feasible; serious complications were rarely reported.

Impact: The analysis integrates a large randomized evidence base to address an important practical question: which regional technique should be preferred for mastectomy. It provides comparative guidance rather than evaluating a single block in isolation.

Clinical Implications: For mastectomy performed by experienced practitioners, paravertebral block may be preferred when consistent analgesia and reduction in opioid use are priorities. Fascial plane blocks can be selected when paravertebral block is technically unsuitable or unavailable, while simple surgical infiltration alone may be insufficient for major breast surgery.

Future Directions: Future pragmatic trials should standardize block definitions and drug regimens, compare patient-reported recovery and chronic postsurgical pain, and evaluate implementation across different expertise and resource settings.

Among 1,750 analyzed cesarean deliveries, stroke or transient ischemic attack occurred in 12.3% of deliveries in women with moyamoya disease versus 0.1% without the disease. All events occurred within 7 days, and the association persisted in woman-level analyses, supporting intensive early postpartum neurologic surveillance without establishing causality.

Impact: This study quantifies the early postpartum neurologic risk in a rare but high-risk obstetric population using one of the largest comparative datasets available. The findings can change surveillance planning and urgency of neurologic evaluation even though they do not prove that neuraxial anesthesia causes the events.

Clinical Implications: Women with moyamoya disease should receive multidisciplinary peripartum planning, careful hemodynamic management, and structured neurologic surveillance during the first postpartum week after cesarean delivery. New neurologic symptoms should prompt urgent evaluation rather than being attributed automatically to postdural puncture headache or routine postpartum changes.

Future Directions: Prospective multicenter registries should examine anesthetic technique, blood pressure and carbon dioxide targets, cerebral perfusion monitoring, delivery mode, and postpartum surveillance protocols to identify modifiable risk factors and improve prevention.