Anaesthesia for non-obstetric surgery during pregnancy

Laparoscopic Cholecystectomy Under Combined Spinal and Epidural Anesthesia in the First Trimester of Pregnancy-Case Report and Literature Review

Can combined spinal and epidural anesthesia be the gold standard for laparoscopic surgery for pregnant patients? This case report presents a first trimester pregnant patient who was admitted for obstructive jaundice syndrome (pain in the right hypochondrium, nausea, and vomiting). Initially, because of the risk/benefit ratio of pregnancy, the treatment was medical and the patient was immediately discharged because her clinical condition improved, but she was rapidly readmitted to the surgery department because of worsening symptoms. Emergency surgical intervention (laparoscopic cholecystectomy) under combined spinal and epidural anesthesia (CSEA) was performed to reduce the patient's risks. Since most analgesics are insufficiently studied in pregnancy, analgesia with ropivacaine 0.2% was used on the epidural catheter. No pathological changes were identified in the fetal Doppler ultrasound preoperatively and postoperatively. Similarly to other studies, our case highlights the necessity for cholecystectomy for acute cholecystitis even if the patient is in the first trimester of pregnancy. If the decision is delayed, the morbidity and mortality for mother and fetus become unjustified. The peculiarity of the present report is the type of anesthesia chosen. We consider that combined spinal and epidural anesthesia may become a possible gold standard suitable for laparoscopy in the first trimester of pregnancy.

The Fontan Circulation in Pregnancy: Hemodynamic Challenges and Anesthetic Considerations

Pregnancy in patients with Fontan physiology presents unique challenges due to altered cardiovascular dynamics inherent to both conditions. The Fontan procedure reroutes venous blood directly to the pulmonary arteries, bypassing the heart, and necessitating precise regulation of pulmonary venous resistance and systemic venous pressure to maintain effective cardiac output. The significant cardiovascular adaptations required during pregnancy to meet the metabolic demands of the mother and fetus can overburden the limited preload capacity and venous compliance in Fontan patients, predisposing them to a spectrum of potential complications, including arrhythmias, heart failure, thromboembolism, and obstetric and fetal risks. This review delineates the essential physiological adaptations during pregnancy and the challenges faced by Fontan patients, advocating for a comprehensive care approach involving multidisciplinary collaboration, vigilant monitoring, tailored anesthetic management, and postpartum care. Understanding the complex dynamics between Fontan physiology and pregnancy is crucial for anesthesiologists to develop and execute individualized management strategies to minimize risks and optimize outcomes for this high-risk population.

Ethical Care of Pregnant Patients During Labor, Delivery, and Nonobstetric Surgery

The 4 basic principles of ethics (beneficence, nonmaleficence, autonomy, and justice) can guide clinical decision-making for the pregnant patient during labor and delivery, as well as when undergoing nonobstetric surgery. An evidence-based decision-making conversation with the patient facilitates obtaining informed consent. When maternal-fetal conflict arises, both during labor and delivery and nonobstetric surgery, beneficence-based obligations to both parties should be considered, with discussions and decisions well documented. Labor is not an impediment to women providing consent for care. A careful balance between evidence-based clinical judgment and patient autonomy is necessary when addressing cesarean delivery.

Perioperative management of surgical procedure during pregnancy: a systematic review

Background

Approximately 1-2% of pregnant women undergo non-obstetric surgery under anaesthesia during their pregnancy. This review specifically targets anaesthesia management for pregnant women undergoing non-obstetric surgery in resource-limited settings.

Methods

Following the delineation of primary questions, scope, and inclusion criteria, a comprehensive search strategy utilizing advanced techniques was implemented across electronic sources, databases, and websites to identify relevant articles. A rigorous screening process was applied during the literature evaluation. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020 statement guided the conduct of this review, ensuring adherence to standardized reporting practices.

Results

A total of 240 articles were initially identified from databases and websites. After screening titles and abstracts, 85 papers were excluded, and an additional 43 were removed due to duplication. Subsequently, 68 items were subjected to eligibility screening. Finally, 30 papers that specifically addressed anaesthetic considerations for pregnant women undergoing non-obstetric operations were reviewed.

Conclusion

Thorough preoperative evaluation is essential for all patients, with particular attention to modifications in anaesthetic management to accommodate physiological changes during pregnancy. Urgent and emergent surgeries should proceed promptly during pregnancy to optimize outcomes for both the mother and foetus. Maintaining uteroplacental perfusion generally involves avoiding maternal hypoxaemia, hypotension, hyper- and hypocapnia, temperature extremes, and stress. When deemed safe, regional anaesthesia may offer favourable outcomes for both the mother and foetus.

Abdominal surgery under ketamine anesthesia during second trimester impairs hippocampal learning and memory of offspring by regulating dendrite spine remodeling in rats

Recent evidence showed that general anesthesia produces long-term neurotoxicity and cognitive dysfunction. However, it remains unclear whether maternal non-obstetric surgery under ketamine anesthesia during second trimester causes cognitive impairment in offspring. The present study assigned pregnant rats into three groups: 1) normal control group receiving no anesthesia and no surgery, 2) ketamine group receiving ketamine anesthesia for 2 h on the 14th day of gestation but no surgery, and 3) surgery group receiving abdominal surgery under ketamine anesthesia on the 14th day of gestation. On postnatal day 1, the offspring rats in Ketamine group and surgery group were assigned to receive intra-peritoneal injection of Senegenin (15 mg/kg), once per day for consecutive 14 days. The offspring's spatial perception, anxiety-like behavior, and learning and memory were evaluated. Then the offspring's hippocampal tissues were collected. The offspring of the surgery group were impaired in the spatial perception in the cliff avoidance test and the spatial learning and memory in the Morris water maze test. Accordingly, the activity of histone deacetylases increased, the protein levels of NEDD9, BDNF, p-TrkB, Syn and PSD-95 decreased, and the density of dendritic spines reduced in the hippocampus of the offspring of the surgery group, and such effects were not seen in the offspring of the ketamine group, neither in the offspring of control group. Senegenin alleviated the learning and memory impairment, and increased the protein levels of NEDD9, BDNF, p-TrkB, Syn and PSD-95 and the density of dendritic spines in the offspring of the surgery group. ketamine anesthesia plus surgery during second trimester impairs hippocampus-dependent learning and memory, and the deficits could be rescued by treatment with Senegenin.