Search Results (136)

Background/Objectives: Postoperative opioid exposure after lumbar fusion remains a key clinical concern. Understanding which perioperative factors are associated with lower postoperative opioid use may help optimize recovery after minimally invasive (MIS) transforaminal lumbar interbody fusion (TLIF). This study aimed to determine if patients undergoing MIS-TLIF under spinal anesthesia (SA) showed lower postoperative opioid use compared to those undergoing MIS-TLIF under general anesthesia (GA). Methods: We retrospectively studied all adult patients (>18 years) undergoing 1- and contiguous 2-level MIS-TLIFs performed by a single surgeon. Patients undergoing the procedure under GA were compared to those undergoing the procedure under SA. Postoperative oral opioid use, up to 3 months post discharge, was collected. A 1:1 propensity score matching (PSM) protocol was implemented. Each outcome variable was initially assessed using univariate regression. Predictor variables with a p-value < 0.2 were included in the multivariate regression model. This was a retrospective, non-randomized study, and residual confounding cannot be excluded despite PSM. Results: The matched groups (n = 50 in each group) did not differ significantly depending on demographics or levels fused. Before regression, mean number of postoperative opioid prescriptions (p = 0.03), mean total operating room (OR) time in minutes (p < 0.01), and median length of stay (LOS) in days (p = 0.03) were significantly different. Multivariate regression showed that the GA group received 216.5 more total morphine milligram equivalents than the SA group (95% CI = 0.7–432.2, p = 0.049). The days of opioid use were higher in the GA group by 3.8 days (95% CI = 0.5 to 7.1, p = 0.025). On multivariate regression, LOS in hours was greater in the GA group by 14.1 h (p = 0.042). Conclusions: SA is an effective anesthetic modality for spinal surgery with the advantages of reduced postoperative opioid use, reduced OR time, and shorter LOS compared to GA. Full article

Background: Pre-eclampsia causes endothelial dysfunction and altered vascular reactivity, which may increase perioperative risk, particularly under the physiologic stress of general anesthesia (GA). However, the evidence regarding its independent effects under uniform GA conditions is limited. This study assessed the association between pre-eclampsia and intraoperative hemodynamic stability as well as postoperative complications in women undergoing cesarean section under GA. Methods: This retrospective cohort study screened 1242 women who underwent GA for cesarean delivery between January 2017 and July 2024. After applying exclusion criteria, 959 patients were included: 169 with and 790 without pre-eclampsia. The intraoperative blood-pressure and heart-rate trends, vasopressor use, operative variables, and postoperative complications were analyzed. Predictors of postoperative respiratory complications were identified using logistic regression with Firth correction. Results: Patients with pre-eclampsia showed consistently higher mean arterial pressures throughout induction and emergence, whereas trends in heart rate were similar. Postoperative morbidity was higher in the pre-eclampsia group (11.8% vs. 5.3%), with increased respiratory complications (3.6% vs. 1.1%) and longer hospital stays. Pre-eclampsia independently predicted postoperative respiratory complications in univariable (odds ratio [OR] 3.27, 95% confidence interval [CI] 1.13–8.90, p = 0.03), multivariable (OR 3.13, 95% CI 1.09–8.98, p = 0.03), and Firth’s analyses (OR 3.21, 95% CI 1.11–8.77, p = 0.03). Conclusions: Pre-eclampsia was associated with persistent intraoperative hypertension and higher risks of postoperative respiratory morbidity under GA. These findings support the need for individualized hemodynamic control, cautious fluid management, and increased postoperative respiratory surveillance in patients with pre-eclampsia. Full article

Background and Objectives: The association between different anesthesia modalities and spermiogram parameters and reproductive outcomes in patients undergoing microscopic subinguinal varicocelectomy (MSV) remains unclear. In this retrospective cohort study, we aimed to compare spermiogram parameters and pregnancy rates between patients receiving general anesthesia (GA) versus spinal anesthesia (SA) for MSV with 2-year follow-up data. Materials and Methods: Male patients aged between 18–50 years, with ASA physical scores between I–III, who underwent unilateral or bilateral primary MSV, were included in the study. To minimize selection bias and balance the baseline characteristics between the GA group and SA group, we employed a propensity score matching approach, matching all 38 SA patients with 380 GA patients selected from a larger pool. Patients with complete 24-month follow-up data were included in the final analysis. The primary outcome of our study was determined as evaluating sperm count changes. Secondary outcomes included other sperm parameters (motility, morphology and semen volume), natural pregnancy rates, perioperative complications and recovery parameters. Results: The final analysis included 418 patients who met all inclusion criteria and completed the follow-up period. The study population comprised 380 patients in the GA group and 38 in the SA group. No significant difference was found between the groups in terms of sperm count. Greater improvement in sperm motility was observed in the SA group starting from the third month onwards (p = 0.027). Natural pregnancy was achieved in 16/38 (42.1%) of SA patients versus 125/380 (32.9%) of GA patients (p = 0.031). In addition, better results were obtained in terms of recovery parameters in the SA group. Other results were comparable between the groups. Conclusions: Spinal anesthesia for MSV was associated with greater improvement in sperm motility and higher natural pregnancy rates compared to general anesthesia, despite comparable sperm count improvements. These associations warrant further investigation in prospective randomized trials. Full article

Orthopedic and lower limb fracture surgeries are among the most frequent emergency procedures and are commonly performed under general anesthesia (GA). Background and clinical significance: Epidemiologically, postoperative coma after GA is rare (0.005–0.08%), but delayed awakening (2–4%) and postoperative delirium or postoperative cognitive dysfunction (POCD) (15–40%) remain significant. These neurological complications increase markedly in vulnerable brain patients with psychiatric, cerebrovascular, or neurodegenerative disorders. Methods: This mechanistic narrative review synthesizes evidence from clinical and experimental studies (1990–2025) comparing the effects of general versus Regional (RA)/local (LA) or spinal anesthesia in vulnerable neuropsychiatric populations “with pre-existing brain illness” undergoing orthopedic surgery. Domains analyzed include neuropsychiatric medications effects and interactions with the GA process and with general anesthetic agents, alongside alterations in neurotransmitter modulation, cerebrovascular autoregulation, mitochondrial dysfunction, oxidative stress, redox imbalance, and neuroinflammatory activation. The review summarizes evidence on how the choice of anesthesia type influences postoperative brain outcomes in patients with known neurological conditions. Results: From previous studies, patients with psychiatric and/or chronic brain illness have a 3–5-fold increased risk of delayed emergence and up to 60% incidence of postoperative delirium. Pathophysiological mechanisms involve GABAergic overinhibition, impaired perfusion, mitochondrial energy failure, and inflammatory amplification. Regional/local and spinal anesthesia may offer physiological advantages, preserve cerebral perfusion, and lower neurological complication rates. Conclusions: General anesthesia may exacerbate pre-existing brain vulnerability, converting reversible neural suppression into irreversible dysfunction. Therefore, whenever possible, regional/local or spinal anesthesia with or without sedation should be prioritized in those neurologically vulnerable patients to reduce the length of hospital stay (LOS) and to lower postoperative neurological complications and risks in psychiatric and neurologically unstable patients. Full article

Background/Objectives: Intolerable postoperative pain perception (IPPP) may occur in patients undergoing vitreoretinal surgery (VRS), while general anesthesia (GA) is often preferred over regional techniques due to multiple contraindications. Intraoperative administration of intravenous rescue opioid analgesics (IROA) during GA increases the risk of perioperative adverse events; however, this requirement can be reduced through preventive analgesia. The Adequacy of Anesthesia (AoA) concept, based on entropy EEG and the Surgical Pleth Index (SPI), allows real-time titration of IROA to maintain optimal nociception/anti-nociception balance and create comparable intraoperative conditions across patients. This study aimed to identify risk factors for IPPP after VRS performed under AoA-guided GA combined with intravenous preventive analgesia using COX-3 inhibitors. Methods: A total of 165 patients scheduled for VRS were randomized to receive AoA-guided GA combined with intravenous preventive analgesia using either paracetamol plus metamizole, paracetamol alone, or metamizole alone. Results: Data from 153 patients were analyzed. Neither age, body mass index, smoking status, arterial hypertension, diabetes mellitus, intraoperative noxious maneuvers, demand for IROA, nor length of surgery correlated with the incidence of IPPP under AoA-guided GA. The combination of paracetamol and metamizole resulted in the lowest rate of IPPP among all groups. Conclusions: AoA-guided GA combined with COX-3 inhibitors appears to standardize intraoperative nociception/anti-nociception balance in patients undergoing VRS, effectively mitigating most known risk factors for IPPP, with female sex independently associated with its occurrence. We recommend the optimization of perioperative pharmacotherapy through individualized AoA-guided GA with intravenous COX-3 inhibitors to minimize IPPP incidence. Full article

Background/Objectives: Lumbar degenerative disease drives numerous elective spine surgeries, and anesthetic choice significantly influences airway risk, hemodynamics, analgesia, mobilization, and recovery. Interest in awake lumbar surgery, typically using spinal anesthesia (SA) with light sedation, has grown as comparative studies suggest comparable safety to general anesthesia (GA) with potential reductions in opioid use, nausea, time to ambulation, and efficiency metrics. However, these benefits may be context-dependent under standardized perioperative care. Therefore, the aim of this umbrella review is to synthesize previously published meta-analyses that compare postoperative outcomes between SA and GA in patients undergoing lumbar spine surgery. Methods: A systematic literature search was executed with defined criteria across PubMed, Embase, and Web of Science. Data analysis was performed using the metaumbrella R package to report equivalent Hedges’ g values. Each meta-analysis was evaluated with the AMSTAR2 tool, and the credibility of the evidence was determined with Ioannidis criteria. Results: Seven meta-analyses were included. Pooled data showed that SA was associated with shorter operative time, reduced length of stay, and lower intraoperative blood loss, supported by class III credibility for operative time and length of stay and class IV for blood loss in the setting of high between study heterogeneity. SA was also associated with lower odds of postoperative nausea and vomiting and reduced postoperative analgesic requirements, both graded as class IV with prediction intervals that encompassed the null. Intraoperative hypotension and bradycardia did not differ significantly between SA and GA, and postoperative pain scores and overall complication rates were similarly neutral. Conclusions: This umbrella review identifies potential advantages of SA in lumbar spine surgery, including shorter operative time, reduced length of stay, lower intraoperative blood loss, and lower postoperative nausea and analgesic requirements, while finding no consistent differences in hemodynamic events or overall complications. These findings suggest SA as an alternative pathway to general anesthesia for selected lumbar procedures but highlight substantial heterogeneity and low-to-intermediate credibility for several endpoints, underscoring the need for additional high-quality, protocolized comparative studies to refine effect sizes and define optimal patient and procedural selection. Full article

Anesthesia in older patients is challenging and requires a range of skills in various techniques, both during surgery and in the post-operative period. Post-operative delirium is one of the most common cognitive dysfunctions after surgery, and elderly patients are at the highest risk. The pathophysiology of post-operative delirium remains incompletely understood. Several mechanisms (vascular, neurodegenerative, neuroimmune, neuroinflammation, drug-induced, stress-induced, and monoaminergic) have been considered to play a role. The type of anesthesia—general (gas, total intravenous), regional, or combined—was identified as a predictive factor. However, numerous prospective and retrospective studies have failed to determine which anesthetic technique is the best for preventing post-operative delirium. The type of surgery appears to be more critical than the type of anesthesia. However, the development of post-operative cognitive dysfunction could be linked to the depth of anesthesia. Dexmedetomidine displayed promising therapeutic potential for the efficient prevention or treatment of hyperactive post-operative delirium. The management of hypoactive post-operative delirium still requires further investigations, particularly in elderly patients. Full article

Background: Neuraxial anesthesia (NA) is increasingly utilized across various surgical specialties, particularly for abdominal procedures, making it a potential alternative to general anesthesia (GA). Methods: This narrative review was conducted following the PRISMA guidelines for systematic reviews to report on the application of NA worldwide and across various surgical fields. Results: The findings indicate that while NA is gaining popularity, its adoption varies significantly by procedure type and specialty. Evidence supporting its use in major abdominal surgeries remains limited, with most studies focusing on pelvic and minor procedures. The emerging concept of awake surgery under NA shows promising potential, as preliminary data suggest benefits in reducing perioperative morbidity and enhancing recovery. Despite these advancements, gaps in the literature highlight the need for further high-quality trials to establish NA as a safe and routine alternative to GA. Conclusions: NA is increasingly explored across different surgical specialties as a feasible and effective option for abdominal procedures. However, despite this growing interest, solid evidence supporting its use in major abdominal surgery remains limited. Full article

Background/Objectives: Postoperative nausea and vomiting (PONV) are common after general anesthesia (GA) and, in patients undergoing vitreoretinal surgery, may be triggered by the oculocardiac reflex (OCR) leading to the oculoemetic reflex (OER). Inadequate dosing of intravenous rescue opioid analgesics may further provoke OCR. Adequacy of Anesthesia (AoA) monitoring enables optimized titration of intravenous rescue opioid analgesics, while preemptive intravenous or peribulbar analgesia may reduce opioid use. This study evaluated the impact of preemptive paracetamol or peribulbar block (PBB) combined with AoA-guided GA on the incidence of PONV, OCR, and OER in patients undergoing vitreoretinal surgery. Methods: A total of 185 patients were randomized to four groups: GA with AoA-guided intraoperative rescue opioid analgesia plus a single intravenous dose of paracetamol 1 g, or PBB using 1% ropivacaine, 0.5% bupivacaine, or a 1:1 mixture of 0.5% bupivacaine/2% lidocaine. Data from 175 patients were analyzed. Results: AoA-guided GA yielded an OCR incidence of 11.4% and PONV incidence of 4%. PBB, regardless of anesthetic solution, did not significantly reduce intraoperative rescue opioid analgesia requirements or the incidence of PONV, OCR, or OER compared with intravenous paracetamol. Notably, no PONV occurred in patients with three Apfel risk factors (predicted risk ≈ 61%) who received PBB. Conclusions: No overall advantage of PBB over intravenous paracetamol was observed. It may, however, benefit patients at high PONV risk. Full article

Background/Objectives: Awake procedures performed under spinal anesthesia (SA) have been associated with reduced hospitalization, costs, and postoperative complications compared with general anesthesia (GA). Endocan, an endothelial cell-specific proteoglycan, serves as a biomarker of endothelial activation and vascular dysfunction and may reflect the differential vascular and immunomodulatory effects of anesthetic techniques. This prospective observational study aimed to compare perioperative changes in circulating endocan levels between patients undergoing surgery under GA and SA. Methods: Eighty adult patients (aged 18–65 years, ASA I–II) scheduled for elective surgery were included and assigned to GA (n = 42) or SA (n = 38) based on standard clinical indications. Serum endocan levels were measured preoperatively, at 6 h, and at 24 h postoperatively using an ELISA assay. Results: In the GA group, endocan levels increased significantly from baseline (304.5 ± 80.7 pg/mL) to 6 h (511.5 ± 88.7 pg/mL, p < 0.001), and although partially decreased by 24 h (427.5 ± 87.9 pg/mL, p < 0.001), remained above baseline. In the SA group, endocan rose from baseline (320.7 ± 72.5 pg/mL) to 6 h (415.2 ± 79.5 pg/mL, p < 0.001) but returned near baseline at 24 h (352.6 ± 84.7 pg/mL, p = 0.233). Conclusions: These findings suggest that while surgery induces endothelial activation in both groups, GA is associated with a more sustained endothelial response than SA. Full article

Background and Objectives: Ultrasound (US)-guided peripheral regional anesthesia (pRA) is gaining increasing importance in emergency medicine as an effective, low-ridsk alternative to general anesthesia (GA), procedural sedation (PS), or opioid therapy. By enabling rapid, direct pain management in the emergency department (ED), pRA can help preserve scarce surgical and anesthetic resources and, in some cases, avoid inpatient admissions. The aim of this study was to analyze the indications, techniques, and clinical impact of pRA in the orthopedic-focused ED of an affiliated hospital. Materials and Methods: All pRA and PS procedures performed over a six-year period were retrospectively reviewed among 35,443 orthopedic-trauma emergency patients. pRA was carried out under US guidance with standardized monitoring. Diagnoses, block techniques, effectiveness, and complications were analyzed descriptively. Results: A total of 1292 patients (3.7%) underwent either pRA (n = 1117; 3.2%) or PS (n = 175; 0.5%). pRA was performed in 22% of cases for interventions such as reductions or extensive wound management. In 78%, pRA was applied for analgesia, for example, in the diagnostic work-up and treatment of non-immediately operable fractures, lumbago, or arthralgia. The most common pRA techniques were brachial plexus blocks (54%) and femoral nerve blocks (25%). Fascial plane blocks (6.1%) and paravertebral blocks (1.5%) were rarely used. PS was performed in 175 of 1292 patients (13%), although pRA would have been feasible in 159 of these cases. No complications of pRA were observed, and GA could routinely be avoided. Conclusions: US-guided pRA proved to be an effective and safe alternative to PS, GA, or systemic analgesia for selected indications, allowing immediate treatment without the need for operative capacities. To ensure safe application, these techniques should be an integral part of the training curriculum for ED personnel. Full article

Background and Objectives: Anesthesia type may influence early hemodynamics post-transcatheter aortic valve implantation (TAVI), but sex-based differences in anesthetic response remain underexamined. We aimed to assess whether male and female patients exhibit differential responses to general anesthesia (GA) versus monitored anesthesia care (MAC) during TAVI, with particular attention to post-procedural transvalvular gradient changes. Methods: We conducted a single-center retrospective cohort study of 693 patients who underwent TAVI between 2011 and 2023 with complete echocardiographic and anesthesia data. Patients were categorized into four groups by sex and anesthesia type: GA-Male, MAC-Male, GA-Female, and MAC-Female. Hemodynamic, anesthetic, echocardiographic characteristics, and 6-month outcomes were compared. Results: Significant differences were observed across the four sex-anesthesia groups in several hemodynamic and echocardiographic measures. Initial analyses showed that female patients had significantly higher 24 h post-TAVI transvalvular mean gradient delta values compared to males, and among MAC patients, females also had higher 30-day mean gradients. However, secondary analyses revealed that valve size differed significantly between groups and was a key driver of these hemodynamic differences. After adjusting for valve size in a multivariable regression model, gradient differences between groups were no longer statistically significant. Net fluid balance and vasopressor use were more strongly associated with anesthesia type than sex, with GA groups requiring greater support. No significant differences in 6-month cardiovascular outcomes were observed. Conclusions: Early post-TAVI transvalvular gradient changes appeared to be primarily influenced by valve size rather than sex or anesthesia type alone. These findings suggest previously observed sex-based differences may reflect underlying disparities in valve sizing, highlighting need for further prospective studies assessing the independent contributions of sex, anesthesia modality, and valve size on early valve performance/long-term outcomes. Full article

Background/Objectives: Some patients undergoing vitreoretinal surgery (VRS) require general anesthesia (GA), despite the possibility of developing intolerable postoperative pain perception (IPPP). Intraoperative rescue opioid analgesia (IROA) administration during GA poses a risk of perioperative nausea and vomiting (PONV), which may result in suprachoroidal hemorrhage with permanent visual impairment. Adequacy of Anesthesia (AoA) optimizes intraoperative IROA titration. Intravenous preemptive analgesia (IPA) with cyclooxygenase-3 (COX-3) inhibitors is added to GA to reduce the IROA dose. In this additional analysis, we assessed the impact of preemptive analgesia with COX-3 inhibitors, administered alongside GA with AoA-guided IROA, on the incidence of PONV, oculocardiac reflex (OCR), and oculoemetic reflex (OER) in patients undergoing VRS as secondary outcomes. Methods: A total of 165 patients scheduled for VRS were randomly assigned to receive AoA-guided GA combined with IPA at a single dose of 1 g of paracetamol (acetaminophen) or 2.5 g of metamizole or both. A total of nine patients were excluded due to technical problems with the intraoperative surgical pleth index (SPI) measurement, inability to report postoperative pain, and postoperative arousal resulting in a loss of follow-up in Stage 5. Results: Regardless of the group assignment, AoA guidance of GA resulted in PONV in 4%, OCR in 10%, and OER in 0% of the 153 analyzed patients undergoing VRS. No significant differences were observed between the groups regarding the type of IPA. PONV was observed in 2.11% (3/142) of patients with zero, one, or two risk factors of PONV, as compared to 27% (3/11) of patients with at least three PONV risk factors, assessed using the Apfel score. Conclusions: IPA with both paracetamol and metamizole did not demonstrate a benefit in reducing the analyzed adverse events compared with their single use in patients undergoing VRS under AoA guidance during GA. Surprisingly, PONV was hardly observed in patients with zero, one, or two PONV risk factors assessed by the Apfel score who underwent AoA-guided VRS during GA with IPA using one or two COX-3 inhibitors. Full article

Background: Deferred cord clamping (DCC) is beneficial for preterm infants, but there are concerns about the safety of DCC during Cesarean deliveries (CD) under general anesthesia (GA). We evaluated maternal and neonatal outcomes in preterm CD under GA vs. regional anesthesia (RA) after implementing 180 s of DCC. Methods: This retrospective single-center observational study included CD at <33 weeks gestation, delivered between January 2018 and December 2023. The cord was clamped before 180 s for concerns of maternal bleeding or infant apnea after 30–45 s stimulation. Data was collected from reports from electronic medical records, neonatal intensive care unit database, and manually from the medical records of the patient. Multivariable regression analysis was used to assess the effect of anesthesia type and DCC on outcomes, adjusting for confounders. Results: This study included 170 mothers and 194 infants, and 84.9% of the infants received DCC ≥ 60 s. The GA group had a higher percentage of emergency CD and a lower median duration of DCC (105 s vs. 180 s, p ≤ 0.001) compared to RA. In multivariate regression analysis, GA was associated with lower odds (95% CI) of umbilical artery pH < 7 [0.1, (0.0, 0.6)], base deficit ≥ 16 [0.0, (0.0, 0.5)], and higher odds of necrotizing enterocolitis [28.2, (1.4, 560.0)]. GA was not associated with maternal hemorrhage, delivery room (DR) resuscitation, or other major neonatal morbidities or mortality. DCC ≥ 60 s was associated with lower maternal blood loss [Regression coefficient −698, (−1193, −202)], lower odds of transfusion [0.4, (0.1, 1.0)], DR resuscitation [0.4, (0.2, 0.8)], and chronic lung disease [0.4, (0.2, 0.9)], and higher survival without major morbidities [2.8, (1.2, 6.8)]. Conclusions: DCC was performed in a majority of CD under GA by adhering to protocols to shorten DCC in cases where maternal or fetal safety was threatened. GA with DCC was not associated with increased neonatal resuscitation or major neonatal morbidities and was associated with lower maternal hemorrhage and transfusion. Full article

Background/Objectives: Laparoscopic appendectomy (LsA) is a standard acute surgical procedure typically performed under general anesthesia (GA). However, GA is associated with side effects such as hemodynamic instability and postoperative nausea/vomiting. Regional anesthesia (RA) has gained attention as an effective alternative in such surgeries, as it reduces surgical stress responses, provides adequate postoperative analgesia, and promotes early mobilization. This study evaluates the effectiveness of the combined use of spinal anesthesia (SA) and transversus abdominis plane block (TAPB) in LsA procedures. Methods: This retrospective observational study included 220 patients who underwent LsA between 2020 and 2023. Patients were divided into two groups: Group 1 (n = 110) received bilateral TAPB, and Group 2 (n = 110) received unilateral TAPB, both under SA. Postoperative pain was assessed using the Visual Analog Scale (VAS), and outcomes such as time to first analgesic requirement, analgesic consumption, and patient satisfaction were recorded. Results: This study evaluated the effects of SA combined with TAPB in LsA. Bilateral TAPB significantly prolonged the time to first analgesic request (13.7 vs. 12.1 h; p = 0.001) and reduced analgesic requirements (p = 0.008) compared to unilateral TAPB. VAS scores were significantly lower in Group 1 at the 9th and 12th hours postoperatively (p = 0.003 and p = 0.039). Although overall satisfaction scores were similar, a higher proportion of patients in Group 1 reported being “very satisfied” or “excellent” (55.5% vs. 42.7%). Conclusions: The combination of spinal anesthesia and bilateral TAPB is a safe and effective anesthetic strategy for LsA. Compared to unilateral TAPB, it offers superior postoperative analgesia and improved patient satisfaction. Full article