Search Results (52)

Major reconstructive free-flap surgery often requires ICU admission, yet early signals associated with postoperative antibiotic escalation remain poorly characterized. We conducted a single-center retrospective cohort study of 119 consecutive postoperative ICU admissions after major free-flap reconstruction. Exposures were postoperative day-1 procalcitonin (PCT) and documented postoperative shock; the primary endpoint was clinician-initiated antibiotic escalation (“upgrade”), and secondary endpoints were documented microbiological positivity and ICU mechanical ventilation duration. Escalation occurred in 85/119 admissions (71.4%). Day-1 PCT was higher with escalation (median 0.25 vs. 0.135 ng/mL; p = 0.033), and shock was more frequent (59/85 [69.4%] vs. 13/34 [38.2%]; p = 0.003). Escalation was associated with longer ventilation (median 3515 vs. 2170 min; p < 0.001) and higher rates of any positive culture (54/85 [63.5%] vs. 8/34 [23.5%]; p < 0.001). In multivariable logistic regression adjusting for operative time and intraoperative IV volume, shock remained independently associated with escalation (adjusted OR 3.52, 95% CI 1.48–8.36; p = 0.004), whereas log-transformed PCT was not (p = 0.224). PCT showed modest apparent discrimination for escalation (AUC 0.63), improving to 0.71 when combined with shock. These findings should be interpreted as observational associations with escalation behavior, supporting prospective evaluation of physiology-plus-biomarker stewardship approaches. Full article

Background/Objectives: Postoperative pneumonia (PP) is a significant complication following thoracic surgery, increasing morbidity, mortality, and hospital length of stay. Identifying risk factors is crucial for optimizing perioperative management. This study analyses predictors for PP in patients undergoing anatomical lung resections in a single center setting. Methods: A prospective cohort study was conducted using data from the German Thoracic Registry (GTR). Patients who underwent anatomical lung resection were included in the study, while non-anatomical resections and cases with missing data were excluded. The primary outcome measure was the incidence of PP, which was analyzed using chi-square tests and Fisher’s exact test. Results: PP was observed in 15.2% of the 381 patients. Significant preoperative predictors included American Society of Anesthesiologists (ASA) classification ≥ 3 (p = 0.021), C-reactive protein (CRP) ≥ 20 mg/L (p = 0.004), white blood cell count (WBC) ≥ 15,000/µL (p = 0.003) and forced expiratory volume in 1 s (FEV1) < 50% (p = 0.004). Intraoperative risk factors included thoracotomy (THT) (p = 0.001) and duration of operation > 180 min (p = 0.002). Postoperative predictors included Intensive Care Unit (ICU) admission (p < 0.001) and mechanical ventilation > 24 h (p < 0.001). PP was associated with a higher perioperative mortality rate (10.3% vs. 1.2%, p = 0.01) and prolonged hospital stay. Conclusions: A number of risk factors for the development of PP have been identified, which may help to reduce the incidence of the condition. For further validation, multicenter studies are required. Full article

Background: Airway stenting is an alternative therapy for patients with complicated esophagectomy. Case presentation: A 60-year-old man with clinical stage IIIA esophageal cancer underwent neoadjuvant chemotherapy followed by robot-assisted subtotal esophagectomy with cervical esophagogastrostomy and jejunostomy. During surgery, both bronchial arteries were ligated to facilitate esophageal mobilization. Bronchoscopy on the first postoperative day showed no abnormalities; however, by the second postoperative day, the patient developed pneumonia and septic shock, requiring mechanical ventilation. On the fifth postoperative day, bronchoscopy revealed extensive epithelial injury extending from the trachea to both main bronchi, indicating ischemic airway damage. He was diagnosed with airway necrosis and referred to our respiratory department. Serial bronchoscopic examinations and suctioning of the sloughed epithelium were performed, and a tracheostomy enabled weaning from mechanical ventilation. By the twenty-fourth postoperative day, bronchoscopy revealed the accumulation of large, hardened secretions within the trachea, carina, and both main bronchi, resulting in airway narrowing and a high risk of asphyxiation. A silicone Y-shaped airway stent was inserted to maintain patency. Following stent placement, airway secretions progressively decreased, and the patient was discharged on the sixty-third postoperative day. The stent was removed six months later, with no recurrence of airway or respiratory complications. Conclusion: This case illustrates a rare but severe complication of extensive airway necrosis, likely caused by intraoperative bronchial artery ligation and dissection of the tracheal membranous portion. Although preservation of the bronchial arteries and meticulous surgical technique are essential preventive strategies, such complications may be unavoidable. In cases of extensive airway necrosis, airway stenting can serve as an effective therapeutic option to prevent obstruction and support recovery. Full article

Background: Spontaneous ventilation with intubation (SVI) during video-assisted thoracoscopic surgery (VATS) has been introduced as a hybrid technique that combines the physiological benefits of spontaneous breathing with the safety of a secured airway. However, its application in patients with chronic obstructive pulmonary disease (COPD) remains controversial due to concerns about hypercapnia, hypoxemia, and dynamic hyperinflation. To date, no study has directly compared COPD and non-COPD patients undergoing VATS lobectomy under SVI using identical anesthetic and surgical protocols. Methods: A prospective observational study was conducted between January 2022 and December 2024 at a single tertiary thoracic surgery center. A total of 36 patients undergoing elective VATS lobectomy with SVI were included and divided into two groups: COPD (n = 17) and non-COPD (n = 19), based on GOLD criteria. All patients were intubated with a double-lumen tube and allowed to maintain spontaneous ventilation during one-lung ventilation (OLV) after recovery from neuromuscular blockade. Arterial blood gas (ABG) samples were collected at four predefined time points (T1–T4), and intraoperative respiratory parameters, hemodynamics, spontaneous ventilation time, and spontaneous ventilation fraction (SpVent%) were recorded. Postoperative outcomes, including ICU stay, complications, and conversion to controlled ventilation, were analyzed. Statistical comparisons were performed using t-test, Mann–Whitney U test, chi-square test, and ANCOVA with adjustment for age, sex, BMI, and FEV₁%. Results: All 36 procedures were successfully completed under SVI without conversion to controlled mechanical ventilation or thoracotomy. Baseline demographics were comparable between COPD and non-COPD patients regarding age (68.4 ± 6.9 vs. 67.8 ± 7.1 years; p = 0.78) and BMI (27.1 ± 4.6 vs. 26.3 ± 4.2 kg/m²; p = 0.56), while pulmonary function was significantly lower in COPD patients (FEV₁/FVC 53.8% (IQR 47.5–59.9) vs. 82.4% (78.5–85.2); p < 0.001). The duration of spontaneous ventilation was significantly longer in the COPD group (82 ± 14 min vs. 58 ± 16 min; p < 0.001), and remained significant after ANCOVA adjustment (β = +23.7 min; p = 0.001). The SpontVent% was higher in COPD patients (80% [70–90] vs. 60% [45–80]), showing a trend toward significance (p = 0.11). Intraoperative permissive hypercapnia was well tolerated: peak PaCO₂ levels at T3 were higher in COPD (52 ± 6 mmHg) than in non-COPD patients (47 ± 5 mmHg; p = 0.06), without pH dropping below 7.25 in either group. No significant differences were observed in mean arterial pressure, oxygen saturation, ICU stay (1.1 ± 0.4 vs. 1.0 ± 0.5 days; p = 0.48), or postoperative complication rates (p = 0.67). All patients were extubated in the operating room. Conclusions: Intubated spontaneous ventilation during VATS lobectomy is feasible and safe in both COPD and non-COPD patients when performed by experienced teams. COPD patients, despite impaired baseline lung function, were able to maintain spontaneous breathing for significantly longer periods without developing severe hypercapnia, acidosis, or hemodynamic instability. These findings suggest that SVI may represent a lung-protective alternative to fully controlled one-lung ventilation, particularly in hypercapnia-adapted COPD patients. Further multicenter studies are warranted to validate these results and define standardized thresholds for CO₂ tolerance, patient selection, and intraoperative monitoring during SVI. Full article

Background: Discontinuing mechanical ventilation during cardiopulmonary bypass (CPB) is common but may adversely affect postoperative pulmonary function. This study aimed to evaluate the impact of stopping ventilation during CPB on postoperative gas exchange, radiographic findings, intensive care unit (ICU) length of stay (LOS), mortality, reintubation, re-exploration, and bleeding. Methods: A prospective observational study was performed involving adult patients scheduled for elective cardiac surgery requiring CPB. Participants were divided into ventilated and non-ventilated groups according to intraoperative strategy. Postoperative arterial carbon dioxide levels (PaCO₂), arterial partial pressure of oxygen (PaO₂), the PaO₂/FiO₂ ratio (P/F ratio), arterial oxygen saturation (SaO₂), and the ratio of PaCO₂ to minute ventilation (PaCO₂/MV) were measured before the induction of anesthesia (within 5 min after transportation into the operating room), postoperatively within 5–10 min after transportation to the ICU, and in a 24 h postoperative period. Chest X-ray data, mechanical ventilation time, LOS in ICU, re-exploration, reintubation, and bleeding parameters were documented. Analyses were also conducted with the estimation of the age effect and BMI. Results: Individuals in the non-ventilated group exhibited lower postoperative P/F ratios and elevated postoperative PaCO₂ and PaCO₂/MV ratios. The difference in gas exchange leveled off within 24 h. There was no difference in the incidence of atelectasis (postoperatively in a 24 h period), mechanical ventilation time, LOS in ICU, or mortality. However, the incidence of bleeding was higher in the non-ventilated group (χ² = 5.78, p = 0.016). Interestingly, postoperative PaCO₂ and PaCO₂/MV peaked in the 50-year age group. Conclusions: Continued mechanical ventilation during CPB correlates with better postoperative gas exchange, better CO₂ clearance, and fewer bleeding events. The results suggest that maintaining low tidal volume ventilation during CPB may provide benefits, especially for patients aged 50 years. Full article

Background: Cerebral desaturation during one-lung ventilation (OLV) in thoracic surgery has been associated with postoperative cognitive dysfunction (POCD). While the adverse effects of low intraoperative regional cerebral oxygen saturation (rScO₂) are well documented, the potential clinical value of maintaining supranormal rScO₂ levels has not been thoroughly studied. Methods: We conducted a retrospective observational study based on a previously collected cohort from a tertiary university hospital. Adult patients undergoing elective thoracic surgery between January 2019 and December 2022 were included, provided they received lidocaine either intravenously or via a paravertebral block as part of a standardized anesthetic protocol. Patients were divided into the following two groups based on their mean INVOS values 30 min into OLV: those with rScO₂ ≥75% (H-INVOS group) and <75% (L-INVOS group). Intraoperative physiological variables, inflammatory biomarkers, cognitive function via the Mini-Mental State Examination, and postoperative outcomes were analyzed. Results: The H-INVOS group exhibited significantly higher preoperative lung function, higher PaO₂ and PaCO₂ values during OLV, and higher hemoglobin concentrations across all timepoints. They also demonstrated better preservation of cognitive function, lower IL-18 expression at 24 h postoperatively, and shorter hospital stays. There were no statistically significant differences in intraoperative hemodynamics or ventilatory mechanics. Full article

Objective: The aim of this study is to analyze the effects of sutureless aortic valve bioprosthesis implantation compared with stented conventional bioprosthesis in patients with severe aortic stenosis. This is a propensity matching institutional study. Materials and Methods: We compared 37 patients who underwent aortic valve replacement with Carpentier Edwards Perimount implantation (group 1) with 37 patients with sutureless Perceval S implanted (group 2). Preoperative, intraoperative, and postoperative parameters were studied. Results: The cross-clamp time, the mechanical ventilation times, the intensive care unit, and the hospital stay were significantly shorter in group 2 than in group 1 (p-value < 0.001). The cardio-pulmonary bypass time was 74 [45, 201] minutes in group 2 and 82 [48, 654] minutes in group 1 (p-value = 0.113). The postoperative mean gradients were 13 [6, 44] mmHg in group 2 and 14 [6, 19] mmHg in group 1 (p-value 0.285), and the effective orifice areas in these two groups were 1.5 ± 0.18 cm² vs. 1.1 ± 0.4 cm² (p = 0.002). The percentage of minimally invasive approach was higher in group 2 than in group 1. The echocardiographic follow-up analysis showed that the mean and maximum gradients with a sutureless prosthesis implant were lower than that of a traditional prosthesis, although this difference was not statistically significant. Conclusions: The Perceval S valve seems to be an effective alternative solution for biological valve implantation with good hemodynamic characteristics as compared with Carpentier Edwards Perimount prosthesis, providing shorter ischemic and extracorporeal circulation time and better postoperative recovery. Perceval S valve implantation facilitates the minimally invasive approach. Full article

Background/Objectives: We compared short- and long-term outcomes of patients with native left-sided infective endocarditis (IE) confined to the valve leaflet (“simple”) versus those with perivalvular extension (“complex”) over two decades. Methods: From 2005 to 2024, 177 patients (mean age 59.6 ± 13.8 years, 71.8% male) underwent surgery for IE. Patients were classified as having simple (n = 129) or complex IE (n = 48) based on imaging and intraoperative findings. Mean follow-up was 86.5 ± 63.3 months (range: 2–232 months). Outcomes included operative and late mortality, recurrent infection, and reoperation. Results: Complex IE was associated with worse preoperative status, longer ICU stays, and mechanical ventilation times. Predictors of early mortality included critical preoperative state (OR 6.35, p = 0.001), chronic renal failure/dialysis (OR 3.01, p = 0.05), and staphylococcal IE (OR 5.62, p = 0.002) but not perivalvular extension. Overall survival at 1, 5, 10, 15, and 20 years was 83%, 74.2%, 59.9%, 51.3%, and 40.7%, with no significant difference between groups (p = 0.18). Female gender (HR 1.93, p = 0.04) and chronic renal failure (HR 3.5, p < 0.01) predicted late mortality. Freedom from re-endocarditis and reoperation d/t relapse of endocarditis was 94.2% and 97.3%, respectively. Freedom from re-intervention d/t structural valve degeneration was 92.1% at 10 years. Repair was performed in 28.2% of cases involving the mitral valve, with 93.1% freedom from reoperation. Conclusions: Surgery for complex IE is not an independent risk factor for long-term mortality. Rates of recurrent endocarditis and reoperation are remarkably low. Excellent durability of bioprostheses and mitral repair was demonstrated. Full article

Background: Down syndrome (DS) is associated with unique anatomical and physiological characteristics that complicate the perioperative management of infants undergoing cardiac surgery. While ventricular septal defect (VSD) repair is commonly performed in this population, detailed data comparing perioperative outcomes in DS versus non-syndromic infants remain limited. Methods: This retrospective matched study analysed 100 infants (50 with DS and 50 without DS) who underwent isolated VSD closure between January 2021 and January 2025. Patients were matched by age and surgical date. Intraoperative anesthetic management, complications, postoperative outcomes, and mortality were compared between groups. Results: DS patients had lower age, weight, and height at surgery. They required significantly smaller endotracheal tube sizes, more intubation and vascular access attempts. The DS group had significantly lower rates of extubation in the operating room and experienced longer durations of mechanical ventilation and ICU stay. However, no significant differences were observed in total hospital stay or mortality between groups. Conclusions: Although DS infants present with increased anesthetic complexity and respiratory challenges, they do not exhibit higher surgical mortality following isolated VSD closure. Tailored perioperative strategies may improve respiratory outcomes in this high-risk group. Full article

Background/Objectives: Lung-protective ventilation (LPV) reduces postoperative pulmonary complications (PPCs) in obese patients. While the roles of low tidal volume and positive end-expiratory pressure (PEEP) in LPV have been established in patients with healthy lungs, the protective effect of alveolar recruitment strategies (ARSs) remains a subject of debate. This study aims to evaluate the benefit of ARSs in patients with low-to-moderate risk according to the Assess Respiratory Risk in Surgical Patients in Catalonia (ARISCAT) score undergoing gynecologic cancer surgery with LPV and low tidal volume intraoperatively. Methods: A total of 88 obese patients were evaluated in this study. They were divided into two groups as the non-ARS group (non-ARS) and the ARS group (ARS). Intraoperative hemodynamics, blood gas analyses, respiratory mechanics, mechanical ventilator parameters, and postoperative outcomes were compared in these obese patients. Results: A total of 40 obese patients undergoing major gynecological cancer surgery were included in this study. Although the non-ARS group presented with higher weight (p < 0.05), body mass indexes were similar to the ARS group. Intraoperative blood gas analysis revealed higher end-tidal carbon dioxide (etCO₂) levels in the non-ARS group during the T2 and T3 time intervals (p < 0.05). In the ARS group, peak inspiratory pressure (PIP) at T3 was lower, while drive pressures at T1 and T2 and dynamic compliance at T3 were higher (p < 0.05). Radiologic atelectasis scores were higher in the non-ARS group, indicating more atelectatic lung images (p < 0.05). PPC rates were similar across both groups. Conclusions: Although the ARS demonstrated positive effects on lung mechanics and radiologic atelectasis scores in major open gynecologic cancer surgeries, it did not effectively reduce postoperative pulmonary complications. Full article

Background: Cytoreductive surgery (CS) and hyperthermic intraperitoneal chemotherapy (HIPEC) increases survival in peritoneal carcinomatosis, but complications may affect the long-term prognosis. We aimed to evaluate the postoperative evolution after CS + HIPEC, the appearance of adverse outcomes, and the associated risk factors. Methods: This was a retrospective observational study evaluating clinical practice in patients undergoing CS + HIPEC from 2016 to 2023 in a tertiary-level university hospital. The pre-, intra-, and postoperative variables were collected. The postoperative evolution, the appearance of postoperative complications, and the mortality were analyzed according to the perioperative data. Results: In total, 62.3% of the patients developed some kind of complication. Renal failure was related to the length of surgery [mean difference (md) 111 min, 95% CI 11–210, p = 0.029], postoperative vasoactive support [Odds Ratio (OR) 3.4, 95% CI 1.1–10.6, p = 0.033], and non-invasive mechanical ventilation (OR 5.5, 95% CI 1.5–20.5, p = 0.007). Respiratory failure was associated with renal replacement therapies (OR 13.8, 95% CI 1.3–143.9, p = 0.006), postoperative creatinine (md 0.27 mg·dL⁻¹, 95% CI 0.1–0.4, p = 0.001), and C-reactive protein (md 33.5 mcg·L⁻¹, 95% CI 0.1–66.8, p = 0.049). Infectious complications were related to the length of surgery (md 84 min, 95% CI 12–156, p = 0.024), non-invasive mechanical ventilation (OR 4.4, 95% CI 1.2–16.1, p = 0.018), and renal replacement therapies (OR 11.6, 95% CI 1.1–119.6, p = 0.012). The hospital stay was longer in patients with complications (md 14.8 ± 5.5 days, 95% CI 3.8–25.8, p = 0.009). The mortality rate at 12 months was 15.6%. The mortality risk factors were the preoperative hemoglobin (md −1.7 g·dL⁻¹, 95% CI −2.8–−0.7, p = 0.001) and creatinine (md −0.12 mg·dL⁻¹, 95% CI −0.21–−0.04, p = 0.007) and the postoperative hemoglobin (md −1.15 g·dL⁻¹, 95% CI 0.01–2.30, p = 0.049) and C-reactive protein (md 54.6 mcg·L⁻¹, 95% CI 18.5–90.8, p = 0.004). Intraoperative epidural analgesia was found to be a protective factor for 12-month mortality (OR 0.25, 95% CI 0.07–0.90 p = 0.027). A multivariate analysis performed after a univariate analysis showed that the only risk factor for overall mortality was not using intraoperative epidural analgesia. Conclusions: CS + HIPEC led to a high incidence of postoperative complications, but the occurrence of complications did not seem to affect postoperative survival. Full article

Background/Objectives: Surgical procedures in chronic obstructive pulmonary disease (COPD) patients carry a high risk of postoperative respiratory failure, often causing the need for mechanical ventilation and prolonged intensive care unit (ICU) stays. Accompanying COPD with heart failure further increases the risk of complications. This study aimed to identify predictors of mortality, prolonged ICU and hospital stays, the need for mechanical ventilation, and vasoactive drug usage in ICU patients with moderate to severe COPD undergoing elective non-cardiac surgery. Methods: This retrospective cohort study analyzed eICU-CRD data, including adult patients with moderate to severe COPD admitted to the ICU from the operating room following elective non-cardiac surgery. Spearman’s correlation analysis was performed to assess associations between intraoperative ventilation parameters and ICU/hospital length of stay, postoperative laboratory parameters, and their perioperative dynamics. Results: This study included 680 patients (21% with severe COPD). Hospital and ICU mortality were 8.6% and 4.4%, respectively. Median ICU and hospital stays were 1.9 and 6.6 days, respectively. Intraoperative tidal volume, expired minute ventilation, positive end-expiratory pressure, mean airway pressure, peak inspiratory pressure, and compliance had no statistically significant association with mortality, postoperative mechanical ventilation, its duration, or the use of vasopressors/inotropes. Tidal volume correlated positively with changes in monocyte count (R = 0.611; p = 0.016), postoperative lymphocytes (R = 0.327; p = 0.017), and neutrophil count (R = 0.332; p = 0.02). Plateau pressure showed a strong positive association with the neutrophil-to-lymphocyte ratio (R = 0.708; p = 0.001). Conclusions: Intraoperative ventilation modes and parameters in COPD patients appear to have no significant impact on the outcomes or laboratory markers, except possibly for the neutrophil-to-lymphocyte ratio, although its elevation cause remains unclear. Full article

Background: Hyperimmune response and cytokine release post-reperfusion might occur after orthotopic heart transplantation (HTx). Intraoperative hemoadsorption (HA) has been introduced to remove such elevated cytokines. We aimed to analyze the effect of intraoperative HA in patients undergoing orthotopic HTx. Methods: Between 2018 and 2022, 40 consecutive orthotopic HTx patients who underwent intraoperative hemoadsorption HA integrated into the cardiopulmonary bypass were compared to 41 historical controls. Primary outcome measures included postoperative hemodynamic stability and blood product requirements, while secondary outcomes were the incidence of acute kidney injury requiring dialysis (AKI-d) and 30-day mortality. Results: Postoperatively, the vasoactive-inotropic score (VIS) did not significantly differ between the groups. However, the use duration for milrinone and dobutamine was shortened by one day compared to controls. The HA group had fewer red blood cell transfusions (765 vs. 1330 mL, p = 0.01) and lower fresh frozen plasma requirements (945 vs. 1200 mL, p = 0.04). Mechanical ventilation duration was reduced (22 vs. 28 h, p = 0.02). AKI-d rates were similar, and 30-day mortality favored non-significantly the HA group (5% vs. 14.6%, p = ns). No device-related adverse events were observed. Conclusion: These findings suggest that intraoperative HA might improve immediate postoperative outcomes; however, further validation in larger randomized controlled trials is warranted. Full article

Background/Objectives: Managing ventilatory strategies in patients with obesity under general anesthesia presents significant challenges due to obesity-related pathophysiological changes. Inverse ratio ventilation (IRV) has emerged as a potential strategy to optimize respiratory mechanics during laparoscopic surgery in this population. The primary outcomes were changes in respiratory mechanics, including peak inspiratory pressure (P_Peak), plateau pressure (P_Plat), mean airway pressure (P_Mean), and dynamic compliance (C_Dyn). Secondary outcomes included gas exchange parameters, hemodynamic measures, inflammatory cytokines, and postoperative complications. Methods: A systematic review and meta-analysis were conducted, searching PubMed, Scopus, EMBASE, and PMC Central. Only English-language randomized controlled trials (RCTs) evaluating the impact of IRV in adult surgical patients with obesity were included. The quality and certainty of evidence were assessed using the Risk of Bias 2 (RoB 2) tool and the Grades of Recommendation, Assessment, Development, and Evaluation (GRADE) framework, respectively. Results: Three RCTs including 172 patients met the inclusion criteria. Compared to conventional ventilation without prolonged inspiratory time or IRV, IRV significantly reduced P_Peak (MD [95%CI]: −3.15 [−3.88; −2.42] cmH₂O, p < 0.001) and P_Plat (MD [95%CI]: −3.13 [−3.80; −2.47] cmH₂O, p < 0.001) while increasing P_Mean (MD [95%CI]: 4.17 [3.11; 5.24] cmH₂O, p < 0.001) and C_Dyn (MD [95%CI]: 2.64 [0.95; 4.22] mL/cmH₂O, p = 0.002) during laparoscopy, without significantly affecting gas exchange. IRV significantly reduced mean arterial pressure (MD [95%CI]: −2.93 [−3.95; −1.91] mmHg, p < 0.001) and TNF-α levels (MD [95%CI]: −9.65 [−17.89; −1.40] pg/mL, p = 0.021). Conclusions: IRV optimizes intraoperative respiratory mechanics but has no significant impact on postoperative outcomes, necessitating further research to determine its clinical role. Full article

Background: Frailty is increasingly being recognized as a risk factor for adverse outcomes in older surgical patients undergoing surgery. We investigated the association between frailty and intraoperative complications using multiple frailty assessment tools in older patients undergoing elective intermediate- to high-risk non-cardiac surgery. Methods: This retrospective cohort study included 637 older patients scheduled for elective non-cardiac surgery. Frailty was assessed using the Clinical Frailty Scale (CFS), FRAIL scale, and modified Frailty Index-11 (mFI-11). The predictive ability of frailty tools was analyzed and compared using the area under the receiver operating characteristic curve (AUC). Results: Frailty was significantly associated with higher intraoperative complication rates (FRAIL scale: p = 0.01; mFI-11: p = 0.046). Patients considered frail using the mFI-11 were more likely to have unplanned intensive care unit admissions (p < 0.001). Those classified as frail by the FRAIL scale and mFI-11 had significantly higher rates of vasopressor/inotrope use (p = 0.001 and p = 0.005, respectively) and mechanical ventilation (p = 0.033 and p = 0.007, respectively). In the univariate analysis, frailty measured using the FRAIL scale was significantly associated with intraoperative complications (odds ratio [OR], 2.41; 95% confidence interval [CI]: 1.33–4.38; p = 0.004); this association was not significant in the multivariate analysis (adjusted OR, 1.69; 95% CI: 0.83–3.43; p = 0.148; AUC = 0.550). Atrial fibrillation, hemoglobin levels, anesthesia type, and surgical subspecialty were stronger predictors of intraoperative complications. Conclusions: Frailty assessments demonstrate the limited predictive ability for intraoperative complications. Specific comorbidities, surgical techniques, and anesthesia types play more critical roles. Comprehensive preoperative evaluations integrating frailty with broader risk stratification methods are necessary to enhance patient outcomes and ensure safety. Full article