The latest medical research on Cardiothoracic Surgery
The research magnet gathers the latest research from around the web, based on your specialty area. Below you will find a sample of some of the most recent articles from reputable medical journals about cardiothoracic surgery gathered by our medical AI research bot.
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Request AccessComparison of open and hybrid endovascular repair for aortic arch: a multi-Centre study of 1052 adult patients.
Cardiothoracic SurgeryWe aimed to evaluate early and late outcomes by comparing open total arch repair and endovascular arch repair using proximal landing zone analysis in a multicentre cohort.
From 2008 to 2019, patients treated surgically for aortic arch disease at six centres were included, excluding cases with type A aortic dissection, additional aortic root replacement, and extensive aortic aneurysm. In all patients and populations with proximal landing zone 0/1 (N = 144) and 2 (N = 187), early and late outcomes were compared using propensity score matching.
A total of 1052 patients, including 331 (31%) and 721 (69%) undergoing endovascular arch repair and open total arch repair, respectively, were enrolled. After propensity score match (endovascular arch repair, 295, open total arch repair; 566), no significant difference was observed in in-hospital mortality rate (endovascular arch repair, 6.8%, open total arch repair, 6.2%; p = 0.716). Open total arch repair was associated with a lower risk of all-cause death (log-rank test; p = 0.010, hazard ratio 1.41 [95% confidence interval: 1.17-1.71]). The incidence of aorta-related death was higher in endovascular arch repair (Gray test; p = 0.030, hazard ratio; 1.44 [95% confidence interval; 1.20-1.73]). When compared to endovascular arch repair with proximal landing zone 0/1, open total arch repair was associated with lower risks of all-cause death (log-rank test; p < 0.001, hazard ratio; 2.04 [95% confidence interval; 1.43-2.90]) and aorta-related death (Gray's test; p = 0.002, hazard ratio; 1.67 [95% confidence interval; 1.25-2.24]). There was no difference in the risk of all-cause death (log-rank test; p = 0.961, HR; 0.99 [95% confidence interval; 0.67-1.46]) and aorta-related death (Gray's test; p = 0.55, hazard ratio; 1.31 [95% confidence interval; 1.03-1.67]) between endovascular arch repair with proximal landing zone 2 and open total arch repair.
Open total arch repair was considered the first choice based on early and late results; however, endovascular arch repair may be a useful option if the proximal landing zone is limited to zone 2.
Validation of Artificial Intelligence-Based POTTER Calculator in Emergency General Surgery Patients Undergoing Laparotomy: Prospective, Bi-Institutional Study.
Journal of theThe POTTER calculator, a widely used interpretable artificial intelligence (AI) risk calculator, has been validated in population-based studies and shown to predict outcomes in emergency general surgery (EGS) patients better than surgeons. We sought to prospectively validate POTTER.
Patients undergoing an emergency exploratory laparotomy for non-trauma indications at two Academic Medical Centers between June 2020 and March 2022 were included. POTTER preoperative risk calculations and postoperative outcomes were systematically recorded. POTTER's performance in predicting 30-day postoperative mortality, septic shock, respiratory failure, bleeding, and pneumonia was assessed using the c-statistic methodology.
A total of 361 patients were included. The median age was 63 years (IQR: 51-72), 45.4% were females, and the overall mortality and morbidity were 24.1% and 51.4%, respectively. POTTER predicted mortality accurately with a c-statistic of 0.90. POTTER also accurately predicted the occurrence of individual postoperative complications, with c-statistics ranging between 0.80 and 0.89.
This is the first prospective validation of the AI-enabled POTTER calculator. The superior accuracy, user-friendliness, and interpretability of POTTER make it a useful bedside tool for preoperative patient and family counseling.
Simple Trocar Placement for Robotic Liver and Pancreatic Surgery: Multiple Access Devices at 5-cm Single Umbilicus Incision with 2 Robotic Ports.
Journal of theRobotic trocars are recommended to be placed 6-8 cm apart, and assistant trocars are placed 7 cm away from the horizontal line of the robotic trocar placement. However, adhering to these rules may be difficult, particularly in lean patients. This study aims to demonstrate our standardized simple trocar placement, 5-cm single umbilicus incision + 2 ports for robotic liver resection (RLR) and robotic pancreaticoduodenectomy (RPD).
During 2022-2024, patients undergoing RLR and RPD at The University of Tokyo were identified from a prospectively maintained database. Our standardized trocar placement consisted of multiple access devices at the 5-cm umbilicus incision, including two robotic trocars and one assistant trocar, and two other robotic trocars inserted to shape a hemi-circle around the surgical object.
A total of 29 and 31 consecutive patients underwent RLR and RPD, respectively. The 5-cm single umbilicus incision + 2 ports method was used in 82.8% of patients undergoing RLR and 100% of patients undergoing RPD. No patients undergoing RLR developed hepatic insufficiency and bile leakage with the median postoperative hospital stay of 5 days. No patients undergoing RPD developed clinically relevant pancreatic fistula, delayed gastric emptying, and bile leakage with the median postoperative hospital stay of 8 days.
Our standardized trocar placement technique is simple and widely feasible for lean-to-obese patients, allowing for RLR and RPD while minimizing incisions for patients.
Luminal shape and aortic remodelling after total arch replacement for type A aortic dissection: conventional and frozen elephant trunks.
Cardiothoracic SurgeryThis study was performed to assess postoperative aortic remodelling (AR) after total arch replacement (TAR) for acute type A aortic dissection (AAD) with a frozen elephant trunk (FET) or conventional elephant trunk (cET). Furthermore, the shape of the residual true lumen (TL) was analyzed based on elliptical Fourier analysis (EFA) and evaluated as a predictor of AR.
This study involved patients who underwent TAR with a cET or FET for AAD from December 2006 to January 2023 at five institutions. AR was assessed at the levels of the 4th thoracic vertebra (Th4), Th7, Th10, and above the coeliac trunk. The shape of the residual TL at all four levels was analyzed based on EFA to calculate shape patterns as principal component (PC) values. Inverse probability of treatment weighting (IPTW) was performed for adjustment between the groups.
In total, 180 patients (88 with cET and 92 with FET) were enrolled. The complete AR rate, defined as false lumen remodelling throughout the entire descending thoracic aorta, was significantly higher in the FET than cET group (63.4% vs 32.0%, P = 0.0013). The IPTW-adjusted Fine-Gray regression model revealed that the mean PC2 (hazard ratio, 0.22; P < 0.001) and PC3 (hazard ratio, 0.24; P = 0.009) of the four levels were independent predictors of complete AR.
In AAD repair, the AR rate was significantly higher with use of the FET than cET. The shape patterns of the residual TL can be an important reference for predicting postoperative AR.
Comparison between invasive cardiac output and left ventricular assist device flow parameter.
Cardiothoracic SurgeryEvaluate the correlation between left ventricular assist device flow parameter and invasive cardiac output measurements.
We retrospectively evaluated right heart catheterization examinations performed in left ventricular assist device patients from 2 tertiary medical centers. We evaluated the correlation between cardiac output measurement methods (indirect Fick and thermodilution) and pump flow parameter using linear regression, agreement was graphically displayed using Bland-Altman plot technique. Clinical, echocardiographic, pump and haemodynamic parameters were compared between patients with and without discordance, defined as at least 20% difference between measurements.
The study population consisted of 102 patients (median age 58 [51-64], 86% males, 17 ± 12 months post left ventricular assist device implantation) with a total of 544 measurement compared. Discordance between measurements were present in 102 of 226 (45%) comparisons between indirect Fick and pump flow and in 72 of 161 (48%) between thermodilution and pump flow. A comparison of indirect Fick and left ventricular assist device exhibited a statistical correlation of R = 0.751, and that of thermodilution and left ventricular assist device of R = 0.789. Parameters associated with the presence of discordance between cardiac output measurements included a higher rate of aortic valve opening, lower indirect Fick and higher thermodilution cardiac output. After excluding the lowest tertile of indirect Fick cardiac output values, the correlation between measurements improved (thermodilution: R = 0.879 and indirect Fick: R = 0.843, p < 0.001).
The current left ventricular assist device flow parameter provides an estimation of cardiac output that correlates well with indirect Fick and exhibits the strongest correlation with thermodilution. This correlation was stronger after excluding lower cardiac output values.
Early outcomes of robotic versus video-thoracoscopic anatomical segmentectomy: a propensity score-matched real-world study.
Cardiothoracic SurgeryMinimally invasive anatomic segmentectomy for the resection of pulmonary nodules has significantly increased in the last years. Nevertheless, there is limited evidence on the safety and feasibility of robotic segmentectomy compared to video-assisted thoracic surgery. This study aimed to compare the real-world early outcomes of robotic and video-thoracoscopic in anatomic segmentectomy.
Single centre cohort study including all consecutive patients undergoing segmentectomy by either robotic or video-thoracoscopic from June 2018 to November 2023. Propensity score case matching analysis generated two matched groups undergoing robotic or video-thoracoscopic segmentectomy. Short-term outcomes were analysed and compared between groups.
204 patients (75 robotic and 129 video-thoracoscopic patients) were included. After matching, 146 patients (73 cases in each group) were compared. One 30-day death was observed in the robotic group (P = 1). Two conversions to thoracotomy occurred in the robotic, and none in the video-thoracoscopic group (P = 0.5). Surgical time was longer in the robotic group (P = 0.091). There were no significant differences between robotic and video-thoracoscopic groups in postoperative complications (13.7% vs 15.1%, P = 1), cardiopulmonary complications (6.8% vs 6.8%, P = 1), major complications (4.1% vs 4.1%, P = 1), prolonged air leak (4.1% vs 5.5%, P = 1), arrythmia (1.4% vs 0%, P = 1) and reoperation (2.7% vs 2.7%, P = 1). Median length of stay was 3 days (IQR, 2-3 days) in the robotic group vs 3 days (IQR, 2.5-4 days) in the video-thoracoscopic group (P = 0.212).
Robotic segmentectomy is a safe and feasible alternative to video-thoracoscopy, as no significant differences in early postoperative outcomes were found between the two techniques.
Improvement in patient selection, management, and outcomes in infant heart transplant from 2000 to 2020.
Cardiothoracic SurgeryThe study's primary outcome was to evaluate if post-transplant survival has improved over the last two decades. Secondary outcomes were the infant's waitlist mortality, waitlist time, and identifying factors that affected the infant's survival.
United Network for Organ Sharing (UNOS) database was queried for infants (age ≤ 1) who were listed for heart transplantation between 2000-2020. The years were divided into three eras (Era 1 2000-2006, Era 2 2007-2013, and Era 3 2014-2020). Non-parametric tests, Chi-Squared, Log-Rank test, and Cox-Proportional hazard ratio were used for analysis (alpha = 0.05).
4234 infants were listed for heart transplants between 2000 and 2020. At the time of listing, Infants in era 3 were more likely to be heavier (in kg (p < 0.001) and had better renal function (p < 0.001). Additionally, they were less likely to be on dialysis (p < 0.001), on a ventilator (p < 0.001), and on ECMO (p < 0.001). There has been a significant increase in LVAD use (p < 0.001), though there was no difference in waitlist (0.154) or post-transplant survival (0.51). In all three eras, waitlist survival (p < 0.001) and post-transplant survival (p < 0.001) have improved significantly. CHD and ECMO were associated with worse waitlist survival in all three eras (p < 0.05). Infants are now waiting longer on the waitlist (in days) (33 Era 1 v. 46 Era 2 v. 67 Era 3, p < 0.001).
Infant heart transplant outcomes have improved, but they are now waiting longer on the waitlist. Further improvement in increasing the donor pool, expert consensus on listing strategies, and donor utilization is needed to improve outcomes.
How Well Are Surgical Quality Improvement Projects Planned? Review of 242 Surgical Improvement Efforts Across Five American College of Surgeons Quality Programs.
Journal of theStructured preparation is necessary to conduct quality improvement (QI) strategies that are relevant to the problem, feasible, appropriately resourced, and potentially effective. Recent work suggests improvement efforts are sub-optimally conducted. Our goal was to determine how well preparation for surgical QI is undertaken, including detailing the problem, setting project goals, and planning an intervention.
This retrospective cross-sectional study included QI efforts submitted in 2019 to the American College of Surgeons (ACS) during review for accreditation across five ACS Quality Programs: Children's Surgery Verification (CSV), the Commission on Cancer (CoC), the Metabolic and Bariatric Surgical Accreditation and Quality Improvement Program (MBSAQIP), the National Accreditation Program for Breast Centers (NAPBC), and the Trauma Verification Program. Projects were scored for alignment with three components of the pre-conduct phase of the ACS Quality Framework: problem detailing, goal specification, and strategic planning.
242 projects satisfied inclusion criteria and were scored. Most projects in the final cohort were from MBSAQIP (36%), CoC (31%), or NAPBC (29%) programs. The average overall pre-conduct score was 52% (Standard Deviation (SD)=17). On average, projects performed best in the 'Goal Specification' component (65% SD=27), followed by 'Problem Detailing' (52% SD=16), and 'Strategic Planning' (44% SD=25). Within these components, identification of possible limitations (5%) and consideration of contextual issues (12%) were among the least frequently reported items.
Thorough planning is a critical component of effective QI, and our study reflects significant opportunity for its improvement. The ACS Quality Framework may serve as a guide to improve QI planning, thereby promoting efficiency and effectiveness of these efforts.
Perspectives on Surgical Leadership: A Panel Discussion at the Society for Clinical Vascular Surgery.
Journal of theLeadership is a skill that all surgeons are confronted with in some capacity. Surprisingly in the US most training programs do not offer a structur...
Impact of 2023 Ventral Hernia Repair CPT Code Changes on Work Relative Value Units in a Tertiary Hernia Referral Center.
Journal of theCPT codes for ventral hernia repair (VHR) changed in January 2023 to address the heterogeneity of procedures with a concomitant shift from a 90-day to a 0-day global period. This study reviews a tertiary referral center's experience with hernia coding comparing the work relative value units (wRVUs) generated for ventral hernia repair pre-2023 compared to post-2023.
CPT codes were analyzed for patients undergoing open or laparoscopic VHR before updates to the CPT hernia codes (January 2022-September 2022) and following CPT change (January 2023-September 2023). Work RVU values were assigned based on nationally published values. CPT codes in 2022, CPT codes in 2023, 8 inpatient E&M codes, and 5 outpatient E&M codes were evaluated.
299 patients underwent VHR, 143 in 2022 and 156 in 2023. Average procedural VHR wRVUs increased from 9.6 in 2022 to 11.6 in 2023 (p<0.001). Procedures involving myofascial advancement flaps/component separation techniques (53.8% vs. 48.7%, p = 0.419) and wRVUs for the component separation procedures were similar between 2022 and 2023, respectively 17.7 vs 16.1 (p=0.419)]. The wRVUs associated with adjunctive procedures (mesh removal/placement) decreased from 3.3 to 0.6 (p<0.001) in the post-2023 era. Postoperative E&M wRVUs increased in 2023 for postoperative inpatient (0.48) and postoperative outpatient (0.39) services, compared to 0 wRVUs in 2022. Overall, the total management including follow-up clinic visit adjusted wRVUs for hernia repair was similar between 2022 and 2023, respectively 30.7 vs 29.2 (p=0.409).
Procedural wRVUs for anterior abdominal hernia repair increased from 2022 to 2023 (p<0.001) at a tertiary referral medical center. However, total wRVUs, including the operation and postoperative visits, remained unchanged.
The impact of large aneurysm diameter on the outcomes of thoracoabdominal aneurysm repair by fenestrated and branched endografts.
Cardiothoracic SurgeryAim of the study was to analyze the impact of preoperative thoraco-abdominal aneurysm diameter on the outcomes of fenestrated/branched endografting.
Patients underwent endovascular thoraco-abdominal repair at 2 European centers (2011-2021) were analyzed. Median diameter was calculated; third quartile was considered as cut-off. Outcomes were compared in two groups based on the diameter value. Primary end-points were technical success, spinal cord ischaemia and 30-day/in-hospital mortality. Survival, freedom-from-reintervention and target-visceral-vessels instability were follow-up outcomes.
Out of 247 thoraco-abdominal aortic aneurysms, the median diameter was 65 mm, first quartile was 57 mm; third quartile was 80 mm, set as cut-off value. Fifty-nine(24%) patients had diameter ≥80mm. Custom-Made and off-the-shelf branched endograft were used in 160(65%) and 87(35%), respectively. Technical success was 93% (<80mm : 91% vs ≥80mm : 94%; P:0.47). Twenty-three(9%) patients had spinal injury (<80mm : 7% vs ≥80mm : 17%; P:0.03). Twenty-two(9%) patients died within 30-day/in-hospital (<80mm : 7%; vs ≥80mm : 15%; P:0.06). Multivariate analysis did not report pre-operative diameter ≥80mm as significant risk factor for primary end-points. The median follow-up was 13 (interquartile-range : 2-37) months and at 3-years survival and freedom from reintervention rates were 65% and 62%, respectively. After univariate and multivariate analysis preoperative diameter ≥80mm was considered an independent risk factor for reinterventions (HR : 1.9; 95% CI : 1.1-3.6; P:0.04), and for target visceral vessels instability (HR : 3.1; 95% CI : 1.3-5.1; P:0.04), occurred in 45(18%) cases. However after competing risk methods preoperative diameter did not show significance for follow-up results.
A pre-operative thoraco-abdominal aortic aneurysm diameter greater than 80 mm has not a direct impact on early technical and clinical outcomes. Diameter ≥80mm is considered risk-factor for reinterventions and target-vessels instability considered separately during follow-up.
A comprehensive organ protection strategy in total arch replacement: a propensity-weighted analysis.
Cardiothoracic SurgeryTo report the outcomes and determine the effectiveness of a comprehensive organ protection strategy in total arch replacement.
A total of 350 patients who underwent total arch replacement were enrolled. 54 patients underwent the comprehensive organ protection strategy with bilateral antegrade cerebral perfusion (bACP) and aortic balloon occlusion (ABO) technique (comprehensive strategy group) and 296 patients underwent the standard strategy with unilateral antegrade cerebral perfusion (standard strategy group). Inverse probability of treatment weighting (IPTW) was used to balance the baseline characteristics.
After IPTW, the comprehensive strategy group had lower incidences of 30-day mortality (0.9% vs 4.9%, P = 0.002), continuous renal replacement therapy (CRRT) (0.6% vs 10.3%, P < 0.001), renal failure (4.6% vs 13.7%, P < 0.001), hepatic dysfunction (11.6% vs 21.1%, P = 0.001), and shorter duration of mechanical ventilation [16 (13, 31) vs 20 (14, 48) hours, P = 0.011]. Multivariable logistic analysis showed the comprehensive strategy was an independent protective factor of 30-day mortality (odds ratio (OR): 0.242, 95% confidence interval (CI): 0.068-0.867, P = 0.029), CRRT (OR: 0.045, 95% CI: 0.008-0.264, P = 0.001), renal failure (OR: 0.351, 95% CI: 0.156-0.788, P = 0.011), and mechanical ventilation >20 hours (OR: 0.531, 95% CI: 0.319-0.883, P = 0.015). Kaplan-Meier analysis showed mid-term survival was comparable.
The comprehensive organ protection strategy might improve early survival, reduce the use of CRRT, have protective effects on the kidney, and shorten mechanical ventilation time in total arch replacement. This strategy might be considered a viable alternative in total arch replacement.