Acute Type A Aortic Dissection Repair After Hours: Does It Influence Outcomes?

Weekend Effect and Mortality Outcomes in Aortic Dissection: A Prospective Analysis

Background

Aortic dissection (AD) is a critical heart condition with potentially severe outcomes. Our study aimed to investigate the existence of a "weekend effect" in AD by examining the correlation between patient outcomes and whether their treatment occurred on weekdays versus weekends.

Methods

Specifically, we prospectively analysed the effect of weekday and weekend treatment on acute AD patient outcomes, both before surgical intervention and during hospitalization, for 124 patients treated from 2019-2021, as well as during 6 months of follow-up.

Results

The mean age of the study population was 62.5 years, and patient age exhibited a high degree of variability. We recorded a mortality rate before surgery of 8.65% for the weekend group and 15% for the weekday group, but this difference was not statistically significant. During hospitalization, mortality was 50% in the weekend group and 25% in the weekday group, but this difference was not statistically significant. Discharge mortality was 9.61% in the weekend group and 5% in the weekday group.

Conclusions

Our findings suggest that there was no significant difference in mortality rates between patients admitted to the hospital on weekends versus weekdays. Therefore, the period of the week when a patient presents to the hospital with AD appears not to affect their mortality.

Off-hours Surgery and Mortality in Patients With Type A Aortic Dissection Repair: A Systematic Review and Meta-Analysis

BACKGROUND AND OBJECTIVES

The impact of off-hours admission (such as weekends, nighttime, and non-working hours) vs. regular hours (weekdays and daytime working hours) on the mortality risk of patients undergoing surgery for type A aortic dissection (TAAD) repair is still uncertain. To address this uncertainty, we undertook a comprehensive systematic review and meta-analysis. We aimed to assess the potential link between off-hours admission and the risk of mortality in patients undergoing TAAD repair surgery.

METHODS

We conducted a thorough search of the PubMed, Embase, and Cochrane Library databases, covering the period from their inception to May 20, 2023. Our inclusion criteria encompassed all studies that examined the potential relationship between off-hour admission and mortality in individuals who had undergone surgery for TAAD repair. The odds ratios (ORs) were extracted and combined utilizing a random effects model for our synthesis.

RESULTS

Nine studies with 16,501 patients undergoing TAAD repair surgery were included in the meta-analysis. Overall, patients who underwent surgery during the weekend had higher in-hospital mortality (pooled OR, 1.41; 95% confidence interval [CI], 1.14-1.75; p=0.002) than those treated on weekdays. However, the mortality risks among patients who underwent TAAD surgery during nighttime and non-working hours were not significantly elevated compared to daytime and working hours admission.

CONCLUSIONS

Weekend surgery for TAAD was associated with a higher in-hospital mortality risk than weekday surgery. However, further studies are warranted to identify and develop strategies to improve the quality of round-the-clock care for patients with TAAD.

Risk factors for postoperative acute kidney injury in overweight patients with acute type A aortic dissection

OBJECTIVE

To analyze the clinical characteristics of patients with overweight acute type A aortic dissection, and to explore the risk factors of acute kidney injury in patients with overweight acute type A aortic dissection.

METHODS

From March 2019 to February 2022, the clinical data of 71 patients with acute type a aortic dissection diagnosed by CTA and undergoing surgical treatment with BMI > 24 in the First People's Hospital of Yunnan Province were retrospectively analyzed, and analyzed by univariate and logistic multivariate analysis methods.

RESULTS

The mean BMI of all included patients was 27.23, The mean surface area of all included human populations was 1.833. The mean age of all patients was (52.06 ± 10.71) years old, and 35 patients developed acute kidney injury after surgery. Multi-factor Logistics regression analysis confirmed the risk factors for postoperative acute kidney injury in overweight patients with acute type A aortic dissection, including gender, CPB transit time and intraoperative infusion of suspended red blood cells. Seven patients in the AKI group died in hospital after surgery and two patients died in the non-AKI group.

CONCLUSIONS

Among patients with overweight acute Type A aortic dissection, the incidence of AKI is 49.30%. According to multi-factor Logistics regression analysis, gender, CPB transit time and intraoperative suspended red blood cell volume are independent risk factors for postoperative acute kidney injury in patients with overweight acute Type A aortic dissection.

Impact of after-hours surgery on outcomes of acute type A aortic dissection repair

PURPOSE

To establish whether emergency surgery performed outside working hours (after hours) contributed to adverse outcomes for patients with acute type A aortic dissection (ATAAD).

METHODS

We reviewed the operation records of ATAAD repair in our institution from 2004 to 2019 (n = 187). Emergency surgery was performed by one of a few teams of experienced surgeons, regardless of the time of day. Patients were divided into two groups based on the surgery start time: during working hours (n = 65) and after hours (n = 122). A propensity score-matched analysis was performed for 58 pairs of patients.

RESULTS

The overall in-hospital mortality was 6.9% for the working-hours group and 13.8% for the after-hours group. There were no significant differences between the groups in the relatively limited study population (n = 187). Surgeon experience and aortic interventions did not differ remarkably between the groups. After-hours repair was not associated with postoperative complications. There were no significant differences in the long-term survival or aortic event-free rates between the groups.

CONCLUSIONS

After-hours surgery did not affect the short- or long-term outcomes of ATAAD repair under our backup system, which supports the recommendation of immediate surgical repair. Efforts to minimize the discrepancies between working hours and after hours could help to improve the surgical outcomes of patients undergoing ATAAD repair.