The influence of gender on mortality in patients after thoracic endovascular aortic repair

Five-year sex-related outcomes of thoracic endovascular aortic repair in the Global Registry for Endovascular Aortic Treatment

OBJECTIVE

The impact of sex on outcomes of thoracic endovascular aortic repair (TEVAR) represents an area of increased interest over the last decade, and long-term data are lacking. The aim of the present study was to investigate sex-related differences in long-term outcomes after TEVAR using real-world data from the Global Registry for Endovascular Aortic Treatment.

METHODS

Data were obtained retrospectively after querying the multicenter, sponsored Global Registry for Endovascular Aortic Treatment. Patients treated with TEVAR between December 2010 and January 2021 were selected regardless of the type of thoracic aortic disease. The primary outcome was sex-specific all-cause mortality at 5 years and maximum follow-up. Secondary outcomes were sex-specific all-cause mortality at 30 days and 1 year, and aorta-related mortality, major adverse cardiac events, neurological complications, and device-related complications or reinterventions at 30 days, 1 year, 5 years, and maximum follow-up.

RESULTS

A total of 805 patients were analyzed; 535 (66.5%) were males. Females were older (median, 66 years [interquartile range (IQR), 57-75 years] vs 69 years [IQR, 59-78 years], P < .001). Males had more frequently a history of coronary artery bypass grafting and renal insufficiency (8.7% vs 3.7% [P = .010] and 22.4% vs 11.6% [P < .001]). The median follow-up was 3.46 years (IQR, 1.49-4.99 years) for males and 3.18 years (IQR, 1.29-4.86 years) for females. Indications for TEVAR were mostly descending thoracic aortic aneurysms (n = 307 [38.1%]) type B aortic dissections (n = 250 [31.1%]) or others (n = 248 [30.8%]). Freedom from 5-year all-cause mortality was similar for males and females (67% [95% CI, 62.1-72.2] vs 65.9% [95% CI, 58.5-74.2]; P = .847), and there were no differences in secondary outcomes. Multivariable Cox regression showed females to have lower all-cause mortality rates; however, this difference did not reach statistical significance (hazard ratio, 0.97; 95% CI, 0.72-1.30; P = .834). Additional subgroup analyses based on the indication for TEVAR did not identify differences between both sexes for the primary and secondary outcomes except more endoleak type II in females with complicated type B aortic dissection (1.8% vs 12.1%; P = .023).

CONCLUSIONS

The present analysis suggests that long-term outcomes of TEVAR performed irrespective of the type of aortic disease are similar for males and females. Further studies are needed to clarify existing controversies regarding the impact of sex on outcomes of TEVAR.

Long-Term Outcomes after Thoracic Endovascular Aortic Repair Using Chimney Grafts for Aortic Arch Pathologies: 10 Years of Single-Center Experience

BACKGROUND

This study reports the early- and long-term outcomes of the thoracic endovascular aortic repair using the Chimney-Graft technique (ChTEVAR) for the treatment of aortic arch pathologies.

METHODS

From January 2010 to December 2019, patients who underwent aortic ChTEVAR technique in our institution were included. Early, mid, and long-term outcomes in this group of patients were evaluated. Patient follow-up data were obtained by imaging follow-up that are routinely performed after 3-6 months following initial surgery and then at yearly intervals.

RESULTS

Aortic arch repair with a ChTEVAR was performed in 54 patients. The 30-day mortality was 18.5% (n = 10). All-cause 30-day mortality was higher in the subgroup of patients operated urgently (33% vs. 14%) without a significant difference (P = 0.141). Permanent neurological deficit (PND) was observed in 15% (8/54 patients); stroke in 11% (6/54), and paraplegia 4% (2/54). During follow-up the primary and primary-assisted chimney-graft patency was 96.8% and 97.8%, respectively. The multivariate analysis identified the age >70 years and the aortic diameter as independent risk factors for elevated mortality during the follow-up (P = 0.015 and 0.001, respectively). The PND was an independent predictor for 30-day mortality (P = 0.014, hazard ratio 13.5, 95% confidence interval 1.7-106.6).

CONCLUSIONS

The ChTEVAR has noninferior results to other open and endovascular aortic arch repair methods with an acceptable long-term survival especially in elective procedures.

Postoperative Complications Following Orthopedic Spine Surgery: Is There a Difference Between Men and Women?

Background

Patient sex is known to affect outcomes following surgery. Prior studies have not specifically examined sex-stratified outcomes following spine surgery. The objective is to determine the differences between men and women in terms of 30-day complications following spine surgery.

Methods

The National Surgical Quality Improvement Program database was queried for patients undergoing spine surgery from 2005 to 2014. Postoperative data were analyzed to determine the differences between men and women with regard to 30-day complications.

Results

A total of 41 315 patients (49.0% women, 51% men) were analyzed. Men were more likely to have diabetes (P = .004) and be active smokers (P < .001). Women were more likely to be taking steroids for chronic conditions (P < .001). Postoperatively, women were at increased risk for superficial surgical site infection, urinary tract infection, transfusions, and longer length of stay, whereas men were at increased risk of pneumonia and reintubation. On multivariate analysis, women were associated with urinary tract infections (odds ratio = 2.17) and transfusions (odds ratio = 1.63).

Conclusions

Differences in complications are evident between men and women following spine surgery. These differences should be considered during preoperative planning and when consenting patients for surgery.

Level of Evidence

4.

Impact of Gender on 30-Day Complications After Primary Total Joint Arthroplasty

BACKGROUND

Impact of gender on 30-day complications has been investigated in other surgical procedures but has not yet been studied in total hip arthroplasty (THA) or total knee arthroplasty (TKA).

METHODS

Patients who received THA or TKA from 2012 to 2014 were identified in the National Surgical Quality Improvement Program database. Patients were divided into 2 groups based on gender. Bivariate and multivariate analyses were performed to assess associations between gender and patient factors and complications after THA or TKA and to assess whether gender was an independent risk factor.

RESULTS

THA patients consisted of 45.1% male and 54.9% female. In a multivariate analysis, female gender was found to be a protective factor for mortality, sepsis, cardiovascular complications, unplanned reintubation, and renal complications and as an independent risk factor for urinary tract infection, blood transfusion, and nonhome discharge after THA. TKA patients consisted of 36.7% male and 62.3% female. Multivariate analysis revealed female gender as a protective factor for sepsis, cardiovascular complications, and renal complications and as an independent risk factor for urinary tract infection, blood transfusion, and nonhome discharge after TKA.

CONCLUSION

There are discrepancies in the THA or TKA complications based on gender, and the multivariate analyses confirmed gender as an independent risk factor for certain complications. Physicians should be mindful of patient's gender for better risk stratification and informed consent.

Female sex independently predicts mortality after thoracic endovascular aortic repair for intact descending thoracic aortic aneurysms

OBJECTIVE

Whereas sex differences in the pathogenesis, presentation, and outcomes of repair for abdominal aortic aneurysms are well studied, less is known about sex differences after thoracic endovascular aortic repair (TEVAR). The goal of this study was to evaluate the association between sex and morbidity and mortality after TEVAR.

METHODS

A retrospective review of all TEVARs in the Society for Vascular Surgery Vascular Quality Initiative (VQI) registry from 2011 to 2015 was conducted, excluding those with dissection, trauma, and rupture. Statistical analysis was performed using the Fisher exact test and the Mann-Whitney U test for categorical and continuous variables. Multivariable logistic regression and Cox hazards modeling were used to account for differences in demographics, comorbidities, and aneurysm characteristics in 30-day mortality and long-term survival.

RESULTS

We identified 2574 patients (40% women) who underwent TEVAR. Women were older, were less likely to be white, and had smaller aortic diameters but larger aortic size indices (aortic diameter/body surface area). Women also had more chronic obstructive pulmonary disease but less coronary artery disease and fewer coronary interventions. Women were more likely to be symptomatic at presentation and subsequently to have a nonelective procedure. Women had higher estimated blood loss >500 mL (20% vs 17%; P = .04), were more likely to be transfused (29% vs 21%; P < .001), and more frequently underwent iliac access procedures (4.3% vs 2.1%; P < .01). Operative time and left subclavian intervention were similar. Postoperatively, women had increased median hospital (5 vs 4 days; P < .001) and intensive care unit (2.5 vs 2 days; P < .001) lengths of stay and were less likely to be discharged home (75% vs 86%; P < .001). Mortality was higher for women at 30 days (5.4% vs 3.3%; P < .01) and 1 year (9.8% vs 6.3%; P < .01). After adjusting for age, aortic size index, symptoms, and comorbidities, female sex remained independently predictive of 30-day mortality (odds ratio, 1.5; 95% confidence interval, 1.1-2.1, P < .01) and long-term mortality (hazard ratio, 1.3; 95% confidence interval, 1.03-1.6; P = .02).

CONCLUSIONS

Even after adjusting for differences in age and comorbidities, female patients have higher perioperative mortality and lower long-term survival after TEVAR. These findings, along with the rupture risk by sex, should be considered by clinicians in determining the timing of intervention.

Impact of Gender on 30-Day Complications After Adult Spinal Deformity Surgery

STUDY DESIGN

Retrospective study of prospectively collected data.

OBJECTIVE

To determine if postoperative morbidity for patients undergoing spinal deformity surgery varies by sex.

SUMMARY OF BACKGROUND DATA

Influence of sex has been investigated in other surgical procedures but has not yet been studied in adult spinal deformity surgery.

METHODS

The American College of Surgeons National Surgical Quality Improvement Program is a large multicenter clinical registry that prospectively collects preoperative risk factors, intraoperative variables, and 30-day postoperative morbidity and mortality outcomes from about 400 hospitals nationwide. Current Procedural Terminology codes were used to query the database for adults who underwent fusion for spinal deformity. Patients were separated into groups of male and female sex. Univariate analysis and multivariate logistic regression were used to analyze the effect of sex on the incidence of postoperative morbidity and mortality.

RESULTS

Female sex was found to be a predictor of any complication[odds ratio (OR): 1.4, 95% confidence interval (CI) 1.2-1.7, P < 0.0001], intra- or postoperative RBC transfusion (OR: 1.6, 95% CI 1.4-1.9, P < .0001), urinary tract infection (OR: 2.0, 95% CI 1.2-3.3, P = 0.0046), and length of stay >5 days (OR: 1.3, 95% CI 1.1-1.5, P = 0.0015). Male sex was associated with higher rate of pulmonary (2.9% vs. 2.0%, P = 0.0344) and cardiac complications (0.9% vs. 0.5%, P = 0.0497). However, male sex as an independent risk factor for pulmonary (OR: 1.4, 95% CI 1.0-2.1, P = 0.0715) and cardiac complications (OR: 1.9, 95% CI 0.9-4.0, P = 0.1076) did not reach significance.

CONCLUSION

Female sex was found to increase overall morbidity, particularly for urinary tract infection, transfusion, and length of stay >5 days. Male sex was associated with greater incidence of pulmonary and cardiac complications. Thus, sex and other patient characteristics highlighted must be considered as part of surgical risk planning and patient counseling.

LEVEL OF EVIDENCE

3.