Improvement in Liver Transplant Outcomes From Older Donors: A US National Analysis.

OBJECTIVE: To investigate trends in long-term graft and patient outcomes following liver transplantation using grafts from donors ≥60 years old. SUMMARY BACKGROUND DATA: The scarcity of donor livers has led to increased utilization of organs from donors ≥60 years old. However, few studies have examined how long-term transplant outcomes from older donors have evolved over time. METHODS: The OPTN/UNOS database was queried for all first-time isolated adult liver transplants. We identified 14,796 adult liver transplant using donors ≧60-year-old suitable for analysis from 1990 to 2014. Cohorts were then developed based on 5-year intervals of transplant date. Kaplan-Meier analysis was used to compare graft and patient survival for recipients from older donor across each 5-year era. RESULTS: Utilization of donor grafts ≥60 years old increased steadily for the first 15 years of the study, but has leveled off over the last 10 years. Comparison of the earliest and latest eras in the study was notable for an increase in median recipient age (51 vs. 59, P < 0.001) and reduction in median cold ischemic time (10 vs. 6 h, P = 0.001). Unadjusted 5-year graft and patient survival has improved significantly over time (P < 0.0001). More importantly, the discrepancy in survival between older and younger grafts has narrowed substantially over time (P < 0.0001). CONCLUSIONS: This study demonstrates significant improvement in transplant outcomes with donor grafts ≥60-years old and supports increased but judicious use of extended criteria donors liver grafts. Improved patient selection and reduction in cold ischemia time appear to be contributing factors.

Effect of Obesity and Underweight Status on Perioperative Outcomes of Congenital Heart Operations in Children, Adolescents, and Young Adults: An Analysis of Data From the Society of Thoracic Surgeons Database.

BACKGROUND: Extreme body mass index (BMI; either very high or very low) has been associated with increased risk of adverse perioperative outcome in adults undergoing cardiac surgery. The effect of BMI on perioperative outcomes in congenital heart disease patients has not been evaluated. METHODS: A multicenter retrospective cohort study was performed studying patients 10 to 35 years of age undergoing a congenital heart disease operation in the Society of Thoracic Surgeons Congenital Heart Surgery Database between January 1, 2010, and December 31, 2015. The primary outcomes were operative mortality and a composite outcome (1 or more of operative mortality, major adverse event, prolonged hospital length of stay, and wound infection/dehiscence). The associations between age- and sex-adjusted BMI percentiles and these outcomes were assessed, with adjustment for patient-level risk factors, with multivariate logistic regression. RESULTS: Of 18 337 patients (118 centers), 16% were obese, 15% were overweight, 53% were normal weight, 7% were underweight, and 9% were severely underweight. Observed risks of operative mortality (P=0.04) and composite outcome (P<0.0001) were higher in severely underweight and obese subjects. Severely underweight BMI was associated with increased unplanned cardiac operation and reoperation for bleeding. Obesity was associated with increased risk of wound infection. In multivariable analysis, the association between BMI and operative mortality was no longer significant. Obese (odds ratio, 1.28; P=0.008), severely underweight (odds ratio, 1.29; P<0.0001), and underweight (odds ratio, 1.39; P=0.002) subjects were associated with increased risk of composite outcome. CONCLUSIONS: Obesity and underweight BMI were associated with increased risk of composite adverse outcome independently of other risk factors. Further research is necessary to determine whether BMI represents a modifiable risk factor for perioperative outcome.

Long-term Survival After Surgery Compared With Concurrent Chemoradiation for Node-negative Small Cell Lung Cancer.

OBJECTIVE: To determine whether surgery with adjuvant chemotherapy offers a survival advantage over concurrent chemoradiation for patients with cT1-2N0M0 small cell lung cancer (SCLC). BACKGROUND: Although surgery with adjuvant chemotherapy is the recommended treatment for patients with cT1-2N0M0 SCLC per international guidelines, there have been no prospective or retrospective studies evaluating the impact of surgery versus optimal medical management for cT1-2N0M0 SCLC. METHODS: Outcomes of patients with cT1-2N0M0 SCLC who underwent surgery with adjuvant chemotherapy or concurrent chemoradiation in the National Cancer Data Base (2003-2011) were evaluated using Cox proportional hazards analyses and propensity-score-matched analyses. RESULTS: During the study period, 681 (30%) patients underwent surgery with adjuvant chemotherapy and 1620 (70%) underwent concurrent chemoradiation. After propensity-score matching, all 14 covariates were well balanced between the surgery (n = 501) and concurrent chemoradiation (n = 501) groups. Surgery was associated with a higher overall survival (OS) than concurrent chemoradiation (5-year OS 47.6% vs 29.8%, P < 0.01). To minimize selection bias due to comorbidities, we limited the propensity-matched analysis to 492 patients with no comorbidities; surgery remained associated with a higher OS than concurrent chemoradiation (5-year OS 49.2% vs 32.5%, P < 0.01). CONCLUSIONS: In a national analysis, surgery with adjuvant chemotherapy was used in the minority of patients for early stage SCLC. Surgery with adjuvant chemotherapy for node-negative SCLC was associated with improved long-term survival when compared to concurrent chemoradiation. These results suggest a significant underuse of surgery among patients with early stage SCLC and support an increased role of surgery in multimodality therapy for cT1-2N0M0 SCLC.

Long-term results of endovascular repair for descending thoracic aortic aneurysms.

OBJECTIVE: Since thoracic endovascular aortic repair (TEVAR) received U.S. Food and Drug Administration approval for the treatment of descending thoracic aneurysms in March 2005, excellent 30-day and midterm outcomes have been described. However, data on long-term outcomes are lacking with Medicare data suggesting that TEVAR has worse late survival compared with open descending repair. As such, the purpose of this study was to examine the long-term outcomes for on-label use of TEVAR for repair of descending thoracic aneurysms. METHODS: Of 579 patients undergoing TEVAR between March 2005 and April 2016 at a single referral center for aortic surgery, 192 (33.2%) were performed for a descending thoracic aneurysm indication in accordance with the device instructions for use, including 106 fusiform (55.2%), 80 saccular (41.7%), and 6 with both saccular and fusiform (3.1%) aneurysms. All aneurysms were located distal to the left subclavian artery and proximal to the celiac axis, and hybrid procedures including arch or visceral debranching were excluded with the exception of left carotid-subclavian artery bypass. Aortic dissection and intramural hematoma as indications for TEVAR were also excluded. Primary 30-day and in-hospital outcomes included mortality, stroke, need for new permanent dialysis, and permanent paraparesis or paraplegia. Primary long-term outcomes included survival and rate of reintervention secondary to endoleak. The Kaplan-Meier method was used to estimate long-term overall and aorta-specific survivals. RESULTS: The mean age was 71.1 ± 10.4 years. All aneurysms in this series were degenerative in nature and no patients with a connective tissue disorder were included. The mean aortic diameter was 5.9 ± 1.5 cm at time of intervention. Rates of 30-day and in-hospital mortality, stroke, permanent dialysis, and permanent paraparesis and paraplegia were 4.7%, 2.1%, 0.5%, and 0.5%, respectively. At a mean follow-up of 69 ± 44 months (range, 3-141 months), there were 68 late deaths (35.4%), two of which were due to aortic rupture. Overall and aorta-specific survivals at 141 months (11.8 years) were 45.7% and 96.2%, respectively. Endovascular reintervention was required in 14 patients (7.3%) owing to type I (n = 10), type II (n = 2), and type III (n = 2) endoleak, all of which subsequently resolved. No patient required open reintervention for any cause. CONCLUSIONS: Long-term (12-year) aorta-specific survival after on-label endovascular repair of degenerative descending thoracic aneurysms in nonsyndromic patients is excellent (96%) with sustained protection from rupture, and a low rate of reintervention owing to endoleak (7%). Endovascular repair should be considered the treatment of choice for this pathology.

Elevated donor hemoglobin A1c does not impair early survival in cardiac transplant recipients.

BACKGROUND: Orthotopic heart transplantation (OHT) is the gold-standard therapy for end-stage heart failure. An increasing deficit between suitable allograft availability and clinical demand for OHT exists. The role of donor diabetes mellitus (DM) on post-transplant recipient outcomes in OHT is controversial. The purpose of this study was to examine donor hemoglobin A1c (HbA1c) levels to identify the impact of donor glycemic control on recipient survival. METHODS: Adult OHT recipients with donor HbA1c data were identified in the UNOS database from 2010 to 2015. Recipients were stratified on the basis of donor glycemic status: Hyperglycemic-donor and euglycemic-donor cohorts were defined as HbA1c levels ≥6.5% and <6.5%, respectively. Outcomes were compared between unadjusted and propensity-matched hyperglycemic versus euglycemic donors. Primary end point was three-year survival. RESULTS: Of 5342 OHT recipients, 208 (3.89%) received an allograft from a hyperglycemic donor and 5134 (96.1%) received an allograft from a euglycemic donor. There was no significant difference in survival in the hyperglycemic group before (P=.87) or after (P=.78) propensity matching. CONCLUSIONS: No difference in four-year survival was noted in recipients who received allografts from hyperglycemic donors. These results suggest that recent cumulative donor glycemic status alone may not be an important predictor of recipient outcomes.

Elevated HbA1c in donor organs from patients without a diagnosis of diabetes portends worse liver allograft survival.

Recipients of liver allografts from diabetic donors have decreased graft survival. However, limited data exist on the effects of donor HbA1c. We hypothesized that allografts from nondiabetic donors with elevated HbA1c would be associated with decreased survival. Liver transplant recipients from the UNOS database from nondiabetic donors were stratified into two groups: euglycemic (HbA1c<6.5) and hyperglycemic (HbA1c≥6.5). Propensity score matching (10:1) was used to adjust for donor and recipient characteristics. Kaplan-Meier analysis was used to assess survival. Donors of hyperglycemic allografts were older (49 vs 36, P<.001), were more likely to be non-white, had a higher BMI (29.8 vs 26.2, P<.001), were more likely to engage in heavy cigarette use (1.5% vs 1.3%, P=.004), had higher serum creatinine levels (1.3 vs 1.0, P=.002), and were more likely to be an expanded-criteria donor (35.8% vs 14.4%, P<.001). After propensity matching to account for these differences, allograft survival was significantly decreased in the recipients of hyperglycemic allografts (P=.049), and patient survival showed a trend toward reduction (P=.082). These findings suggest that HbA1c may be a simple and inexpensive test with potential utility for better organ risk stratification.

Transplant size mismatch in restrictive lung disease.

To maximize the benefit of lung transplantation, the effect of size mismatch on survival in lung transplant recipients with restrictive lung disease (RLD) was examined. All single and bilateral RLD lung transplants from 1987 to 2011 in the United Network for Organ Sharing (UNOS) Database were identified. Donor predicted total lung capacity (pTLC):Recipient pTLC ratio (pTLCr) quantified mismatch. pTLCr was segregated into five strata. A Cox proportional hazards model evaluated the association of pTLCr with mortality hazard. To identify a critical pTLCr, a Cox model using a restricted cubic spline for pTLCr was used. A total of 6656 transplants for RLD were identified. Median pTLCr for single orthotopic lung transplant (SOLT) and bilateral orthotopic lung transplant (BOLT) was 1.0 (0.69-1.47) and 0.98 (0.66-1.45). Examination of pTLCr as a categorical variable revealed that undersizing (pTLCr <0.8) for SOLT and moderate oversizing (pTLCr = 1.1-1.2) for SOLT and BOLT had a harmful survival effect [for SOLT pTLC <0.8: HR 1.711 (95% CI 1.146-2.557), P = 0.01 and for BOLT pTLC 1.1-1.2: HR 1.717 (95% CI 1.112-2.651), P = 0.02]. Spline analysis revealed significant changes in SOLT mortality by variation of pTLCr between 0.8-0.9 and 1.1-1.2. RLD patients undergoing SOLT are susceptible to detriments of an undersized lung. RLD patients undergoing BOLT have higher risk of mortality when pTLCr falls between 1.1 and 1.2.

Long-term outcomes of aortic root operations in the United States among Medicare beneficiaries.

OBJECTIVE: The best method of aortic root repair in older patients remains unknown given a lack of comparative effectiveness of long-term outcomes data. The objective of this study was to compare long-term outcomes of different surgical approaches for aortic root repair in Medicare patients using The Society of Thoracic Surgeons Adult Cardiac Surgery Database-Centers for Medicare & Medicaid Services-linked data. METHODS: A retrospective cohort study was performed by querying the Society of Thoracic Surgeons Adult Cardiac Surgery Database for patients aged 65 years or more who underwent elective aortic root repair with or without aortic valve replacement. Primary long-term end points were mortality, any stroke, and aortic valve reintervention. Short-term outcomes and long-term survival were compared among each root repair strategy. Additional risk factors for mortality after aortic root repair were assessed with a multivariable Cox proportional hazards model. RESULTS: A total of 4173 patients aged 65 years or more underwent elective aortic root repair. Patients were stratified by operative strategy: mechanical Bentall, stented bioprosthetic Bentall, stentless bioprosthetic Bentall, or valve-sparing root replacement. Mean follow-up was 5.0 (±4.6) years. Relative to mechanical Bentall, stented bioprosthetic Bentall (adjusted hazard ratio, 0.80; confidence interval, 0.66-0.97) and stentless bioprosthetic Bentall (adjusted hazard ratio, 0.70; confidence interval, 0.59-0.84) were associated with better long-term survival. In addition, stentless bioprosthetic Bentall (adjusted hazard ratio, 0.64; confidence interval, 0.47-0.80) and valve-sparing root replacement (adjusted hazard ratio, 0.51; confidence interval, 0.29-0.90) were associated with lower long-term risk of stroke. Aortic valve reintervention risk was 2-fold higher after valve-sparing root replacement compared with other operative strategies. CONCLUSIONS: In the Medicare population, there was poorer late survival and greater late stroke risk for patients undergoing mechanical Bentall and a higher rate of reintervention for valve-sparing root replacement. Bioprosthetic Bentall may be the procedure of choice in older patients undergoing aortic root repair, particularly in the era of transcatheter aortic valve replacement.

Hospital-level compliance with the commission on cancer's quality of care measures and the association with patient survival.

BACKGROUND: Quality measurement has become a priority for national healthcare reform, and valid measures are necessary to discriminate hospital performance and support value-based healthcare delivery. The Commission on Cancer (CoC) is the largest cancer-specific accreditor of hospital quality in the United States and has implemented Quality of Care Measures to evaluate cancer care delivery. However, none has been formally tested as a valid metric for assessing hospital performance based on actual patient outcomes. METHODS: Eligibility and compliance with the Quality of Care Measures are reported within the National Cancer Database, which also captures data for robust patient-level risk adjustment. Hospital-level compliance was calculated for the core measures, and the association with patient survival was tested using Cox regression. RESULTS: Seven hundred sixty-eight thousand nine hundred sixty-nine unique cancer cases were included from 1323 facilities. Increasing hospital-level compliance was associated with improved survival for only two measures, including a 35% reduced risk of mortality for the gastric cancer measure G15RLN (HR 0.65, 95% CI 0.58-0.72) and a 19% reduced risk of mortality for the colon cancer measure 12RLN (HR 0.81, 95% CI 0.77-0.85). For the lung cancer measure LNoSurg, increasing compliance was paradoxically associated with an increased risk of mortality (HR 1.14, 95% CI 1.08-1.20). For the remaining measures, hospital-level compliance demonstrated no consistent association with patient survival. CONCLUSION: Hospital-level compliance with the CoC's Quality of Care Measures is not uniformly aligned with patient survival. In their current form, these measures do not reliably discriminate hospital performance and are limited as a tool for value-based healthcare delivery.

Risk for non-home discharge following surgery for ischemic mitral valve disease.

OBJECTIVES: To determine the frequency and risk factors for non-home discharge (NHD) and its association with clinical outcomes and quality of life (QOL) at 1 year following cardiac surgery in patients with ischemic mitral regurgitation (IMR). METHODS: Discharge disposition was evaluated in 552 patients enrolled in trials of severe or moderate IMR. Patient and in-hospital factors associated with NHD were identified using logistic regression. Subsequently, association of NHD with 1-year mortality, serious adverse events (SAEs), and QOL was assessed. RESULTS: NHD was observed in 30% (154/522) with 25% (n = 71/289) in moderate and 36% (n = 83/233) in patients with severe IMR (unadjusted P = .006), a difference not significant after including age (5-year change: adjusted odds ratio [adjOR], 1.52; 95% confidence interval [CI], 1.35-1.72; P < .001), diabetes (adjOR, 1.94; 95% CI, 1.27-2.94; P = .002), and previous heart failure (adjOR, 1.64; 95% CI, 1.06-2.52; P = .03). Odds of NHD were increased for patients with postoperative SAEs (adjOR, 1.85; 95% CI, 1.19-2.86; P = .01) but not based on type of cardiac surgery. Greater rates of death and SAEs were observed in NHD patients at 1 year: adjusted hazard ratio, 4.29 (95% CI, 2.14-8.59; P < .001) and adjusted rate ratio, 1.45 (95% CI, 1.03-2.02; P = .03), respectively. QOL did not differ significantly between groups. CONCLUSIONS: NHD is common following surgery for IMR, influenced by older age, diabetes, previous heart failure, and postoperative SAEs. These patients may be at greater risk of death and subsequent SAEs after discharge. Discussion of NHD with patients may have important implications for decision-making and guiding expectations following cardiac surgery.

Variability in donor organ offer acceptance and lung transplantation survival.

BACKGROUND: Lung transplantation offers a survival benefit for patients with end-stage lung disease. When suitable donors are identified, centers must accept or decline the offer for a matched candidate on their waitlist. The degree to which variability in per-center offer acceptance practices impacts candidate survival is not established. The purpose of this study was to determine the degree of variability in per-center rates of lung transplantation offer acceptance and to ascertain the associated contribution to observed differences in per-center waitlist mortality. METHODS: We performed a retrospective cohort study of candidates waitlisted for lung transplantation in the US using registry data. Logistic regression was fit to assess the relationship of offer acceptance with donor, candidate, and geographic factors. Listing center was evaluated as a fixed effect to determine the adjusted per-center acceptance rate. Competing risks analysis employing the Fine-Gray model was undertaken to establish the relationship between adjusted per-center acceptance and waitlist mortality. RESULTS: Of 15,847 unique organ offers, 4,735 (29.9%) were accepted for first-ranked candidates. After adjustment for important covariates, transplant centers varied markedly in acceptance rate (9%-67%). Higher cumulative incidence of 1-year waitlist mortality was associated with lower acceptance rate. For every 10% increase in adjusted center acceptance rate, the risk of waitlist mortality decreased by 36.3% (sub-distribution hazard ratio 0.637; 95% confidence interval 0.592-0.685). CONCLUSIONS: Variability in center-level behavior represents a modifiable risk factor for waitlist mortality in lung transplantation. Further intervention is needed to standardize center-level offer acceptance practices and minimize waitlist mortality.

Relationship of Body Mass Index With Outcomes After Transcatheter Aortic Valve Replacement: Results From the National Cardiovascular Data-STS/ACC TVT Registry.

OBJECTIVE: To investigate the relationship of body mass index (BMI) with short- and long-term outcomes after transcatheter aortic valve replacement (TAVR). PATIENTS AND METHODS: The relationship between BMI and baseline characteristics and procedural characteristics was assessed for 31,929 patients who underwent TAVR between November 1, 2011, and March 31, 2015, from the STS/ACC TVT Registry. Registry data on 20,429 patients were linked to the Centers for Medicare and Medicaid Services to assess the association of BMI with 30-day and 1-year mortality using multivariable Cox proportional hazards models. The effect of BMI on mortality was also assessed with BMI as a continuous variable. Restricted cubic regression splines were used to model the effect of BMI and to determine appropriate cut points of BMI. RESULTS: Among 31,929 patients, 806 (2.5%) were underweight (BMI, <18.5 kg/m2), 10,755 (33.7%) had normal weight (BMI, 18.5- 24.9 kg/m2), 10,691 (33.5%) were overweight (BMI, 25.0-29.9 kg/m2), 5582 (17.5%) had class I obesity (BMI, 30.0-34.9 kg/m2), 2363 (7.4%) had class II obesity (BMI, 35.0-39.9 kg/m2), and 1732 (5.4%) had class III obesity (BMI, ≥40 kg/m2). Patients in various BMI categories were different in most baseline and procedural characteristics. On multivariable analysis, compared with normal-weight patients, underweight patients had higher mortality at 30 days and at 1 year after TAVR (hazard ratio [HR], 1.35; 95% CI, 1.02-1.78 and HR, 1.41; 95% CI, 1.17-1.69, respectively), whereas overweight patients and those with class I and II obesity had a decreased risk of mortality at 1 year (HR, 0.88; 95% CI, 0.81-0.95, HR, 0.80; 95% CI, 0.72-0.89, and HR, 0.84; 95% CI, 0.72-0.98, respectively). For BMI of 30 kg/m2 or less, each 1-kg/m2 increase was associated with a 2% and 4% decrease in the risk of 30-day and 1-year mortality, respectively; for BMI greater than 30 kg/m2, a 1-kg/m2 increase was associated with a 3% increased risk of 30-day mortality but not with 1-year mortality. CONCLUSION: Results of this large registry study evaluating the relationship of BMI and outcomes after TAVR support the existence of an obesity paradox among patients with severe aortic stenosis undergoing TAVR.

Back stabber: ladder fall causing traumatic aortic transection.

A 68-year-old man presented with back pain after falling from a ladder and was found to have anterolisthesis of thoracic vertebrae T11-12 with secondary focal aortic injury and disruption of the aortic wall. This was successfully repaired using thoracic endovascular aortic repair (TEVAR) followed by spinal fusion with excellent result.

Simultaneous Versus Sequential Heart-liver Transplantation: Ideal Strategies for Organ Allocation.

BACKGROUND: Simultaneous heart-liver (SHL) transplantation is an efficacious therapeutic modality for patients with combined heart and liver failure. However, the extent to which heart transplantation followed by sequential liver transplantation (LAH) can match the benefit of simultaneous transplantation has not previously been examined. Our objective was to determine if LAH offers comparable survival to SHL. METHODS: The Organ Procurement and Transplantation Network/United Network for Organ Sharing Standard Transplant Analysis and Research file was queried for adult recipients waitlisted for both heart and liver transplantation. The United Network for Organ Sharing thoracic and liver databases were linked to facilitate examination of waitlist and transplant characteristics for simultaneously listed patients. Univariate survival analysis was used to determine overall survival. RESULTS: Of the 236 patients meeting inclusion criteria, 200 underwent SHL, 7 sequentially underwent LAH, and 29 received heart transplantation only (isolated orthotopic heart transplantation [iOHT]). Recipients of SHL were less likely to have an episode of acute rejection before discharge (LAH, 14.2%; SHL, 2.4%; iOHT, 3.6%; P = .019) or be treated for acute rejection within 1 year after transplantation (LAH, 14.3%; SHL, 2.5%; iOHT, 13.8%; P = .007). Otherwise, postoperative hospital length of stay, stroke, need for dialysis, and need for pacemaker placement were comparable across groups. Ten-year survival similarly favored both LAH and SHL over iOHT (LAH: 100%, 71.4%, 53.6%; SHL: 87.1%, 80.4%, 52.1%, iOHT: 70.1%, 51.6%, 27.5% for 1-, 5-, and 10-year survivals, respectively, P = .003). However, median time between heart and liver transplant was 302 days in patients undergoing sequential transplantation. CONCLUSIONS: Although transplantation in a simultaneous or sequential fashion yields equivalent outcomes, a high fraction of patients undergoing initial heart transplant alone fail to proceed to subsequent liver transplantation. Therefore, in patients with combined heart and liver failure with a projected need for 2 allografts, simultaneous transplantation is associated with maximum benefit.

Elevated Donor Hemoglobin A1C Impairs Kidney Graft Survival From Deceased Donors With Diabetes Mellitus: A National Analysis.

OBJECTIVES: Kidney transplant is the optimal therapy for patients with end-stage renal disease. The presence of donor diabetes mellitus is a recognized risk factor for impaired kidney graft survival and is incorporated into the Kidney Donor Profile Index. At present, however, there are limited assessments of the severity of this risk factor. Hemoglobin A1c reflects glycemic control over the preceding 3 months, and we hypothesized that donor hemoglobin A1c levels could confer additional discriminatory power in assessments of deceased donors with diabetes mellitus. MATERIALS AND METHODS: The United Network for Organ Sharing/Organ Procurement and Organ Transplantation Network Standard Transplant Analysis Research file was queried for adult deceased-donor kidney transplants performed using allografts from donors with diabetes mellitus who had measurements of hemoglobin A1c before donation. RESULTS: The study cohort consisted of 1518 kidney transplants performed using allografts from deceased donors with diabetes mellitus. Kaplan-Meier survival analysis and log-rank test were performed to compare survival of grafts from donors with diabetes mellitus with elevated (≥ 6.5%) versus lower (< 6.5%) hemoglobin A1c levels. Graft survival at 5 years was significantly lower for recipients of donors with hemoglobin A1c ≥ 6.5% (58.9% vs 68.3%; P < .001). On multivariate analysis, hemoglobin A1c ≥ 6.5% was an independent predictor of diminished graft survival. CONCLUSIONS: Hemoglobin A1c has potential as an additional discriminatory test for estimating outcomes of grafts from donors with diabetes mellitus and should be routinely measured in this population.

Pacemaker Implantation After Mitral Valve Surgery With Atrial Fibrillation Ablation.

BACKGROUND: The incidence of permanent pacemaker (PPM) implantation is higher following mitral valve surgery (MVS) with ablation for atrial fibrillation (AF) compared with MVS alone. OBJECTIVES: This study identified risk factors and outcomes associated with PPM implantation in a randomized trial that evaluated ablation for AF in patients who underwent MVS. METHODS: A total of 243 patients with AF and without previous PPM placement were randomly assigned to MVS alone (n = 117) or MVS + ablation (n = 126). Patients in the ablation group were further randomized to pulmonary vein isolation (PVI) (n = 62) or the biatrial maze procedure (n = 64). Using competing risk models, this study examined the association among PPM and baseline and operative risk factors, and the effect of PPM on time to discharge, readmissions, and 1-year mortality. RESULTS: Thirty-five patients received a PPM within the first year (14.4%), 29 (83%) underwent implantation during the index hospitalization. The frequency of PPM implantation was 7.7% in patients randomized to MVS alone, 16.1% in MVS + PVI, and 25% in MVS + biatrial maze. The indications for PPM were similar among patients who underwent MVS with and without ablation. Ablation, multivalve surgery, and New York Heart Association functional (NYHA) functional class III/IV were independent risk factors for PPM implantation. Length of stay post-surgery was longer in patients who received PPMs, but it was not significant when adjusted for randomization assignment (MVS vs. ablation) and age (hazard ratio [HR]: 0.81; 95% confidence interval [CI]: 0.61 to 1.08; p = 0.14). PPM implantation did not increase 30-day readmission rate (HR: 1.43; 95% CI: 0.50 to 4.05; p = 0.50). The need for PPM was associated with a higher risk of 1-year mortality (HR: 3.21; 95% CI: 1.01 to 10.17; p = 0.05) after adjustment for randomization assignment, age, and NYHA functional class. CONCLUSIONS: AF ablation, multivalve surgery, and NYHA functional class III/IV were associated with an increased risk for permanent pacing. PPM implantation following MVS was associated with a significant increase in 1-year mortality. (Surgical Ablation Versus No Surgical Ablation for Patients With Atrial Fibrillation Undergoing Mitral Valve Surgery; NCT00903370).

Outcomes of Planned Two-Stage Hybrid Aortic Repair With Dacron-Replaced Proximal Landing Zone.

BACKGROUND: Results of hybrid arch repair (HAR) using the native zone 0 proximal landing zone (PLZ) have been unsatisfactory in many series, especially in the setting of ascending aortic dilation (>4.0 cm). This study reports early and late outcomes of planned two-stage HAR with open first-stage proximal aortic replacement, followed by second-stage thoracic endovascular aortic repair (TEVAR) with PLZ within the Dacron-replaced zone 0. METHODS: Between January 2006 and August 2017, 34 patients underwent planned two-stage HAR. The first-stage proximal aortic replacement included ascending aorta (with or without valve, with or without root) and total arch replacement, which was performed with creation of an elephant trunk in 22 patients (65%) and without an elephant trunk in 12 (35%). Primary outcomes included 30-day/in-hospital results and Kaplan-Meier estimates of overall/aorta-specific survival and freedom from reintervention. RESULTS: Mean age was 59 ± 12 years. Both stages of repair were completed in a single hospitalization in 53% of patients, including operations done since January 2012. The 30-day/in-hospital rates of mortality, stroke, permanent paraparesis/plegia, and new dialysis were 6%, 3%, 0%, and 0%, respectively. Kaplan-Meier overall and aorta-specific survivals at 5 years were 63% and 94%, respectively, with 5-year freedom from reintervention of 78%. CONCLUSIONS: Planned two-stage HAR with open first-stage proximal aortic replacement, followed by second-stage TEVAR with Dacron-replaced PLZ yields excellent short-term and long-term results, including low rates of reintervention likely due to the long-segment PLZ within the Dacron-replaced aorta. The technique should be considered in patients with even mild (>4.0 cm) ascending aortic dilation in whom HAR is otherwise the preferred treatment option.

Long-term outcomes of surgical resection for stage IV non-small-cell lung cancer: A national analysis.

OBJECTIVE: Treatment guidelines recommend surgical resection in select cases of stage IV non-small-cell lung cancer (NSCLC) but are based on limited evidence. This study evaluated outcomes associated with surgery in stage IV disease. METHODS: Factors associated with survival of stage IV NSCLC patients treated with surgery in the National Cancer Date Base (2004-2013) were evaluated using multivariable Cox proportional hazards analyses. Outcomes of the subset of patients with cT1-2, N0-1, M1 and cT3, N0, M1 disease treated with surgery or chemoradiation were evaluated using Kaplan-Meier analyses. RESULTS: The five-year survival of all stage IV NSCLC patients who underwent surgical resection (n=3098) was 21.1%. Outcomes were related to the locoregional extent of the primary tumor, as both increasing T status (T2 HR 1.30 [p<0.001], T3 HR 1.28 [p<0.001], and T4 HR 1.28 [p<0.001], respectively, compared to T1) and nodal involvement (N1 HR 1.34 [p<0.001], N2 HR 1.50 [p<0.001], and N3 HR 1.49 [p<0.001], respectively, compared to N0) were associated with worse survival. Outcomes were also related to the extent of surgical resection, as pneumonectomy (HR 1.58, p<0.001), segmentectomy (HR 1.36, p=0.009), and wedge resection (HR 1.70, p<0.001) were all associated with decreased survival when compared to lobectomy. The five-year survival of cT1-2, N0-1, M1 and cT3, N0, M1 patients was 25.1% (95% CI: 22.8-27.5) after surgical resection (n=1761) and 5.8% (95% CI: 5.2-6.5) after chemoradiation (n=8180). CONCLUSIONS: Surgery for cT1-2, N0-1, M1 or cT3, N0, M1 disease is associated with a 5-year survival of 25% and does not appear to compromise outcomes when compared to non-operative therapy, supporting guidelines that recommend surgery for very select patients with stage IV disease. However, surgery provides less benefit and should be considered much less often for stage IV patients with mediastinal nodal disease or more locally advanced tumors.

Associations Between Unplanned Cardiac Reinterventions and Outcomes After Pediatric Cardiac Operations.

BACKGROUND: After pediatric heart operations, we sought to determine the incidence of unplanned cardiac reinterventions during the same hospitalization, assess risk factors for these reinterventions, and explore associations between reinterventions and outcomes. We hypothesized that younger patients undergoing more complex operations would be at greater risk for unplanned cardiac reinterventions and that operative mortality and postoperative length of stay (PLOS) would be greater in patients who undergo reintervention than in those who do not. METHODS: Patients aged 18 years or younger in The Society of Thoracic Surgeons Congenital Heart Surgery Database (January 2010 to June 2015) were included. We used multivariable regression to evaluate risk factors for unplanned cardiac reintervention (operation or therapeutic catheterization) and associations of reintervention with operative mortality and PLOS. RESULTS: Of 84,404 patients (117 centers), 21% were neonates and 36% infants. An unplanned cardiac reintervention was performed in 5.4% of patients, including 11.8% of neonates, 5.2% of infants, and 2.8% of children. Independent risk factors for unplanned reintervention included presence of noncardiac anomalies/genetic syndromes, nonwhite race, younger age, lower weight among neonates and infants, prior cardiothoracic operations, preoperative mechanical ventilation, other Society of Thoracic Surgeons preoperative risk factors, and higher Society of Thoracic Surgeons-European Association for Cardiothoracic Surgery Mortality Category (adjusted p < 0.001 for all). Unplanned reintervention was a risk factor for operative mortality (adjusted odds ratio, 5.3; 95% confidence interval, 4.8 to 5.8; p < 0.001) and longer PLOS (adjusted relative risk, 2.3; 95% confidence interval, 2.2 to 2.4; p < 0.001). CONCLUSIONS: Unplanned cardiac reinterventions are not rare, particularly in neonates, and are independently associated with operative mortality and increased PLOS. Patients at greater risk may be identified preoperatively, presenting opportunities for quality improvement.