Pulmonary Hypertension: A Contraindication for Lung Volume Reduction Surgery?

BACKGROUND: Historically, pulmonary hypertension (PH) has been considered as one of the contraindications for lung volume reduction surgery (LVRS). Newer studies have shown that LVRS is successful in select emphysema patients with PH. METHODS: In-hospital and 1-year functional and quality of life (QOL) outcomes were studied in patients with PH post-LVRS. PH was defined as pulmonary artery pressure (PAP) exceeding 35 mm Hg by right heart catheterization (RHC), where available, or else exceeding 35 mm Hg by echocardiogram. RESULTS: Of 124 patients who underwent LVRS, 56 (45%) had PH (mean PAP, 41 mm Hg) with 48 mild to moderate and 8 severe PH. In-hospital outcomes were similar between patients with and without PH: hours of artificial ventilation (1.8 vs 0.06, P = .882), days in intensive care (4 vs 6, P = .263), prolonged air leak (12% vs 19%, P = .402), and days of hospital stay (13 vs 16, P = .072). Lung function improved significantly at the 1-year follow-up in patients with PH: forced expiratory volume in 1 second % predicted (26 vs 38, P = .001), forced vital capacity % (62 vs 90, P = .001), residual volume % predicted (224 vs 174, P = .001), diffusion capacity of the lung for carbon monoxide % predicted (36 vs 43, P = .001), 6-minute walk distance test (1104 vs 1232 feet, P = .001), and QOL utility scores (0.67 vs 0.77, P = .001). There were no differences in in-hospital, baseline, and follow-up functional and QOL outcomes between patients with and without PH. CONCLUSIONS: In this small, single-institution cohort, outcomes of patients undergoing LVRS for emphysema with PH were similar to those of patients without PH. LVRS may be a potential option for select emphysema patients with PH.

Preoperative heart failure in the Medicare population undergoing mitral valve repair and replacement: an opportunity for improvement.

BACKGROUND: Elderly patients are under-represented in most surgical series of mitral valve surgery. The impact of preoperative heart failure (HF) on the outcomes of this subset has not been extensively studied. METHODS AND RESULTS: The study included 45,082 Medicare beneficiaries who underwent primary isolated mitral valve repair (MVP) (n=16,850) or replacement (MVR) (n=28,232) from 2000 to 2009. Medicare claims from the year before and the year of the index hospitalization were reviewed for documentation of HF to examine the operative mortality and long-term survival of patients with and without preoperative HF. Preoperative HF was present in 52.5% and 64.8% of patients who underwent repair and replacement, respectively. Duration of HF greater than 3 months was present in a significant proportion of patients (18.2% for MVP and 22.7% for MVR). Adjusted operative mortality was higher for patients with preoperative HF (MVP odds ratio [OR], 1.46; 95% confidence interval [CI], 1.21-1.78; MVR OR, 1.36; 95% CI, 1.23-1.51). Patients without preoperative HF had better long-term survival (MVP hazard ratio [HR], 2.23 [95% CI, 2.09-2.36]; MVR HR, 1.80 [95% CI, 1.73-1.86]). After adjustment, a preoperative HF diagnosis was still associated with 52% and 36% increased risk of death over the 10-year follow-up period for patients who underwent MVP and MVR, respectively. Preoperative HF duration greater than 3 months conferred an excess 28% higher risk of death on long-term follow-up compared with patients with HF less than 3 months. CONCLUSIONS: Preoperative HF is present in a large number of elderly patients undergoing primary isolated mitral valve surgery and adversely affects their short-term and long-term survival, irrespective of procedure type (repair or replacement). The study supports the early identification of elderly patients with mitral valve disease and referral to surgery before the onset of HF.

Mitral procedure selection in patients on dialysis: does mitral repair influence outcomes?

OBJECTIVE: To examine the likelihood of mitral valve repair among dialysis patients and the influence of mitral procedure selection on surgical outcomes in this cohort. METHODS: Among patients undergoing isolated primary mitral valve surgery in the Society of Thoracic Surgeons Adult Cardiac Surgery Database (2002-2010), we used logistic regression models to evaluate the following: (1) the likelihood of attempted and successful mitral repair among dialysis patients (2008-2010), and (2) the impact of mitral procedural selection on surgical mortality and composite mortality/major morbidity experienced by dialysis patients (2002-2010). Patients with endocarditis and those undergoing emergent or major concomitant surgeries were excluded. RESULTS: The study cohort consisted of 86,563 patients, of whom 1480 (1.7%) required preoperative dialysis. Dialysis patients had a high comorbid burden, including a high prevalence of congestive heart failure, stroke, diabetes, peripheral vascular disease, chronic obstructive pulmonary disease, and prior myocardial infarction. Dialysis-dependent patients had a lower propensity for mitral repair (44.6% vs 61.5%; P = .0010; adjusted odds ratio [OR], 0.69; 95% confidence interval [CI], 0.61-0.78); although the odds of successful repair (when attempted) were similar for dialysis versus nondialysis patients (OR, 0.87; 95% CI, 0.65-1.17). Compared with nondialysis patients, dialysis patients experienced a higher mortality rate (9.3% vs 2.3%; P < .0001; adjusted OR, 3.91; 95% CI, 3.17-4.81) and composite mortality or major morbidity (40.9% vs 15.9%; P < .0001; adjusted OR, 2.72; 95% CI, 2.41-3.07); however, adjustment for procedure selection did not substantially attenuate this effect (2.3% and 2.1% change-in-estimate for mortality and composite mortality/major morbidity, respectively). CONCLUSIONS: Dialysis patients undergo mitral repair less frequently, although repair success is equally likely when attempted among dialysis versus nondialysis patients. Dialysis-dependent renal failure is associated strongly with early mortality and major morbidity. However, procedure selection (repair vs replacement) does not appear to have a clinically meaningful impact on these short-term outcomes.

Type A intramural hematoma in the setting of acute type B aortic dissection.

Type A intramural hematoma (IMH) is an uncommon entity, the pathophysiology of which is thought to be related to a contained hemorrhage within the medial layer of the aorta as a result of either rupture of the vasa vasorum or an atherosclerotic plaque. We present a case of type A IMH in the setting of acute type B aortic dissection with suspicion for malperfusion syndrome and discuss the treatment algorithm of this uncommon entity.

Gender differences in long-term survival of Medicare beneficiaries undergoing mitral valve operations.

BACKGROUND: Gender disparities in outcomes have been documented in cardiac surgery. Gender differences in long-term survival after mitral valve operations, especially in the elderly, are less well studied. METHODS: Using Centers for Medicare and Medicaid Services data, we identified 183,792 Medicare beneficiaries aged 65 years and older who underwent mitral valve repair or replacement from 2000 through 2009. The final study population included 47,602 Medicare fee-for-service beneficiaries undergoing isolated mitral valve operations. The outcomes studied were gender-specific operative mortality and long-term survival. RESULTS: Women were less likely to receive mitral valve repair (31.9% vs 44.0%, p < 0.0001). The hospital mortality rate was 7.7% for women vs 6.1% for men (p < 0.0001), reflective of a worse preoperative profile. Women undergoing repair had worse long-term survival than men (p = 0.0020) but survival was similar after risk adjustment (hazard ratio, 0.97; 95% confidence interval, 0.92 to 1.02, p = 0.2106). Compared with the United States population matched for age and sex, mitral repair restored life expectancy for men but not for women. Unadjusted and adjusted long-term survival was similar for men and women undergoing mitral valve replacement (p = 0.3653; hazard ratio, 0.99; 95% confidence interval, 0.96 to 1.02; p = 0.4847). CONCLUSIONS: In this large comparative study of gender differences in mitral valve operations, elderly women had higher operative mortality and lower long-term survival. These differences appeared to be driven largely because women present for mitral valve operations later in the disease process. Mitral repair appeared to restore normal life expectancy for men but not for women. Future studies should examine the factors that influence physician referral to mitral valve operations for men and women.

Mitral valve procedure selection and outcomes in patients with rheumatoid arthritis.

BACKGROUND AND AIM OF THE STUDY: Cardiovascular disease is a frequent cause of death in patients with rheumatoid arthritis (RA). Valvular involvement is common, most frequently affecting the mitral valve. Whether RA is an additional risk factor for patients undergoing mitral surgery has not been studied. The study aim was to examine procedure selection and outcome in patients with RA compared to that in patients without RA. METHODS: The 2005-2008 NIS database was searched to identify patients aged > or = 18 years undergoing isolated mitral valve repair or replacement. Patients with and without RA were compared on their baseline characteristics and hospital outcomes. Within the subset of patients with RA, patients undergoing repair and replacement were compared. RESULTS: RA patients comprised 1.0% (710/70,969) of the population, and were older, more likely to be female, and had a higher Charlson comorbidity index. The repair rate for RA patients was lower (37.6% versus 45.5%, p = 0.0401). The hospital length of stay (OR = 1.27, 95% CI 0.88-1.82, p = 0.1946) and hospital mortality (OR = 0.57, 95% CI 0.19-1.72, p = 0.3081) were similar for patients with and without RA. Baseline characteristics were similar between mitral valve repair and replacement subsets. The median LOS was higher for replacement (10 days versus 7 days, p = 0.0242). Hospital mortality was similar for repair versus replacement (OR = 1.17, 95% CI 0.10-13.46, p = 0.8983). CONCLUSION: RA does not appear to be an additional risk factor for adverse outcome following isolated mitral valve surgery. Although repair rates were lower for patients with RA, hospital mortality was similar to that in patients without RA. Within the RA subset, hospital mortality rates between mitral valve repair and replacement were similar.

Long-term survival of patients undergoing mitral valve repair and replacement: a longitudinal analysis of Medicare fee-for-service beneficiaries.

BACKGROUND: Despite the established superiority of mitral repair over replacement, its adoption in the treatment of elderly patients has not been uniform, partly because of a lack of robust long-term survival data. We present the long-term survival of Medicare fee-for-service beneficiaries undergoing mitral valve repair and replacement over a 10-year period. METHODS AND RESULTS: We used the Medicare database to identify 47 279 fee-for-service beneficiaries ≥65 years of age undergoing primary isolated mitral valve repair or replacement from 2000 to 2009. Operative mortality and long-term survival are presented for repair and replacement. Operative mortality was 3.9% for patients undergoing repair and 8.9% for patients undergoing replacement. The 1-, 5-, and 10-year Kaplan-Meier survival estimates for patients undergoing repair were 90.9%, 77.1%, and 53.6%. The 1-, 5-, and 10-year Kaplan-Meier survival estimates for patients undergoing replacement were 82.6%, 64.7%, and 37.2%. Important predictors of mitral repair included younger age (odds ratio, 1.10; 95% confidence interval, 1.05-1.14), elective admission status (odds ratio, 1.34; 95% confidence interval, 1.27-1.41), and annual mitral procedure volume >40 cases per year (odds ratio, 1.57; 95% confidence interval, 1.36-1.81). Female sex and the presence of comorbidities were associated with a lower likelihood of repair. CONCLUSIONS: Mitral valve surgery in the Medicare population carries less risk than previously reported. Given the favorable outcomes of elderly patients undergoing mitral valve surgery, especially mitral valve repair, an approach of earlier identification and surgical referral appears justified regardless of age.

Relationship between patient income level and mitral valve repair utilization.

BACKGROUND: The superiority of mitral valve (MV) repair is well established with respect to long-term survival, preservation of ventricular function, and valve-related complications. The relationship between patient income level and the selection of MV procedure (repair versus replacement) has not been studied. METHODS: The 2005 to 2007 Nationwide Inpatient Sample database was searched for patients ≥ 30 years old with MV repair or replacement; patients with ischemic and congenital MV disease were excluded. Patients were stratified into quartiles according to income level (quartile 1, lowest; quartile 4, highest). We used univariate and multivariate models to compare patients with respect to baseline characteristics, selection of MV procedure, and hospital mortality. RESULTS: The preoperative profiles of the income quartiles differed significantly, with more risk factors occurring in the lower income quartiles. Unadjusted hospital mortality decreased with increasing income quartile. The percentage of patients receiving MV repair increased with increasing income (35.6%, 39.6%, 48.2%, and 55.8% for quartiles 1, 2, 3, and 4, respectively; P = .0001). Following adjustment for age, race, sex, urban residency, admission status, primary payer, Charlson comorbidity index, and hospital location and teaching status, the income quartiles had similar hospital death rates, whereas the highly significant relationship between valve repair and income level persisted (P = .0008). CONCLUSIONS: Significant disparity exists among patients in the different income quartiles with respect to the likelihood of receiving MV repair. MV repair is performed less frequently in patients with lower incomes, even after adjustment for differences in baseline characteristics. The higher unadjusted mortality rate for less affluent patients appears mostly related to their worse preoperative profiles.

Cost analysis of isolated mitral valve surgery in the United States.

BACKGROUND: Within the field of cardiac surgery, several strategies have been adopted in an effort to address contributors to increasing health care costs. Limited data are available on cost analysis within the field of mitral valve surgery. The purpose of our investigation was to analyze cost differences between mitral valve repair and replacement. METHODS: The analysis was based on the subset of patients with isolated mitral valve repair or replacement (International Classification of Diseases, ninth revision, clinical codes 35.12, 35.23, and 35.24) using data from the 2005 to 2008 Nationwide Inpatient Sample database, which is the largest all-payer database in the United States. We examined the selective contribution of patient demographics, hospital characteristics, and postoperative complications to cost by using hierarchical linear mixed models. We used mixed effects logistic regression models to identify factors that influence extreme cost expenditures in patients undergoing mitral valve surgery. RESULTS: Independent predictors of increased cost for both repair and replacement on multivariable analysis included increased age, prior myocardial infarction, heart failure, neurologic deficit, renal disease, emergent status, and Medicare or Medicaid insurance type. The presence of postoperative complications also predicted increased costs. However, the model for repair only yielded a reduction in variability of 13%, while the model for replacement produced a reduction of 22%. CONCLUSIONS: In this analysis, the most important contributors to cost for mitral valve repair and replacement are preoperative patient comorbidities, most notably history of myocardial infarction and heart failure, emergent admission status, and postoperative complications. The variables in our model failed to account for a large proportion of the variability in cost. This would suggest that future analyses exploring differential procedure costs between hospitals must look for factors beyond patient baseline characteristics and postoperative outcomes.

Impact of hospital annual mitral procedural volume on mitral valve repair rates and mortality.

BACKGROUND AND AIM OF THE STUDY: The aim of this investigation was to examine the impact of hospital annual mitral volume on mitral valve (MV) repair rates and mortality. METHODS: The 2005-2008 Nationwide Inpatient Sample (NIS) database was searched to identify patients who had undergone either MV repair (ICD-9-CM code 35.12) or MV replacement (ICD-9-CM codes 35.23 and 35.24). The hospitals were stratified into five categories based on the annual volume of all mitral procedures (< 10, 10-20, 21-40, 41-79, and > or = 80 cases/year). The relationship between hospital annual mitral procedure volume and MV repair rates, as well as hospital mortality for MV repair, was then examined for patients undergoing isolated MV surgery (excluding those aged < 30 years and those with congenital heart disease, concomitant coronary revascularization, ventricular aneurysm excision, heart transplant and other valvular interventions, except tricuspid). Chi-square tests of independence were used to test for differences between the mitral volume categories, and Cochran-Armitage tests to check for trends across the years. RESULTS: The sample included a total of 12,857 patients from 603 hospitals. Mitral repair rates increased as a function of hospital mitral volume, ranging from 34% for hospitals with < 10 mitral cases/year to 53% for hospitals with > or = 80 mitral cases/year. Follow up comparisons revealed that an annual mitral volume of > 40 cases/year was associated with a significantly higher rate of MV repair (p < 0.005). There was a significant trend of increasing MV repair rates over time for hospitals with annual mitral volumes of 20-40 and 41-79 cases/year (p = 0.0001). The MV repair mortality ranged from 1.33% to 2.29%, and did not differ among hospitals as a function of the annual mitral volume (p = 0.2982). CONCLUSION: Mortality after MV repair was low, and independent of the hospital annual mitral volume. A hospital annual mitral volume of fewer than 40 cases per year was associated with a lower rate of MV repair. Addressing the factors responsible for this finding constitutes an important area for future improvement in the care of patients with MV disease.

Geographic variation in procedure selection and hospital mortality in mitral valve surgery.

BACKGROUND AND AIM OF THE STUDY: There is paucity of data relating to the geographic variation in mitral valve (MV) repair trends and outcomes of patients undergoing MV surgery. METHODS: Using the 2005-2008 Nationwide Inpatient Sample (NIS) Database, the four geographic regions of the US (Northeast, Midwest, South, and West) were compared with respect to baseline characteristics, mitral procedure selection, and hospital mortality of patients undergoing either MV repair (ICD-9CM code 35.12) or replacement (ICD-9-CM codes 35.23 and 35.24). RESULTS: Patient age was similar across regions. The Midwest had the highest proportion of whites, while patients in the South were the least affluent. The Northeast had the highest proportion of patients presenting non-electively. The West and Midwest had more women and patients with private insurance compared to the South, but the proportion of patients on Medicaid was similar across all regions. The Northeast and the South had a higher Charlson Comorbidity Index compared to the West. The overall repair rate was 47%; the Midwest had the highest rate (50%), and the South the lowest (42%) (p = NS). Following adjustment for baseline characteristics, hospital mortality was similar among regions for patients undergoing MV replacement. For the subset undergoing MV repair, hospital mortality was more than 2.5-fold higher in the South than in the Northeast (OR = 2.88, 95% CI 1.45-5.71). CONCLUSION: MV repair is utilized in less than half of all mitral procedures nationwide. Repair rates and hospital mortality are comparable across all four regions in the US. Hospital mortality for isolated MV surgery is low. The higher adjusted mortality for patients undergoing MV repair in the South identifies an important area for future improvement in the care of patients with valvular heart disease.

Influence of systemic lupus erythematosus on procedure selection and outcomes of patients undergoing isolated mitral valve surgery.

BACKGROUND: Cardiovascular disease is the main cause of morbidity and mortality in patients with systemic lupus erythematosus (SLE). SLE as a risk factor for adverse outcomes during mitral surgery has not been studied. The purpose of this investigation was to compare procedure selection and outcomes of patients with and without SLE. METHODS: The 2005-2008 Nationwide Inpatient Sample database was searched to identify patients ≥18 years of age undergoing isolated mitral repair or replacement. Patients with and without SLE were compared on baseline characteristics and hospital outcomes. Within patients with SLE, those undergoing repair and replacement were compared. RESULTS: SLE patients comprised 0.9% (620/70,969) of the isolated mitral valve surgery population. Patients with SLE were significantly younger, more likely to be female, less likely to be white, had higher Charlson comorbidity index, and less often presented electively. Patients with SLE had a higher incidence of prolonged hospitalization (LOS > 10 days; 44.4% vs. 34.7%, p = 0.0392). Mortality was similar for patients with and without SLE undergoing isolated mitral valve surgery (OR = 0.76, 95% CI 0.28-2.05, p = 0.5821). Patients with SLE were less likely to have mitral valve repair (27.1% vs. 45.6%, p = 0.0002). Baseline characteristics were similar between SLE repair and replacement subsets. Median LOS was higher for replacement (10 days vs. 7 days, p = 0.0014). Hospital mortality was 0% for SLE mitral repair patients and <4.0% for SLE replacement patients. CONCLUSIONS: Patients with SLE present for isolated mitral valve surgery at a much younger age and with worse preoperative profiles. Although mitral repair rates were lower in patients with SLE, hospital outcomes were excellent, and comparable to those of patients without SLE.

Sternotomy or bilateral thoracoscopy: pain and postoperative complications after lung-volume reduction surgery.

OBJECTIVES: Video-assisted thoracoscopic surgery (VATS) and median sternotomy (MS) are two approaches in lung-volume reduction surgery (LVRS). This study focused on the two surgical approaches with regard to postoperative pain. METHODS: In this prospective, non-randomized study, pain was measured preoperatively and postoperatively using the visual analog scale (VAS) and the brief pain inventory (BPI). Incentive spirometry (IS) assessed restriction of the thoracic cage due to pain. Factors associated with treatment complications, medication usage, hospital stay, operating times, and chest-tube duration differences were examined between groups. RESULTS: Of 85 patients undergoing LVRS, 23 patients underwent reduction via MS and 62 patients via bilateral VATS. VAS scores revealed no difference in postoperative pain except for VAS scores on days 6 (PM) and 7 (PM). BPI scores yielded higher scores in the VATS group on postoperative day (POD) 1 in the reactive dimension, but no other overall differences. MS patients receiving tramadol consumed a higher mean amount than VATS patients on POD 5 and POD 6. IS change from baseline to postoperative were similar between groups, and increased pain correlated with decreased IS scores on POD 1. Chest-tube duration, complications, and pain medication were similar between groups. CONCLUSIONS: Bilateral VATS and MS offer similar outcomes with regard to postoperative pain and complications. These results suggest that the choice of LVRS operative approach should be dependent on disease presentation, surgeon expertise, and patient preference, not based upon differences in perceived postoperative pain between MS and bilateral VATS.

Morgagni hernia presenting as a right middle lobe compression.

A 25-year-old woman with a history of chronic bronchitis since age 12 and 3-4 previous episodes of pneumonia presented to the emergency room with cough and shortness of breath. A CT scan of her chest revealed findings consistent with Morgagni hernia with herniation of omental fat, causing near complete compressive atelectasis of the right middle lobe. The diaphragmatic defect was successfully treated with a laparoscopic repair. The patient was discharged home on the first postoperative day after tolerating regular diet.

Tricuspid valve surgery: the past 10 years from the Nationwide Inpatient Sample (NIS) database.

OBJECTIVES: The purpose of this study was to examine the trends in tricuspid valve surgery over time. METHODS: We used 10 years (1999-2008) of NIS data to examine the population of patients undergoing tricuspid valve repair or replacement (ICD-9-CM codes 35.14, 35.27, and 35.28). RESULTS: We identified 28,726 admissions for tricuspid valve surgery. The total number of tricuspid procedures more than doubled over the 10- year period (1712 cases in 1999 vs 4072 cases in 2008). Although the absolute number of repairs and replacements increased over time, the tricuspid repair rate increased whereas there was a corresponding decrease in tricuspid replacement rate. Isolated tricuspid valve surgery accounted for 20% of the total tricuspid cases, whereas tricuspid surgery as a concomitant procedure to other cardiac operations accounted for the remaining 80%. There was a trend toward increased use of tissue over mechanical valves for tricuspid replacement. Overall hospital mortality was 10.6%. Over time, mortality decreased significantly for both repair and replacement. Concomitant tricuspid replacement was associated with significantly higher hospital mortality than was isolated tricuspid replacement (16.1% vs 10.1%; P = .0001). CONCLUSIONS: There has been a dramatic increase in tricuspid interventions over time. This has been associated with an increase in tricuspid repair rates as well as use of bioprostheses for tricuspid replacement. The majority of tricuspid operations are performed concomitantly to other cardiac procedures. Mortality for tricuspid valve surgery remains considerable and significantly higher for replacement than for repair.

Mitral valve repair is underused in patients with hypertrophic obstructive cardiomyopathy.

BACKGROUND: The optimal surgical approach for patients with hypertrophic obstructive cardiomyopathy (HOCM) with concomitant mitral valve (MV) regurgitation has remained controversial. The purpose of this study was to use the largest all-payer database in the United States to examine the strategy most commonly used for the correction of mitral valve pathology in the setting of HOCM. METHODS: The Nationwide Inpatient Sample (NIS) database was searched from 2005 to 2008 to identify patients with a diagnosis of HOCM (ICD-9-CM code 425.1) who underwent MV repair (ICD-9-CM code 35.12) or replacement (ICD-9-CM codes 35.23 and 35.24). HOCM patients who underwent MV repair and those who underwent MV replacement were compared with respect to baseline characteristics, repair rates, hospital mortality, and length of stay (LOS). RESULTS: MV repair was performed in 17.2% of cases (219/1255). Repair rates did not show a significantly increasing trend over time (P = .1419). The median LOS was significantly longer for replacement than for repair (11 days versus 7 days, P = .0001). The mortality rate for patients who underwent repair was 0.00%, compared with 11.18% for those who underwent replacement (P < .05). CONCLUSIONS: The majority of patients with a HOCM diagnosis underwent MV replacement for the correction of MV pathology. Referral to centers with special expertise in treating patients with HOCM may positively affect the operative outcomes of this patient subset.

Sex differences in procedure selection and outcomes of patients undergoing mitral valve surgery.

BACKGROUND: There is a paucity of data on sex differences in procedure selection and outcomes of patients undergoing mitral valve surgery. METHODS AND RESULTS: The National Inpatient Sample database from 2005 to 2008 was searched to identify patients ≥30 years of age who underwent mitral valve repair or replacement (ICD-9-CM codes 35.12, 35.23, and 35.24). Women constituted 51.6% of the patients, and they were older, were less affluent, had higher values for the Charlson comorbidity index, and more often presented on an urgent/emergent basis. Women underwent repair less often than men (37.9% versus 55.9%, P < .001) and more often underwent concomitant tricuspid surgery or a Maze procedure. After adjustment for propensity scores, women were more likely to undergo replacement (odds ratio, 1.78; 95% confidence interval, 1.64-1.93; P = .0001), they had longer lengths of stay, and less favorable disposition. Among the patients who underwent mitral valve repair, women had a higher hospital mortality (2.06% versus 1.36%, P = .0328). After adjustment for propensity scores and concomitant procedures, this relationship was no longer statistically significant. CONCLUSIONS: Women are less likely than men to receive mitral valve repair. Although the higher hospital mortality of women presenting for mitral valve surgery was accounted for by their worse preoperative profiles, this sex disparity reflects the current reality in surgical practice and identifies an important area for future improvement in the care of patients with valvular heart disease.

Impact of race on mitral procedure selection and short-term outcomes of patients undergoing mitral valve surgery.

BACKGROUND: Racial disparity with respect to mitral valve (MV) surgery has been documented; however, previous reports have been limited by small numbers, focus on patients undergoing MV replacement only, or comparison of African-American patients to white patients. Using more recent data from the largest all-payer database in the United States, we examined whether type of mitral procedure performed was influenced by race and whether racial differences exist in baseline characteristics and short-term outcomes of patients undergoing mitral repair or replacement for MV disease. METHODS: Using the 2005-2007 National Inpatient Sample (NIS) Database, we identified patients ≥ 30 years of age who underwent MV repair or replacement, excluding ischemic and congenital MV disease. Patients were stratified into 4 racial groups: whites, African-Americans, Hispanics, and others. The 4 groups were compared with respect to baseline characteristics, type of MV procedure (repair versus replacement), and short-term outcomes. RESULTS: Non-whites comprised 22.3% (7818 out of 35,074) of the patients and were generally younger, more often on Medicaid and from urban locations, and more often presented on an urgent/emergent basis. African-Americans and Hispanics tended to be less affluent and have a higher Charlson comorbidity index. MV repair was performed in 45.8% of the patients overall. The racial groups differed significantly with respect to the proportion of patients receiving repair. Hispanics were 2 times more likely to have MV replacement compared to whites (odds ratio [OR] = 2.06, 95% confidence interval [CI] = 1.52-2.80, P = .0001), and African-Americans were more than 1.5 times more likely to have replacement compared to whites (OR = 1.69, 95% CI = 1.35-2.11). Following adjustment for baseline characteristics, there was no difference with respect to race for in-hospital mortality or likelihood of repair, but differences between groups persisted for length of stay and discharge location. African-Americans and Hispanics were more likely than whites to have a prolonged hospitalization. CONCLUSIONS: African-Americans and Hispanics present for MV surgery with worse preoperative profiles and undergo mitral repair less often compared to whites. Although in-hospital mortality was not influenced by race, African-Americans and Hispanics had a more protracted hospital course even following adjustment. The disparity in mitral procedure selection among racial groups was present only prior to adjustment for important baseline characteristics. Nevertheless, this racial difference reflects current reality in surgical practice and identifies an important area for future improvement in the care of patients with valvular heart disease.

Is chronic obstructive pulmonary disease an independent risk factor for transfusion in coronary artery bypass graft surgery?

OBJECTIVE: The literature is inconsistent regarding the role of chronic obstructive pulmonary disease (COPD) as a risk factor for blood product transfusion during coronary artery bypass graft (CABG). One reason may be lack of objective criteria to define COPD in previously published reports. We examined the role of COPD as a risk factor for transfusion using a strict definition based on objective pulmonary function test (PFT) data. METHODS: We identified 180 patients, who underwent primary isolated non-emergent CABG and had PFTs performed preoperatively. COPD was defined as forced expiratory volume in 1s/forced vital capacity (FEV1/FVC) <70% and further stratified into mild/moderate/severe/very severe based on the Global Initiative for Chronic Obstructive Lung Disease (GOLD) guidelines. Patients with and without COPD were compared with respect to preoperative and postoperative characteristics and transfusion requirements. RESULTS: The overall transfusion rate was 59.4% (107/180). COPD patients (31.1%, 56/180) were older (66.6 ± 11.4 vs 62.3 ± 10.3 years, p = 0.01), had lower body mass index (BMI) (28.5 ± 5.8 vs 31.7 ± 6.0 kg/m(2), p=0.001), and were more often smokers (51.8% vs 36.3%, p = 0.05). COPD patients had shorter cardiopulmonary bypass (CPB) times (99.4 ± 27.9 vs 110.9 ± 32.4 min, p = 0.02), but left internal mammary artery (LIMA) use, number of bypass grafts, mortality, and postoperative complications were similar (p > 0.05). Transfusion rates were similar for patients with and without COPD. Further stratification into mild/moderate/severe/very severe COPD failed to identify COPD as a predictor of blood transfusion. CONCLUSIONS: Using objective PFT data, our study clarifies the disagreement in the literature with respect to the role of COPD as a risk factor for transfusion in CABG. Decreased pulmonary function does not appear to increase risk of transfusion during CABG, even for patients with severe COPD.