Life Expectancy of Patients With Severe Aortic Stenosis in Relation to Age and Surgical Risk Score.

BACKGROUND: There is a paucity of data regarding shorter life expectancy after aortic valve replacement (AVR) in patients with severe aortic stenosis (AS). METHODS: Among 3815 patients with severe AS enrolled in the CURRENT AS (Contemporary outcomes after sURgery and medical tREatmeNT in patients with severe Aortic Stenosis) registry, there were 1469 patients (initial AVR: n = 647; conservative strategy: n = 822) with low surgical risk, 1642 patients (initial AVR: n = 433; conservative strategy: n = 1209) with intermediate surgical risk, and 704 patients (initial AVR: n = 117; conservative strategy: n = 587) with high surgical risk. Among 1163 patients who actually underwent surgical AVR as the initial strategy, patients were divided into 4 groups according to age <65 years (n = 185), 65 to 74 (n = 394), 75 to 80 (n = 345), and >80 (n = 239). The expected survival of the general Japanese population was obtained from the Statistics Bureau of Japan. The surgical risk was estimated using The Society of Thoracic Surgery (STS) score. RESULTS: The median follow-up was 3.7 years. The cumulative incidences of all-cause death were significantly lower in the initial AVR strategy than in the initial conservative strategy across the 3 STS groups. Shorter life expectancy after surgical AVR was seen especially in younger patients. The observed mortality in low-risk patients was comparable to the expected mortality across all the age-groups, while intermediate-risk patients aged <75 years, and high-risk patients across all age-groups had higher mortality compared with the expected mortality. CONCLUSIONS: The risk stratification according to age and STS score might be useful to estimate shorter life expectancy after AVR, and these findings have implications for decision making in the choice of surgical or transcatheter AVR.

Forty-year survival after Glenn procedure without Fontan procedure in patients with single ventricle.

OBJECTIVES: There are no data on long-term outcomes beyond 30 years after the Glenn procedure without the subsequent Fontan procedure in patients with single-ventricle physiology. Hence, this study aimed to clarify the very long-term outcomes of these patients. METHODS: This single-centre, retrospective cohort study investigated the clinical outcomes of patients with single-ventricle physiology who underwent the Glenn procedure between 1970 and 1999. Those who underwent the subsequent Fontan procedure were excluded. The primary outcome was all-cause death. The secondary outcome was a composite of all-cause death, arrhythmic events, neurological events or infective endocarditis. The prognostic factors associated with the long-term outcomes were also evaluated. RESULTS: In total, 36 patients were enrolled (median age at Glenn procedure: 6.2 years, 56% male). During a median follow-up of 17.6 years (interquartile range: 6.1-33.4), 21 patients died and 29 experienced the composite outcome. The 20-, 30- and 40-year overall survival after the Glenn procedure was 51.2%, 44.4% and 40.3%, respectively. The 20-, 30- and 40-year event-free survival was 36.0%, 25.5% and 14.5%, respectively. Patients with dominant left ventricular morphology had better overall survival than those with dominant right ventricular morphology (hazard ratio: 0.24, 95% confidence interval: 0.08-0.76, P = 0.014). None of the patients had liver cirrhosis but 1 had protein-losing enteropathy. CONCLUSIONS: The 40-year overall survival after the Glenn procedure without the subsequent Fontan procedure in patients with single-ventricle physiology was 40.3%. Dominant left ventricular morphology may be associated with better long-term overall survival than dominant right ventricular morphology.

Comparison of Direct Oral Anticoagulants and Warfarin in Patients With Atrial Fibrillation and an Aortic Bioprosthetic Valve.

BACKGROUND: Current guidelines equally recommend direct oral anticoagulants (DOACs) and warfarin for atrial fibrillation (AF) patients with a bioprosthetic valve (BPV); however, there are limited data comparing DOACs and warfarin in AF patients with an aortic BPV.Methods and Results: This post-hoc subgroup analysis of a multicenter, prospective, observational registry (BPV-AF Registry) aimed to compare DOACs and warfarin in AF patients with an aortic BPV. The primary outcome was a composite of stroke, systemic embolism, major bleeding, heart failure requiring hospitalization, all-cause death, or BPV reoperation. The analysis included 479 patients (warfarin group, n=258; DOAC group, n=221). Surgical aortic valve replacement was performed in 74.4% and 36.7% of patients in the warfarin and DOAC groups, respectively. During a mean follow up of 15.5 months, the primary outcome occurred in 45 (17.4%) and 32 (14.5%) patients in the warfarin and DOAC groups, respectively. No significant difference was found in the primary outcome between the 2 groups (adjusted hazard ratio: 0.88, 95% confidence interval: 0.51-1.50). No significant multiplicative interaction was observed between the anticoagulant effects and type of aortic valve procedure (P=0.577). CONCLUSIONS: Among AF patients with an aortic BPV, no significant difference was observed in the composite outcome of adverse clinical events between patients treated with warfarin and those treated with DOACs, suggesting that DOACs can be used as alternatives to warfarin in these patients.

Concomitant Mitral Regurgitation in Severe Aortic Stenosis　- A Report From the CURRENT AS Registry.

BACKGROUND: The clinical significance of concomitant mitral regurgitation (MR) has not been well addressed in patients with severe aortic stenosis (AS).Methods and Results:We analyzed 3,815 patients from a retrospective multicenter registry of severe AS in Japan (CURRENT AS registry). We compared the clinical outcomes between patients with moderate/severe MR and with none/mild MR according to the initial treatment strategy (initial aortic valve replacement [AVR] or conservative strategy). The primary outcome measure was a composite of aortic valve-related death or heart failure hospitalization. At baseline, moderate/severe MR was present in 227/1,197 (19%) patients with initial AVR strategy and in 536/2,618 (20%) patients with a conservative strategy. The crude cumulative 5-year incidence of the primary outcome measure was significantly higher in patients with moderate/severe MR than in those with none/mild MR, regardless of the initial treatment strategy (25.2% vs. 14.4%, P<0.001 in the initial AVR strategy, and 63.3% vs. 40.7%, P<0.001 in the conservative strategy). After adjusting confounders, moderate/severe MR was not independently associated with higher risk for the primary outcome measure in the initial AVR strategy (hazard ratio [HR] 1.11, 95% confidence interval [CI] 0.67-1.83, P=0.69), and in the conservative strategy (HR 1.13, 95% CI 0.93-1.37, P=0.22). CONCLUSIONS: Concomitant moderate/severe MR was not independently associated with higher risk for the primary outcome measure regardless of the initial treatment strategy.

Open thoracoabdominal aortic aneurysm repair in a patient with myasthenia gravis.

Myasthenia gravis (MG) is an autoimmune neuromuscular junction disorder and rarely coexists with aortic aneurysms requiring open repair. A 66-year-old patient with MG underwent extended thoraco-abdominal aortic aneurysm (TAAA) repair 16 years after onset of type-B acute aortic dissection. At 62 years, the patient was diagnosed with MG (MGFA class IIIa) from positive anti-acetylcholine receptor antibody without thymoma. Preoperatively, MG was well-controlled by prednisolone, cyclosporin and pyridostigmine. Extent II TAAA repair was performed under general anaesthesia maintained by total intravenous anaesthesia. Transcranial motor-evoked potential and somatosensory-evoked potential were applied to monitor intraoperative spinal cord ischaemia and muscle weakness. Amplitudes of motor-evoked potential and somatosensory-evoked potential attenuated intraoperatively but normalized after reperfusion from the reconstructed tube graft. Perioperative steroid coverage was given against surgical stress. The patient was weaned from mechanical ventilatory support on postoperative day 7. No signs of spinal cord ischaemia or muscle weakness were seen.

Coronary Revascularization in the Past Two Decades in Japan (From the CREDO-Kyoto PCI/CABG Registries Cohort-1, -2, and -3).

The treatment of coronary artery disease has substantially changed over the past two decades. However, it is unknown whether and how much these changes have contributed to the improvement of long-term outcomes after coronary revascularization. We assessed trends in the demographics, practice patterns and long-term outcomes in 24,951 patients who underwent their first percutaneous coronary intervention (PCI) (n = 20,106), or isolated coronary artery bypass grafting (CABG) (n = 4,845) using the data in a series of the CREDO-Kyoto PCI/CABG Registries (Cohort-1 [2000 to 2002]: n = 7,435, Cohort-2 [2005 to 2007]: n = 8,435, and Cohort-3 [2011 to 2013]: n = 9,081). From Cohort-1 to Cohort-3, the patients got progressively older across subsequent cohorts (67.0 ± 10.0, 68.4 ± 9.9, and 69.8 ± 10.2 years, ptrend < 0.001). There was increased use of PCI over CABG (73.5%, 81.9%, and 85.2%, ptrend < 0.001) and increased prevalence of evidence-based medications use over time. The cumulative 3-year incidence of all-cause death was similar across the 3 cohorts (9.0%, 9.0%, and 9.3%, p = 0.74), while cardiovascular death decreased over time (5.7%, 5.1%, and 4.8%, p = 0.03). The adjusted risk for all-cause death and for cardiovascular death progressively decreased from Cohort-1 to Cohort-2 (HR:0.89, 95%CI:0.80 to 0.99, p = 0.03, and HR:0.80, 95%CI:0.70 to 0.92, p = 0.002, respectively), and from Cohort-2 to Cohort-3 (HR:0.86, 95%CI:0.78 to 0.95, p = 0.004, and HR:0.77, 95%CI:0.67-0.89, p < 0.001, respectively). The risks for stroke and repeated coronary revascularization also improved over time. In conclusions, we found a progressive and substantial reduction of adjusted risk for all-cause death, cardiovascular death, stroke, and repeated coronary revascularization over the past two decades in Japan.

Effect of Heart Failure on Long-Term Clinical Outcomes After Percutaneous Coronary Intervention Versus Coronary Artery Bypass Grafting in Patients With Severe Coronary Artery Disease.

Background Heart failure might be an important determinant in choosing coronary revascularization modalities. There was no previous study evaluating the effect of heart failure on long-term clinical outcomes after percutaneous coronary intervention (PCI) relative to coronary artery bypass grafting (CABG). Methods and Results Among 14 867 consecutive patients undergoing first coronary revascularization with PCI or isolated CABG between January 2011 and December 2013 in the CREDO-Kyoto PCI/CABG registry Cohort-3, we identified the current study population of 3380 patients with three-vessel or left main coronary artery disease, and compared clinical outcomes between PCI and CABG stratified by the subgroup based on the status of heart failure. There were 827 patients with heart failure (PCI: N=511, and CABG: N=316), and 2553 patients without heart failure (PCI: N=1619, and CABG: N=934). In patients with heart failure, the PCI group compared with the CABG group more often had advanced age, severe frailty, acute and severe heart failure, and elevated inflammatory markers. During a median 5.9 years of follow-up, there was a significant interaction between heart failure and the mortality risk of PCI relative to CABG (interaction P=0.009), with excess mortality risk of PCI relative to CABG in patients with heart failure (HR, 1.75; 95% CI, 1.28-2.42; P<0.001) and no excess mortality risk in patients without heart failure (HR, 1.04; 95% CI, 0.80-1.34; P=0.77). Conclusions There was a significant interaction between heart failure and the mortality risk of PCI relative to CABG with excess risk in patients with heart failure and neutral risk in patients without heart failure.

Percutaneous Coronary Intervention Versus Coronary Artery Bypass Grafting in Patients With Versus Without Chronic Kidney Disease.

Chronic kidney disease (CKD) might be an important determinant in choosing percutaneous coronary intervention (PCI) and coronary artery bypass grafting (CABG). However, there is a scarcity of studies evaluating the effect of CKD on long-term outcomes after PCI relative to CABG in the population including severe CKD. Among 30257 consecutive patients patients who underwent first coronary revascularization with PCI or isolated CABG in the CREDO-Kyoto PCI/CABG registry Cohort-2 (n = 15330) and Cohort-3 (n = 14,927), we identified the current study population of 12,878 patients with multivessel or left main disease, and compared long-term clinical outcomes between PCI and CABG stratified by the subgroups based on the stages of CKD (no CKD: eGFR >=60 ml/min/1.73m2, moderate CKD: 60> eGFR >=30 ml/min/1.73m2, and severe CKD: eGFR <30 ml/min/1.73m2 or dialysis). There were 6,999 patients without CKD (PCI: n = 5,268, and CABG: n = 1,731), 4,427 patients with moderate CKD (PCI: n = 3,226, and CABG: n = 1,201), and 1,452 patients with severe CKD (PCI: n = 989, and CABG: n = 463). During median 5.6 years of follow-up, the excess mortality risk of PCI relative to CABG was significant regardless of the stages of CKD without interaction (no CKD: HR, 1.36; 95%CI, 1.12 to 1.65; p = 0.002, moderate CKD: HR, 1.40; 95%CI, 1.17 to 1.67; p <0.001, and severe CKD: HR, 1.33; 95%CI, 1.09 to 1.62; p = 0.004, Interaction p = 0.83). There were no significant interactions between CKD and the effect of PCI relative to CABG for all the outcome measures evaluated. In conclusion, PCI compared with CABG was associated with significantly higher risk for all-cause death regardless of the stages of CKD without any significant interaction.

Percutaneous Coronary Intervention Versus Coronary Artery Bypass Graftinge Among Patients with Unprotected Left Main Coronary Artery Disease in the New-Generation Drug-Eluting Stents Era (From the CREDO-Kyoto PCI/CABG Registry Cohort-3).

Long-term safety of percutaneous coronary intervention (PCI) as compared with coronary artery bypass grafting (CABG) is still controversial in patients with unprotected left main coronary artery disease (ULMCAD), and there is a scarcity of real-world data on the comparative long-term clinical outcomes between PCI and CABG for ULMCAD in new-generation drug-eluting stents era. The CREDO-Kyoto PCI/CABG registry Cohort-3 enrolled 14927 consecutive patients undergoing first coronary revascularization with PCI or isolated CABG between January 2011 and December 2013, and we identified 855 patients with ULMCAD (PCI: N = 383 [45%], and CABG: N = 472 [55%]). The primary outcome measure was all-cause death. Median follow-up duration was 5.5 (interquartile range: 3.9 to 6.6) years. The cumulative 5-year incidence of all-cause death was not significantly different between the PCI and CABG groups (21.9% vs 17.6%, Log-rank p = 0.13). After adjusting confounders, the excess risk of PCI relative to CABG remained insignificant for all-cause death (HR, 1.00; 95% CI, 0.68 to 1.47; p = 0.99). There were significant excess risks of PCI relative to CABG for myocardial infarction and any coronary revascularization (HR, 2.07; 95% CI, 1.30 to 3.37; p = 0.002, and HR, 2.96; 95% CI, 1.96 to 4.46; p < 0.001), whereas there was no significant excess risk of PCI relative to CABG for stroke (HR, 0.85; 95% CI, 0.50 to 1.41; p = 0.52). In conclusion, there was no excess long-term mortality risk of PCI relative to CABG, while the excess risks of PCI relative to CABG were significant for myocardial infarction and any coronary revascularization in the present study population reflecting real-world clinical practice in Japan.

Long-term results of the maze procedure with GP ablation for permanent atrial fibrillation.

OBJECTIVES: We investigated the effect of the maze procedure with intensive pulmonary vein isolation (PVI) guided by ganglionated plexus (GP) mapping (the Maze with GP ablation group) on a long-term postoperative maintenance of sinus rhythm in patients with permanent atrial fibrillation (AF) and compared with that in patients undergoing the maze procedure with the conventional PVI (the Maze group). METHODS AND RESULTS: We investigated 48 patients who underwent the maze procedure with GP ablation for persistent AF and 43 patients who underwent the maze procedure. The Maze procedure was conducted by the endocardial application of bipolar radiofrequency ablation and cryoablation. Conventional PVI was applied three times for the entrance of right and left PVs, respectively. Intensive PVI for GP ablation was repeated six-to-eight times for both sides of PVs to cover the bilateral GP regions identified by GP mapping. The duration of permanent AF, the prevalence of concomitant primary heart diseases, and the postoperative follow-up period were comparable between the two groups. At discharge, 1 year, 5 years after the surgery, sinus rhythm was maintained in 74.4%, 61%, and 40.5% of the Maze group. In contrast, it was maintained in 93.7%, 88.9%, and 75.7% of the Maze with GP ablation group. The cumulative freedom rate from AF at 10 years after surgery was significantly higher in the Maze with GP ablation group. CONCLUSIONS: More intense PV isolation including adjacent GP may improve long-term results of maze procedure in patients with permanent AF.

Successful Transcatheter Aortic Valve Implantation in a Patient with Radiation-induced Aortic Stenosis for Mediastinal Hodgkin Lymphoma.

Aortic stenosis (AS), a late complication of thoracic radiation therapy for chest lesions, is often coincident with porcelain aorta or hostile thorax. We herein report a 59-year-old man with a history of mediastinal Hodgkin lymphoma treated with radiation therapy but later presenting with heart failure caused by severe AS. Severe calcification in the mediastinum and around the ascending aorta made it difficult to perform surgical aortic valve replacement. The patient therefore underwent transcatheter aortic valve implantation (TAVI). It is important to recognize radiation-induced AS early, now that TAVI is a well-established treatment required by increasing numbers of successfully treated cancer patients.

Relationship between right and left ventricular diastolic dysfunction assessed by 2-dimensional speckle-tracking echocardiography in adults with repaired tetralogy of Fallot.

Several studies have reported a correlation between right ventricular (RV) and left ventricular (LV) systolic dysfunction in adults with repaired tetralogy of Fallot (TOF). However, data are lacking regarding the relationship between RV and LV diastolic dysfunction assessed by 2-dimensional speckle-tracking echocardiography. We studied 69 adults with repaired TOF (mean age 34 years, 61% male) who had been regularly followed up and had routinely undergone echocardiography. In addition to conventional echocardiography, global longitudinal strain (GLS) and early diastolic strain rate (SRe) of both ventricles were assessed using 2-dimensional speckle-tracking echocardiography. Results were compared with 30 age- and sex-matched controls. RV and LV GLS were decreased in TOF patients compared with controls (- 18.4 ± 3.3% vs. -23.5 ± 4.2%, p < 0.001 and - 16.0 ± 3.8% vs. -20.0 ± 3.0%, p < 0.001, respectively). RV and LV SRe were also decreased in TOF patients compared with controls (1.22 ± 0.34 sec- 1 vs. 1.47 ± 0.41 sec- 1, p = 0.003 and 1.29 ± 0.42 sec- 1 vs. 1.63 ± 0.42 sec- 1, p < 0.001, respectively). A correlation between RV and LV SRe was found in TOF patients (r = 0.43, p < 0.001) as well as between RV and LV GLS (r = 0.45, p < 0.001). Two-dimensional speckle-tracking echocardiography reveals subclinical RV and LV diastolic dysfunction in adults with repaired TOF. A correlation is observed between RV and LV diastolic dysfunction as well as between RV and LV systolic dysfunction.

[Spleen Infarction after Direct Aortic Access for Transcatheter Aortic Valve Replacement;Report of a Case].

Transcatheter aortic valve replacement(TAVR) in the treatment of patients with severe aortic valve stenosis (AS) has evolved on the basis of evidence from clinical trials. A 84-year-old woman with a complaint of dyspnea was diagnosed with severe AS. A preoperative computed tomography (CT) revealed huge mural thrombus at descending aorta, therefore we planned direct aortic access for TAVR to avoid embolism. Transesophageal echocardiography revealed fluttering echogram at left ventricular outflow tract. After TAVR the fluttering echogram disappeared. A postoperative CT revealed spleen infarction. In such cases, we should keep in mind that surgical AVR can be a treatment option.

Impact of concomitant tricuspid regurgitation on long-term outcomes in severe aortic stenosis.

AIMS: Tricuspid regurgitation (TR) has been reported to be associated with worse survival in various heart diseases, but there are few data in aortic stenosis (AS). METHODS AND RESULTS: In the Contemporary Outcomes after Surgery and Medical Treatment in Patients with Severe Aortic Stenosis (CURRENT AS) Registry enrolling 3815 consecutive patients with severe AS, there were 628 patients with moderate or severe TR (TR group) and 3187 patients with no or mild TR (no TR group). The study patients were subdivided into the initial aortic valve replacement (AVR) stratum (n = 1197) and the conservative stratum (n = 2618) according to treatment strategy. The primary outcome measure was a composite of aortic valve-related death or hospitalization due to heart failure. The 5-year freedom rate from the primary outcome measure was significantly lower in the TR group than in the no TR group (49.1% vs. 67.3%, P < 0.001). Even after adjusting for confounders, the excess risk of TR relative to no TR for the primary outcome measure remained significant [hazard ratio (HR): 1.25, 95% confidence interval (CI): 1.06-1.48; P = 0.008]. The trend for the excess adjusted risk in the TR group was consistent in the initial AVR and the conservative strata (HR 1.55, 95% CI: 0.97-2.48; P = 0.07; HR 1.22, 95% CI: 1.02-1.46; P = 0.03, respectively). In the initial AVR stratum, the 5-year freedom rate from the primary outcome measure was not different between the two groups with (n = 56) or without (n = 91) concomitant tricuspid annuloplasty (61.5% vs. 72.1%, P = 0.48). CONCLUSION: The presence of clinically significant TR concomitant with severe AS is associated with a poor long-term outcome, regardless of the initial treatment strategy.

Early Surgery vs. Surgery After Watchful Waiting for Asymptomatic Severe Aortic Stenosis.

BACKGROUND: There is no large-scale study comparing postoperative mortality after aortic valve replacement (AVR) for asymptomatic severe aortic stenosis (AS) between initial treatment with AVR vs. eventual AVR after conservative management. Methods and Results: We analyzed data from a multicenter registry enrolling 3,815 consecutive patients with severe AS. Of 1,808 asymptomatic patients, 286 patients initially underwent AVR (initial AVR group), and 377 patients were initially managed conservatively and eventually underwent AVR (AVR after watchful waiting group). Mortality after AVR was compared between the 2 groups. Subgroup analysis according to peak aortic jet velocity (Vmax) at diagnosis was also conducted. There was no significant difference between the 2 groups in 5-year overall survival (OS; 86.0% vs. 84.1%, P=0.34) or cardiovascular death-free survival (DFS; 91.3% vs. 91.1%, P=0.61), but on subgroup analysis of patients with Vmax ≥4.5 m/s at diagnosis, the initial AVR group was superior to the AVR after watchful waiting group in both 5-year OS (88.4% vs. 70.6%, P=0.003) and cardiovascular DFS (91.9% vs. 81.7%, P=0.023). CONCLUSIONS: Asymptomatic severe AS patients who underwent AVR after watchful waiting had a postoperative survival rate similar to those who initially underwent AVR. In a subgroup of patients with Vmax ≥4.5 m/s at diagnosis, however, the AVR after watchful waiting group had worse postoperative survival rate than the initial AVR group.

Five-Year Clinical Outcome of Asymptomatic vs. Symptomatic Severe Aortic Stenosis After Aortic Valve Replacement.

BACKGROUND: There is discordance regarding the effect of symptom status before aortic valve replacement (AVR) on long-term outcome after AVR in severe aortic stenosis (AS).Methods and Results:The CURRENT AS registry is a multicenter retrospective registry enrolling 3,815 consecutive patients with severe AS. Among 1,196 patients managed with the initial AVR strategy, long-term clinical outcomes were compared between the symptomatic patients (n=905), and asymptomatic patients (n=291). Median follow-up interval was 1337 days with a 91% follow-up rate at 2 years. AVR was performed in 886 patients (98%) in the symptomatic group and in 287 patients (99%) in the asymptomatic group. Symptomatic patients were older and more often had comorbidities than asymptomatic patients with similar echocardiographic AS severity. The cumulative 5-year incidences of all-cause death and heart failure (HF) hospitalization were significantly higher in symptomatic patients than in asymptomatic patients (25.6% vs. 15.4%, P=0.001, and 14.2% vs. 3.8%, P<0.001, respectively). On landmark analysis at 30 days after AVR, the differences in mortality and HF hospitalization between the 2 groups were mainly observed beyond 30 days. CONCLUSIONS: When managed with the initial AVR strategy, the long-term outcomes of symptomatic severe AS were worse than those of asymptomatic severe AS. Early AVR strategy might be recommended in some selected asymptomatic severe AS patients with reasonable operative risk.

Usefulness of intraoperative continuous infusion of tranexamic acid during emergency surgery for type A acute aortic dissection.

PURPOSE: We investigated the influence of intraoperative continuous tranexamic acid (TA) infusion on the amount of blood transfusion required in emergency surgery for type A acute aortic dissection. METHODS: The study was based on the data of 55 consecutive patients who underwent surgery for type A acute aortic dissection. The patients were divided into 2 groups for comparison: Group T, consisting of 26 patients who received intraoperative continuous infusion of TA, and Group N, consisting of 29 patients who did not receive TA infusion during the surgery. RESULTS: The mean amounts of blood transfusion required during and after surgery were compared between the 2 groups: they were 10.5 ± 8.7 and 16.2 ± 10.0 units of mannitol-adenine-phosphate-added red cell concentrate, 9.3 ± 8.6 and 17.1 ± 10.0 units of fresh frozen plasma, and 20.4 ± 12.2 and 29.7 ± 14.9 units of platelet concentrate, respectively, in Groups T and N. Thus, the amount of each of these blood products required was significantly reduced in Group T. CONCLUSIONS: During emergency surgery for type A acute aortic dissection, continuous infusion of TA resulted in a significant reduction in the amount of blood transfusion required.

Hybrid procedure for a Kommerell's diverticulum in a right-sided aortic arch.

A rare case of an aneurysmal Kommerell's diverticulum in a right-sided aortic arch was successfully treated using a hybrid procedure comprising total arch replacement and percutaneous stent grafting. A 65-year-old man with dysphagia was diagnosed with an ectatic right-sided aortic arch and a saccular aneurysm of the Kommerell's diverticulum. Since its radical resection during a single surgery was unfeasible because of its complex configuration, a 2-stage procedure was adopted.

Comparison between early and late prosthetic valve endocarditis: clinical characteristics and outcomes.

BACKGROUND AND AIM OF THE STUDY: Prosthetic valve endocarditis (PVE) is considered a time-related event. The study aim was to compare the clinical characteristics and outcomes of early- and late-onset PVE, and to investigate potential preventive measures for each condition. METHODS: A total of 47 consecutive patients undergoing surgery for PVE between January 1986 and December 2011 were analyzed retrospectively, and classified as an early-onset group (n = 26; PVE occurring within 12 months after previous surgery) and late-onset group (n = 21; PVE occurring after 12 months). RESULTS: The prosthetic valve position significantly affected the incidence of endocarditis: 21 cases (80.7%) in the early-onset group had infected aortic prostheses, while 18 (85.7%) in the late-onset group had infected mitral prostheses (p = 0.028). PVE significantly affected bioprosthetic valves in the early-onset group (18 cases, 69.2%) and mechanical valves in the late-onset group (17 cases, 80.9%) (p < 0.01). Staphylococcus spp. infections were predominant in the early-onset group (21 cases, 80.7%), and Streptococcus spp. in the late-onset group (five cases, 23.8%) (p = 0.03). Operative deaths occurred in both the early-onset (n = 6; 23.0%) and late-onset (n = 2; 9.5%) groups (p = 0.11). The long-term mortality in the early-onset and late-onset groups, respectively, was 40.3 +/- 17.7% and 85.1 +/- 7.9% at 10 years, and 40.3 +/- 17.7% and 72.9 +/- 13.1% at 15 years (p 0.047). Freedom from recurrent endocarditis after two years in the early- and late-onset groups, respectively, was 67.8 +/- 10.1% and 88.8 +/- 7.4% (p = 0.048). CONCLUSION: Clinical characteristics and outcomes differed significantly between early- and late-onset PVE. The clinical outcomes of patients with early PVE tend to be serious, and therefore stringent care should be taken to avoid contamination during the initial surgery and hence to reduce the incidence of the condition.