Transcatheter heart valve selection in patients with low ejection fraction and aortic stenosis.

OBJECTIVE: The aim of this study was to compare outcomes of transcatheter heart valve (THV) choice in patients with left ventricular (LV) systolic dysfunction. BACKGROUND: The management congestive heart failure with combined LV systolic dysfunction and severe aortic stenosis (AS) is challenging, yet transcatheter aortic valve replacement (TAVR) has emerged as a suitable treatment option in such patients. Head-to-head comparisons among the balloon-expandable (BEV) and self-expandable (SEV) THV remain limited in this subgroup of patients. METHODS: In this retrospective study, we included patients with severe AS with LV systolic dysfunction (LVEF ≤40%) who underwent TAVR at four high volume centers. Two thousand and twenty-eight consecutive patients were analyzed, of which 335 patients met inclusion criteria. One hundred fourty-six patients (43%) received a SEV, and 189 patients (57%) received a BEV. RESULTS: Baseline characteristics were similar except for a higher proportion of females in the SEV group. The primary composite endpoint of in-hospital mortality, moderate or greater paravalvular (PVL), stroke, conversion to open surgery, aortic valve reintervention, and/or need for permanent pacemaker (PPM) was no different among THV choice. There was more PVL in the SEV group, but higher transaortic gradients in the BEV group. Clinical outcomes and quality of life measures were similar up to 1 year follow-up. CONCLUSION: The choice of THV in patients with severe AS and systolic dysfunction must be weighed on a case-by-case basis.

Deep Versus Moderate Hypothermia in Acute Type A Aortic Dissection: A Propensity-Matched Analysis.

BACKGROUND: The ideal temperature for hypothermic circulatory arrest (HCA) during acute type A aortic dissection (ATAAD) repair has yet to be determined. We examined the clinical impact of different degrees of hypothermia during dissection repair. METHODS: Out of 240 cases of ATAAD between June 2014 and December 2019, 228 patients were divided into two groups according to lowest intraoperative temperature: moderate hypothermic circulatory arrest (MHCA) (20-28°C) versus deep hypothermic circulatory arrest (DHCA) (<20°C). From this, 74 pairs of propensity-matched patients were analysed with respect to operative data and short-term clinical outcomes. Independent predictors of a composite outcome of 30-day mortality and stroke were identified. RESULTS: Mean lowest temperature was 25.5±3.9°C in the MHCA group versus 16.0±2.9°C in DHCA. Overall 30-day mortality of matched cohort was 11.5% (17 deaths), there were no significant different between matched groups. Cardiopulmonary bypass (CPB) times were longer in DHCA (221.0±69.9 vs 190.7±74.5 mins, p=0.01). Antegrade cerebral perfusion (ACP) during HCA predicted a lower composite risk of 30-day mortality and stroke (OR 0.38). Female sex (OR 4.71), lower extremity ischaemia at presentation (OR 3.07), and CPB >235 minutes (OR 2.47), all portended worse postoperative outcomes. CONCLUSIONS: A surgical strategy of MHCA is at least as safe as DHCA during repair of acute type A aortic dissection. ACP during HCA is associated with reduced 30-day mortality and stroke, whereas female sex, lower extremity ischaemia, and longer CPB times are all predictive of poorer short-term outcomes.

Marijuana: An Underappreciated Risk Factor for Acute Type A Aortic Dissection?

BACKGROUND: Stimulants such as cocaine and amphetamines are well-established risk factors for acute aortic dissection. Despite the fact that marijuana is the most commonly used illicit drug in the United States, its relationship to acute aortic syndromes has not been well studied. METHODS: A comprehensive retrospective review was undertaken of all consecutive patients who presented with acute Stanford type A aortic dissection from January 2017 to December 2019. Of 152 patients identified, 51 (33.6%) underwent comprehensive urine toxicology screening at clinical presentation. The characteristics and outcomes of the patients with urine results positive for tetrahydrocannabinol (THC) (n = 9, 17.6%) were compared with the 42 patients who had no evidence of recent marijuana consumption. RESULTS: Of the 51 dissection patients who underwent broad-spectrum urine toxicology screening upon presentation, 9 (17.6%) returned positive results for THC, a proportion higher than would be expected for the general population. All THC patients were male; 3 concurrently tested positive for cocaine, and 3 others had evidence of recent amphetamine use. The THC patients were significantly younger than the non-THC patients (mean ± standard deviation age 48 ± 11.3 versus 61.4 ± 12.3 years, respectively, P = .004). A greater proportion of the THC cohort had a known diagnosis of aortic aneurysm before the dissection (44.4% versus 4.8%, P = .006). All patients underwent expeditious surgical repair. Thirty-day mortality for the entire cohort of 51 patients was 19.6% (10 deaths); for the THC group, it was 11.1% (1 death). There was no difference in the incidence of major postoperative complications between the 2 groups. CONCLUSION: Marijuana is the third most commonly used substance in the United States, after alcohol and tobacco. Although marijuana use is understudied, our results suggest that marijuana may be a contributing risk factor for acute type A aortic dissection, particularly in patients with other predisposing risk factors. Given the recent national trend to legalize marijuana, with the concomitant potential for exponential increases in its consumption, we suggest that the diagnosis of aortic dissection be considered earlier in any younger patient who presents with suggestive symptoms, especially if there is a history of recent marijuana use.

Long-term survival in triple-vessel disease: Hybrid coronary revascularization compared to contemporary revascularization methods.

BACKGROUND: Hybrid coronary revascularization (HCR) constitutes a left internal mammary artery graft to the left anterior descending (LAD) coronary artery, coupled with percutaneous coronary intervention (PCI) for non-LAD lesions. This management strategy is not commonly offered to patients with complex multivessel disease. Our objective was to evaluate 8-year survival in patients with triple-vessel disease (TVD) treated by HCR, compared with that of concurrent matched patients managed by traditional coronary artery bypass grafting (CABG) or multivessel PCI. METHODS: A retrospective review was undertaken of 4805 patients with TVD who presented between January 2009 and December 2016. A cohort of 100 patients who underwent HCR were propensity-matched with patients treated by CABG or multivessel PCI. The primary endpoint was all-cause mortality at 8 years. RESULTS: Patients with TVD who underwent HCR had similar 8-year mortality (5.0%) as did those with CABG (4.0%) or multivessel PCI (9.0%). A composite endpoint of death, repeat revascularization, and new myocardial infarction, was not significantly different between patient groups (HCR 21.0% vs CABG 15.0%, P = .36; HCR 21.0% vs PCI 25.0%, P = .60). Despite a higher baseline synergy between percutaneous coronary intervention with taxus and cardiac surgery(SYNTAX) score, HCR was able to achieve a lower residual SYNTAX score than multivessel PCI (P = .001). CONCLUSIONS: In select patients with TVD, long-term survival and FREEDOM from major adverse cardiovascular events after HCR are similar to that seen after traditional CABG or multivessel PCI. HCR should be considered for patients with multivessel disease, presuming a low residual SYNTAX score can be achieved.

Aquapheresis: An Institutional Experience.

BACKGROUND: Aquapheresis (AQ) consists of the extracorporeal extraction of plasma water from the vascular space across a semipermeable membrane in response to a transmembrane pressure gradient. The primary utilization of AQ has been in the management of patients with diuretic resistant heart failure with a treatment goal directed to quickly eliminate the excess fluid and optimize volume status. This modality is similar to isolated ultrafiltration performed on those patients requiring dialysis, but utilizes a machine that is smaller and easier to initiate and operate compared with traditional dialysis equipment. METHOD: A retrospective study that describes the indications in which AQ was utilized at Lenox Hill Hospital. The patient list was generated by searching for the keyword "Aquaph" in our electronic health record (EHR) orders. Patients were categorized based on hospital location and indication of AQ therapy. Additional information includes duration of treatment (days), changes in creatinine (start of AQ to stop of AQ), and total volume removed. RESULTS: The search generated 28 patients; five were excluded as AQ was not initiated. In the remaining 23 patients, the mean aquapheretic volume per day was 1954 mls, with no significant change in creatinine. Indications for AQ broke out into five main categories: cardiogenic shock including post cardiothoracic procedure (10 pts); anasarca (5 pts); ATN with volume overload (4 pts); ESKD with bridge ultrafiltration between hemodialysis treatments (2 pts); and post-op volume overload (2 pts). CONCLUSION: We found that aquapheresis can be utilized in situations other than diuretic resistant heart failure. Also to consider, is the ease in which this less complicated aquapheresis equipment can be operated compared to the more complex hemodialysis equipment.

Reoperative mitral valve surgery via sternotomy or right thoracotomy: A propensity-matched analysis.

BACKGROUND: There is, as yet, no broad consensus regarding the optimal surgical approach for patients requiring reoperative mitral valve surgery. Consequently, we sought to evaluate the perioperative outcomes for patients undergoing redo mitral surgery via right mini thoracotomy as compared with traditional resternotomy. METHODS: A comprehensive retrospective review of our prospectively collected database was undertaken from January 2011 to December 2017. We propensity matched 90 patients who underwent reoperative mitral valve surgery via right mini thoracotomy with a concurrent cohort of patients who had redo median sternotomy. Intraoperative data and short-term clinical outcomes were analyzed. RESULTS: The 30-day mortality was 3.3% (six deaths) in the entire cohort, not significantly different between redo sternotomy and mini thoracotomy groups. Patients who had their procedure via right mini thoracotomy had reduced intensive care unit (P = .029) and overall hospital (P < .0001) lengths of stay, a diminished requirement for perioperative transfusion (P = .023), and a trend towards faster postoperative extubation. Right thoracotomy patients experienced shorter cardiopulmonary bypass (P = .012) and cardiac arrest (P < .0001) times than did the sternotomy cases. Peripheral cannulation was utilized more frequently in the mini thoracotomy group, as were fibrillatory arrest techniques. CONCLUSION: Reoperative mitral valve surgery via right mini thoracotomy is safe, and is associated with shorter extracorporeal circulation times, reduced transfusion, and faster postoperative recovery.

Acute Bioprosthetic Mitral Valve Thrombosis: An Unfortunate Collision of Prothrombotic Risk Factors.

Subclinical and clinical thrombosis of bioprosthetic cardiac valves is more common than has been previously recognized. We present a unique case of acute thrombosis of a bioprosthetic mitral valve in a 40-year-old female patient undergoing hormonal stimulation as part of in vitro fertilization therapy, who also had concomitant protein C deficiency that was undiagnosed at the time. To the best of our knowledge, this is the first reported case of acute bioprosthetic valve thrombosis in this complex thrombophilic milieu, and suggests the need for increased screening for prothrombotic risk factors in female patients with bioprosthetic valves before they commence gonadotropin stimulation therapy.

Aortic Cannulation in DeBakey Type I Aortic Dissection Facilitates Subsequent Deployment of a Frozen Elephant Trunk.

Arterial cannulation in acute DeBakey type I dissection can be difficult. Moreover, the residual dissected aorta is susceptible to further adverse events in the future. Implanting a stent-graft into the descending aorta during the initial dissection repair ('frozen elephant trunk') has been demonstrated to promote favourable aortic remodelling, mitigating some of these longer-term complications. We describe a technique for cannulation of the ascending aorta in acute dissection that facilitates expeditious antegrade deployment of a frozen elephant trunk.

Rethinking the Paradigm: Modern Approach to Proximal Aortic Reconstruction Demonstrates Excellent Outcomes.

BACKGROUND: Techniques for aortic surgery continue to evolve. A real-world snapshot of patients undergoing elective surgery for aneurysm in the modern era is helpful to assist in deciding the appropriate timing for intervention. We herein describe our experience with 100 consecutive patients who underwent primary elective surgery for aneurysm of the proximal thoracic aorta over a two-year period at a single institution. METHODS: The majority of our patients were male, mean age 61.19 ± 13.33 years. Two patients had Marfan syndrome. Twenty-eight patients had bicuspid aortic valve. Thirty-four patients underwent aortic root replacement utilizing a composite valve/graft conduit; 23 had valve-sparing root replacements. The ascending aorta was replaced in 89 patients; 80 (89.9%) of these included a period of circulatory arrest at moderate hypothermia utilizing unilateral selective antegrade cerebral perfusion. RESULTS: Thirty-day mortality was zero. Perioperative stroke occurred in 2 patients, both of whom completely recovered prior to discharge. No patients required re-exploration for bleeding. One patient developed a sternal wound infection. Fifteen patients required readmission to hospital within thirty days of discharge. CONCLUSION: Elective surgery for aneurysm of the proximal aorta is safe, reproducible, and is associated with outcomes that are superior to those seen in an acute aortic syndrome. It may be appropriate to offer surgery to younger patients with proximal aortic aneurysms at smaller diameters, even if their aortic dimensions do not yet meet traditional guidelines for surgical intervention.

Journey to top performance: a multipronged quality improvement approach to reducing cardiac surgery mortality.

BACKGROUND: In 2006, leadership at Long Island Jewish Medical Center (New Hyde Park, New York) noted significantly higher cardiac surgery mortality rates for isolated valve and valve/coronary artery bypass graft procedures compared to the New York State Department of Health's Cardiac Surgery Reporting System statewide average. METHODS: Long Island Jewish Medical Center, a 583-bed nonprofit, tertiary care teaching hospital, is one of the clinical and academic hubs of North Shore-LIJ Health System. Senior leadership launched an evaluation of the cardiac surgery program to determine why cardiac surgery mortality rates were higher than expected. As a result, the cardiac surgery program was redesigned, and interventions were implemented related to preoperative care, intraoperative monitoring, postoperative care, and the cardiac surgery quality management program. RESULTS: According to the most recent New York State Department of Health reporting period (2009-2011), Long Island Jewish Medical Center had the lowest risk-adjusted mortality rate in New York State for adult patients undergoing surgeries to repair or replace heart valves and for adult patients in need of valve/coronary artery bypass graft surgery. The medical center has sustained significantly lower mortality rates compared to the statewide average for the past three cardiac surgery reporting periods. CONCLUSIONS: Cardiac surgery mortality rates can be significantly reduced and sustained below comparative norms when the organization is committed to clinical excellence and quality and is involved in continuously assessing organizational performance. The evaluation launched at Long Island Jewish Medical Center led to the redesign of the cardiac surgery program and prompted widespread improvement efforts and cultural change across the entire organization.

Improvement in postoperative lung function in patients with moderate to severe airway obstruction after robotic-assisted thoracoscopic tracheobronchoplasty.

OBJECTIVE: The study objective was to examine pulmonary function and quality of life improvement after robotic-assisted thoracoscopic tracheobronchoplasty for patients with different degrees of obstructive airway disease. METHODS: We performed a retrospective review of a prospective database of patients who underwent robotic-assisted thoracoscopic tracheobronchoplasty between 2013 and 2020. RESULTS: A total of 118 patients underwent robotic-assisted thoracoscopic tracheobronchoplasty. Preoperative and postoperative pulmonary function tests were available for 108 patients. Postoperative pulmonary function tests at a median of 16 months demonstrated a significant increase in percent predicted forced expiratory volume in 1 second (preoperative median: 76.76% predicted, postoperative: 83% predicted, P = .002). Preoperative and postoperative St George Respiratory Questionnaires were available for 64 patients with a significant decrease in postoperative score at a median of 7 months (preoperative median: 61, postoperative: 41.60, P < .001). When stratified by preoperative degree of obstruction, robotic-assisted thoracoscopic tracheobronchoplasty improved forced expiratory volume in 1 second in moderate to very severe obstruction with a statistically significant improvement in moderate (preoperative median: 63.91% predicted, postoperative median: 73% predicted, P = .001) and severe (preoperative median: 44% predicted, postoperative median: 57% predicted, P = .007) obstruction. St George Respiratory Questionnaire scores improved for all patients. Improvement for mild (preoperative median: 61.27, postoperative median: 36.71, P < .001) and moderate (preoperative median: 57.15, postoperative median: 47.52, P = .03) obstruction was statistically significant. CONCLUSIONS: Robotic-assisted thoracoscopic tracheobronchoplasty improves obstruction and symptoms. With limited follow-up, subgroup analysis showed forced expiratory volume in 1 second improved in severe preoperative obstruction and quality of life improved in moderate obstruction. Future follow-up is required to determine robotic-assisted thoracoscopic tracheobronchoplasty effects on the most severe group, but we cannot conclude that increased degree of preoperative obstruction precludes surgery.

Kissing balloon inflation for transcatheter aortic valve replacement and abutting ostial coronary artery stent.

In patients with ostial coronary stents protruding into the aorta, there is concern for stent injury while undergoing transcatheter aortic valve replacement (TAVR) with balloon-expandable transcatheter heart valve (THV). An 82-year-old male with history of symptomatic aortic stenosis, heart failure, and coronary artery disease with multiple interventions to right coronary artery (RCA) and a history of stent fracture requiring stent-in-stent placement one year previously, was evaluated for TAVR. His ostial RCA stent was protruding into the aorta at the level of sinotubular junction, with ostial stent to aortic wall (SAW) distance of 25.2 mm. There was concern for balloon inflation during TAVR leading to stent injury. The RCA was cannulated with a 6 French JR4 guide and wired with 0.014' coronary wire. Appropriately sized noncompliant balloon was advanced into RCA. Under rapid pacing, the coronary balloon was inflated across the RCA ostium followed by simultaneous deployment of THV. Intravascular imaging of the ostial RCA stent revealed no stent fracture. SAW distance is important to determine the possibility of balloon-induced stent injury during valve deployment. In cases where an ostial stent may interact with balloon inflation, kissing-balloon inflation may be performed to prevent stent injury. Learning objective: In patients with ostial coronary stents protruding into the aorta, stent to aortic wall distance is important to determine the possibility of balloon-induced stent injury during balloon-expandable transcatheter heart valve deployment. Kissing-balloon inflation may be performed to prevent stent injury.

Patient Satisfaction Scores After Cardiac Surgery: Should They Be Risk-Adjusted?

The Hospital Consumer Assessment of Health Care Providers and Systems (HCAHPS) is a survey tool that quantifies patient satisfaction after hospitalization. We sought to interrogate our HCAHPS results in order to identify any association between preoperative health, type of operation, and postoperative outcomes, with patient satisfaction after cardiac surgery. Of 12,572 patients who underwent cardiac surgery between December 2012 and December 2019, 2587 patients (20.6%) completed the HCAHPS survey. Patient satisfaction was quantified using HCAHPS responses, focused on 'top-box' rating in nursing care, physician care, hospital environment, and overall hospital rating, as primary endpoints. Multivariable logistic regression was used to identify those variables associated with top-box scores. Elevated patient risk, as measured by the Society of Thoracic Surgeons (STS) risk score in 2112 patients, was predictive of lower rates of top-box responses in nursing care (OR 0.963, P = 0.003), physician care (OR 0.96, P = 0.002), and overall hospital rating (OR 0.97, P = 0.007). Major postoperative complications were associated with lower patient satisfaction for nursing care (OR 0.67, P = 0.038), physician care (OR 0.59, P = 0.012), and overall hospital rating (OR 0.64, P = 0.035); length of stay ≥ 6 days was associated with increased patient satisfaction for nursing care (OR 1.45, P < 0.001). Increased preoperative risk and postoperative complications are associated with lower rates of top-box patient satisfaction scores after cardiac surgery. When assessing patient satisfaction after cardiac surgery, we suggest that a preoperative risk profile be considered.

Who needs their descending thoracic aorta anyway? Extra-anatomic bypass for aorto-bronchial fistula after TEVAR.

BACKGROUND: Aortobronchial fistula after TEVAR remains a vexing clinical problem associated with high mortality. Although a combination of endovascular and open surgical strategies have been reported in managing this pathology, there is as yet no definitive treatment algorithm that can be used for all patients. We discuss our approach to an aortobronchial fistula associated with an overtly infected aortic endograft. CASE PRESENTATION: A 49-year-old female sustained a traumatic aortic transection 14 years prior, managed by an endovascular stent-graft. Due to persistent endoleak, she underwent open replacement of her descending thoracic aorta 4 years later. Ten years after her open aortic surgery, the patient presented with hemoptysis, and a pseudoaneurysm at her distal aortic suture line was identified on computed tomography, whereupon she underwent placement of an endograft. Eight weeks later, she presented with dyspnea, recurrent hemoptysis, malaise and fever, with clinical and radiographic evidence of an aortobronchial communication and an infected aortic stent-graft. The patient underwent management via a two-stage open surgical approach, constituting an extra-anatomic bypass from her ascending aorta to distal descending aorta and subsequent radical excision of her descending aorta with all associated infected prosthetic material and repair of the airway. CONCLUSION: Aortobronchial fistula after TEVAR represents a challenging complex clinical scenario. Extra-anatomic aortic bypass followed by radical debridement of all contaminated tissue may provide the best option for durable longer-term outcomes.

Short- and Mid-Term Outcomes of Complex and High-Risk Versus Standard Percutaneous Coronary Interventions in Patients Undergoing Transcatheter Aortic Valve Replacement.

BACKGROUND: The prevalence of coronary artery disease (CAD) in patients undergoing TAVR varies and is associated with increased morbidity and mortality. We evaluated the outcomes of complex and high-risk percutaneous coronary interventions (CHIP-PCIs) and TAVR compared with standard PCI and TAVR. Between January 2014 and March 2021, a total of 276 consecutive patients with severe aortic stenosis (AS) who underwent TAVR and PCI at 3 centers within Northwell Health were retrospectively reviewed. CHIP-PCI was defined as PCI with one of the following: left ventricular ejection fraction (LVEF) <30%; left main coronary artery (LMCA)/chronic total occlusion (CTO) intervention; atherectomy; or need for left ventricular (LV) support. One hundred twenty- seven patients (46%) had CHIP-PCI prior to TAVR and 149 patients (54%) had standard PCI. Thirteen percent of CHIP-PCI and 22% of standard PCI cases were done concomitantly with TAVR. CHIP-PCI criteria were met for low EF (19%), LMCA (25%), CTO (3%), LV support (20%), and atherectomy (50%). The types of valves used were similarly divided (49% balloon expandable vs 51% self expanding. Major adverse cardiac or cerebrovascular event (MACCE) rate for CHIP-PCI/TAVR was 4.9% at 30 days vs 1.3% for standard PCI/TAVR (P=.09), driven by in-hospital stroke. At 1 year, the rates of MACCE for CHIP-PCI/TAVR remained higher than for standard PCI/TAVR, but was not statistically significant (8.7% vs 4%; P=.06), driven by revascularization. We found no differences between major and/or minor vascular complications. New York Heart Association classification at 1 month was similar (I/II 93% vs 95%; P=.87). Our study suggests that CHIP-PCI can be safely performed in patients with complex CAD and concomitant severe AS.

Minimally invasive coronary bypass versus percutaneous coronary intervention for isolated complex stenosis of the left anterior descending coronary artery.

OBJECTIVE: Debate continues as to the optimal minimally invasive treatment modality for complex disease of the left anterior descending coronary artery, with advocates for both robotic-assisted minimally invasive direct coronary artery bypass and percutaneous coronary intervention with a drug-eluting stent. We analyzed the midterm outcomes of patients with isolated left anterior descending disease, revascularized by minimally invasive direct coronary artery bypass or drug-eluting stent percutaneous coronary intervention, focusing on those with complex lesion anatomy. METHODS: A retrospective review was undertaken of all patients who underwent coronary revascularization between January 2008 and December 2016. From this population, 158 propensity-matched pairs of patients were generated from 158 individuals who underwent minimally invasive direct coronary artery bypass for isolated complex left anterior descending disease and from 373 patients who underwent percutaneous coronary intervention using a second-generation drug-eluting stent. Midterm survival and incidence of repeat left anterior descending intervention were analyzed for both patient groups. RESULTS: Overall 9-year survival was not significantly different between patient groups both before and after propensity matching. Midterm mortality in the matched minimally invasive direct coronary artery bypass group was low, irrespective of patient risk profile. By contrast, advanced age (hazard ratio, 1.10; P = .012) and obesity (hazard ratio, 1.09; P = .044) predicted increased late death after drug-eluting stent percutaneous coronary intervention among matched patients. Patients who underwent minimally invasive direct coronary artery bypass were significantly less likely to require repeat left anterior descending revascularization than those who had percutaneous coronary intervention, both before and after propensity matching. Smaller stent diameter in drug-eluting stent percutaneous coronary intervention was associated with increased left anterior descending reintervention (hazard ratio, 3.53; P = .005). CONCLUSIONS: In patients with complex disease of the left anterior descending artery, both minimally invasive direct coronary artery bypass and percutaneous coronary intervention are associated with similar excellent intermediate-term survival, although reintervention requirements are lower after surgery.

Mitral Regurgitation in the High-Risk Patient: Integrating an Expanding Armamentarium of Transcatheter Devices Into the Treatment Algorithm.

Over the last decade, multiple transcatheter mitral valve repair and replacement strategies have emerged, yet there is only 1 US Food and Drug Administration approved device, the MitraClip (Abbott Vascular, Inc., Santa Clara, CA). Current guidelines support the use of the MitraClip in high or prohibitive surgical risk patients, but there are many patients that are not anatomically suited for the device. This review article discusses the approach to degenerative and functional mitral regurgitation in the high-prohibitive risk patient, how to choose transcatheter treatment options (both approved and investigational), and potential management for therapy failure.

Robotic-assisted tracheobronchoplasty: Quality of life and pulmonary function assessment on intermediate follow-up.

OBJECTIVE: The initial description of robotic tracheobronchoplasty for the treatment of tracheobronchomalacia demonstrated feasibility, safety, and short-term symptomatic and functional improvement. The purpose of the current study was to demonstrate intermediate outcomes in postoperative pulmonary function and quality of life after robotic tracheobronchoplasty. METHODS: We retrospectively reviewed prospectively collected clinical data from 42 patients who underwent robotic tracheobronchoplasty from May 2016 to December 2017. The Institutional Review Board or equivalent ethics committee of the Northwell Health approved the study protocol and publication of data. Patient written consent for the publication of the study data was waived by the Institutional Review Board. RESULTS: A total of 42 patients underwent robotic tracheobronchoplasty during the study period. Median total follow-up is 40 months. There was 1 death since surgery from an unrelated disease. Significant decreases in St George's Respiratory Questionnaire total score (preoperative mean: 64.01, postoperative mean: 38.91, P = .002), St George's Respiratory Questionnaire symptom score (preoperative median: 82.6, postoperative median: 43.99, P < .001), and St George's Respiratory Questionnaire impact score (preoperative median: 55.78, postoperative median: 25.95, P < .001) were apparent at a median follow-up of 13 months. Comparison of preoperative and postoperative pulmonary function tests revealed a significant increase in percent predicted forced expiratory volume in 1 second (preoperative median: 74% vs postoperative median: 82%, P = .001), forced vital capacity (preoperative median: 68.5% vs postoperative median: 80.63%, P < .001), and peak expiratory flow (preoperative median: 61.5% vs postoperative median: 75%, P = .02) measured at a median follow-up of 29 months. CONCLUSIONS: Robotic tracheobronchoplasty is associated with low intermediate-term mortality. Robotic tracheobronchoplasty results in significant improvement in quality of life and postoperative pulmonary function. Longer-term follow-up is necessary to continue to elucidate the effect of robotic tracheobronchoplasty on halting pathologic progression of tracheobronchomalacia and to determine the long-term impact of tracheobronchoplasty on symptomatic and functional improvement.

Transfusion in Root Replacement for Aortic Dissection: The STS Adult Cardiac Surgery Database Analysis.

BACKGROUND: Transfusion in acute aortic syndromes has been studied in a limited fashion. We sought to describe contemporary transfusion practice for root replacement in acute (Stanford) type A aortic dissection. METHODS: The Society of Thoracic Surgeons Adult Cardiac Surgery Database was interrogated to identify patients who underwent primary aortic root replacement for acute (Stanford) type A aortic dissection (July 2014 to June 2017). Patients (n = 1558) were stratified by type of root replacement. Multivariate regression was used to determine those variables associated with transfusion and postoperative morbidity. RESULTS: Transfusion was required in 90.5% of cases (n = 1410). Operative mortality for all patients was 17.3% (261 deaths). Intraoperative red blood cell transfusion portended reduced short-term survival (odds ratio [OR] 2.00, P = .025). Massive postoperative transfusion was associated with prolonged ventilation (OR 13.47, P < .001), sepsis (OR 4.13, P < .001), and new dialysis-dependent renal failure (OR 2.43, P < .001). Women were more likely to require transfusion (OR 3.03, P < .001), as were patients who had coronary artery bypass (OR 1.57, P = .009), and those in shock (OR 2.27, P < .001). Valve-sparing aortic root replacement was associated with reduced transfusion requirements vs composite roots. Institutional case volume was not appreciably correlated with transfusion. CONCLUSIONS: Most patients undergoing root replacement for aortic dissection require blood products. Composite root replacement is associated with a greater likelihood of transfusion than a valve-sparing operation. Transfusion independently foreshadows greater operative mortality.

Variability and Reproducibility of the SYNTAX Score for Triple-Vessel Disease.

BACKGROUND: The SYNTAX score (SX) is an angiographic grading system to determine the burden and complexity of coronary artery disease (CAD) and to guide operators as to the appropriateness of percutaneous coronary intervention (PCI) vs coronary artery bypass grafting (CABG). However, variability of the SX may exist since the assessment relies on individual clinicians to visually interpret lesion severity and characteristics. We therefore aimed to assess SX variability and reproducibility among interpreting physicians. METHODS: Fifty patient angiograms were randomly selected from a registry of patients with multi-vessel CAD (treated with PCI or CABG) completed at our institution during the years 2011-2018. Each angiogram was evaluated by 6 clinicians on 2 separate occasions (minimum 8 weeks between occasions) for a total of 600 SX. Our goal was to evaluate both inter- and intra- observer reliability of SX scores. Variation in both raw score as well as risk classification (low, intermediate or high SX) was observed. Inter- and intra-observer reliability were assessed using the intra-class correlation coefficient (ICC), Cohen's weighted Kappa, and Fleiss' Kappa. RESULTS: SYNTAX scores on both assessments and across all 6 cardiologists had a mean score of 25.3. On the first assessment, the ICC for the inter-observer reliability of SX scores was 0.61 (95% CI: 0.50, 0.73). Across the 6 observers, only 16% of angiograms were classified in the same risk classification by all observers. 34% of angiograms had less than a majority agreement (3 or less observers) on risk classification. The weighted Kappa for intra-observer reliability of risk classification scores ranged from 0.30 to 0.81. Across the 6 observers, the proportion of angiograms classified as the same risk classification between each observer's 1st and 2nd assessment ranged from 46% to 84%. CONCLUSION: This study shows a wide inter- and intra- user variability in calculating SX. Our data indicates a significant limitation in using the SX to guide revascularization strategies. Further studies are needed to determine more reliable ways to quantitate burden of CAD.