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2.
JACC Cardiovasc Interv ; 17(18): 2157-2167, 2024 Sep 23.
Artigo em Inglês | MEDLINE | ID: mdl-39243268

RESUMO

BACKGROUND: Left ventricular outflow tract (LVOT) obstruction is a common, often fatal complication of transcatheter mitral valve replacement (TMVR). Laceration of the anterior mitral leaflet to prevent outflow obstruction (LAMPOON) was safe and effective at preventing LVOT obstruction at 30 days in the National Heart, Lung, and Blood Institute LAMPOON trial. OBJECTIVES: The authors report the 5-year outcomes of intentional anterior mitral leaflet laceration before SAPIEN 3 TMVR, in patients at risk of LVOT obstruction. METHODS: The National Heart, Lung, and Blood Institute LAMPOON trial was a prospective, multicenter, single-arm safety and feasibility study of LAMPOON and transseptal SAPIEN 3 TMVR in annuloplasty rings (valve-in-ring) or native mitral annular calcification (MAC) (valve-in-MAC). All subjects had high predicted risk for LVOT obstruction. Subjects were not excluded for excessive frailty or comorbidity. The primary endpoints were technical success and safety at 30 days. Secondary clinical and echocardiographic endpoints were assessed at 1 year and clinical follow-up at 5 years. RESULTS: Thirty subjects were enrolled between June 2017 and June 2018, equally between the valve-in-MAC and valve-in-ring arms. At 30 days, LAMPOON was successful in all 30 subjects, with no strokes, 1 (3%) death, and 1 (3%) moderate LVOT obstruction. Eighteen (65%) survived to 1 year, and 7 (25%) survived to 5 years. Six (20%) were hospitalized for heart failure in the first year. From baseline to 1 year, there was a 24-point improvement in Kansas City Cardiomyopathy Questionnaire score and a 60-m improvement in 6-minute walk distance. There was no significant change in N-terminal pro-brain natriuretic peptide. At 1 year, LVOT gradients remained low. CONCLUSIONS: LAMPOON enabled TMVR despite the risk for LVOT obstruction. There were no long-term complications associated with LAMPOON. The selection of inoperable patients limited assessment of long-term survival following TMVR. (NHLBI DIR LAMPOON Study: Intentional Laceration of the Anterior Mitral Leaflet to Prevent Left Ventricular Outflow Tract Obstruction During Transcatheter Mitral Valve Implantation; NCT03015194).


Assuntos
Cateterismo Cardíaco , Estudos de Viabilidade , Implante de Prótese de Valva Cardíaca , Próteses Valvulares Cardíacas , Insuficiência da Valva Mitral , Valva Mitral , Recuperação de Função Fisiológica , Obstrução do Fluxo Ventricular Externo , Humanos , Masculino , Feminino , Valva Mitral/cirurgia , Valva Mitral/diagnóstico por imagem , Valva Mitral/fisiopatologia , Fatores de Tempo , Idoso , Estudos Prospectivos , Resultado do Tratamento , Obstrução do Fluxo Ventricular Externo/diagnóstico por imagem , Obstrução do Fluxo Ventricular Externo/etiologia , Obstrução do Fluxo Ventricular Externo/prevenção & controle , Obstrução do Fluxo Ventricular Externo/cirurgia , Obstrução do Fluxo Ventricular Externo/fisiopatologia , Obstrução do Fluxo Ventricular Externo/mortalidade , Implante de Prótese de Valva Cardíaca/efeitos adversos , Implante de Prótese de Valva Cardíaca/instrumentação , Implante de Prótese de Valva Cardíaca/mortalidade , Fatores de Risco , Cateterismo Cardíaco/efeitos adversos , Cateterismo Cardíaco/instrumentação , Insuficiência da Valva Mitral/cirurgia , Insuficiência da Valva Mitral/diagnóstico por imagem , Insuficiência da Valva Mitral/fisiopatologia , Insuficiência da Valva Mitral/mortalidade , Estados Unidos , Idoso de 80 Anos ou mais , Função Ventricular Esquerda , Anuloplastia da Valva Mitral/efeitos adversos , Anuloplastia da Valva Mitral/instrumentação , Anuloplastia da Valva Mitral/mortalidade , Pessoa de Meia-Idade , Hemodinâmica
3.
Am J Cardiol ; 229: 36-46, 2024 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-39147304

RESUMO

Transcatheter pulmonary valve replacement (TPVR) is now frequently performed in patients with adult congenital heart disease. As the life expectancy of the population with adult congenital heart disease continues to improve, more patients will require pulmonary valve intervention. This study details the short-term and midterm clinical outcomes of patients aged ≥40 years who underwent TPVR. We performed an institutional retrospective cohort study that included patients aged ≥40 years who underwent TPVR (and clinical follow-up) from January 1, 2012 to January 1, 2024. Descriptive analyses, Kaplan-Meier survival analysis, and Cox proportional hazard modeling were used to determine outcomes and risk factors affecting survival. The study included 67 patients, and median age at TPVR was 48 years (43 to 57). Median hospital length of stay after TPVR was 1 day (1 to 3); periprocedural complications occurred in 5 patients, and acute kidney injury occurred in 1 patient. Median duration of follow-up was 3.5 years (0.1 to 9.7). There were 9 total deaths, and 1-, 3-, and 5-year Kaplan-Meier survival after TPVR was 95%, 91%, and 82%, respectively. Moderate or worse right ventricular dysfunction was present in 22 patients before TPVR and in 20 patients after TPVR. Inpatient status before TPVR negatively affected survival (hazard ratio 24.7, 3.3 to 186.1, p = 0.002). In conclusion, TPVR was performed in patients aged ≥40 years with favorable periprocedural and midterm follow-up outcomes including survival, but right ventricular dysfunction did not improve, and further exploration of the ideal timing of TPVR in this age group is warranted.


Assuntos
Cateterismo Cardíaco , Implante de Prótese de Valva Cardíaca , Valva Pulmonar , Humanos , Masculino , Feminino , Estudos Retrospectivos , Pessoa de Meia-Idade , Implante de Prótese de Valva Cardíaca/métodos , Adulto , Valva Pulmonar/cirurgia , Cateterismo Cardíaco/métodos , Cardiopatias Congênitas/cirurgia , Insuficiência da Valva Pulmonar/cirurgia , Taxa de Sobrevida/tendências , Seguimentos , Complicações Pós-Operatórias/epidemiologia , Fatores de Risco , Resultado do Tratamento , Tempo de Internação/estatística & dados numéricos , Estimativa de Kaplan-Meier , Modelos de Riscos Proporcionais
4.
J Soc Cardiovasc Angiogr Interv ; 3(1): 101184, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-39131978

RESUMO

Background: Radiation exposure during invasive cardiovascular procedures remains an important health care issue. Lead aprons and shields (LAS) are used to decrease radiation exposure but leave large portions of the body unshielded. The Rampart IC M1128 is a portable radiation shielding system that may significantly attenuate radiation exposure. Methods: Catheterization laboratory teams were randomized in a 1:1 fashion to perform elective invasive cardiovascular procedures utilizing either traditional LAS or the Rampart IC M1128. Radiation exposure was measured using real-time dosimetry monitoring in prespecified anatomic locations on 3 operators (position 1: first operator/fellow; position 2: second operator/attending; and position 3: catheterization laboratory nurse/technologist). Radiation exposure was measured on a per-case basis. Results: In total, 100 consecutive cases were randomized in this study (47 Rampart; 53 LAS). There was no difference in fluoroscopy time (12.3 minutes for Rampart vs 15.4 minutes for LAS; P = .52), dose area product (288 Gy⋅cm2 for Rampart vs 376.5 Gy⋅cm2 for LAS; P = .52), or scatter radiation (38.8 mRem for Rampart vs 46.8 mRem for LAS; P = .61) between the groups. There was significantly lower total body radiation (in milliroentgen equivalent man) exposure using the Rampart than that using LAS for each team member: position 1-0.1 mRem for Rampart vs 2.2 mRem for LAS; P < .001; position 2-0.1 mRem Rampart vs 3.2 mRem LAS; P < .001; and position 3-0.0 mRem for Rampart vs 0.8 mRem for LAS; P < .001. Conclusions: During routine clinical procedures, the Rampart system significantly decreases total body radiation exposure compared with traditional LAS.

5.
J Soc Cardiovasc Angiogr Interv ; 3(5): 101352, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-39132463

RESUMO

Coronary artery obstruction is an uncommon yet devastating complication of transcatheter aortic valve replacement (TAVR) and may necessitate leaflet modification. A 38-year-old man presented to our center with quadricuspid aortic valve with severe aortic regurgitation. Double leaflet modification was performed with the Bioprosthetic or native Aortic Scallop Intentional Laceration to prevent Iatrogenic Coronary Artery obstruction (BASILICA) technique prior to TAVR, creating 6 leaflets from 4. The patient tolerated the procedure well with symptomatic improvement. Follow-up transthoracic echocardiogram showed normal bioprosthetic aortic valve function. This case demonstrates feasibility of this procedure with comprehensive preprocedural analysis and intraprocedural imaging guidance.

7.
Interv Cardiol ; 19: e10, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39081829

RESUMO

Mitral regurgitation is the most common valvular disease in the developed world, with approximately 24.2 million people being affected worldwide and a higher prevalence in older age groups. Surgical correction of degenerative mitral regurgitation is the standard of care and can restore cardiac function and provide a lasting result, especially when the mitral valve can be repaired. Secondary mitral regurgitation, or functional mitral regurgitation (FMR), describes atrial or ventricular factors leading to poor coaptation of an otherwise non-diseased valve. For FMR, traditional surgery has not produced the same level of benefit. Transcatheter mitral repair and replacement techniques that mimic surgical correction are under investigation. Transcatheter edge-to-edge repair is the only approved catheter-based therapy for FMR in the US. Here, the transcatheter treatment options for FMR are reviewed.

8.
Heart Rhythm ; 2024 Jul 03.
Artigo em Inglês | MEDLINE | ID: mdl-38969051

RESUMO

BACKGROUND: Data on transvenous (TV) lead-associated superior vena cava (SVC) syndrome are limited. The management of this problem might require a multidisciplinary approach, often involving transvenous lead extraction (TLE) followed by angioplasty and stenting. OBJECTIVE: The purpose of this study was to describe the management and outcome of TV lead-associated SVC syndrome. METHODS: We retrospectively identified patients with a diagnosis of SVC syndrome and TV leads at Emory Healthcare between 2015 and 2023. RESULTS: Fifteen patients with lead-related SVC syndrome were identified. The cohort average age was 50 years. Symptoms included swelling of the face, neck, and upper extremities (67%); shortness of breath (53%); and lightheadedness (40%). Patients had an average of 2 ± 0.7 leads crossing the SVC, with a lead dwell time of 9.8 ± 7.5 years. Thirteen patients were managed with TLE, followed by SVC stenting and angioplasty in 10 and angioplasty alone in 2; 1 patient had no intervention after TLE. One patient was managed with anticoagulation, and another had angioplasty and stenting with lead jailing. One patient experienced SVC perforation and cardiac tamponade during SVC stenting, which was managed successfully with a covered stent and pericardiocentesis. Among the 12 patients with TLE and angioplasty ± stenting, 7 underwent reimplantation of a transvenous lead. Two of those patients had symptoms recurrence, and none of the 5 patients without lead reimplantation had recurrence of symptoms. CONCLUSION: Lead-related SVC syndrome management requires a multidisciplinary approach often including TLE followed by angioplasty and stenting. Avoiding TV lead reimplantation might help reduce symptoms recurrence.

9.
Blood Cancer Discov ; 5(4): 258-266, 2024 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-38747505

RESUMO

Chimeric antigen receptor (CAR) T-cell therapy produces high response rates in refractory B-cell non-Hodgkin lymphoma, but long-term data are minimal to date. In this study, we present long-term follow-up of a pilot trial testing a CD20-targeting third-generation CAR in patients with relapsed B-cell lymphomas following cyclophosphamide-only lymphodepletion. Two of the three patients in the trial, with mantle cell lymphoma and follicular lymphoma, had remissions lasting more than 7 years, though they ultimately relapsed. The absence of B-cell aplasia in both patients suggested a lack of functional CAR T-cell persistence, leading to the hypothesis that endogenous immune responses were responsible for these long-term remissions. Correlative immunologic analyses supported this hypothesis, with evidence of new humoral and cellular antitumor immune responses proximal to clinical response time points. Collectively, our results suggest that CAR T-cell therapy may facilitate epitope spreading and endogenous immune response formation in lymphomas. Significance: Two of three patients treated with CD20-targeted CAR T-cell therapy had long-term remissions, with evidence of endogenous antitumor immune response formation. Further investigation is warranted to develop conditions that promote epitope spreading in lymphomas.


Assuntos
Antígenos CD20 , Imunoterapia Adotiva , Receptores de Antígenos Quiméricos , Indução de Remissão , Humanos , Antígenos CD20/imunologia , Receptores de Antígenos Quiméricos/imunologia , Imunoterapia Adotiva/métodos , Pessoa de Meia-Idade , Masculino , Feminino , Idoso , Linfoma Folicular/terapia , Linfoma Folicular/imunologia , Projetos Piloto , Linfócitos T/imunologia , Linfócitos T/transplante , Resultado do Tratamento
10.
JACC Clin Electrophysiol ; 10(5): 814-825, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38811066

RESUMO

BACKGROUND: Deep intramural ventricular tachycardia substrate targets are difficult to access, map, and ablate from endocardial and epicardial surfaces, resulting in high recurrence rates. OBJECTIVES: In this study, the authors introduce a novel approach called ventricular intramyocardial navigation for tachycardia ablation guided by electrograms (VINTAGE) to access and ablate anatomically challenging ventricular tachycardia from within the myocardium. METHODS: Guidewire/microcatheter combinations were navigated deep throughout the extravascular myocardium, accessed directly from the right ventricle cavity, in Yorkshire swine (6 naive, 1 infarcted). Devices were steered to various intramyocardial targets including the left ventricle summit, guided by fluoroscopy, unipolar electrograms, and/or electroanatomic mapping. Radiofrequency ablations were performed to characterize ablation parameters and reproducibility. Intramyocardial saline irrigation began 1 minute before ablation and continued throughout. Lesions were analyzed on cardiac magnetic resonance and necropsy. RESULTS: VINTAGE was feasible in all animals within naive and infarcted myocardium. Forty-three lesions were created, using various guidewires and power settings. Forty-one (95%) lesions were detected on cardiac magnetic resonance and 38 (88%) on necropsy; all undetected lesions resulted from intentionally subtherapeutic ablation energy (10 W). Larger-diameter guidewires yielded larger size lesions. Lesion volumes on necropsy were significantly larger at 20 W than 10 W (178 mm3 [Q1-Q3: 104-382 mm3] vs 49 mm3 [Q1-Q3: 35-93 mm3]; P = 0.02). Higher power (30 W) did not create larger lesions. Median impedance dropped with preablation irrigation by 12 Ω (Q1-Q3: 8-17 Ω), followed by a further 15-Ω (Q1-Q3: 11-19 Ω) drop during ablation. Intramyocardial navigation, ablation, and irrigation were not associated with any complications. CONCLUSIONS: VINTAGE was safe and effective at creating intramural ablation lesions in targets traditionally considered inaccessible from the endocardium and epicardium, both naive and infarcted. Intramyocardial guidewire irrigation and ablation at 20 W creates reproducibly large intramural lesions.


Assuntos
Ablação por Cateter , Técnicas Eletrofisiológicas Cardíacas , Taquicardia Ventricular , Animais , Taquicardia Ventricular/cirurgia , Taquicardia Ventricular/fisiopatologia , Ablação por Cateter/métodos , Ablação por Cateter/instrumentação , Suínos , Técnicas Eletrofisiológicas Cardíacas/métodos , Ventrículos do Coração/cirurgia , Ventrículos do Coração/fisiopatologia , Ventrículos do Coração/diagnóstico por imagem
11.
Am J Cardiol ; 220: 84-91, 2024 06 01.
Artigo em Inglês | MEDLINE | ID: mdl-38604492

RESUMO

Development of functional tricuspid regurgitation (TR) because of chronic mitral disease and subsequent heart failure is common. However, the effect of TR on clinical outcomes after transcatheter mitral valve replacement (TMVR) remains unclear. We aimed to evaluate the impact of baseline TR on outcomes after TMVR. This was a single-center, retrospective analysis of patients who received valve-in-valve or valve-in-ring TMVR between 2012 and 2022. Patients were categorized into none/mild TR and moderate/severe TR based on baseline echocardiography. The primary outcome was 3 years all-cause death and the secondary outcomes were in-hospital events. Of the 135 patients who underwent TMVR, 64 (47%) exhibited none/mild TR at baseline, whereas 71 (53%) demonstrated moderate/severe TR. There were no significant differences in in-hospital events between the groups. At 3 years, the moderate/severe TR group exhibited a significantly increased risk of all-cause death (adjusted hazard ratio 3.37, 95% confidence interval 1.35 to 8.41, p = 0.009). When patients with baseline moderate/severe TR were stratified by echocardiography at 30 days into improved (36%) and nonimproved (64%) TR groups, although limited by small sample size, there was no significant difference in 3-year all-cause mortality (p = 0.48). In conclusion, this study investigating the impact of baseline TR on clinical outcomes revealed that moderate/severe TR is prevalent in those who underwent TMVR and is an independent predictor of 3-year all-cause mortality. Earlier mitral valve intervention before the development of significant TR may play a pivotal role in improving outcomes after TMVR.


Assuntos
Ecocardiografia , Implante de Prótese de Valva Cardíaca , Insuficiência da Valva Mitral , Insuficiência da Valva Tricúspide , Humanos , Masculino , Insuficiência da Valva Tricúspide/cirurgia , Feminino , Estudos Retrospectivos , Idoso , Implante de Prótese de Valva Cardíaca/métodos , Insuficiência da Valva Mitral/cirurgia , Cateterismo Cardíaco/métodos , Índice de Gravidade de Doença , Resultado do Tratamento , Causas de Morte/tendências , Complicações Pós-Operatórias/epidemiologia , Idoso de 80 Anos ou mais , Valva Mitral/cirurgia , Valva Mitral/diagnóstico por imagem
12.
JACC Cardiovasc Interv ; 17(7): 874-886, 2024 Apr 08.
Artigo em Inglês | MEDLINE | ID: mdl-38599690

RESUMO

BACKGROUND: Adequate valve performance after surgical mitral valve repair with an annuloplasty ring is not always sustained over time. The risk of repeat mitral valve surgery may be high in these patients. Transcatheter mitral valve-in-ring (MViR) is emerging as an alternative for high-risk patients. OBJECTIVES: The authors sought to assess contemporary outcomes of MViR using third-generation balloon-expandable aortic transcatheter heart valves. METHODS: Patients who underwent MViR and were enrolled in the STDS/ACC TVT (Society of Thoracic Surgeons/American College of Cardiology Transcatheter Valve Therapy) Registry between August 2015 and December 2022 were analyzed. RESULTS: A total of 820 patients underwent MViR at 236 sites, mean age was 72.2 ± 10.4 years, 50.9% were female, mean STS score was 8.2% ± 6.9%, and most (78%) were in NYHA functional class III to IV. Mean left ventricular ejection fraction was 47.8% ± 14.2%, mean mitral gradient was 8.9 ± 7.0 mm Hg, and 75.5% had ≥ moderate mitral regurgitation. Access was transseptal in 93.9% with 88% technical success. All-cause mortality at 30 days was 8.3%, and at 1 year, 22.4%, with a reintervention rate of 9.1%. At 1-year follow-up, 75.6% were NYHA functional class I to II, Kansas City Cardiomyopathy Questionnaire score increased by 25.9 ± 29.1 points, mean mitral valve gradient was 8.4 ± 3.4 mm Hg, and 91.7% had ≤ mild mitral regurgitation. CONCLUSIONS: MViR with third-generation balloon-expandable aortic transcatheter heart valves is associated with a significant reduction in mitral regurgitation and improvement in symptoms at 1 year, but with elevated valvular gradients and a high reintervention rate. MViR is a reasonable alternative for high-risk patients unable undergo surgery who have appropriate anatomy for the procedure. (STS/ACC TVT Registry Mitral Module [TMVR]; NCT02245763).


Assuntos
Implante de Prótese de Valva Cardíaca , Próteses Valvulares Cardíacas , Insuficiência da Valva Mitral , Humanos , Feminino , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Masculino , Valva Mitral/diagnóstico por imagem , Valva Mitral/cirurgia , Insuficiência da Valva Mitral/diagnóstico por imagem , Insuficiência da Valva Mitral/cirurgia , Insuficiência da Valva Mitral/etiologia , Volume Sistólico , Resultado do Tratamento , Função Ventricular Esquerda , Cateterismo Cardíaco/métodos
13.
Circ Cardiovasc Interv ; 17(5): e013898, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38533653

RESUMO

BACKGROUND: Acute aortic regurgitation is life-threatening with few nonsurgical options for immediate stabilization. We propose Trans-Aortic Balloon to Ease Regurgitation Applying Counter-Pulsation (TABERNACL), a simple, on-table temporary valve using commercially available equipment to temporize acute severe aortic regurgitation. METHODS: We hypothesize that an appropriately sized commercial balloon dilatation catheter-straddling the aortic annulus and connected to a counterpulsation console-can serve as a temporizing valve to restore hemodynamic stability in acute aortic regurgitation. We performed benchtop testing of valvuloplasty, angioplasty, and sizing balloons as counterpulsation balloons. TABERNACL was assessed in vivo in a porcine model of acute aortic regurgitation (n=8). We also tested a static undersized, continuously inflated transvalvular balloon as a spacer intended physically to obstruct the regurgitant orifice. RESULTS: Benchtop testing identified that Tyshak II and PTS sizing (NuMed Braun) balloon catheters performed adequately as temporary valves (ie, complete inflation and deflation with each cycle) and resisted fatigue, in contrast to others. When TABERNACL was used in the acute severe regurgitation animals, there was immediate hemodynamic improvement, with a significant 35% increase in diastolic aortic pressure by 16 mm Hg ([95% CI, 7-25] P=0.0056), 34% reduction in left ventricular end-diastolic pressure by -7 mm Hg ([95% CI, -10 to -5] P=0.0006), improvement in the aortic diastolic index by 0.28 ([95% CI, 0.18-0.39] P=0.0009), and reversal of electrocardiographic myocardial ischemia. As an alternative, static balloon inflation across the aortic valve stabilized regurgitation hemodynamics at the expense of a new aortic gradient and caused excessive ectopy from balloon movement in the left ventricular outflow tract. CONCLUSIONS: TABERNACL improves hemodynamics and reduces coronary ischemia by electrocardiography in animals with acute severe aortic regurgitation. TABERNACL valves obstruct the diastolic regurgitant orifice without systolic obstruction. This may prove a lifesaving bridge to definitive valve replacement therapy.


Assuntos
Insuficiência da Valva Aórtica , Valvuloplastia com Balão , Modelos Animais de Doenças , Hemodinâmica , Animais , Hemodinâmica/efeitos dos fármacos , Insuficiência da Valva Aórtica/fisiopatologia , Insuficiência da Valva Aórtica/etiologia , Insuficiência da Valva Aórtica/diagnóstico por imagem , Sus scrofa , Valva Aórtica/fisiopatologia , Valva Aórtica/cirurgia , Valva Aórtica/diagnóstico por imagem , Desenho de Equipamento , Recuperação de Função Fisiológica , Doença Aguda , Cateteres Cardíacos , Fatores de Tempo , Índice de Gravidade de Doença , Função Ventricular Esquerda/efeitos dos fármacos
14.
Interv Cardiol Clin ; 13(2): 217-225, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38432764

RESUMO

Left ventricular outflow tract (LVOT) obstruction is a life-threatening complication of transcatheter mitral valve replacement. In-depth analysis of pre-procedural computed tomography enables accurate prediction of this risk. Several techniques for LVOT modification, including Laceration of the Anterior Mitral leaflet to Prevent Outflow ObtructioN, preemptive alcohol septal ablation, preemptive radiofrequency ablation, and Septal Scoring Along the Midline Endocardium, have been described as effective strategies to mitigate this risk. This review aims to explore the indications, procedural steps, and outcomes associated with these LVOT modification techniques.


Assuntos
Endocárdio , Valva Mitral , Humanos , Valva Mitral/diagnóstico por imagem , Valva Mitral/cirurgia , Tomografia Computadorizada por Raios X
15.
J Am Coll Cardiol ; 83(14): 1257-1272, 2024 Apr 09.
Artigo em Inglês | MEDLINE | ID: mdl-38471643

RESUMO

BACKGROUND: Left ventricular outflow tract (LVOT) obstruction is a source of morbidity in hypertrophic cardiomyopathy (HCM) and a life-threatening complication of transcatheter mitral valve replacement (TMVR) and transcatheter aortic valve replacement (TAVR). Available surgical and transcatheter approaches are limited by high surgical risk, unsuitable septal perforators, and heart block requiring permanent pacemakers. OBJECTIVES: The authors report the initial experience of a novel transcatheter electrosurgical procedure developed to mimic surgical myotomy. METHODS: We used septal scoring along midline endocardium (SESAME) to treat patients, on a compassionate basis, with symptomatic LVOT obstruction or to create space to facilitate TMVR or TAVR. RESULTS: In this single-center retrospective study between 2021 and 2023, 76 patients underwent SESAME. In total, 11 (14%) had classic HCM, and the remainder underwent SESAME to facilitate TMVR or TAVR. All had technically successful SESAME myocardial laceration. Measures to predict post-TMVR LVOT significantly improved (neo-LVOT 42 mm2 [Q1-Q3: 7-117 mm2] to 170 mm2 [Q1-Q3: 95-265 mm2]; P < 0.001; skirt-neo-LVOT 169 mm2 [Q1-Q3: 153-193 mm2] to 214 mm2 [Q1-Q3: 180-262 mm2]; P < 0.001). Among patients with HCM, SESAME significantly decreased invasive LVOT gradients (resting: 54 mm Hg [Q1-Q3: 40-70 mm Hg] to 29 mm Hg [Q1-Q3: 12-36 mm Hg]; P = 0.023; provoked 146 mm Hg [Q1-Q3: 100-180 mm Hg] to 85 mm Hg [Q1-Q3: 40-120 mm Hg]; P = 0.076). A total of 74 (97.4%) survived the procedure. Five experienced 3 of 76 (3.9%) iatrogenic ventricular septal defects that did not require repair and 3 of 76 (3.9%) ventricular free wall perforations. Neither occurred in patients treated for HCM. Permanent pacemakers were required in 4 of 76 (5.3%), including 2 after concomitant TAVR. Lacerations were stable and did not propagate after SESAME (remaining septum: 5.9 ± 3.3 mm to 6.1 ± 3.2 mm; P = 0.8). CONCLUSIONS: With further experience, SESAME may benefit patients requiring septal reduction therapy for obstructive hypertrophic cardiomyopathy as well as those with LVOT obstruction after heart valve replacement, and/or can help facilitate transcatheter valve implantation.


Assuntos
Cardiomiopatia Hipertrófica , Implante de Prótese de Valva Cardíaca , Miotomia , Obstrução da Via de Saída Ventricular Esquerda , Obstrução do Fluxo Ventricular Externo , Humanos , Valva Mitral/cirurgia , Implante de Prótese de Valva Cardíaca/métodos , Estudos Retrospectivos , Cateterismo Cardíaco/métodos , Obstrução do Fluxo Ventricular Externo/etiologia , Obstrução do Fluxo Ventricular Externo/cirurgia , Resultado do Tratamento , Cardiomiopatia Hipertrófica/complicações , Miotomia/efeitos adversos
16.
JACC Cardiovasc Interv ; 17(5): 635-644, 2024 Mar 11.
Artigo em Inglês | MEDLINE | ID: mdl-38244000

RESUMO

BACKGROUND: Transcatheter closure of transcatheter heart valve (THV)-related paravalvular leak (PVL) is associated with a high failure rate with available devices due to the complex interaction of THV and aortic/mitral annulus. OBJECTIVES: This study reports on novel transcatheter techniques to treat PVL after THV. METHODS: The authors describe consecutive patients who underwent PVL closure after transcatheter aortic valve replacement (TAVR) or transcatheter mitral valve replacement (TMVR). A covered self-expanding stent (Viabahn) was deployed in the defect to create a seal between the THV and annulus. A vascular plug (Amplatzer Vascular Plug 2 [AVP2] or AVP4) was then deployed inside the covered stent to obliterate PVL. RESULTS: Eight patients with THV-related PVL were treated using this method (aortic [3 SAPIEN, 1 Evolut], mitral [2 SAPIEN-in-MAC (mitral annular calcification), 2 M3 TMVR). Various combinations of stents and plugs were used (5 mm × 2.5 cm Viabahn + 6 mm AVP4 [n = 2], 8 mm × 2.5 cm Viabahn + 10 mm AVP2 [n = 5], and 10 mm × 5.0 cm Viabahn + 12 mm AVP2 [n = 1]). All had technical success with immediate elimination of target PVL, without in-hospital complications. None had signs of postprocedure hemolysis. All patients were discharged alive (median 3.5 days [Q1-Q3: 1.0-4.8 days]). No residual PVL was seen at discharge, except for 1 patient with mild regurgitation due to another untreated PVL location. One patient died before 30 days due to complication of valve-in-MAC TMVR. In remaining patients, none had recurrence of PVL at 30 days. Symptoms decreased to NYHA functional class I/II in 6 patients. NYHA functional class III symptoms remained in 1 patient with mitral regurgitation awaiting subsequent valve replacement procedure. CONCLUSIONS: The technique of sequential deployment of a covered stent and vascular plug may effectively treat THV-related PVL.


Assuntos
Estenose da Valva Aórtica , Implante de Prótese de Valva Cardíaca , Próteses Valvulares Cardíacas , Substituição da Valva Aórtica Transcateter , Humanos , Próteses Valvulares Cardíacas/efeitos adversos , Falha de Prótese , Resultado do Tratamento , Substituição da Valva Aórtica Transcateter/efeitos adversos , Stents , Valva Aórtica/diagnóstico por imagem , Valva Aórtica/cirurgia , Estenose da Valva Aórtica/cirurgia
18.
JACC Case Rep ; 27: 102074, 2023 Dec 06.
Artigo em Inglês | MEDLINE | ID: mdl-38094720

RESUMO

Critical bioprosthetic aortic valve stenosis is a rare finding in the second trimester of pregnancy. We present the case of a successful valve-in-valve transcatheter aortic valve replacement in a 16-weeks-pregnant patient. We describe the significant role of the multidisciplinary heart team during preconception and pregnancy.

19.
Circ Cardiovasc Interv ; 16(10): e013243, 2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-37732604

RESUMO

BACKGROUND: Postinfarction ventricular septal defect (VSD) is a catastrophic complication of myocardial infarction. Surgical repair still has poor outcomes. This report describes clinical outcomes after a novel hybrid transcatheter/surgical repair in patients with apical VSD. METHODS: Seven patients with postmyocardial infarction apical VSD underwent hybrid transcatheter repair via subxiphoid surgical access. A transcatheter occluder (Amplatzer Septal Occluder) with a trailing premounted suture was deployed through the right ventricular wall and through the ventricular septum into the left ventricular apex. The trailing suture was used to connect an anchor external to the right ventricular wall. Tension on the suture then collapses the right ventricular free wall against the septum and left ventricular occluder, thereby obliterating the VSD. Outcomes were compared with 9 patients who underwent surgical repair using either patch or primary suture closure. RESULTS: All patients had significant left-to-right shunt (Qp:Qs 2.5:1; interquartile range [IQR, 2.1-2.6] hybrid repair versus 2.0:1 [IQR, 2.0-2.5] surgical repair), and elevated right ventricular systolic pressure (62 [IQR, 46-71] versus 49 [IQR, 43-54] mm Hg, respectively). All had severely depressed stroke volume index (22 versus 21 mL/m2) with ≈45% in each group requiring mechanical support preprocedurally. The procedure was done 15 (IQR, 10-50) versus 24 (IQR, 10-134) days postmyocardial infarction, respectively. Both groups of patients underwent repair with technical success and without intraprocedural death. One patient in the hybrid group and 4 in the surgical group developed multiorgan failure. The hybrid group had a higher survival at discharge (86% versus 56%) and at 30 days (71% versus 56%), but similar at 1 year (57% versus 56%). During follow-up, 1 patient in each group required reintervention for residual VSD (hybrid: 9 months versus surgical: 5 days). CONCLUSIONS: Early intervention with a hybrid transcatheter/surgical repair may be a viable alternative to traditional surgery for postinfarction apical VSD.


Assuntos
Infarto Miocárdico de Parede Anterior , Comunicação Interventricular , Infarto do Miocárdio , Dispositivo para Oclusão Septal , Humanos , Resultado do Tratamento , Cateterismo Cardíaco , Comunicação Interventricular/diagnóstico por imagem , Comunicação Interventricular/etiologia , Comunicação Interventricular/cirurgia , Infarto do Miocárdio/complicações , Infarto do Miocárdio/diagnóstico por imagem , Infarto do Miocárdio/terapia
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