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1.
JACC Adv ; 2(10): 100701, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38938489

RESUMO

Background: Altered coagulation is a striking feature of COVID-19. Adult patients with congenital heart disease (ACHD) are prone to thromboembolic (TE) and bleeding complications. Objectives: The purpose of this study was to investigate the prevalence and risk factors for COVID-19 TE/bleeding complications in ACHD patients. Methods: COVID-19-positive ACHD patients were included between May 2020 and November 2021. TE events included ischemic cerebrovascular accident, systemic and pulmonary embolism, deep venous thrombosis, myocardial infarction, and intracardiac thrombosis. Major bleeding included cases with hemoglobin drop >2 g/dl, involvement of critical sites, or fatal bleeding. Severe infection was defined as need for intensive care unit, endotracheal intubation, renal replacement therapy, extracorporeal membrane oxygenation, or death. Patients with TE/bleeding were compared to those without events. Factors associated with TE/bleeding were determined using logistic regression. Results: Of 1,988 patients (age 32 [IQR: 25-42] years, 47% male, 59 ACHD centers), 30 (1.5%) had significant TE/bleeding: 12 TE events, 12 major bleeds, and 6 with both TE and bleeding. Patients with TE/bleeding had higher in-hospital mortality compared to the remainder cohort (33% vs 1.7%; P < 0.0001) and were in more advanced physiological stage (P = 0.032) and NYHA functional class (P = 0.01), had lower baseline oxygen saturation (P = 0.0001), and more frequently had a history of atrial arrhythmia (P < 0.0001), previous hospitalization for heart failure (P < 0.0007), and were more likely hospitalized for COVID-19 (P < 0.0001). By multivariable logistic regression, prior anticoagulation (OR: 4.92; 95% CI: 2-11.76; P = 0.0003), cardiac injury (OR: 5.34; 95% CI: 1.98-14.76; P = 0.0009), and severe COVID-19 (OR: 17.39; 95% CI: 6.67-45.32; P < 0.0001) were independently associated with increased risk of TE/bleeding complications. Conclusions: ACHD patients with TE/bleeding during COVID-19 infection have a higher in-hospital mortality from the illness. Risk of coagulation disorders is related to severe COVID-19, cardiac injury during infection, and use of anticoagulants.

2.
Front Cardiovasc Med ; 9: 1006063, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36440051

RESUMO

Objectives: The objective of this study was to assess the mechanical performance of the Lifetech IBS Angel stents during overdilation as is often required in pediatric applications; including time of first fracture, foreshortening, and the type of fracturing that occurs. Materials and methods: In vitro testing was performed and repeated for each stent three times under physiologic conditions with continuous audiovisual imaging allowing for post-testing evaluations. Assessment of sheath fit was also completed. Results: A total of 47 stents on monorail system were overdilated to complete fracture after passing through either a 4 or 5 French sheath. First strut fracture occurred in 4 and 6 mm stents when they reached greater than 50% overexpansion. Larger stents could achieve at least 30% increased diameter prior to first strut fracture. No fragmentation of any of the stents was seen throughout testing. Conclusion: The IBS Angel has thin struts allowing for a lower profile with increased maneuverability and use with smaller sheaths. Embolization potential of strut fragments was not seen. Increased diameter well beyond design parameters was seen in all with acceptable foreshortening.

3.
J Am Coll Cardiol ; 77(13): 1644-1655, 2021 04 06.
Artigo em Inglês | MEDLINE | ID: mdl-33795039

RESUMO

BACKGROUND: Adults with congenital heart disease (CHD) have been considered potentially high risk for novel coronavirus disease-19 (COVID-19) mortality or other complications. OBJECTIVES: This study sought to define the impact of COVID-19 in adults with CHD and to identify risk factors associated with adverse outcomes. METHODS: Adults (age 18 years or older) with CHD and with confirmed or clinically suspected COVID-19 were included from CHD centers worldwide. Data collection included anatomic diagnosis and subsequent interventions, comorbidities, medications, echocardiographic findings, presenting symptoms, course of illness, and outcomes. Predictors of death or severe infection were determined. RESULTS: From 58 adult CHD centers, the study included 1,044 infected patients (age: 35.1 ± 13.0 years; range 18 to 86 years; 51% women), 87% of whom had laboratory-confirmed coronavirus infection. The cohort included 118 (11%) patients with single ventricle and/or Fontan physiology, 87 (8%) patients with cyanosis, and 73 (7%) patients with pulmonary hypertension. There were 24 COVID-related deaths (case/fatality: 2.3%; 95% confidence interval: 1.4% to 3.2%). Factors associated with death included male sex, diabetes, cyanosis, pulmonary hypertension, renal insufficiency, and previous hospital admission for heart failure. Worse physiological stage was associated with mortality (p = 0.001), whereas anatomic complexity or defect group were not. CONCLUSIONS: COVID-19 mortality in adults with CHD is commensurate with the general population. The most vulnerable patients are those with worse physiological stage, such as cyanosis and pulmonary hypertension, whereas anatomic complexity does not appear to predict infection severity.


Assuntos
COVID-19 , Procedimentos Cirúrgicos Cardíacos , Cianose , Cardiopatias Congênitas , Hipertensão Pulmonar , Adulto , COVID-19/mortalidade , COVID-19/terapia , Teste para COVID-19/métodos , Procedimentos Cirúrgicos Cardíacos/métodos , Procedimentos Cirúrgicos Cardíacos/estatística & dados numéricos , Causalidade , Comorbidade , Cianose/diagnóstico , Cianose/etiologia , Cianose/mortalidade , Feminino , Saúde Global/estatística & dados numéricos , Cardiopatias Congênitas/classificação , Cardiopatias Congênitas/epidemiologia , Cardiopatias Congênitas/fisiopatologia , Cardiopatias Congênitas/terapia , Hospitalização/estatística & dados numéricos , Humanos , Hipertensão Pulmonar/diagnóstico , Hipertensão Pulmonar/etiologia , Hipertensão Pulmonar/mortalidade , Masculino , Mortalidade , Gravidade do Paciente , Fatores de Risco , SARS-CoV-2/isolamento & purificação , Avaliação de Sintomas
4.
Biochim Biophys Acta Mol Cell Res ; 1868(7): 119026, 2021 06.
Artigo em Inglês | MEDLINE | ID: mdl-33845096

RESUMO

Chemotactic and angiogenic factors secreted within the tumor microenvironment eventually facilitate the metastatic dissemination of cancer cells. Calcium-sensing receptor (CaSR) activates secretory pathways in breast cancer cells via a mechanism driven by vesicular trafficking of this receptor. However, it remains to be elucidated how endosomal proteins in secretory vesicles are controlled by CaSR. In the present study, we demonstrate that CaSR promotes expression of Rab27B and activates this secretory small GTPase via PI3K, PKA, mTOR and MADD, a guanine nucleotide exchange factor, also known as DENN/Rab3GEP. Active Rab27B leads secretion of various cytokines and chemokines, including IL-6, IL-1ß, IL-8, IP-10 and RANTES. Expression of Rab27B is stimulated by CaSR in MDA-MB-231 and MCF-7 breast epithelial cancer cells, but not in non-cancerous MCF-10A cells. This regulatory mechanism also occurs in HeLa and PC3 cells. Our findings provide insightful information regarding how CaSR activates a Rab27B-dependent mechanism to control secretion of factors known to intervene in paracrine communication circuits within the tumor microenvironment.


Assuntos
Neoplasias da Mama/metabolismo , Receptores de Detecção de Cálcio/metabolismo , Proteínas rab de Ligação ao GTP/metabolismo , Cálcio/metabolismo , Linhagem Celular Tumoral , Quimiocinas/metabolismo , Quimiotaxia , Proteínas Quinases Dependentes de AMP Cíclico , Citocinas/metabolismo , Proteínas Adaptadoras de Sinalização de Receptores de Domínio de Morte/metabolismo , Feminino , Expressão Gênica/genética , Regulação Neoplásica da Expressão Gênica/genética , Fatores de Troca do Nucleotídeo Guanina/metabolismo , Humanos , Fosfatidilinositol 3-Quinase , Receptores de Detecção de Cálcio/fisiologia , Via Secretória/fisiologia , Serina-Treonina Quinases TOR , Microambiente Tumoral , Proteínas rab de Ligação ao GTP/fisiologia
5.
Cardiol Young ; 31(9): 1525-1527, 2021 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-33766174

RESUMO

Transcatheter closure of ventricular septal defects is considered first-line therapy when anatomically appropriate but is often challenged by proximity to the conduction system in perimembranous defects, or irregular defect shape, especially residual defects that may remain post-operatively. Advancements in device design, however, have allowed for significant improvements in deployment techniques and overall safety. Here we describe the first use of the Lifetech Konar-multifunction™ occluder device in North America, and our specific use of this device to close complex post-operative muscular and a perimembranous-ventricular septal defects in the same patient.


Assuntos
Comunicação Interventricular , Dispositivo para Oclusão Septal , Cateterismo Cardíaco , Comunicação Interventricular/cirurgia , Humanos , América do Norte , Resultado do Tratamento
6.
Pediatr Cardiol ; 42(2): 289-293, 2021 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-33048185

RESUMO

The objective of this study was to evaluate the safety and efficacy of combining transcatheter pulmonary valve replacement (TPVR) and electrophysiology (EP) procedures. A retrospective review was undertaken to identify TPVR and EP procedures that were concomitantly performed in the cardiac catheterization laboratory at University of Iowa Stead Family Children's Hospital from January 2011 to October 2019. Procedural and follow-up data were compared between patients who underwent TPVR and EP procedures in the same setting to those who received TPVR or EP procedure separately and that were similar in age and cardiac anatomy. A total of 8 patients underwent combined TPVR and EP procedures. One patient was excluded due to lack of adequate control, leaving seven study subjects (57% female; median age at time of procedure 16 years). The median follow-up time was 11.5 months (range 2-36 months). Patients who received combined TPVR and EP had shorter recovery times (combined: median 18.9 h; IQR 18.35-19.5 vs separate: median 27.98 h; IQR 21.42-39.25; p-value 0.031), shorter hospital length of stay (combined: median 27.5 h; IQR 26.47-31.4 vs separate: median 38.4 h; IQR 33.42-51.50; p-value 0.016), and a 51% reduction in total hospital charges (combined: median $171,640; IQR 135.43-219.22 vs separate: median $333,560 IQR 263.20-400.98; p-value 0.016). There were no significant differences in radiation dose or procedure time between the combined and control groups. The median radiation time for those who had the combination procedure was 30.5 min [IQR 29.6-47.9], and the median dose area product was 215 mGy [IQR 158-935]. In conclusion, combining TPVR and EP procedures is feasible, safe, and economically advantageous.


Assuntos
Cateterismo Cardíaco/métodos , Técnicas Eletrofisiológicas Cardíacas/métodos , Cardiopatias/cirurgia , Implante de Prótese de Valva Cardíaca/métodos , Valva Pulmonar/cirurgia , Adolescente , Adulto , Procedimentos Cirúrgicos Cardíacos , Criança , Terapia Combinada , Técnicas Eletrofisiológicas Cardíacas/economia , Feminino , Próteses Valvulares Cardíacas , Implante de Prótese de Valva Cardíaca/economia , Custos Hospitalares , Humanos , Tempo de Internação , Masculino , Insuficiência da Valva Pulmonar/cirurgia , Estudos Retrospectivos , Tetralogia de Fallot/cirurgia , Resultado do Tratamento , Adulto Jovem
7.
Clin Case Rep ; 8(8): 1409-1412, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-32884764

RESUMO

Catecholaminergic polymorphic ventricular tachycardia (CPVT) is a channelopathy which can lead to fatal ventricular arrhythmias. The diagnosis can be challenging due to a wide variety of clinical presentations. In this case, we describe the unusual presentation and subsequent workup of a young patient who was ultimately diagnosed with CPVT.

8.
Heart Rhythm ; 17(10): 1729-1737, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-32497761

RESUMO

BACKGROUND: Abrupt loss of ventricular preexcitation on noninvasive evaluation, or nonpersistent preexcitation, in Wolff-Parkinson-White syndrome (WPW) is thought to indicate a low risk of life-threatening events. OBJECTIVE: The purpose of this study was to compare accessory pathway (AP) characteristics and occurrences of sudden cardiac arrest (SCA) and rapidly conducted preexcited atrial fibrillation (RC-AF) in patients with nonpersistent and persistent preexcitation. METHODS: Patients 21 years or younger with WPW and invasive electrophysiology study (EPS) data, SCA, or RC-AF were identified from multicenter databases. Nonpersistent preexcitation was defined as absence/sudden loss of preexcitation on electrocardiogram, Holter monitoring, or exercise stress test. RC-AF was defined as clinical preexcited atrial fibrillation with shortest preexcited R-R interval (SPERRI) ≤ 250 ms. AP effective refractory period (APERP), SPERRI at EPS , and shortest preexcited paced cycle length (SPPCL) were collected. High-risk APs were defined as APERP, SPERRI, or SPPCL ≤ 250 ms. RESULTS: Of 1589 patients, 244 (15%) had nonpersistent preexcitation and 1345 (85%) had persistent preexcitation. There were no differences in sex (58% vs 60% male; P=.49) or age (13.3±3.6 years vs 13.1±3.9 years; P=.43) between groups. Although APERP (344±76 ms vs 312±61 ms; P<.001) and SPPCL (394±123 ms vs 317±82 ms; P<.001) were longer in nonpersistent vs persistent preexcitation, there was no difference in SPERRI at EPS (331±71 ms vs 316±73 ms; P=.15). Nonpersistent preexcitation was associated with fewer high-risk APs (13% vs 23%; P<.001) than persistent preexcitation. Of 61 patients with SCA or RC-AF, 6 (10%) had nonpersistent preexcitation (3 SCA, 3 RC-AF). CONCLUSION: Nonpersistent preexcitation was associated with fewer high-risk APs, though it did not exclude the risk of SCA or RC-AF in children with WPW.


Assuntos
Morte Súbita Cardíaca/etiologia , Eletrocardiografia Ambulatorial/métodos , Sistema de Condução Cardíaco/fisiopatologia , Medição de Risco/métodos , Síndrome de Wolff-Parkinson-White/fisiopatologia , Adolescente , Morte Súbita Cardíaca/epidemiologia , Teste de Esforço , Feminino , Seguimentos , Saúde Global , Humanos , Incidência , Masculino , Estudos Retrospectivos , Taxa de Sobrevida/tendências , Síndrome de Wolff-Parkinson-White/complicações
9.
Ann Thorac Surg ; 107(1): 165-171, 2019 01.
Artigo em Inglês | MEDLINE | ID: mdl-30071234

RESUMO

BACKGROUND: Historically, steroids and endomyocardial biopsies have, respectively, been part of standard immunosuppression for preventing cardiac transplant rejection and monitoring for rejection. However, these treatments come with numerous adverse effects. Some transplant programs have questioned whether the risks and costs outweigh the benefits or whether they may interfere with patient outcomes. METHODS: Pediatric cardiac transplantations over 15 years (n = 49) were examined in a single-center retrospective study. Two groups of patients were formed: group 1 received induction steroids and underwent routine protocol biopsy (n = 18), and group 2 neither received steroids nor underwent routine biopsy (n = 13). RESULTS: The 1-year survival rate was similar between the two approaches: group 1 survival was 94% and group 2 survival was 92%. However, differences between the two groups were observed for comorbidities. Group 1 had 11 patients that exhibited rejection, and group 2 had only 1 patient (p = 0.003). Group 2 had fewer cases of posttransplant hypertension (p = 0.001) and insulin dependence (p = 0.02). CONCLUSIONS: This study suggests a less-invasive posttransplant approach that avoids biopsies and steroids was safely implemented in this single center. Both groups had similar survival. However, group 2 had statistically significant less posttransplant rejection, hypertension, and diabetes. Overall, this study shows no increased risk associated with steroid and biopsy avoidance in posttransplant patients, but with some clear benefits.


Assuntos
Gerenciamento Clínico , Glucocorticoides/uso terapêutico , Rejeição de Enxerto/prevenção & controle , Transplante de Coração , Terapia de Imunossupressão/métodos , Imunossupressores/uso terapêutico , Cuidados Pós-Operatórios/métodos , Biópsia , Criança , Pré-Escolar , Feminino , Seguimentos , Rejeição de Enxerto/diagnóstico , Sobrevivência de Enxerto , Humanos , Lactente , Masculino , Miocárdio/patologia , Prognóstico , Estudos Retrospectivos
10.
Pacing Clin Electrophysiol ; 41(11): 1428-1434, 2018 11.
Artigo em Inglês | MEDLINE | ID: mdl-30151836

RESUMO

BACKGROUND: Patients with congenital heart disease require multiple procedures over their lifetime. These procedures increase cost and time commitment. Previous studies in the field of medicine have shown that combining procedures is an effective method to reduce cost and time. There has been no such study to evaluate the cost and efficiency of combining pediatric cardiac procedures. OBJECTIVE: The objective of this study was to compare the cost and time commitment of combined cardiac catheterization (cath) and electrophysiology (EP) outpatient procedures against separate cath and EP procedure. METHODS: Outpatient combination procedures performed in the pediatric cardiac cath lab from 2013 to 2016 were matched to a control population of two or three similar single outpatient procedures from 2009 to 2016 for patients of similar age and cardiac anatomy. Procedure duration, recovery duration, length of stay, equipment charges, physician charges, all other hospital charges, and total admission charges were analyzed. The two groups were compared using an unpaired t-test. RESULTS: A total of 92 subjects, 32 study subjects and 60 control subjects, were included in this study. Study group procedures had a significantly shorter recovery duration (P = 0.04) and length of stay (P = 0.01). Study group procedure duration trended shorter on average but statistically insignificant (P = 0.20). The total median savings for patients undergoing combined procedures in the study group was $13,181 (interquartile range $423.8-$26710). CONCLUSIONS: Combining cath and EP outpatient procedures reduces the time commitment and provides some economic advantage.


Assuntos
Assistência Ambulatorial/economia , Cateterismo Cardíaco/economia , Técnicas Eletrofisiológicas Cardíacas/economia , Cardiopatias Congênitas/terapia , Adolescente , Adulto , Estudos de Casos e Controles , Terapia Combinada , Custos e Análise de Custo , Feminino , Humanos , Tempo de Internação/estatística & dados numéricos , Masculino , Fatores de Tempo , Resultado do Tratamento
11.
JACC Clin Electrophysiol ; 4(4): 433-444, 2018 04.
Artigo em Inglês | MEDLINE | ID: mdl-30067481

RESUMO

OBJECTIVES: This study sought to characterize risk in children with Wolff-Parkinson-White (WPW) syndrome by comparing those who had experienced a life-threatening event (LTE) with a control population. BACKGROUND: Children with WPW syndrome are at risk of sudden death. METHODS: This retrospective multicenter pediatric study identified 912 subjects ≤21 years of age with WPW syndrome, using electrophysiology (EPS) studies. Case subjects had a history of LTE: sudden death, aborted sudden death, or atrial fibrillation (shortest pre-excited RR interval in atrial fibrillation [SPERRI] of ≤250 ms or with hemodynamic compromise); whereas subjects did not. We compared clinical and EPS data between cases and subjects. RESULTS: Case subjects (n = 96) were older and less likely than subjects (n = 816) to have symptoms or documented tachycardia. Mean age at LTE was 14.1 ± 3.9 years of age. The LTE was the sentinel symptom in 65%, consisting of rapidly conducted pre-excited atrial fibrillation (49%), aborted sudden death (45%), and sudden death (6%). Three risk components were considered at EPS: SPERRI, accessory pathway effective refractory period (APERP), and shortest paced cycle length with pre-excitation during atrial pacing (SPPCL), and all were shorter in cases than in control subjects. In multivariate analysis, risk factors for LTE included male sex, Ebstein malformation, rapid anterograde conduction (APERP, SPERRI, or SPPCL ≤250 ms), multiple pathways, and inducible atrial fibrillation. Of case subjects, 60 of 86 (69%) had ≥2 EPS risk stratification components performed; 22 of 60 (37%) did not have EPS-determined high-risk characteristics, and 15 of 60 (25%) had neither concerning pathway characteristics nor inducible atrioventricular reciprocating tachycardia. CONCLUSIONS: Young patients may experience LTE from WPW syndrome without prior symptoms or markers of high-risk on EPS.


Assuntos
Fibrilação Atrial , Morte Súbita , Síndrome de Wolff-Parkinson-White , Adolescente , Fibrilação Atrial/epidemiologia , Fibrilação Atrial/etiologia , Criança , Morte Súbita/epidemiologia , Morte Súbita/etiologia , Feminino , Humanos , Masculino , Estudos Retrospectivos , Fatores de Risco , Síndrome de Wolff-Parkinson-White/complicações , Síndrome de Wolff-Parkinson-White/epidemiologia , Síndrome de Wolff-Parkinson-White/mortalidade
12.
Heart Rhythm ; 15(5): 703-707, 2018 05.
Artigo em Inglês | MEDLINE | ID: mdl-29309839

RESUMO

BACKGROUND: Subcutaneous implantable cardioverter-defibrillator (SICD) shows promise for select patients at risk of sudden cardiac death. However, patients need to pass an electrocardiographic (ECG) screening (ECG-S) test before they can receive an SICD. Predictors of ECG-S failure in children are unclear. OBJECTIVE: The purpose of this study was to identify the incidence and predictive factors for failure of ECG-S in children. METHODS: Patients 18 years and younger with a preexisting ICD underwent ECG-S for SICD. ECG and demographic data were analyzed for factors predictive of failure. RESULTS: Seventy-three patients (mean age 14.2 ± 3.3 years; range 5-18 years) with hypertrophic cardiomyopathy (n = 24, 33%), long QT syndrome (n =18, 25%), other inherited arrhythmia syndromes (n = 20, 27%), congenital heart disease (n = 9, 12%), and miscellaneous conditions (n = 2) with an existing transvenous ICD underwent prospective ECG-S. Nineteen (26%) failed ECG-S. Failed patients had a longer corrected QT (QTc) interval (457 ms vs 425 ms; P = .03), a longer QRS duration (120 ms vs 98 ms; P = .04), and a lower ratio of R-wave to T-wave amplitudes (R:T ratio) in lead aVF (4 vs 5; P = .001). Multivariable logistic regression identified QTc interval (odds ratio [OR] 4.31; P = .04), QRS duration (OR 4.93; P = .03), R:T ratio in lead aVF (OR 3.13; P = .08) as predictors of failure. A risk score with 1 point each for QTc interval >440 ms, QRS duration >120 ms, and R:T ratio <6.5 in lead aVF was associated with probability of failure of 15.4% (1 point), 47.4% (2 points), and 88.6% (3 points), respectively. CONCLUSION: ECG-S failure for SICD occurred in 26% of children, which is higher than the reported incidence in adults. Factors predicting ECG-S failure included longer QTc interval, longer QRS duration, and lower R:T ratio in lead aVF.


Assuntos
Cardiomiopatia Hipertrófica/terapia , Morte Súbita Cardíaca/prevenção & controle , Desfibriladores Implantáveis , Eletrocardiografia/métodos , Sistema de Condução Cardíaco/fisiopatologia , Cardiopatias Congênitas/terapia , Síndrome do QT Longo/terapia , Adolescente , Colúmbia Britânica/epidemiologia , Cardiomiopatia Hipertrófica/diagnóstico , Cardiomiopatia Hipertrófica/fisiopatologia , Criança , Pré-Escolar , Morte Súbita Cardíaca/epidemiologia , Feminino , Seguimentos , Alemanha/epidemiologia , Cardiopatias Congênitas/diagnóstico , Cardiopatias Congênitas/fisiopatologia , Humanos , Incidência , Síndrome do QT Longo/diagnóstico , Síndrome do QT Longo/fisiopatologia , Masculino , Seleção de Pacientes , Valor Preditivo dos Testes , Estudos Prospectivos , Fatores de Risco , Taxa de Sobrevida/tendências , Resultado do Tratamento , Estados Unidos/epidemiologia
13.
J Innov Card Rhythm Manag ; 9(3): 3079-3083, 2018 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32477803

RESUMO

Among the congenital heart disease (CHD) population, intra-atrial reentrant tachycardia (IART) is a common sequela resulting from anatomical anomalies and surgical scars that significantly increases morbidity and mortality. Atrial antitachycardia pacing (ATP) delivered by atrial antitachycardia devices (ATDs) has been used to treat IART in the CHD population. However, there remains limited data on the safety and efficacy of ATP, as well as on comparisons of its effects amongst different CHD subtypes. The purpose of the current study is to describe the clinical history and ATP efficacy in three patients with unique forms of complex CHD. During this study, a single-center review of three patients with ATDs was performed. One patient with each of the following CHD anomalies was selected for inclusion: systemic left ventricle, systemic right ventricle, and single ventricle. Data collected included ATP success rates, medications in use, direct current (DC) cardioversions, and any complications related to the ATDs. Study findings revealed the patient with a systemic left ventricle had an ATD implanted for approximately 9.5 years, with 695 of 956 (73%) episodes successfully converted. Unsuccessfully treated episodes were generally asymptomatic and self-terminating in this patient. The patient with a systemic right ventricle had an ATD implanted for approximately 16 years, with 333 of 348 (96%) episodes being successfully converted. The patient with a single ventricle had an ATD implanted for approximately 12.5 years, with 404 of 416 (97%) episodes successfully converted. The patients with biventricular physiology were able to forgo DC cardioversion after receiving their ATDs. However, due to medical noncompliance as well as multiple episodes of IART, which presented with 1:1 conduction or low rates, the single-ventricle patient still required DC cardioversions post-ATD implantation. In conclusion, this study's findings demonstrate that, while ATP can be effective in a wide variety of CHDs, experiences can vary based on individual arrhythmia substrates, cardiac anatomy, and medical compliance. Additionally, challenges remain in IART detection in patients with especially complex CHD anatomies.

14.
Heart Rhythm ; 15(4): 543-547, 2018 04.
Artigo em Inglês | MEDLINE | ID: mdl-29246827

RESUMO

BACKGROUND: Intra-atrial reentrant tachycardia (IART) is a common sequela in the congenital heart disease (CHD) population, and it significantly increases morbidity and mortality. Atrial antitachycardia devices (ATDs) capable of atrial antitachycardia pacing (ATP) therapy have been used to manage IART in the CHD population, but there are limited data on their safety and efficacy. OBJECTIVES: To determine whether ATD implantation was associated with reduced direct current (DC) cardioversions and to compare ATP success between different CHD diagnoses and ATP programs. METHODS: A single-center retrospective chart review was performed on CHD patients with ATDs. Demographic data were collected in addition to the number of DC cardioversions required before and after ATD implantation; data on ATP efficacy and the specific ATP program utilized; and adverse events related to ATD implantation or subsequent ATP treatments. RESULTS: ATD implantation in 91 CHD patients was associated with a significant reduction in DC cardioversions (P < .01). Overall, 72% of IART episodes were successfully terminated by ATP. Patients with levo-transposition of the great arteries experienced lower rates of ATP success than the remainder of the cohort (P < .01). There was no evidence of degeneration to ventricular arrhythmia or death directly attributed to ATP. CONCLUSION: ATD implantation was associated with reduced DC cardioversion burden. Patients with levo-transposition of the great arteries may experience lower ATP efficacy than patients with other CHDs; however, a larger patient population is required to better determine subgroup efficacy. These results support the safety and efficacy of ATP in the CHD population.


Assuntos
Estimulação Cardíaca Artificial/métodos , Átrios do Coração/fisiopatologia , Cardiopatias Congênitas/complicações , Taquicardia Supraventricular/terapia , Adolescente , Adulto , Criança , Feminino , Seguimentos , Cardiopatias Congênitas/mortalidade , Humanos , Incidência , Iowa/epidemiologia , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Taxa de Sobrevida/tendências , Taquicardia Supraventricular/epidemiologia , Taquicardia Supraventricular/etiologia , Resultado do Tratamento , Adulto Jovem
15.
J Innov Card Rhythm Manag ; 8(9): 2836-2842, 2017 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-32494469

RESUMO

Voltage mapping has been used previously for slow-pathway localization for atrioventricular nodal reentrant tachycardia (AVNRT) ablation. However, propagation mapping may be a technique to further improve the localization of the slow pathway. This retrospective study aimed to evaluate the relationship of the propagation map to both the voltage mapping and successful site of ablation in patients who underwent ablation for AVNRT. All patients ≤20 years of age who underwent voltage mapping for AVNRT were included in this study. Patients were excluded if they had congenital heart disease or inadequate voltage point density within the triangle of Koch (TK). During the study, a propagation map was evaluated from the prior voltage map, marking a "wave collision" at the site of atrial wave convergence. Patient and procedural information, the location of the wave collision, the site of successful ablation, and the appearance of the voltage map were evaluated. Ultimately, 39 patients aged from four years of age to 20 years of age were evaluated. Success was achieved in 100% of patients, with a recurrence rate of 2.8% and no long-term complications observed. The average procedure time was 127 min. Follow-up length averaged seven months post operation. Low-voltage areas, and a wave collision, were present in all patients. This wave collision was typically located within the TK. The median number of ablations required for successful outcome was two. The successful ablation lesion was typically located over a low-voltage area within 4 mm of the wave collision within the TK. In conclusion, we found in this retrospective evaluation that propagation mapping resulted in a wave collision within the TK, and that the successful ablation site in the majority of patients was near a low-voltage area within 4 mm, typically superiorly, to the wave collision within the TK.

16.
Pancreatology ; 15(6): 667-73, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26412296

RESUMO

BACKGROUND: The efficacy of FOLFIRINOX for metastatic pancreatic cancer has led to its use in patients with earlier stages of disease. This study retrospectively analyzed a cohort of patients with locally-advanced pancreatic cancer (LAPC) treated with FOLFIRINOX. METHODS: Between 2008 and 2013, 51 treatment-naïve patients with LAPC at a single institution received first-line FOLFIRINOX with neoadjuvant intent, at the full dose as described in the PRODIGE 4/ACCORD 11 study. Combined chemoradiation was administered for those who remained unresectable after maximum response to chemotherapy. The primary outcome measure was overall survival (OS), and secondary outcomes were progression-free survival (PFS) and margin-negative (R0) resection rate, and toxicity profile. RESULTS: A total of 429 cycles of FOLFIRINOX were given with a median of 8 cycles (range 2-29) per patient; 66% of cycles were full dose. After chemotherapy, 27 (53%) received chemoradiation. The median OS was 35.4 months (95% CI 25.8-45). Ten (4 borderline resectable and 6 unresectable) patients had successful R0 resections; those who had R0 resections had a significantly longer survival than those who did not (3-year OS rate 67% versus 21%, log rank p = 0.042). Increasing number of full-dose cycles was significantly associated with increased survival. The toxicity profile was similar to previous reports of this regimen. CONCLUSIONS: FOLFIRINOX is feasible as neoadjuvant therapy for LAPC. Although the R0 resection rate was only 20%, the median OS of almost 3 years appears promising. Dose intensity and duration were associated with increased survival in this study, arguing against dose attenuated versions of this regimen.


Assuntos
Adenocarcinoma/tratamento farmacológico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias Pancreáticas/tratamento farmacológico , Adulto , Idoso , Quimioterapia Adjuvante , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos
17.
BMC Cancer ; 12: 199, 2012 May 29.
Artigo em Inglês | MEDLINE | ID: mdl-22642850

RESUMO

BACKGROUND: 5-fluorouracil, leucovorin, irinotecan and oxaliplatin (FOLFIRINOX) is superior to gemcitabine in patients with metastatic pancreatic cancer who have a good performance status. We investigated this combination as neoadjuvant therapy for locally advanced pancreatic cancer (LAPC). METHODS: In this retrospective series, we included patients with unresectable LAPC who received neoadjuvant FOLFIRINOX with growth factor support. The primary analysis endpoint was R0 resection rate. RESULTS: Eighteen treatment-naïve patients with unresectable or borderline resectable LAPC were treated with neoadjuvant FOLFIRINOX. The median age was 57.5 years and all had ECOG PS of 0 or 1. Eleven (61 %) had tumors in the head of the pancreas and 9 (50 %) had biliary stents placed prior to chemotherapy. A total of 146 cycles were administered with a median of 8 cycles (range 3-17) per patient. At maximum response or tolerability, 7 (39 %) were converted to resectability by radiological criteria; 5 had R0 resections, 1 had an R1 resection, and 1 had unresectable disease. Among the 11 patients who remained unresectable after FOLFIRINOX, 3 went on to have R0 resections after combined chemoradiotherapy, giving an overall R0 resection rate of 44 % (95 % CI 22-69 %). After a median follow-up of 13.4 months, the 1-year progression-free survival was 83 % (95 % CI 59-96 %) and the 1-year overall survival was 100 % (95 % CI 85-100 %). Grade 3/4 chemotherapy-related toxicities were neutropenia (22 %), neutropenic fever (17 %), thrombocytopenia (11 %), fatigue (11 %), and diarrhea (11 %). Common grade 1/2 toxicities were neutropenia (33 %), anemia (72 %), thrombocytopenia (44 %), fatigue (78 %), nausea (50 %), diarrhea (33 %) and neuropathy (33 %). CONCLUSIONS: FOLFIRINOX followed by chemoradiotherapy is feasible as neoadjuvant therapy in patients with unresectable LAPC. The R0 resection rate of 44 % in this population is promising. Further studies are warranted.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Camptotecina/análogos & derivados , Fluoruracila/uso terapêutico , Leucovorina/uso terapêutico , Compostos Organoplatínicos/uso terapêutico , Neoplasias Pancreáticas/tratamento farmacológico , Neoplasias Pancreáticas/patologia , Adulto , Idoso , Algoritmos , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Camptotecina/efeitos adversos , Camptotecina/uso terapêutico , Feminino , Fluoruracila/efeitos adversos , Humanos , Irinotecano , Leucovorina/efeitos adversos , Masculino , Pessoa de Meia-Idade , Terapia Neoadjuvante , Estadiamento de Neoplasias , Compostos Organoplatínicos/efeitos adversos , Oxaliplatina , Neoplasias Pancreáticas/mortalidade , Estudos Retrospectivos , Resultado do Tratamento
18.
J Cancer Educ ; 25(4): 602-8, 2010 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-20232188

RESUMO

Previous research has not examined barriers to Pap test screening among Haitian immigrant women through their own discourse. Community Health Workers conducted in-depth interviews with Haitian women in Little Haiti, Miami. We used a grounded theory approach to analyze data from the in-depth interviews. Emergent themes coalesced into three core categories of screening barriers: structural, psychosocial, and sociocultural. We developed a model of screening barriers to depict the themes within each core category. Screening barriers must be examined and understood from the social contexts in which they are produced in order to create meaningful interventions.


Assuntos
Acessibilidade aos Serviços de Saúde , Mamografia/estatística & dados numéricos , Programas de Rastreamento/estatística & dados numéricos , Neoplasias do Colo do Útero/etnologia , Neoplasias do Colo do Útero/prevenção & controle , Adulto , Emigrantes e Imigrantes , Feminino , Florida/epidemiologia , Haiti/etnologia , Humanos , Pessoa de Meia-Idade , Neoplasias do Colo do Útero/diagnóstico , Esfregaço Vaginal
19.
J Immigr Minor Health ; 12(4): 520-6, 2010 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-20091231

RESUMO

Previous research has not examined barriers to mammography screening among Haitian immigrant women through their own discourse. Community Health Workers conducted in-depth interviews with Haitian women in Little Haiti, Miami. We used a grounded theory approach to analyze data from the in-depth interviews. Emergent themes coalesced into three core categories of screening barriers: Structural, Psychosocial, and Socio-Cultural. We developed a model of screening barriers to depict the themes within each core category. Screening barriers must be examined and understood from the social contexts in which they are produced in order to create meaningful interventions.


Assuntos
Neoplasias da Mama/prevenção & controle , Acessibilidade aos Serviços de Saúde , Programas de Rastreamento/estatística & dados numéricos , Adulto , Neoplasias da Mama/diagnóstico , Neoplasias da Mama/etnologia , Emigrantes e Imigrantes , Feminino , Florida , Haiti/etnologia , Humanos , Entrevistas como Assunto , Mamografia/estatística & dados numéricos , Pessoa de Meia-Idade
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