RESUMO
Con el advenimiento de nuevas técnicas quirúrgicas y medicaciones inmunosupresoras la sobrevida de los niños trasplantados mejoró, llegando a la adultez. La continuidad de su tratamiento requiere un proceso planificado que permita su tránsito a un sistema de salud orientado al adulto. El objeto de este trabajo es mostrar la transición a centros de adultos en una cohorte de pacientes trasplantados renales en el Hospital Garrahan, describir sus características clínicas y demográficas, su evolución, y oportunidades de mejora implementadas. Debido a cambios médicos y su abordaje desde la interdisciplina, se dividió a la población en tres periodos: era 1 (1988-1999), era 2 (2000-2009), y era 3 (2010- 2023). En la era 1, 179 adolescentes continuaron su atención médica en un centro de adultos, 212 en la era 2 y 201 en la era 3. En la era 1 el seguimiento estaba coordinado por el nefrólogo de cabecera y eran consultados los servicios de Urología, Servicio Social y Salud Mental. En la era 2, se fortaleció el trabajo en interdisciplina y aún más a partir del 2011. Surgieron centros de trasplante de adultos que recibían adolescentes y médicos dedicados a ellos en forma preferencial. En la actualidad la transición comienza a los 12 años y progresa hasta los 18. El modelo implementado es la transición directa, entre el nefrólogo pediatra y el de adultos, con varias consultas secuenciales en ambos centros. Si bien la sobrevida del paciente e injerto mejoraron, el rechazo, asociado a no adherencia, es una asignatura por mejorar (AU)
With the advent of new surgical techniques and immunosuppressive medications, the survival of transplanted children has improved, allowing them to reach adulthood. The continuity of their treatment requires a planned process that facilitates their transition to an adult-oriented healthcare system. The aim of this study was to examine the transition to adult centers in a cohort of renal transplant patients at Garrahan Hospital, describing their clinical and demographic characteristics, their evolution, and the improvement opportunities implemented. Based on medical changes and the interdisciplinary approach, the population was divided into three periods: era 1 (1988- 1999), era 2 (2000-2009), and era 3 (2010-2023). In era 1, 179 adolescents continued their medical care in an adult center, 212 in era 2, and 201 in era 3. In era 1, follow-up was coordinated by the attending nephrologist with consultations from Urology, Social Services, and Mental Health Services. In era 2, interdisciplinary work was strengthened, and even more so since 2011. Adult transplant centers were created to receive adolescents with physicians dedicated to their care on a preferential basis. Currently, the transition begins at 12 years of age and progresses up to 18. The implemented model involves direct transition between the pediatric nephrologist and the adult nephrologist, with several sequential consultations in both centers. Although patient and graft survival have improved, rejection associated with non-adherence remains an area for improvement
Assuntos
Humanos , Criança , Adolescente , Equipe de Assistência ao Paciente , Transplante de Rim , Resultado do Tratamento , Transição para Assistência do Adulto/organização & administração , Cuidado Transicional , Cooperação e Adesão ao Tratamento/psicologia , Rejeição de Enxerto/prevenção & controle , Sobrevivência de Enxerto , Estudos Retrospectivos , Estudo ObservacionalRESUMO
BACKGROUND: SARS-CoV-2 infection has caused a global pandemic. Many of the medications identified to treat COVID-19 could be connected with QTc prolongation and its consequences. METHODS: Non-ICU hospitalized patients of the three centres involved in the study from the 19th of March to the 1st of May were included in this retrospective multicentre study. Relevant clinical data were digitally collected. The primary outcome was the incidence of QTc prolongation ≥ 500 ms, the main secondary outcomes were the Tisdale score ability to predict QTc prolongation and the incidence of ventricular arrhythmias and sudden deaths. RESULTS: 196 patients were analysed. 20 patients (10.2%) reached a QTc ≥ 500 ms. Patients with QTc ≥ 500 ms were significantly older (66.7 ± 14.65 vs 76.6 ± 8.77 years p: 0.004), with higher Tisdale score (low 56 (31.8%) vs 0; intermediate 95 (54.0%) vs 14 (70.0%); high 25 (14.2%) vs 6 (30.0%); p: 0.007) and with higher prognostic lab values (d-dimer 1819 ± 2815 vs 11486 ± 38554 ng/ml p: 0.010; BNP 212.5 ± 288.4 vs 951.3 ± 816.7 pg/ml p < 0.001; procalcitonin 0.27 ± 0.74 vs 1.33 ± 4.04 ng/ml p: 0.003). After a multivariate analysis the Tisdale score was able to predict a QTc prolongation ≥ 500 ms (OR 1,358 95% CI 1,076-1,714p: 0,010). 27 patients died because of COVID-19 (13.7%), none experienced ventricular arrhythmias, and 2 (1.02%) patients with concomitant cardiovascular condition died of sudden death. CONCLUSIONS: In our population, a QTc prolongation ≥ 500 ms was observed in a minority of patients, no suspected fatal arrhythmias have been observed. Tisdale score can help in predicting QTc prolongation.
RESUMO
A laboratory-scale device to obtain forming-limit diagram data was designed to utilize the Marciniak and Kuczynski (MK) sample geometry. The design uses a high-resolution photographic camera, automatic trigger, and light-emitting diode (LED) lighting to record the time history of deformation calculated with the digital-image correlation technique. Because the testing device was miniaturized, it was possible to halt the forming experiments at intermediate strains and recrystallize the MK carrier blank. This permits large formability strains to be obtained without cracks developing at the carrier blank's central hole, an advantage over full-size specimens and conventional testing rates. A number of initial experiments were performed on a zinc alloy sheet (Zn-Cu-Ti) over the entire forming-limit range (-0.5 ≤ ε2/ε1 ≤ 1), and the strain fields reduced employing the Bragard criterion to obtain limit strains. These results are compared favorably to previous data of this material obtained with a hemispherical, Nakazima, punch and a circle-grid pattern.
Assuntos
Cateterismo Cardíaco/instrumentação , Implante de Prótese de Valva Cardíaca/instrumentação , Próteses Valvulares Cardíacas , Anuloplastia da Valva Mitral , Insuficiência da Valva Mitral/cirurgia , Valva Mitral/cirurgia , Cateterismo Cardíaco/efeitos adversos , Tomada de Decisão Clínica , Implante de Prótese de Valva Cardíaca/efeitos adversos , Humanos , Valva Mitral/diagnóstico por imagem , Valva Mitral/fisiopatologia , Anuloplastia da Valva Mitral/efeitos adversos , Insuficiência da Valva Mitral/diagnóstico por imagem , Insuficiência da Valva Mitral/fisiopatologia , Seleção de Pacientes , Desenho de Prótese , Recuperação de Função Fisiológica , Fatores de Risco , Resultado do TratamentoRESUMO
OBJECTIVES: Mechanical complications of median sternotomy may cause significant morbidity and mortality in cardiac surgical patients. This study was aimed at assessing the role of Posthorax support vest (Epple, Inc., Vienna, Austria) in the prevention of sternal complications and the improvement of anatomical healing in patients at high risk for mechanical sternal dehiscence after cardiac surgery by mean of median sternotomy. METHODS: A prospective, randomized, study was performed and 310 patients with predisposing factors for sternal dehiscence after sternotomy for cardiac surgery were included. The patients were divided into two groups: patients who received the Posthorax support vest after surgery, and patients who did not. Primary variables assessed included the incidence of mechanical sternal complications, the quality of sternal healing, the rate of re-operation, the duration of hospitalization, rate and duration of hospital, re-admission for sternal complications. Secondary variables assessed were the post-operative pain, the number of requests for supplemental analgesia and the quality of life measured by means of the EQ-5D format. RESULTS: Patients using vest demonstrated a lower incidence of mechanical sternal complications, a better anatomical sternum healing, lower hospital stay, no re-operations for sternal dehiscence before discharge and lower re-admissions for mechanical sternal complication. In addition, patients using a vest reported a better quality of life with better freedom from limitations in mobility, self-care, and pain. CONCLUSIONS: Our findings demonstrate that the use of the Posthorax vest reduces post-sternotomy mechanical complications and improves the healing of the sternotomy, the clinical course, and the post-operative quality of life.
RESUMO
Chronic cerebrospinal venous insufficiency (CCSVI) is a vascular condition characterized by morphologic alterations involving efferent cerebral vascular paths. CCSVI has been implicated as a contributing factor to multiple sclerosis (MS) but this theory is highly controversial. We report 3 cases of CCSVI patients with MS who had undergone internal jugular veins (IJVs) angioplasty to restore vessels patency. All patients reported significant symptomatic improvement after angioplasty until symptoms recurred after restenosis of the treated IJVs. Surgical IJVs reconstruction was performed. Patients' symptoms gradually improved and the benefits were maintained at the 1-year follow-up.
Assuntos
Transtornos Cerebrovasculares/cirurgia , Veias Jugulares/cirurgia , Esclerose Múltipla Recidivante-Remitente/complicações , Veia Safena/transplante , Procedimentos Cirúrgicos Vasculares/métodos , Insuficiência Venosa/cirurgia , Adulto , Transtornos Cerebrovasculares/complicações , Doença Crônica , Humanos , Masculino , Grau de Desobstrução Vascular , Insuficiência Venosa/complicaçõesRESUMO
Congenital clefts of the mitral valve without an associated atrioventricular canal defect are rare, and they may cause mitral insufficiency that requires surgical correction. Repair is typically by direct suture; however, if the cleft is especially wide, the use of this technique may distort the valve leaflet and cause poor coaptation with valvular insufficiency.Herein, we present the case of a 39-year-old woman who had severe mitral valve insufficiency secondary to a wide isolated cleft of the anterior mitral leaflet. The valve was reconstructed with an autologous pericardial patch supported by polytetrafluoroethylene neochordae and an implanted annuloplasty ring. Echocardiographic examination 1 year postoperatively showed excellent competence of the mitral valve and good coaptation of the leaflets. To our knowledge, this is the 1st report that describes the use of artificial neochordae to support an autologous pericardial patch in the repair of a cleft in the anterior mitral valve leaflet.
Assuntos
Cardiopatias Congênitas/cirurgia , Implante de Prótese de Valva Cardíaca/instrumentação , Próteses Valvulares Cardíacas , Anuloplastia da Valva Mitral/instrumentação , Insuficiência da Valva Mitral/cirurgia , Valva Mitral/cirurgia , Pericárdio/transplante , Adulto , Ecocardiografia Doppler em Cores , Ecocardiografia Tridimensional , Ecocardiografia Transesofagiana , Feminino , Cardiopatias Congênitas/complicações , Cardiopatias Congênitas/diagnóstico por imagem , Humanos , Valva Mitral/anormalidades , Valva Mitral/diagnóstico por imagem , Insuficiência da Valva Mitral/diagnóstico por imagem , Insuficiência da Valva Mitral/etiologia , Desenho de Prótese , Índice de Gravidade de Doença , Técnicas de Sutura , Transplante Autólogo , Resultado do TratamentoRESUMO
La Oficina de Comunicación a distancia (OCD) es una estructura creada en 1997 en el Hospital de Pediatría Juan P. Garrahan, con el objetivo de responder consultas a distancia y facilitar el seguimiento de pacientes, con la intención de evitar los traslados innecesarios. Ha dado respuesta a más de 25000 consultas. Actualmente, en el marco del Programa de Comunicación a Distancia (PCD), funcionan 88 OCD distribuidas en 12 de las 23 provincias argentinas. Se presentan resultados sobre una muestra de 148 consultas realizadas al Hospital Garrahan desde 6 provincias, que participaron de un estudio de tipo descriptivo, retrospectivo, cuali-cuantitativo. Éste permitió formular nuevas formas de registro de la tarea y elaborar indicadores cualicuantitativos para evaluar el PCD: consultas, motivo de consulta, tipo de paciente consultado, necesidad de la consulta, duración de la enfermedad al momento de la consulta, derivación sugerida, tiempo de respuesta. Se analizó el número de consultas y las sugerencias de derivación, mostrando las primeras un progresivo y significativo incremento desde la implementación del PCD. Con relación a los motivos de consulta, 84% correspondió a definición de diagnóstico y tratamiento, 16% a motivos de seguimiento e intercurrencias. 62% presentaba patologías crónicas. 95% de los pacientes fueron definidos como complejos. 79% correspondió a consultas definidas como imprescindibles. La derivación fue sugerida en el 54% de las consultas. La mediana del tiempo de respuesta fue de 48 horas. El bajo porcentaje atribuido a "motivos de seguimiento" evidencia la necesidad de profundizar estrategias para promoverlo. El PCD oficializó una modalidad de comunicación que canaliza prácticas anteriormente realizadas a través de vías informales, resignificando la gestión como acto asistencial. Contribuyó a la implementación de metodologías de evaluación conjunta de los indicadores considerados, que contemplan el contexto de la población con la que se trabaja (AU)
In 1997, the Outreach Communication Office (OCO) was created at the Pediatric Hospital Juan P. Garrahan with the aim of responding to consultations from remote places and facilitating follow-up of patients while avoiding unnecessary patient transportations. More than 25,000 consultations have been responded. Currently, within the framework of the Program of Outreach Communication (POC), 88 OCO's are operating distributed over 12 of the 23 Argentine provinces. Here we present the results of a sample of 148 consultations made at the Garrahan Hospital from six provinces that participated in a descriptive, retrospective, qualitative and quantitative study. The study allowed formulation of new methods of task registration and the development of qualitative and quantitative indicators to evaluate the POC: consultations, reason for consultation, type of patient, urgency of the consultation, disease duration until the moment of consultation, suggested referral, and time to response. The number of consultations and suggestions for referral were analyzed showing a progressive and significant increase of the former since the implementation of the POC. Of the reasons for consultation, 84% was related to definition of diagnosis and treatment, 16% to follow-up and intercurrencies. Of all patients, 62% had chronic diseases and 95% were considered complex patients. Of the consultations, 79% were defined as essential and 54% of the patients were referred to specialists. Mean time to response was 48 hours. The low percentage of consultations for "reasons of follow-up" reveals the need to develop strategies to encourage this modality. The POC has officialized a means of communication channeling practices that previously were informal giving a new meaning to the concept management in health care. The POC has contributed to the implementation of methodologies for the assessment of global markers taking into account the context of the population in question (AU)
Assuntos
Humanos , Recém-Nascido , Lactente , Pré-Escolar , Criança , Adolescente , Encaminhamento e Consulta , Telemedicina , Consulta Remota/organização & administração , Consulta Remota/estatística & dados numéricos , Redes Comunitárias/organização & administração , Estudos RetrospectivosRESUMO
PURPOSE: This study aimed to evaluate the diagnostic accuracy of stress electrocardiogram (ECG) and computed tomography coronary angiography (CTCA) for the detection of significant coronary artery stenosis (> or =50%) in the real world using conventional CA as the reference standard. MATERIALS AND METHODS: A total of 236 consecutive patients (159 men, 77 women; mean age 62.8+/-10.2 years) at moderate risk and with suspected coronary artery disease (CAD) were enrolled in the study and underwent stress ECG, CTCA and CA. The CTCA scan was performed after i.v. administration of a 100-ml bolus of iodinated contrast material. The stress ECG and CTCA reports were used to evaluate diagnostic accuracy compared with CA in the detection of significant stenosis > or =50%. RESULTS: We excluded 16 patients from the analysis because of the nondiagnostic quality of stress ECG and/or CTCA. The prevalence of disease demonstrated at CA was 62% (n=220), 51% in the population with comparable stress ECG and CTCA (n=147) and 84% in the population with equivocal stress ECG (n=73). Stress ECG was classified as equivocal in 73 cases (33.2%), positive in 69 (31.4%) and negative in 78 (35.5%). In the per-patient analysis, the diagnostic accuracy of stress ECG was sensitivity 47%, specificity 53%, positive predictive value (PPV) 51% and negative predictive value (NPV) 49%. On stress ECG, 40 (27.2%) patients were misclassified as negative, and 34 (23.1%) patients with nonsignificant stenosis were overestimated as positive. The diagnostic accuracy of CTCA was sensitivity 96%, specificity 65%, PPV 74% and NPV 94%. CTCA incorrectly classified three (2%) as negative and 25 (17%) as positive. The difference in diagnostic accuracy between stress ECG and CTCA was significant (p<0.01). CONCLUSIONS: CTCA in the real world has significantly higher diagnostic accuracy compared with stress ECG and could be used as a first-line study in patients at moderate risk.
Assuntos
Angiografia Coronária/métodos , Estenose Coronária/diagnóstico , Eletrocardiografia/métodos , Teste de Esforço , Tomografia Computadorizada por Raios X/métodos , Adulto , Idoso , Idoso de 80 Anos ou mais , Distribuição de Qui-Quadrado , Meios de Contraste , Estenose Coronária/diagnóstico por imagem , Estenose Coronária/fisiopatologia , Diagnóstico Diferencial , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Estudos Retrospectivos , Sensibilidade e EspecificidadeRESUMO
Current research indicates that black men who have sex with men (MSM) are disproportionately burdened by depressive distress and anxiety disorders as compared to their white gay and heterosexual counterparts. This study utilizes focus groups to qualitatively explore issues surrounding the mental health status of this population in an attempt to shed light on potential influencing and determinant factors. Twenty-two self-identified black, or multi-racial including black, MSM residing in Atlanta, Georgia participated in two focus groups--11 subjects each, respectively. Categories that emerged from data analysis include: knowledge/experiences, attitudes/beliefs, societal action/behavior, identity development, relationship functionality, and mental health status. Overarching themes for each category were delineated.
Assuntos
Negro ou Afro-Americano/psicologia , Homossexualidade Masculina/psicologia , Adolescente , Adulto , Ansiedade/epidemiologia , Depressão/epidemiologia , Grupos Focais , Georgia/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade , Adulto JovemRESUMO
We report a case-series of seven patients with Tako-Tsubo cardiomyopathy (TTC) and at least one concomitant >or=50% coronary stenosis. Each case involves a female patient who presented symptoms and an electrocardiogram compatible with acute coronary syndrome, mild troponin I elevation, a ventriculogram showing left ventricle (LV) apical or midventricular ballooning (classical or variant TTC), an angiogram showing at least one >or=50% stenosis and a cardiac magnetic resonance showing no myocardial late Gadolinium enhancement. Full recovery of normal LV contractility after the event was required to confirm TTC. Our report presents the case for the opportunity to modify the TTC definition, removing the requirement for absence of coronary stenosis not to exclude patients with bystander coronary lesions, who are probably under diagnosed as per the original TTC definition.
Assuntos
Estenose Coronária/diagnóstico , Cardiomiopatia de Takotsubo/diagnóstico , Idoso , Idoso de 80 Anos ou mais , Estenose Coronária/complicações , Feminino , Humanos , Cardiomiopatia de Takotsubo/complicaçõesRESUMO
BACKGROUND AND AIM: The need to intermittently discontinue the administration of cardioplegia in order to complete the surgical procedure is a major drawback of antegrade warm blood cardioplegia. An ischemic time of 15 minutes is generally considered safe based on empirical observation. The aim of this study was the evaluation of the efficacy and safety of an intermittent warm blood cardioplegia with intervals between administrations prolonged to 25 minutes. METHODS: Ninety-seven patients undergoing primary elective coronary artery revascularization were prospectively randomized into two groups. The first, Intermittent Antegrade Warm Blood Cardioplegia (IAWBC) group, comprising 49 patients, received standard intermittent antegrade warm blood cardioplegia repeated every 15 minutes. The second, Modified Intermittent Antegrade Warm Blood Cardioplegia (M-IAWBC) group, comprising 48 patients, received intermittent antegrade warm blood cardioplegia supplemented with magnesium sulfate (MgSO(4)), delivered in volumes proportional to the ventricular mass and repeated every 25 minutes. The clinical outcomes were evaluated. The levels of creatine kinase-MB (CK-MB) isoenzyme, in addition to the echocardiographic assessment of septal dyskinesia and tricuspid annulus plane systolic excursion (TAPSE), have been used as markers of myocardial damage. RESULTS: There were no statistically significant differences in clinical outcomes, need for inotropes and vasodilators, length of stay in the intensive care unit, and postoperative levels of CK-MB between the two groups. Likewise, postoperative echocardiographic assessment showed no relevant differences. CONCLUSIONS: Administration of warm antegrade cardioplegic solution supplemented with MgSO(4), delivered in volumes proportional to ventricular mass every 25 minutes, provides adequate myocardial protection for coronary artery surgery.
Assuntos
Procedimentos Cirúrgicos Cardiovasculares/métodos , Doença da Artéria Coronariana/cirurgia , Creatina Quinase Forma MB/sangue , Parada Cardíaca Induzida/efeitos adversos , Parada Cardíaca Induzida/métodos , Isquemia Miocárdica/fisiopatologia , Idoso , Biomarcadores/sangue , Temperatura Corporal , Soluções Cardioplégicas , Cardiotônicos/uso terapêutico , Procedimentos Cirúrgicos Cardiovasculares/efeitos adversos , Doença da Artéria Coronariana/diagnóstico por imagem , Feminino , Humanos , Tempo de Internação , Masculino , Revascularização Miocárdica , Estudos Prospectivos , Fatores de Tempo , Ultrassonografia , Vasodilatadores/uso terapêuticoRESUMO
From March 2004 through October 2007, we prospectively evaluated the benefits of cardiac resynchronization therapy as an adjunct to conventional procedures in patients who were undergoing surgery for heart failure.Twenty severely symptomatic patients (14 men and 6 women, with a mean age of 70 +/- 8 years) who displayed advanced cardiomyopathy, QRS duration > or =130 ms, or mechanical dyssynchrony, underwent isolated or combined coronary artery revascularization and mitral valve overreduction. In all patients, an epicardial lead was secured to the left ventricular wall at the end of the procedure and its extremity was brought into a subclavian pocket. In 5 patients, a resynchronization device was implanted at the time of surgery; in 8, it was implanted at a later date; the remaining 7 patients are awaiting implantation. One patient died postoperatively of low-output syndrome. There was 1 noncardiac late death. Eighteen patients were alive at a mean postoperative follow-up of 21.6 +/- 15.2 months (range, 1-43 mo). There were no subsequent hospital admissions after discharge. New York Heart Association functional class and left ventricular performance were significantly and lastingly improved when cardiac resynchronization therapy was added to the surgical procedure. Despite the limitations inherent in the small number of patients and the relatively short duration of follow-up, this study suggests that patients with dilated cardiomyopathy and left ventricular dyssynchrony in whom surgical correction is indicated may benefit from cardiac resynchronization therapy using a resynchronization device connected to an epicardial lead secured to the left ventricle at the time of surgery.
Assuntos
Cardiomiopatia Dilatada/cirurgia , Ponte de Artéria Coronária , Insuficiência Cardíaca/cirurgia , Isquemia Miocárdica/cirurgia , Marca-Passo Artificial , Idoso , Cardiomiopatia Dilatada/diagnóstico por imagem , Terapia Combinada , Eletrodos Implantados , Desenho de Equipamento , Feminino , Seguimentos , Insuficiência Cardíaca/diagnóstico por imagem , Implante de Prótese de Valva Cardíaca , Humanos , Masculino , Pessoa de Meia-Idade , Isquemia Miocárdica/diagnóstico por imagem , Radiografia , Volume Sistólico/fisiologiaRESUMO
PURPOSE: This study was done to evaluate the diagnostic accuracy of 64-slice computed tomography coronary angiography (CTCA) for the detection of significant coronary artery stenosis in the real clinical world. MATERIALS AND METHOD: From the CTCA database of our institution, we enrolled 145 patients (92 men, 52 women, mean age 63.4 +/- 10.2 years) with suspected coronary artery disease. All patients presented with atypical or typical chest pain and underwent CTCA and conventional coronary angiography (CA). For the CTCA scan (Sensation 64, Siemens, Germany), we administered an IV bolus of 100 ml of iodinated contrast material (Iomeprol 400 mgI/ml, Bracco, Italy). The CTCA and CA reports used to evaluate diagnostic accuracy adopted > or =50% and > or =70%, respectively, as thresholds for significant stenosis. RESULT: Eleven patients were excluded from the analysis because of the nondiagnostic quality of CTCA. The prevalence of disease demonstrated at CA was 63% (84/134). Sensitivity, specificity and positive and negative predictive values for CTCA on a per-segment, per-vessel, and per-patient basis were 75.6%, 85.1%, 97.6%; 86.9%, 81.8%, 58.0%; 48.2%, 68.1%, 79.6%; and 95.7%, 92.3%, 93.5%, respectively. Only two out of 134 eligible patients were false negative. Heart rate did not significantly influence diagnostic accuracy, whereas the absence or minimal presence of coronary calcification improved diagnostic accuracy. The positive and negative likelihood ratios at the per-patient level were 2.32 and 0.041, respectively. CONCLUSION: CTCA in the real clinical world shows a diagnostic performance lower than reported in previous validation studies. The excellent negative predictive value and negative likelihood ratio make CTCA a noninvasive gold standard for exclusion of significant coronary artery disease.