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1.
J Infect Chemother ; 30(8): 815-819, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38272261

RESUMEN

This study aimed to clarify other diseases claimed simultaneously with acute upper respiratory infection (URI), antibiotic prescriptions, and examinations associated with infectious diseases in pediatric patients with acute URI insurance claims at otorhinolaryngology outpatient visits. Pediatric patients who visited an otolaryngology department between 2019 and 2021 and were definitively diagnosed with URI were selected using a large Japanese medical claims database. Patient backgrounds, antibiotic use, and examinations were descriptively evaluated. In total, 8010 patients were included in the analysis. The median number (interquartile range) of diseases claimed in the same month as acute URI was 4 (3-6). Only 519 (6.5 %) patients were claimed as acute URI alone. Regardless of the prescription of antibiotics, the most commonly redundantly claimed disease in these patients was allergic rhinitis, followed by acute bronchitis, acute sinusitis, and earwax impaction. The frequently prescribed antibiotics were third-generation cephalosporins, macrolides, and penicillins with extended-spectrum, including amoxicillin which was recommended by the Japanese manual; the proportion of patients with examinations was low (2.9-21.7 %). Among patients with acute URI, diagnoses requiring antibiotics were also claimed; therefore, when evaluating acute URI using the Japanese medical claims database, care must be taken in patient selection. Moreover, the implementation rate of examinations necessary for diagnosis was low, so there is an urgent need to develop an environment where examinations can be conducted in outpatient settings.


Asunto(s)
Antibacterianos , Bases de Datos Factuales , Infecciones del Sistema Respiratorio , Humanos , Japón/epidemiología , Infecciones del Sistema Respiratorio/tratamiento farmacológico , Infecciones del Sistema Respiratorio/diagnóstico , Infecciones del Sistema Respiratorio/epidemiología , Niño , Femenino , Masculino , Preescolar , Antibacterianos/uso terapéutico , Bases de Datos Factuales/estadística & datos numéricos , Lactante , Enfermedad Aguda , Otolaringología/estadística & datos numéricos , Adolescente , Derivación y Consulta/estadística & datos numéricos , Sinusitis/tratamiento farmacológico , Revisión de Utilización de Seguros/estadística & datos numéricos , Bronquitis/tratamiento farmacológico , Bronquitis/diagnóstico , Pueblos del Este de Asia
2.
Catheter Cardiovasc Interv ; 99(1): 171-178, 2022 01 01.
Artículo en Inglés | MEDLINE | ID: mdl-34331844

RESUMEN

OBJECTIVES: The Evolut R FORWARD study confirmed safety and effectivenesss of the Evolut R THV in routine clinical practice out to 1 year. Herein, we report the final 3-year clinical follow up of the FORWARD study. BACKGROUND: Transcatheter aortic valve replacement (TAVR) is a proven alternative to surgery in elderly patients with symptomatic severe aortic stenosis. Long-term clinical outcome data with the Evolut R platform are scarce. METHODS: FORWARD is a prospective multicenter observational study that evaluated the Evolut R system in routine clinical practice at 53 centres. Eligible patients had symptomatic native aortic valve stenosis or failed surgical aortic bioprosthesis and elevated operative risk per Heart-Team assessment. TAVR was attempted in 1039 patients. RESULTS: Mean age was 81.8 ± 6.2 years, 64.9% were women, STS score was 5.5 ± 4.5% and 34.2% were frail. Rates of all-cause mortality and disabling stroke were 24.8% and 4.8% at 3 years. Early need for a new pacemaker implantation after TAVR (all-cause mortality: with new PPI; 21.0% vs. without; 22.8%, p = 0.55) and the presence of > trace paravalvular regurgitation (all-cause mortality: no or trace; 22.0% vs. ≥ mild; 25.5%, p = 0.29) did not affect survival. Between 1 and 3 years incidence rates of valve related intervention, endocarditis and clinically relevant valve thrombosis were low. CONCLUSIONS: The Evolut R valve maintained a favorable safety profile through 3 years in routine clinical practice. Rates of transcatheter heart valve-related adverse events were low.


Asunto(s)
Estenosis de la Válvula Aórtica , Prótesis Valvulares Cardíacas , Reemplazo de la Válvula Aórtica Transcatéter , Anciano , Anciano de 80 o más Años , Válvula Aórtica/diagnóstico por imagen , Válvula Aórtica/cirugía , Estenosis de la Válvula Aórtica/diagnóstico por imagen , Estenosis de la Válvula Aórtica/cirugía , Femenino , Humanos , Estudios Prospectivos , Diseño de Prótesis , Factores de Riesgo , Factores de Tiempo , Reemplazo de la Válvula Aórtica Transcatéter/efectos adversos , Resultado del Tratamiento
3.
Inorg Chem ; 61(28): 10619-10623, 2022 Jul 18.
Artículo en Inglés | MEDLINE | ID: mdl-35775974

RESUMEN

Complex formation of 5-tert-butyl-1,3-phenylene bis(tert-butyl nitroxide) and rare-earth (RE) metal ions gave a linear chain where each nitroxide O atom is directly bonded to the RE ion. The bridge was proven to be a ground triplet molecule in the complexes. A hysteresis loop was recorded below 2.8 K as a single-chain magnet for the RE = Tb derivative.

4.
Europace ; 24(5): 835-844, 2022 05 03.
Artículo en Inglés | MEDLINE | ID: mdl-34734227

RESUMEN

AIMS: To evaluate the benefit of speckle tracking radial strain imaging (STRSI)-guided left ventricular (LV) lead (LVL) positioning in cardiac resynchronization therapy (CRT) in patients (pts) with ischaemic cardiomyopathy with CRT indication. METHODS AND RESULTS: We conducted a prospective randomized controlled trial. Patients were enrolled in nine centres with 2:1 randomization into two groups (guided vs. control). Patients underwent STRSI to identify the optimal LV position from six LV segments at midventricular level. Implantation via STRSI was attempted for recommended segment in the guided group only. Follow-up included echocardiography (6 months) and clinical evaluation (6 and 12 months). The primary endpoint was comparison % reduction in LV end-systolic volume at 6 months with baseline. Secondary endpoints included hospitalizations for heart failure and death, and improvement in additional echocardiographic measurements and quality of life score. A total of 172 patients (115 guided vs. 57 control) were enrolled. In the guided group, 60% of the implanted LV leads were adjudicated to be successfully located at the recommended segment, whereas in the control group 44% reached the best STRSI determined segment. There was no difference between the groups in any of the primary or secondary endpoints at 6 and 12 months. CONCLUSION: Our findings suggest that echo-guided implantation of an LV lead using STRSI does not improve the clinical or echocardiographic response compared with conventional implantation.


Asunto(s)
Terapia de Resincronización Cardíaca , Cardiomiopatías , Insuficiencia Cardíaca , Isquemia Miocárdica , Terapia de Resincronización Cardíaca/efectos adversos , Terapia de Resincronización Cardíaca/métodos , Dispositivos de Terapia de Resincronización Cardíaca , Cardiomiopatías/diagnóstico por imagen , Cardiomiopatías/terapia , Insuficiencia Cardíaca/diagnóstico por imagen , Insuficiencia Cardíaca/terapia , Ventrículos Cardíacos , Humanos , Isquemia Miocárdica/complicaciones , Isquemia Miocárdica/diagnóstico por imagen , Isquemia Miocárdica/terapia , Estudios Prospectivos , Calidad de Vida , Resultado del Tratamiento
5.
J Infect Chemother ; 28(9): 1266-1272, 2022 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-35606308

RESUMEN

INTRODUCTION: Reimbursements for pharmacist interventions and infectious disease teams have recently been introduced in Japan. Arbekacin (ABK) is used to treat pneumonia and sepsis caused by methicillin-resistant Staphylococcus aureus, and therapeutic drug monitoring (TDM) is recommended. This study aimed to clarify the trend in TDM implementation for ABK over time and the factors associated with TDM implementation using a claims database. METHODS: Data of patients aged ≥15 years who received ABK for ≥3 consecutive days between 2010 and 2019 were extracted from a large Japanese medical claims database. The proportion of reimbursements claimed for TDM, pharmacist interventions, and the setup of infectious disease teams for each year were calculated. The factors associated with TDM implementation were identified using multivariate logistic regression analysis. RESULTS: The proportion of TDM implementation for ABK increased by 9.1% from 2010 to 2019, but it remained less than 40% throughout this period. The proportion of TDM implementation was higher in patients who claimed reimbursements for pharmacist interventions than in patients who did not. Logistic regression analysis showed that the stationing of pharmacists in wards and long-term ABK treatment were significantly associated with TDM implementation. CONCLUSIONS: From 2010 to 2019, the proportion of TDM implementation for ABK was significantly low. Moreover, the factors associated with TDM implementation were clarified. An environment wherein pharmacists can help implement TDM for patients receiving ABK would be beneficial.


Asunto(s)
Dibekacina , Staphylococcus aureus Resistente a Meticilina , Aminoglicósidos , Antibacterianos/uso terapéutico , Dibekacina/análogos & derivados , Dibekacina/uso terapéutico , Monitoreo de Drogas , Humanos , Japón
6.
Eur Heart J ; 42(30): 2885-2896, 2021 08 07.
Artículo en Inglés | MEDLINE | ID: mdl-33748852

RESUMEN

AIMS: Early detection of aortic stenosis (AS) is becoming increasingly important with a better outcome after aortic valve replacement in asymptomatic severe AS patients and a poor outcome in moderate AS. We aimed to develop artificial intelligence-enabled electrocardiogram (AI-ECG) using a convolutional neural network to identify patients with moderate to severe AS. METHODS AND RESULTS: Between 1989 and 2019, 258 607 adults [mean age 63 ± 16.3 years; women 122 790 (48%)] with an echocardiography and an ECG performed within 180 days were identified from the Mayo Clinic database. Moderate to severe AS by echocardiography was present in 9723 (3.7%) patients. Artificial intelligence training was performed in 129 788 (50%), validation in 25 893 (10%), and testing in 102 926 (40%) randomly selected subjects. In the test group, the AI-ECG labelled 3833 (3.7%) patients as positive with the area under the curve (AUC) of 0.85. The sensitivity, specificity, and accuracy were 78%, 74%, and 74%, respectively. The sensitivity increased and the specificity decreased as age increased. Women had lower sensitivity but higher specificity compared with men at any age groups. The model performance increased when age and sex were added to the model (AUC 0.87), which further increased to 0.90 in patients without hypertension. Patients with false-positive AI-ECGs had twice the risk for developing moderate or severe AS in 15 years compared with true negative AI-ECGs (hazard ratio 2.18, 95% confidence interval 1.90-2.50). CONCLUSION: An AI-ECG can identify patients with moderate or severe AS and may serve as a powerful screening tool for AS in the community.


Asunto(s)
Estenosis de la Válvula Aórtica , Inteligencia Artificial , Adulto , Anciano , Válvula Aórtica/diagnóstico por imagen , Estenosis de la Válvula Aórtica/diagnóstico , Electrocardiografía , Femenino , Humanos , Masculino , Tamizaje Masivo , Persona de Mediana Edad , Redes Neurales de la Computación , Estudios Retrospectivos
7.
Int J Mol Sci ; 23(2)2022 Jan 15.
Artículo en Inglés | MEDLINE | ID: mdl-35055113

RESUMEN

Methionine (Met) is considered the most toxic amino acid in mammals. Here, we investigated biochemical and behavioral impacts of ad libitum one-week feeding of high-Met diets on mice. Adult male mice were fed the standard rodent diet that contained 0.44% Met (1×) or a diet containing 16 graded Met doses (1.2×-13×). High-Met diets for one-week induced a dose-dependent decrease in body weight and an increase in serum Met levels with a 2.55 mM peak (versus basal 53 µM) on the 12×Met diet. Total homocysteine (Hcy) levels were also upregulated while concentrations of other amino acids were almost maintained in serum. Similarly, levels of Met and Hcy (but not the other amino acids) were highly elevated in the cerebrospinal fluids of mice on the 10×Met diet; the Met levels were much higher than Hcy and the others. In a series of behavioral tests, mice on the 10×Met diet displayed increased anxiety and decreased traveled distances in an open-field test, increased activity to escape from water soaking and tail hanging, and normal learning/memory activity in a Y-maze test, which were reflections of negative/positive symptoms and normal cognitive function, respectively. These results indicate that high-Met ad libitum feeding even for a week can induce bipolar disorder-like disease models in mice.


Asunto(s)
Trastorno Bipolar/psicología , Homocisteína/sangre , Metionina/efectos adversos , Aminoácidos/sangre , Aminoácidos/líquido cefalorraquídeo , Animales , Trastorno Bipolar/sangre , Trastorno Bipolar/líquido cefalorraquídeo , Trastorno Bipolar/inducido químicamente , Modelos Animales de Enfermedad , Esquema de Medicación , Homocisteína/líquido cefalorraquídeo , Masculino , Metionina/sangre , Metionina/líquido cefalorraquídeo , Ratones , Prueba de Campo Abierto/efectos de los fármacos , Regulación hacia Arriba
8.
Molecules ; 27(15)2022 Aug 02.
Artículo en Inglés | MEDLINE | ID: mdl-35956880

RESUMEN

A new ground triplet biradical 2',4',6'-triisopropylbiphenyl-3,5-diyl bis(tert-butyl nitroxide) (iPr3BPBN) was prepared and characterized by means of room-temperature ESR spectroscopy displaying a zero-field splitting pattern together with a half-field signal. Complex formation with gadolinium(III) 1,1,1,5,5,5-hexafluoropentane-2,4-dionate (hfac) afforded a macrocycle [{Gd(hfac)3(µ-iPr3BPBN)}2]. As the X-ray crystallographic analysis clarified, the biradical serves as a bridging ligand, giving a 16-membered ring, where each nitroxide radical oxygen atom is directly bonded to a Gd3+ ion. The magnetic study revealed that the iPr3BPBN bridge behaved as a practically triplet biradical and that the Gd3+-radical magnetic coupling was weakly ferromagnetic. The exchange parameters were estimated as 2jrad-rad/kB > 300 K and 2JGd-rad/kB = 1.2 K in the H = −2J S1•S2 convention. The DFT calculation based on the atomic coordinates clarified the ground triplet nature in metal-free iPr3BPBN and the enhanced triplet character upon coordination. The calculation also suggests that ferromagnetic coupling would be favorable when the Gd-O-N-C(sp2) torsion comes around 100°. The present results are compatible with the proposed magneto-structure relationship on the nitroxide-Gd compounds.


Asunto(s)
Gadolinio , Cristalografía por Rayos X , Espectroscopía de Resonancia por Spin del Electrón , Gadolinio/química , Iones , Modelos Moleculares
9.
Water Sci Technol ; 80(1): 184-190, 2019 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-31461435

RESUMEN

An electrochemical flow cell was introduced into the electrochemical Fenton-type process using a Cu(I)/HOCl system. The effects of the current density and the initial cupric ion (Cu2+) concentration on the process performance were discussed. The current efficiency of the process improved from 6.1% for an electrolytic tank system to 33% for the electrochemical flow cell system at a current density of 5.0 mA/cm2 and an initial Cu2+ concentration of 1.0 mM. The current efficiency increased to 58% for Cu2+ concentrations of 2.0 mM and beyond. The cathodic reduction of Cu2+ to the cuprous ion (Cu+) emerged as the rate-determining step in comparison to the anodic production of free chlorine. The introduction of the electrochemical flow cell enhanced the cathodic production of Cu+ by reinforcing the mass transfer of the Cu2+ to the cathode, and the detachment of micro bubbles generated electrochemically at the cathode surface. A decrease in the current density and an increase in the initial Cu2+ concentration also improved the current efficiency by promoting the cathodic production of Cu+. This involved the prevention of the cathodic reduction of protons to hydrogen gas and the elevation of the electrode potential of the cathodic reaction from Cu2+ to Cu+.


Asunto(s)
Eliminación de Residuos Líquidos/métodos , Cobre/química , Electrodos , Oxidación-Reducción
10.
Echocardiography ; 31(8): 936-40, 2014 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-24372958

RESUMEN

BACKGROUND: Left atrial volumes (LAVs) have been suggested to represent long-term exposure to elevated pressures. This study examined the recurrence of heart failure (HF) based on LAV in patients initially diagnosed with congestive HF (CHF). METHODS: This study comprised 77 patients (age, 75 ± 8 years) with well-documented, clinically defined HF, and complete two-dimensional echocardiographic examinations. The echocardiographic examinations were performed on admission and after medical treatment (90 ± 43 days after initial examination). Patients with atrial fibrillation, flail mitral valve, or mitral valve replacement were excluded from this study. RESULTS: The initial left ventricular ejection fraction (LVEF) was 44 ± 17% and the indexed LAV (LAVI) was 61 ± 22 mL/m(2) . After medical treatment, a decreased LAVI was observed in 38 patients and an increased LAVI (LA remodeling) was observed in 39 patients. With median follow-up periods of 454 days, compared to patients with decreased LAVI, patients with LA remodeling had a significantly higher incidence of CHF recurrence (P = 0.008). Patients with LA remodeling had a CHF-free survival rate of 36 ± 13% vs. 81 ± 9% (those without LA remodeling). A multivariate analysis indicated that, follow-up LV end-systolic volume (P = 0.04), LVEF (P = 0.005) and LAVI (P = 0.04) independently predicted CHF recurrence. CONCLUSIONS: Patients initially diagnosed with CHF follow divergent courses based on their LAV. LA remodeling after medical treatment can be useful for predicting CHF recurrence during follow-up.


Asunto(s)
Remodelación Atrial , Ecocardiografía/métodos , Atrios Cardíacos/diagnóstico por imagen , Insuficiencia Cardíaca/complicaciones , Insuficiencia Cardíaca/diagnóstico por imagen , Disfunción Ventricular Izquierda/diagnóstico por imagen , Disfunción Ventricular Izquierda/etiología , Anciano , Diagnóstico Diferencial , Femenino , Insuficiencia Cardíaca/terapia , Humanos , Masculino , Recurrencia , Reproducibilidad de los Resultados , Sensibilidad y Especificidad , Volumen Sistólico , Resultado del Tratamiento , Disfunción Ventricular Izquierda/terapia
11.
Int Heart J ; 55(6): 555-9, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-25297504

RESUMEN

Giant cell arteritis (GCA) is an autoimmune disease characterized by granulomatous inflammation in the wall of medium-sized and large-sized arteries, and it usually occurs in patients over 50 years of age.(1)) Symptoms are nonspecific, and include fatigue, fever, and headache.(2)) It is occasionally combined with aortic complications, and ruptures resulting in death. These complications occur as late events, usually several years after diagnosis and often after other symptoms have subsided.(3)) Physicians should therefore be alert for complications of the large arteries in GCA. Here we present a case of GCA combined with ascending aortic dissection and rupture 3 weeks after diagnosis.


Asunto(s)
Rotura de la Aorta/etiología , Arteritis de Células Gigantes/complicaciones , Anciano , Aorta/patología , Femenino , Arteritis de Células Gigantes/diagnóstico , Humanos , Arterias Temporales/patología
12.
J Med Ultrason (2001) ; 41(1): 73-6, 2014 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-27277636

RESUMEN

A 70-year-old man was admitted because of syncope and dyspnea. Two months before admission, exertional dyspnea occurred with syncope. Ventricular tachycardia with a monomorphic left bundle-branch block configuration was detected. An echocardiographic examination showed severe dilatation and diffuse, severe hypokinesis of the right ventricle, with thrombus formation in the right ventricular apex. Based on the clinical picture, the patient was diagnosed with arrhythmogenic right ventricular cardiomyopathy (ARVC). This case emphasizes the need for early identification of RV abnormalities in patients with ARVC to determine appropriate therapy.

13.
J Vet Med Sci ; 86(2): 224-227, 2024 Feb 15.
Artículo en Inglés | MEDLINE | ID: mdl-38233130

RESUMEN

In a windowless poultry house raising layer chickens in Kanagawa prefecture, Japan, a slight increase in the mortality of chickens and a decrease in egg production were observed. Necropsy revealed numerous tapeworms and proglottids in chicken intestines. Histopathologically, gut-associated lymphoid tissues were observed in the lamina propria of the jejunum; however, no significant changes were observed in the other organs. Numerous hide beetles, Dermestes maculatus DeGeer, intermediate hosts of Raillietina cesticillus, were observed in the poultry house. Following a decline in beetle numbers, egg production increased and chicken mortality decreased. The life cycle of a tapeworm was easily established in a closed space, such as a windowless house, which led to severe infections.


Asunto(s)
Cestodos , Infecciones por Cestodos , Enfermedades de las Aves de Corral , Animales , Pollos , Aves de Corral , Infecciones por Cestodos/veterinaria
14.
Intern Med ; 2024 Mar 25.
Artículo en Inglés | MEDLINE | ID: mdl-38522908

RESUMEN

A 70-year-old woman with anti-aminoacyl-tRNA synthetase (ARS) antibody-positive interstitial lung disease (ARS-ILD) received daily medications and regular cyclophosphamide cycles for recurring exacerbations. Approximately four years after immunosuppression initiation, the patient was admitted for progressive dyspnea on exertion. Chest computed tomography (CT) findings were suggestive of acute exacerbation. Despite intensified immunosuppressive treatment, the radiographic findings worsened, and serum Krebs von den Lungen-6 (KL-6) levels increased. A bronchoalveolar lavage fluid (BALF) examination revealed amorphous globules and alveolar macrophages with eosinophilic granules. Owing to negative anti-GM-CSF antibody tests, a diagnosis of secondary pulmonary alveolar proteinosis (PAP) was established.

15.
Eur J Cardiothorac Surg ; 65(5)2024 May 03.
Artículo en Inglés | MEDLINE | ID: mdl-38710669

RESUMEN

OBJECTIVES: The objective of this analysis was to assess the normal haemodynamic performance of contemporary surgical aortic valves at 1 year postimplant in patients undergoing surgical aortic valve replacement for significant valvular dysfunction. By pooling data from 4 multicentre studies, this study will contribute to a better understanding of the effectiveness of surgical aortic valve replacement procedures, aiding clinicians and researchers in making informed decisions regarding valve selection and patient management. METHODS: Echocardiograms were assessed by a single core laboratory. Effective orifice area, dimensionless velocity index, mean aortic gradient, peak aortic velocity and stroke volume were evaluated. RESULTS: The cohort included 2958 patients. Baseline age in the studies ranged from 70.1 ± 9.0 to 83.3 ± 6.4 years, and Society of Thoracic Surgeons risk of mortality was 1.9 ± 0.7 to 7.5 ± 3.4%. Twenty patients who had received a valve model implanted in fewer than 10 cases were excluded. Ten valve models (all tissue valves; n = 2938 patients) were analysed. At 1 year, population mean effective orifice area ranged from 1.46 ± 0.34 to 2.12 ± 0.59 cm2, and dimensionless velocity index, from 0.39 ± 0.07 to 0.56 ± 0.15. The mean gradient ranged from 8.6 ± 3.4 to 16.1 ± 6.2 mmHg with peak aortic velocity of 1.96 ± 0.39 to 2.65 ± 0.47 m/s. Stroke volume was 75.3 ± 19.6 to 89.8 ± 24.3 ml. CONCLUSIONS: This pooled cohort is the largest to date of contemporary surgical aortic valves with echocardiograms analysed by a single core lab. Overall haemodynamic performance at 1 year ranged from good to excellent. These data can serve as a benchmark for other studies and may be useful to evaluate the performance of bioprosthetic surgical valves over time. CLINICAL TRIAL REGISTRATION NUMBER: NCT02088554, NCT02701283, NCT01586910 and NCT01531374.


Asunto(s)
Válvula Aórtica , Bioprótesis , Implantación de Prótesis de Válvulas Cardíacas , Prótesis Valvulares Cardíacas , Hemodinámica , Humanos , Hemodinámica/fisiología , Válvula Aórtica/cirugía , Válvula Aórtica/diagnóstico por imagen , Anciano , Femenino , Masculino , Anciano de 80 o más Años , Implantación de Prótesis de Válvulas Cardíacas/métodos , Ecocardiografía , Persona de Mediana Edad , Diseño de Prótesis
16.
NPJ Digit Med ; 7(1): 4, 2024 Jan 06.
Artículo en Inglés | MEDLINE | ID: mdl-38182738

RESUMEN

Assessment of left ventricular diastolic function plays a major role in the diagnosis and prognosis of cardiac diseases, including heart failure with preserved ejection fraction. We aimed to develop an artificial intelligence (AI)-enabled electrocardiogram (ECG) model to identify echocardiographically determined diastolic dysfunction and increased filling pressure. We trained, validated, and tested an AI-enabled ECG in 98,736, 21,963, and 98,763 patients, respectively, who had an ECG and echocardiographic diastolic function assessment within 14 days with no exclusion criteria. It was also tested in 55,248 patients with indeterminate diastolic function by echocardiography. The model was evaluated using the area under the curve (AUC) of the receiver operating characteristic curve, and its prognostic performance was compared to echocardiography. The AUC for detecting increased filling pressure was 0.911. The AUCs to identify diastolic dysfunction grades ≥1, ≥2, and 3 were 0.847, 0.911, and 0.943, respectively. During a median follow-up of 5.9 years, 20,223 (20.5%) died. Patients with increased filling pressure predicted by AI-ECG had higher mortality than those with normal filling pressure, after adjusting for age, sex, and comorbidities in the test group (hazard ratio (HR) 1.7, 95% CI 1.645-1.757) similar to echocardiography and in the indeterminate group (HR 1.34, 95% CI 1.298-1.383). An AI-enabled ECG identifies increased filling pressure and diastolic function grades with a good prognostic value similar to echocardiography. AI-ECG is a simple and promising tool to enhance the detection of diseases associated with diastolic dysfunction and increased diastolic filling pressure.

17.
Eur Heart J Digit Health ; 4(3): 196-206, 2023 May.
Artículo en Inglés | MEDLINE | ID: mdl-37265870

RESUMEN

Aims: An artificial intelligence-enabled electrocardiogram (AI-ECG) is a promising tool to detect patients with aortic stenosis (AS) before developing symptoms. However, functional, structural, or haemodynamic components reflected in AI-ECG responsible for its detection are unknown. Methods and results: The AI-ECG model that was developed at Mayo Clinic using a convolutional neural network to identify patients with moderate-severe AS was applied. In patients used as the testing group, the correlation between the AI-ECG probability of AS and echocardiographic parameters was investigated. This study included 102 926 patients (63.0 ± 16.3 years, 52% male), and 28 464 (27.7%) were identified as AS positive by AI-ECG. Older age, atrial fibrillation, hypertension, diabetes, coronary artery disease, and heart failure were more common in the positive AI-ECG group than in the negative group (P < 0.001). The AI-ECG was correlated with aortic valve area (ρ = -0.48, R2 = 0.20), peak velocity (ρ = 0.22, R2 = 0.08), and mean pressure gradient (ρ = 0.35, R2 = 0.08). The AI-ECG also correlated with left ventricular (LV) mass index (ρ = 0.36, R2 = 0.13), E/e' (ρ = 0.36, R2 = 0.12), and left atrium volume index (ρ = 0.42, R2 = 0.12). Neither LV ejection fraction nor stroke volume index had a significant correlation with the AI-ECG. Age correlated with the AI-ECG (ρ = 0.46, R2 = 0.22) and its correlation with echocardiography parameters was similar to that of the AI-ECG. Conclusion: A combination of AS severity, diastolic dysfunction, and LV hypertrophy is reflected in the AI-ECG to detect AS. There seems to be a gradation of the cardiac anatomical/functional features in the model and its identification process of AS is multifactorial.

18.
Open Heart ; 10(1)2023 05.
Artículo en Inglés | MEDLINE | ID: mdl-37173100

RESUMEN

OBJECTIVE: To evaluate whether transcatheter or surgical aortic valve replacement (TAVR or SAVR) affects clinical and haemodynamic outcomes in symptomatic patients with moderately-severe aortic stenosis (AS). METHODS: Echocardiographic evidence of severe AS for enrolment in the Evolut Low Risk trial was based on site-reported measurements. For this post hoc analysis, core laboratory measurements identified patients with symptomatic moderately-severe AS (1.0

Asunto(s)
Estenosis de la Válvula Aórtica , Implantación de Prótesis de Válvulas Cardíacas , Humanos , Válvula Aórtica/diagnóstico por imagen , Válvula Aórtica/cirugía , Implantación de Prótesis de Válvulas Cardíacas/efectos adversos , Calidad de Vida , Estenosis de la Válvula Aórtica/diagnóstico por imagen , Estenosis de la Válvula Aórtica/cirugía , Estenosis de la Válvula Aórtica/etiología , Resultado del Tratamiento
19.
J Am Coll Cardiol ; 81(17): 1663-1674, 2023 05 02.
Artículo en Inglés | MEDLINE | ID: mdl-36882136

RESUMEN

BACKGROUND: Randomized data comparing outcomes of transcatheter aortic valve replacement (TAVR) with surgery in low-surgical risk patients at time points beyond 2 years is limited. This presents an unknown for physicians striving to educate patients as part of a shared decision-making process. OBJECTIVES: The authors evaluated 3-year clinical and echocardiographic outcomes from the Evolut Low Risk trial. METHODS: Low-risk patients were randomized to TAVR with a self-expanding, supra-annular valve or surgery. The primary endpoint of all-cause mortality or disabling stroke and several secondary endpoints were assessed at 3 years. RESULTS: There were 1,414 attempted implantations (730 TAVR; 684 surgery). Patients had a mean age of 74 years and 35% were women. At 3 years, the primary endpoint occurred in 7.4% of TAVR patients and 10.4% of surgery patients (HR: 0.70; 95% CI: 0.49-1.00; P = 0.051). The difference between treatment arms for all-cause mortality or disabling stroke remained broadly consistent over time: -1.8% at year 1; -2.0% at year 2; and -2.9% at year 3. The incidence of mild paravalvular regurgitation (20.3% TAVR vs 2.5% surgery) and pacemaker placement (23.2% TAVR vs 9.1% surgery; P < 0.001) were lower in the surgery group. Rates of moderate or greater paravalvular regurgitation for both groups were <1% and not significantly different. Patients who underwent TAVR had significantly improved valve hemodynamics (mean gradient 9.1 mm Hg TAVR vs 12.1 mm Hg surgery; P < 0.001) at 3 years. CONCLUSIONS: Within the Evolut Low Risk study, TAVR at 3 years showed durable benefits compared with surgery with respect to all-cause mortality or disabling stroke. (Medtronic Evolut Transcatheter Aortic Valve Replacement in Low Risk Patients; NCT02701283).


Asunto(s)
Insuficiencia de la Válvula Aórtica , Estenosis de la Válvula Aórtica , Prótesis Valvulares Cardíacas , Accidente Cerebrovascular , Reemplazo de la Válvula Aórtica Transcatéter , Humanos , Femenino , Anciano , Masculino , Válvula Aórtica/cirugía , Insuficiencia de la Válvula Aórtica/cirugía , Factores de Riesgo , Resultado del Tratamiento , Estudios Prospectivos , Reemplazo de la Válvula Aórtica Transcatéter/efectos adversos , Prótesis Valvulares Cardíacas/efectos adversos , Accidente Cerebrovascular/epidemiología , Accidente Cerebrovascular/etiología , Accidente Cerebrovascular/cirugía
20.
JAMA Cardiol ; 8(2): 111-119, 2023 02 01.
Artículo en Inglés | MEDLINE | ID: mdl-36515976

RESUMEN

Importance: The frequency and clinical importance of structural valve deterioration (SVD) in patients undergoing self-expanding transcatheter aortic valve implantation (TAVI) or surgery is poorly understood. Objective: To evaluate the 5-year incidence, clinical outcomes, and predictors of hemodynamic SVD in patients undergoing self-expanding TAVI or surgery. Design, Setting, and Participants: This post hoc analysis pooled data from the CoreValve US High Risk Pivotal (n = 615) and SURTAVI (n = 1484) randomized clinical trials (RCTs); it was supplemented by the CoreValve Extreme Risk Pivotal trial (n = 485) and CoreValve Continued Access Study (n = 2178). Patients with severe aortic valve stenosis deemed to be at intermediate or increased risk of 30-day surgical mortality were included. Data were collected from December 2010 to June 2016, and data were analyzed from December 2021 to October 2022. Interventions: Patients were randomized to self-expanding TAVI or surgery in the RCTs or underwent self-expanding TAVI for clinical indications in the nonrandomized studies. Main Outcomes and Measures: The primary end point was the incidence of SVD through 5 years (from the RCTs). Factors associated with SVD and its association with clinical outcomes were evaluated for the pooled RCT and non-RCT population. SVD was defined as (1) an increase in mean gradient of 10 mm Hg or greater from discharge or at 30 days to last echocardiography with a final mean gradient of 20 mm Hg or greater or (2) new-onset moderate or severe intraprosthetic aortic regurgitation or an increase of 1 grade or more. Results: Of 4762 included patients, 2605 (54.7%) were male, and the mean (SD) age was 82.1 (7.4) years. A total of 2099 RCT patients, including 1128 who received TAVI and 971 who received surgery, and 2663 non-RCT patients who received TAVI were included. The cumulative incidence of SVD treating death as a competing risk was lower in patients undergoing TAVI than surgery (TAVI, 2.20%; surgery, 4.38%; hazard ratio [HR], 0.46; 95% CI, 0.27-0.78; P = .004). This lower risk was most pronounced in patients with smaller annuli (23 mm diameter or smaller; TAVI, 1.32%; surgery, 5.84%; HR, 0.21; 95% CI, 0.06-0.73; P = .02). SVD was associated with increased 5-year all-cause mortality (HR, 2.03; 95% CI, 1.46-2.82; P < .001), cardiovascular mortality (HR, 1.86; 95% CI, 1.20-2.90; P = .006), and valve disease or worsening heart failure hospitalizations (HR, 2.17; 95% CI, 1.23-3.84; P = .008). Predictors of SVD were developed from multivariate analysis. Conclusions and Relevance: This study found a lower rate of SVD in patients undergoing self-expanding TAVI vs surgery at 5 years. Doppler echocardiography was a valuable tool to detect SVD, which was associated with worse clinical outcomes. Trial Registration: ClinicalTrials.gov Identifiers: NCT01240902, NCT01586910, and NCT01531374.


Asunto(s)
Estenosis de la Válvula Aórtica , Implantación de Prótesis de Válvulas Cardíacas , Reemplazo de la Válvula Aórtica Transcatéter , Masculino , Humanos , Anciano de 80 o más Años , Femenino , Válvula Aórtica/cirugía , Resultado del Tratamiento , Reemplazo de la Válvula Aórtica Transcatéter/efectos adversos
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