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Dive into the research topics where Luis A. Morita is active.

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Featured researches published by Luis A. Morita.


Journal of The American Society of Echocardiography | 2000

Estimation of the Ejection Fraction in Patients with Myocardial Infarction Obtained from the Combined Index of Systolic and Diastolic Left Ventricular Function: A New Method

Jorge A. Lax; Alejandra Bermann; Tom s F. Cianciulli; Luis A. Morita; Osvaldo A. Masoli; Horacio A. Prezioso

UNLABELLED The index of myocardial performance combining systolic and diastolic time intervals (Index) is a useful method, already explained in past studies, that offers new values that have not been widely known among clinical cardiologists. The aim of this study is to obtain from this Index a measurement of the ejection fraction (EF), which is a very well-known value. The study involved 97 patients with myocardial infarction, 55 of whom were studied retrospectively (group A, aged 46-62 years, 50 men) to obtain and test the formula EF = 60 - (34 x Index). The second group (group B, aged 47-63 years, 40 men) included 42 patients who were evaluated prospectively. The EF obtained was compared with that reached through the use of radionuclide angiography (EF-RNA). The Index was obtained through the use of the formula (a - b)/b, where a is the interval between cessation and onset of the mitral inflow, and b is the ejection time. In group A the EF obtained by the Index (EF-Index) was 37.5% +/-.8%, and the EF-RNA was 37.7% +/- 11% (r = 0.76). In group B the EF-Index was 41.6% +/- 7%, and the EF-RNA was 41.2% +/- 10% (r = 0. 75). CONCLUSION Through the new formula described here it is possible to obtain a reliable measurement of the EF in patients with myocardial infarction, a well-known and extremely useful value, especially for those patients with poor acoustic windows.


Echocardiography-a Journal of Cardiovascular Ultrasound and Allied Techniques | 2017

Bone cement cardiac and pulmonary embolism

Tomás F. Cianciulli; Diego E. Mc Loughlin; Luis A. Morita; María Cristina Saccheri; Jorge A. Lax

This case describes a complication of bone cement use. A 65‐year‐old male patient with back spine trauma caused by a fall, underwent a percutaneous vertebroplasty. Five years later, he consulted for palpitations, and the electrocardiogram showed supraventricular arrhythmia. A transthoracic two‐dimensional echocardiography showed a hyperechogenic linear structure of 7 cm length, running from the lateral wall of the right ventricle to the right atrium through the tricuspid valve. This foreign body, which was suspicious for bone cement embolism, appeared rigid and was attached at the lateral wall of the right ventricle, with its proximal end free in the right atrium. The tip of the cement embolus was inside the myocardium of the lateral wall of the right ventricle, with risk of cardiac perforation. A fluoroscopy was performed, which confirmed the presence of cement within the right heart, with great mobility in each cardiac cycle. Chest computed tomography (CT) and multidetector CT three‐dimensional reconstruction confirmed the presence of cement within the right heart. Chest CT showed two pulmonary embolisms, one in the right upper lobe and one in the left lower pulmonary lobe. This case emphasizes the risk of late clinical manifestations of cardiac and pulmonary embolism of methylmethacrylate after percutaneous vertebroplasty, suggesting that the risk of such embolism might be underestimated. We propose routine chest radiography, two‐dimensional echocardiography, and chest CT after every percutaneous vertebroplasty, to detect asymptomatic cardiac and pulmonary embolism and thereby prevent serious delayed cardiopulmonary failures.


Echocardiography-a Journal of Cardiovascular Ultrasound and Allied Techniques | 2018

Comparison of left atrial size and function in hypertrophic cardiomyopathy and in Fabry disease with left ventricular hypertrophy

María Cristina Saccheri; Tomás F. Cianciulli; Wilde Challapa Licidio; Jorge A. Lax; Martín Alejandro Beck; Luis A. Morita; Juan Gagliardi; Aadelfa

Fabry disease (FD) and hypertrophic cardiomyopathy (HCM) are two diseases with a different pathophysiology, both cause left ventricular hypertrophy (LVH) and myocardial fibrosis. Although remodeling and systolic dysfunction of the left atrium (LA) are associated with atrial fibrillation and stroke in HCM, changes in the size and function of the LA have not been well studied in FD with LVH.


World Journal of Cardiology | 2017

Speckle tracking echocardiography to assess regional ventricular function in patients with apical hypertrophic cardiomyopathy

María Cristina Saccheri; Tomás F. Cianciulli; Luis A. Morita; Ricardo J. Méndez; Martín Alejandro Beck; Juan E. Guerra; Alberto Cozzarin; Luciana Jimena Puente; Lorena Romina Balletti; Jorge A. Lax

AIM To explore regional systolic strain of midwall and endocardial segments using speckle tracking echocardiography in patients with apical hypertrophic cardiomyopathy (HCM). METHODS We prospectively assessed 20 patients (mean age 53 ± 16 years, range: 18-81 years, 10 were male), with apical HCM. We measured global longitudinal peak systolic strain (GLPSS) in the midwall and endocardium of the left ventricle. RESULTS The diastolic thickness of the 4 apical segments was 16.25 ± 2.75 mm. All patients had a normal global systolic function with a fractional shortening of 50% ± 8%. In spite of supernormal left ventricular (LV) systolic function, midwall GLPSS was decreased in all patients, more in the apical (-7.3% ± -8.8%) than in basal segments (-15.5% ± -6.93%), while endocardial GLPPS was significantly greater and reached normal values (apical: -22.8% ± -7.8%, basal: -17.9% ± -7.5%). CONCLUSION This study shows that two-dimensional strain was decreased mainly confined to the mesocardium, while endocardium myocardial deformation was preserved in HCM and allowed to identify subclinical LV dysfunction. This transmural heterogeneity in systolic strain had not been previously described in HCM and could be explained by the distribution of myofibrillar disarray in deep myocardial areas. The clinical application of this novel finding may help further understanding of the pathophysiology of HCM.


Journal of Nuclear Cardiology | 2009

Myocardial perfusion SPECT in the diagnosis of apical hypertrophic cardiomyopathy

Tomás F. Cianciulli; María Cristina Saccheri; Osvaldo H. Masoli; Marcela F. Redruello; Jorge A. Lax; Luis A. Morita; Juan A. Gagliardi; Adriana N. Dorelle; Horacio A. Prezioso; Luis A. Vidal


Cardiovascular Ultrasound | 2006

Early detection of left ventricular diastolic dysfunction in Chagas' disease

Tomás F. Cianciulli; Jorge A. Lax; María Cristina Saccheri; Alonso Papantoniou; Luis A. Morita; Nilda Graciela Prado; Adriana N. Dorelle; Adelina R Riarte; Horacio A. Prezioso


Ultrasound in Medicine and Biology | 1997

CAO 115 Ventricular function: Determination of normal right and left ventricular values with pulsed doppler tissue

Juan E. Guerra; Tomás F. Cianciulli; Jorge A. Lax; Ignacio H Zayat; Luis A. Morita; Adriana N. Dorelle; Prezioso Horacio


Revista Argentina de Cardiología | 2013

Modalidad de presentación clínica y características ecocardiográficas de pacientes portadores de miocardio no compacto

Ricardo J. Méndez; Tomás F. Cianciulli; Jorge A. Lax; Juan Gagliardi; Luis A. Morita; Juan E. Guerra; Adriana N. Dorelle; Horacio A. Prezioso


Revista Argentina de Cardiología | 2013

Clinical Presentation and Echocardiographic Characteristics of Patients with Left Ventricular Noncompaction

Ricardo J. Méndez; Tomás F. Cianciulli; Jorge A. Lax; Juan Gagliardi; Luis A. Morita; Juan E. Guerra; Adriana N. Dorelle; Horacio A. Prezioso


Revista Argentina de Cardiología | 2013

Presentación clínica y características ecocardiográficas en pacientes con miocardio no compacto

Ricardo J. Méndez; Tomás F. Cianciulli; Jorge A. Lax; Juan Gagliardi; Luis A. Morita; Juan E. Guerra; Adriana N. Dorelle; Horacio A. Prezioso

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