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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Quantitative Imaging of Diastolic Function using Cardiac Magnetic Resonance Imaging

Cheng Baron, June Unknown Date
No description available.
2

Efeito agudo de CPAP na funçao diastólica ventricular e na capacidade funcional de pacientes com insuficiência cardíaca /

Bussoni, Márjory Fernanda. January 2011 (has links)
Resumo: A insuficiência cardíaca (IC) é uma síndrome grave associada a alta mortalidade em 5 anos, após o início dos sintomas. Portanto, é de interesse o estudo de tratamentos farmacológicos e não-farmacológicos que visem impedir a progressão da lesão miocárdica, reduzir os sintomas e melhorar a qualidade de vida. Uma das formas de tratamento não farmacológico é o uso de Pressão Positiva Contínua em Vias Aéreas (CPAP). Estudos mostraram que a CPAP está associada com melhora da função sistólica ventricular esquerda. Entretanto, há poucos dados na literatura referentes aos seus efeitos na função diastólica. Objetivos: o objetivo primário desse estudo foi avaliar os efeitos de sessão única de CPAP na função diastólica ventricular e na capacidade funcional de pacientes com IC compensada. Adicionalmente, foram analisadas, nesses pacientes, as associações entre capacidade funcional e função ventricular; capacidade funcional e qualidade de vida; e função ventricular e qualidade de vida. Estudo prospectivo, randomizado e duplo-cego, utilizando programa informatizado de números aleatórios, na proporção 1:1. Vinte e um pacientes foram alocados no grupo sham (ou CPAP simulado) e 23 no grupo CPAP, que recebeu a intervenção. Os pacientes, inicialmente, permaneciam 10 minutos em repouso e passavam por avaliação clínica. Em seguida, eram submetidos a ecocardiograma basal. Então, realizavam Teste de caminhada de 6 minutos (TC6) para aprendizagem, sendo que os dados obtidos nesse teste foram descartados. Enquanto descansavam por, no mínimo, 15 minutos, os pacientes respondiam ao Questionário de Qualidade de Vida de Minnesota (QQVM). Após, realizavam um segundo TC6, no qual os dados foram utilizados para análise. Ao seu término, os pacientes do Grupo CPAP recebiam a intervenção por 30 minutos a uma pressão de 10 cmH20. O pacientes do Grupo Sham permaneciam... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Heart failure (HF) is a syndrome associated with high mortality within 5 years after the onset of symptoms. Therefore) the study on pharmacological and non-pharmacological therapies for preventing myocardial damage progression) reducing symptoms and improving quality of life is desirable. One of the forms of non-drug treatment is the use of Continuous Positive Airway Pressure (CPAP). Studies have shown that CPAP is associated with left ventricular systolic function improvement. However) few data are available referring to its effects on diastolic function. The primary aim of this study was to evaluate the effects of a single CPAP session on ventricular diastolic function and on the functional capacity of patients with compensated HF. Additionally) the associations between functional capacity and ventricular function) functional capacity and quality of life and ventricular function and quality of Iife were analyzed in these patients. This was a prospective) randomized) double-blind study using a random-figure computerized program in the proportion of 1:1. Twenty-one patients were included in the Sham group (or simulated CPAP) and 23 in the CPAP group) which received the intervention. Initially) the patients rested for 10 minutes and then underwent c1inical evaluation. Next) they were submitted to a basal echocardiogram. Then) the six-minute walk test (6MWT) was performed for learning) and the data obtained in that test were discarded. While they rested for at least 15 minutes) the patients answered the Minnesota Living with Heart Failure Questionnaire (MLHFQ). They then performed the second 6MWT) in which the data were used for analysis. Upon completion) the patients in the CPAP group received the intervention for 30 minutes at apressure of 10 cmH20. The patients in the Sham group kept the CPAP mask on for that period of time) but without producing positive pressure. Next)... (Complete abstract click electronic access below) / Orientador: Beatriz Bojikian Matsubara / Coorientador: Silméia Garcia Zanati / Banca: Victor Zunica Dourado / Banca: Audrey Borghi e Silva / Mestre
3

Glucocorticoids Activate Cardiac Mineralocorticoid Receptors in Adrenalectomized Dahl Salt- Sensitive Rats

NAGATA, KOHZO, MUROHARA, TOYOAKI, CHENG, XIAN WU, WATANABE, SHOGO, MIYACHI, MASAAKI, OHTAKE, MAYUKO, TAKATSU, MIWA, TAKAHASHI, KEIJI, MURASE, TAMAYO, HATTORI, TAKUYA, OHTAKE, MASAFUMI 02 1900 (has links)
No description available.
4

Efeito agudo de CPAP na funçao diastólica ventricular e na capacidade funcional de pacientes com insuficiência cardíaca

Bussoni, Márjory Fernanda [UNESP] 17 February 2011 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:25:36Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-02-17Bitstream added on 2014-06-13T20:14:17Z : No. of bitstreams: 1 bussoni_mf_me_botfm.pdf: 519756 bytes, checksum: c724f1d40d7988265c8b8b601c44ca60 (MD5) / A insuficiência cardíaca (IC) é uma síndrome grave associada a alta mortalidade em 5 anos, após o início dos sintomas. Portanto, é de interesse o estudo de tratamentos farmacológicos e não-farmacológicos que visem impedir a progressão da lesão miocárdica, reduzir os sintomas e melhorar a qualidade de vida. Uma das formas de tratamento não farmacológico é o uso de Pressão Positiva Contínua em Vias Aéreas (CPAP). Estudos mostraram que a CPAP está associada com melhora da função sistólica ventricular esquerda. Entretanto, há poucos dados na literatura referentes aos seus efeitos na função diastólica. Objetivos: o objetivo primário desse estudo foi avaliar os efeitos de sessão única de CPAP na função diastólica ventricular e na capacidade funcional de pacientes com IC compensada. Adicionalmente, foram analisadas, nesses pacientes, as associações entre capacidade funcional e função ventricular; capacidade funcional e qualidade de vida; e função ventricular e qualidade de vida. Estudo prospectivo, randomizado e duplo-cego, utilizando programa informatizado de números aleatórios, na proporção 1:1. Vinte e um pacientes foram alocados no grupo sham (ou CPAP simulado) e 23 no grupo CPAP, que recebeu a intervenção. Os pacientes, inicialmente, permaneciam 10 minutos em repouso e passavam por avaliação clínica. Em seguida, eram submetidos a ecocardiograma basal. Então, realizavam Teste de caminhada de 6 minutos (TC6) para aprendizagem, sendo que os dados obtidos nesse teste foram descartados. Enquanto descansavam por, no mínimo, 15 minutos, os pacientes respondiam ao Questionário de Qualidade de Vida de Minnesota (QQVM). Após, realizavam um segundo TC6, no qual os dados foram utilizados para análise. Ao seu término, os pacientes do Grupo CPAP recebiam a intervenção por 30 minutos a uma pressão de 10 cmH20. O pacientes do Grupo Sham permaneciam... / Heart failure (HF) is a syndrome associated with high mortality within 5 years after the onset of symptoms. Therefore) the study on pharmacological and non-pharmacological therapies for preventing myocardial damage progression) reducing symptoms and improving quality of life is desirable. One of the forms of non-drug treatment is the use of Continuous Positive Airway Pressure (CPAP). Studies have shown that CPAP is associated with left ventricular systolic function improvement. However) few data are available referring to its effects on diastolic function. The primary aim of this study was to evaluate the effects of a single CPAP session on ventricular diastolic function and on the functional capacity of patients with compensated HF. Additionally) the associations between functional capacity and ventricular function) functional capacity and quality of life and ventricular function and quality of Iife were analyzed in these patients. This was a prospective) randomized) double-blind study using a random-figure computerized program in the proportion of 1:1. Twenty-one patients were included in the Sham group (or simulated CPAP) and 23 in the CPAP group) which received the intervention. Initially) the patients rested for 10 minutes and then underwent c1inical evaluation. Next) they were submitted to a basal echocardiogram. Then) the six-minute walk test (6MWT) was performed for learning) and the data obtained in that test were discarded. While they rested for at least 15 minutes) the patients answered the Minnesota Living with Heart Failure Questionnaire (MLHFQ). They then performed the second 6MWT) in which the data were used for analysis. Upon completion) the patients in the CPAP group received the intervention for 30 minutes at apressure of 10 cmH20. The patients in the Sham group kept the CPAP mask on for that period of time) but without producing positive pressure. Next)... (Complete abstract click electronic access below)
5

TGF-β<sub>1</sub> Overexpression: A Mechanism of Diastolic Filling Dysfunction in the Aged Population

Larson, Douglas F., Ingham, Rene, Alwardt, Cory M., Yang, Bo 01 March 2004 (has links)
The prevalence of cardiovascular disease in the United States dramatically increases with age. A hallmark feature of the aged myocardium is increased fibrosis resulting in diastolic dysfunction. Moreover, the survival of patients subsequent to a myocardial infarction is inversely related to age because of a certain extent to maladaptive remodeling mediated by cardiac fibroblasts. Our hypothesis is that cardiac fibroblast (CF) dysfunction results in overexpressed TGF-β1 leading to increased cardiac collagen content in the aged population. TGF-β1 stimulates the synthesis of the extracellular matrix proteins, including collagen in the cardiac tissues. The RT-PCR analysis of mRNA expression of TGF-β1 of the CF was increased by 43% in the aged mice as compared to the younger. The stiffness of the left ventricle is expressed with the slope of the end-diastolic pressure-volume relationship parameter, β (mmHg/μL). In a mouse model, we demonstrated that β was 0.30 ± 0.05 in the young as compared to 0.52 ± 0.10 in the aged (p < .05). The ventricular stiffness was associated with the myocardial collagen content; namely, young versus the aged was 9.5 ± 4.0 as compared to 16.4 ± 2.3% of total protein, respectively (p < .05). In conclusion, the gene structure-function relationships support our hypothesis that cardiac fibroblast disregulation contributes to diastolic filling dysfunction in elderly persons. These data provide a potential contributory mechanism for diastolic dysfunction that may be vital in caring for the aged open-heart surgical patient.
6

Diastolic Function Grading by American Society of Echocardiography Guidelines and Prediction of Heart Failure Readmission and All-Cause Mortality in a Community-Based Cohort

Lavine, Steven J., Murtaza, Ghulam, Rahman, Zia U., Kelvas, Danielle, Paul, Timir K. 01 January 2021 (has links)
Background: Diastolic function (DF) guidelines have been simplified but lack extensive outcome data. Using a rural university heart failure (HF) database, we assessed whether DF grading could predict HF, HF readmission, and all-cause mortality (ACM). Methods: In this single-center retrospective study that included 613 patients in sinus rhythm hospitalized for HF (HF with preserved—254 patients, with mid-range—216 patients, and reduced ejection fraction—143 patients), we recorded demographics, Doppler-echo, Framingham HF score, laboratories, HF readmission, and ACM with follow-up to 2167 days. Results: Diastolic dysfunction (Ddys) parameters (left atrial volume index [LAVI] > 34 ml/m2, tricuspid regurgitation [TR] velocity > 2.8 m/sec, and E/e’ > 14) had moderate sensitivity (46.2%–65.0%) for predicting HF among all phenotypes combined with DF grading having moderate predictability and additive to a clinical composite for HF prediction (AUC =.677, P < 0.0001; difference =.043, P < 0.001) for combined phenotypes. Ddys parameters and Ddys severity (2016 ASE criteria: grade II and III) were significantly associated with HF readmission for decompensated HF within 60–2167 days of follow-up (LAVI > 34 ml/m2: HR 1.56 [1.26–2.19]; E/e’ > 14: HR 1.44 [1.21–1.99]; TR > 2.8 m/sec: H1.43 [1.19–1.88]; LV Dys grade II: HR 2.12 [1.42–2.96]; LV Ddys grade III: HR 2.39 [1.57–4.82]). Conclusion: The findings of this study highlight the clinical and prognostic relevance of determining the severity of LV Ddys in patients with HF with regard to HF verification and HF readmission.
7

Imaging and modeling the cardiovascular system

Maksuti, Elira January 2016 (has links)
Understanding cardiac pumping function is crucial to guiding diagnosis, predicting outcomes of interventions, and designing medical devices that interact with the cardiovascular system.  Computer simulations of hemodynamics can show how the complex cardiovascular system is influenced by changes in single or multiple parameters and can be used to test clinical hypotheses. In addition, methods for the quantification of important markers such as elevated arterial stiffness would help reduce the morbidity and mortality related to cardiovascular disease. The general aim of this thesis work was to improve understanding of cardiovascular physiology and develop new methods for assisting clinicians during diagnosis and follow-up of treatment in cardiovascular disease. Both computer simulations and medical imaging were used to reach this goal. In the first study, a cardiac model based on piston-like motions of the atrioventricular plane was developed. In the second study, the presence of the anatomical basis needed to generate hydraulic forces during diastole was assessed in heathy volunteers. In the third study, a previously validated lumped-parameter model was used to quantify the contribution of arterial and cardiac changes to blood pressure during aging. In the fourth study, in-house software that measures arterial stiffness by ultrasound shear wave elastography (SWE) was developed and validated against mechanical testing. The studies showed that longitudinal movements of the atrioventricular plane can well explain cardiac pumping and that the macroscopic geometry of the heart enables the generation of hydraulic forces that aid ventricular filling. Additionally, simulations showed that structural changes in both the heart and the arterial system contribute to the progression of blood pressure with age. Finally, the SWE technique was validated to accurately measure stiffness in arterial phantoms. / <p>QC 20161115</p>
8

Avaliação ecocardiográfica de coelhos submetidos à infusão contínua de lidocaína sedados com midazolam /

Marques, Ana Elisa Gregui Watanabe January 2019 (has links)
Orientador: Paulo Sergio Patto dos Santos / Resumo: A lidocaína é um fármaco versátil muito utilizado na rotina clínica. No entanto, há poucos estudos que avaliam os seus efeitos sobre o coração. Para esta finalidade, a ecocardiografia transtorácica é uma ferramenta que possibilitava a avaliação das funções sistólica e diastólica em tempo real. Como este estudo, objetivou-se avaliar os efeitos da infusão contínua de lidocaína sobre as funções sistólica e diastólica do ventrículo esquerdo de coelhos hígidos sedados com midazolam. Para tanto, foram utilizados dez coelhos da raça Nova Zelândia, quatro machos e seis fêmeas, com idade de nove meses, pesando 3,2 ± 0,3 kg, sendo todos os animais sedados com midazolam na dose de 1 mg/kg pela via intramuscular e submetidos a dois tratamentos experimentais (controle e lidocaína) com intervalo mínimo de sete dias entre os tratamentos. No tratamento controle (TC) administrou-se solução de cloreto de sódio a 0,9% (0,05 mL/kg) em bolus seguida de infusão contínua na taxa de 5 mL/hora; no tratamento lidocaína (TL) administrou-se primeiramente um bolus de lidocaína a 2% sem vasoconstritor na dose de 1 mg/kg seguido de infusão contínua na taxa de 50 µg/kg/minuto, sendo mantidos os mesmos volumes administrados para ambos os tratamentos. As principais variáveis analisadas foram: frequência cardíaca (FC), pressão arterial média (PAM), índice de resistência vascular periférica (IRVP), índice cardíaco Doppler (ICD), fração de encurtamento (FEC), fração de ejeção (FEJ), velocidade da onda S′ e relaç... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Lidocaine is a versatile drug widely used in clinical practice. However, there are few studies that evaluate its effects on the heart. For this purpose, transthoracic echocardiography is a tool that allows an evaluation of the systematic and diastolic units in real time. The aim of the study was evaluate the effects of continuous rate infusion of lidocaine on systolic and diastolic functions of the left ventricle of healthy rabbits sedated with midazolam. Ten New Zealand rabbits, four males and six females, aged nine months, weighing 3.2 ± 0.3 kg were sedated with midazolam at the dose of 1 mg/kg intramuscularly and submitted to two experimental treatments (control and lidocaine) with a minimum interval of seven days. In the control treatment (CT), 0.9% sodium chloride solution (0.05 mL.kg-1 ) was administered in bolus followed by continuous infusion at a rate of 5 mL.hour-1 ; a 2% lidocaine bolus without vasoconstrictor at the dose of 1 mg.kg-1 followed by continuous infusion at the rate of 50 μg.kg-1 .minute-1 was first given in lidocaine treatment (LT). The main variables analyzed were: heart rate (HR), mean arterial pressure (MAP), peripheral vascular resistance index (PVR), Doppler cardiac index (DCI), shortening fraction (FEC), ejection fraction (EFJ), velocity of the wave S 'and relation E'/A'. All parameters were evaluated before the onset of the bolus (MB) and 20, 40 and 60 minutes after the start of continuous rate infusion (M20, M40 and M60). The studied variables ... (Complete abstract click electronic access below) / Mestre
9

Análise da função diastólica em mulheres medicadas com antraciclínicos no tratamento do câncer de mama / Evaluation of dyastolic function in breast câncer patients treated with anthracyclines

Mauricio Pimentel Costa 13 December 2011 (has links)
O Câncer de mama é um dos problemas de saúde pública mais importantes em nosso país. São estimados, para 2010, 49.400 novos casos de câncer de mama no Brasil, com um risco estimado de 51 casos a cada 100 mil mulheres. A estratégia de tratamento das pacientes com tumores de mama pode passar pelo uso de quimioterapia. A doxorrubicina é uma das drogas mais ativas para o câncer de mama, pertencendo ao grupo das antraciclinas. A família das antraciclinas apresenta como efeito colateral dano ao miocárdio que pode chegar a 36% dependendo da dose utilizada. O efeito sobre o miocárdio costuma ocorrer mais comumente durante ou logo após o último ciclo de quimioterapia podendo, entretanto ocorrer após vários anos do último ciclo de quimioterapia. O objetivo deste estudo foi analisar as alterações da função diastólica ventricular esquerda em mulheres usuárias de antraciclínicos no tratamento do câncer de mama. Realizamos um estudo prospectivo, em uma coorte de mulheres entre 18 e 69 anos, com câncer de mama e indicação de quimioterapia com doxorrubicina. Acompanhamos por período não inferior a 18 meses um grupo de 38 pacientes que cumpriram os critérios de elegibilidade. A dose de doxorrubicina utilizada variou de 50 a 60 mg/m/SC. Todos os pacientes são do sexo feminino, e portadores do tipo histológico carcinoma ductal infiltrante. Duas pacientes faleceram durante o estudo, de causa não cardíaca. Em nossa avaliação, ao final do estudo observamos que os parâmetros: dimensões do átrio esquerdo, dimensões do ventrículo esquerdo na diástole, dimensões do ventrículo esquerdo na sístole, velocidade da onda E, relação da fase de enchimento rápido pela sístole atrial, velocidade diastólica tardia do anel mitral, velocidade diastólica precoce do anel mitral, tempo de desaceleração e a relação da velocidade de enchimento rápido precoce de VE pela velocidade diastólica precoce do anel mitral demonstraram serem parâmetros de grande utilidade para seguimento da lesão cardíaca por antraciclínicos. Já o que não ocorreu com: a fração de encurtamento, fração de ejeção, volume do AE, volume do AE corrigido pela superfície corporal, velocidade diastólica tardia, tempo de relaxamento isovolumétrico, velocidade sistólica do anel mitral, que não apresentaram alterações significativas neste estudo. A análise da função diastólica utilizando o ecocardiograma mostrou ser um método eficaz, que em conjunto com a da função sistólica possibilita detectar precocemente o possível dano miocárdico, oriundo ao uso da quimioterapia com antraciclínicos, favorecendo uma intervenção terapêutica precoce e adequada. / Breast cancer is one of the most important public health of our country. It was estimated for 2010, 49,400 new cases of breast cancer in Brazil, with an estimated risk of 51 cases per 100 000 women. The treatment strategy of patients with breast tumors can pass through the use of chemotherapy. Doxorubicin is one of the most active drugs for breast cancer, belonging to the group of anthracyclines. The family of anthracyclines has as side effect myocardial damage that can reach 36% depending on the dose used. The effect on the myocardium is known to occur most commonly during or shortly after the last cycle of chemotherapy, but it could occur several years after the last cycle of chemotherapy. The objective of this study was to evaluate changes in left ventricular diastolic function in women users of anthracyclines in the treatment of breast cancer. A prospective study in a cohort of women aged 18 to 69 years, with breast cancer and indications for chemotherapy with doxorubicin. We follow a period of not less than 18 months a group of 38 patients who met the eligibility criteria. The doxorubicin dose used ranged from 50 to 60 mg / m / SC. All patients were female, and carriers of infiltrating ductal carcinoma histology. Two patients died during the study of noncardiac causes. In our view, the end of the study showed that the parameters: size of left atrium (LA), left ventricular (LV) dimensions in diastole, left ventricular dimensions in systole, E wave velocity, ratio of phase rapid filling by atrial systole, late diastolic velocity of mitral annulus, early diastolic velocity of mitral annulus, deceleration time and speed ratio early rapid filling of the LV early diastolic velocity of mitral annulus proved to be useful parameters for monitoring of cardiac injury by anthracyclines. Although this did not occur with: fractional shortening, ejection fraction, LA volume, LA volume corrected for body surface area, late diastolic velocity, isovolumetric relaxation time, mitral annular systolic velocity, which showed no significant changes in this study. The analysis of diastolic function using echocardiography proved to be an effective method, which, together with the systolic function allows early detection of possible myocardial damage, arising the use of chemotherapy with anthracycline, favoring an early and appropriate therapeutic intervention.
10

Análise da função diastólica em mulheres medicadas com antraciclínicos no tratamento do câncer de mama / Evaluation of dyastolic function in breast câncer patients treated with anthracyclines

Mauricio Pimentel Costa 13 December 2011 (has links)
O Câncer de mama é um dos problemas de saúde pública mais importantes em nosso país. São estimados, para 2010, 49.400 novos casos de câncer de mama no Brasil, com um risco estimado de 51 casos a cada 100 mil mulheres. A estratégia de tratamento das pacientes com tumores de mama pode passar pelo uso de quimioterapia. A doxorrubicina é uma das drogas mais ativas para o câncer de mama, pertencendo ao grupo das antraciclinas. A família das antraciclinas apresenta como efeito colateral dano ao miocárdio que pode chegar a 36% dependendo da dose utilizada. O efeito sobre o miocárdio costuma ocorrer mais comumente durante ou logo após o último ciclo de quimioterapia podendo, entretanto ocorrer após vários anos do último ciclo de quimioterapia. O objetivo deste estudo foi analisar as alterações da função diastólica ventricular esquerda em mulheres usuárias de antraciclínicos no tratamento do câncer de mama. Realizamos um estudo prospectivo, em uma coorte de mulheres entre 18 e 69 anos, com câncer de mama e indicação de quimioterapia com doxorrubicina. Acompanhamos por período não inferior a 18 meses um grupo de 38 pacientes que cumpriram os critérios de elegibilidade. A dose de doxorrubicina utilizada variou de 50 a 60 mg/m/SC. Todos os pacientes são do sexo feminino, e portadores do tipo histológico carcinoma ductal infiltrante. Duas pacientes faleceram durante o estudo, de causa não cardíaca. Em nossa avaliação, ao final do estudo observamos que os parâmetros: dimensões do átrio esquerdo, dimensões do ventrículo esquerdo na diástole, dimensões do ventrículo esquerdo na sístole, velocidade da onda E, relação da fase de enchimento rápido pela sístole atrial, velocidade diastólica tardia do anel mitral, velocidade diastólica precoce do anel mitral, tempo de desaceleração e a relação da velocidade de enchimento rápido precoce de VE pela velocidade diastólica precoce do anel mitral demonstraram serem parâmetros de grande utilidade para seguimento da lesão cardíaca por antraciclínicos. Já o que não ocorreu com: a fração de encurtamento, fração de ejeção, volume do AE, volume do AE corrigido pela superfície corporal, velocidade diastólica tardia, tempo de relaxamento isovolumétrico, velocidade sistólica do anel mitral, que não apresentaram alterações significativas neste estudo. A análise da função diastólica utilizando o ecocardiograma mostrou ser um método eficaz, que em conjunto com a da função sistólica possibilita detectar precocemente o possível dano miocárdico, oriundo ao uso da quimioterapia com antraciclínicos, favorecendo uma intervenção terapêutica precoce e adequada. / Breast cancer is one of the most important public health of our country. It was estimated for 2010, 49,400 new cases of breast cancer in Brazil, with an estimated risk of 51 cases per 100 000 women. The treatment strategy of patients with breast tumors can pass through the use of chemotherapy. Doxorubicin is one of the most active drugs for breast cancer, belonging to the group of anthracyclines. The family of anthracyclines has as side effect myocardial damage that can reach 36% depending on the dose used. The effect on the myocardium is known to occur most commonly during or shortly after the last cycle of chemotherapy, but it could occur several years after the last cycle of chemotherapy. The objective of this study was to evaluate changes in left ventricular diastolic function in women users of anthracyclines in the treatment of breast cancer. A prospective study in a cohort of women aged 18 to 69 years, with breast cancer and indications for chemotherapy with doxorubicin. We follow a period of not less than 18 months a group of 38 patients who met the eligibility criteria. The doxorubicin dose used ranged from 50 to 60 mg / m / SC. All patients were female, and carriers of infiltrating ductal carcinoma histology. Two patients died during the study of noncardiac causes. In our view, the end of the study showed that the parameters: size of left atrium (LA), left ventricular (LV) dimensions in diastole, left ventricular dimensions in systole, E wave velocity, ratio of phase rapid filling by atrial systole, late diastolic velocity of mitral annulus, early diastolic velocity of mitral annulus, deceleration time and speed ratio early rapid filling of the LV early diastolic velocity of mitral annulus proved to be useful parameters for monitoring of cardiac injury by anthracyclines. Although this did not occur with: fractional shortening, ejection fraction, LA volume, LA volume corrected for body surface area, late diastolic velocity, isovolumetric relaxation time, mitral annular systolic velocity, which showed no significant changes in this study. The analysis of diastolic function using echocardiography proved to be an effective method, which, together with the systolic function allows early detection of possible myocardial damage, arising the use of chemotherapy with anthracycline, favoring an early and appropriate therapeutic intervention.

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