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Uptake of Screening and Recurrence of Bicuspid Aortic Valve and Thoracic Aortic Aneurysm among At-risk SiblingsMiller, Daniel E. 29 September 2021 (has links)
No description available.
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Neo Left Main Channel Creation Using Double Stenting Alongside a Sapien 3 Aortic Valve Bioprosthesis for Left Main Coronary Obstruction Following Valve-in-Valve Transcatheter Aortic Valve Replacement: A Case Report With Review of LiteraturePatel, Apurva D., Haldis, Thomas, Al Balbissi, Kais, Paul, Timir 28 March 2018 (has links)
Transcatheter aortic valve replacement in the setting of failed surgical bioprosthesis (valve-in-valve) is a valuable option for patients with bioprosthetic aortic stenosis or regurgitation who are deemed high risk for repeat open heart surgery. Although the procedure is successful with proper preprocedural assessment, instances of left main (LM) coronary artery ostium obstruction have been documented. We present a case of LM coronary obstruction in the immediate postoperative period following implantation of a 20-mm Edwards Sapien 3 valve inside the degenerated 21-mm Mitroflow bioprosthesis stenosis, which was treated with double stenting alongside the Edwards Sapien 3 valve creating a channel (“neo left main”) that extended from mid-LM to the upper margin of the Edwards Sapien 3 valve. Although valve-in-valve in a Mitroflow degenerated bioprosthesis is a relatively safe procedure, 2 or more stents may be necessary to scaffold a channel to the coronary arteries between Edwards Sapien 3 prosthesis and aorta in the event of a coronary obstruction.
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A study of coronary flow in the presence of geometric and mechanical abnormalities in a fluid-structure interaction model of the aortic valve /Campbell, Ian, 1982- January 2007 (has links)
No description available.
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Transcatheter aortic valve implantation versus conservative management for severe aortic stenosis in real clinical practice / 実臨床における重症大動脈弁狭窄症に対する経カテーテル大動脈弁置換術と保存的治療の比較Takeji, Yasuaki 23 March 2022 (has links)
京都大学 / 新制・課程博士 / 博士(医学) / 甲第23767号 / 医博第4813号 / 新制||医||1056(附属図書館) / 京都大学大学院医学研究科医学専攻 / (主査)教授 大鶴 繁, 教授 小西 靖彦, 教授 森田 智視 / 学位規則第4条第1項該当 / Doctor of Medical Science / Kyoto University / DFAM
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Comparação da função diastólica entre o pré e pós-operatório de pacientes portadores de estenose aórtica ou insuficiência aórtica, baseados em dados bioquímicos e ecocardiográficos / Comparing after and before aortic valve replacement diastolic function in patients with aortic stenosis(AS) or aortic regurgitation(AR)Boer, Berta Paula Napchan 09 February 2010 (has links)
INTRODUÇÃO: Avaliação da função diastólica de pacientes portadores de estenose ou insuficiência aórtica submetidos à troca valvar. OBJETIVOS: Avaliação da função diastólica através da análise do NTpró-BNP como método não invasivo para caracterização da insuficiência cardíaca diastólica, comparando com os dados ecocardiográficos através do Doppler Pulsado em Fluxo Mitral, Doppler Pulsado em Veias Pulmonares e Doppler Tecidual em portadores de IAO e EAO. MÉTODOS: Foram avaliados 63 pacientes, 32 pacientes com IAO (25 pacientes do sexo masculino e 7 do sexo feminino), 31 pacientes com EAO (11 pacientes do sexo masculino e 20 pacientes do sexo feminino). As variáveis foram comparadas na média entre os pacientes portador de IAO e EAO no pré e pós-operatório. RESULTADOS: A idade dos pacientes variou de 21 a 81 com média de 55 anos. Observa-se diferença quanto à média de idades entre as diferentes patologias (t-Student p< 0,0001). Os pacientes com IAO apresentam uma média de idade igual a 45,7±14,3 com variação entre 21 e 79 anos e os pacientes com EAO apresentam uma média de idade igual a 61,5±14,7 com variação entre 21 e 81 anos. Na IAO em relação à disfunção diastólica tivemos os seguintes dados com significância estatística do pré para o pós-operatório (6 meses): TRIV (p=0,0011), diferença entre Tempo de onda A mitral e onda A pulmonar (p=0,0097), Vol. Sistólico de AE (p=0,0019), Vol Sistólico de AE Indexado (0,0011), Vol. Diastólico de AE (p=0,0110), DDVE (p<0,0001), DSVE (p<0,0001), VSF (p<0,0001), VDF (p<0,0001), Massa Indexada de VE (p<0,0001) e Relação Volume/Massa do VE (p<0,0001). Na EAO em relação à disfunção diastólica tivemos os seguintes dados com significância estatística do pré para o pós-operatório (6 meses): E/E (p=0,0379), TRIV (p=0,0072), diferença entre o tempo de onda A mitral e tempo de onda A pulmonar (p=0,0176), Vol sistólico de AE(p=0,0242), Vol. Sistólico de AE indexado (p=0,0237), FEdeAE (p=0,0339), DDVE (p=0,0002), DSVE (p=0,0085), VDF (p=0,0194), Massa Indexada de VE (p<0,0001) e Relação Volume/Massa de VE(p<0,0001). O NTpró-BNP se correlacionou positivamente com os diversos graus de disfunção diastólica tanto no pré como pós-operatório CONCLUSÃO: Foram verificados no estudo da função diastólica variação com significância estatística tanto na IAO como na EAO na comparação do pré e o pós-operatório. Da mesma forma notamos variação do NT-proBNP com correlação com as variáveis ecocardiográficas que caracterizam a disfunção diastólica. / INTRODUCTION: Assessment of diastolic function in patients with aortic stenosis or aortic regurgitation waiting for aortic valve replacement. OBJECTIVE: Assesment of diastolic function with Doppler methods:Doppler signals from transvalvar mitral inflow, tissue Doppler imaging (TDI) and Doppler in pulmonary veins(DPV) correlating with serum brain peptide natriuretic (NTproNP) before and 6 months after aortic valve replacement (AVR). METHODS: We have analyzed 63 patients, 32 with AR (25 males and 7 females), 31 AS (11 males and 20 females).The indices were compared with AS and AR before and after AVR. RESULTS: The ages of patients ranged from 21 to 81 mean age was 55 years old.We have seen difference between mean age of AS and AR (t-Student-p<0.0001). Patients with AR have had mean age 45.67 plus/minus 14.28, range 21 to 79 years old and patients with AS have had mean age 61.50 plus/minus 14.72, range 21 to 81 years old. The patients who had AR the indices showed differences: Isovolumetric Relaxation Time IRT(p=0.0011), Diference between the pulmonary A wave duration and mitral A duration (p=0.0097), Left Atrial Systolic Volume (p=0.0019), Left Atrial Systolic Volume Index(p=0.0011), Left Atrial Diastolic Volume (p=0.0110), Left Ventricular Diastolic Diameter (p<0.0001), Left Ventricular Systolic Diameter (p<0.0001), End Systolic Volume (p<0.0001), End Diastolic Volume (p<0.0001), Left Ventricular Mass Index (p<0.0001) and Left Ventricular Volume and Left Ventricular Mass Index ratio (p<0.0001). Analyzing patients with AS the indices who showed differences: (The ratio of mitral velocity to early diastolic velocity of the mitral annulus) E/E (p=0.0379)(Isovolumetric Relaxation Time)(p=0.0072) IRT, Diference between the pulmonary A wave duration and mitral A duration (p=0.0176), Left Atrial Sistolic Volume (p=0.0242), Left Atrial Systolic Volume Index (p=0.0237), Left Atrial Ejection Fraction (p=0.0339) Left Ventricular Diastolic Diameter (p=0.0002), Left Ventricular Systolic Diameter (p=0.0085), End Diastolic Volume (LVEDV) (p=0.0194), Left ventricular Mass Index(p<0.0001), Left Ventricular Volume and Mass Index Ratio (p<0.0001). CONCLUSIONS: As we studied diastolic function we have verified significant statistic variation in aortic regurgitation and aortic stenosis comparing before and after aortic valve replacement. Likewise we have seen there is correlation between NTproBNP and echocardiographic variables that show diastolic dysfunction.
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Pathogenesis of calcific aortic valve diseaseNäpänkangas, J. (Juha) 08 October 2019 (has links)
Abstract
Calcific aortic valve disease (CAVD) represents a disease spectrum, ranging from mild aortic valve sclerosis to severe obstructive aortic stenosis (AS), associated with a high risk of myocardial infarction and cardiovascular death. It is a common disease in the Western countries, and with their aging populations, its prevalence is likely to increase.
Today, CAVD is recognized as an actively regulated disease. Mechanical stress and endothelial injury are the initiating factors, followed by lipid accumulation and oxidation, leading to inflammation, fibrosis and calcification. Ultimately, the progressive calcification hinders the normal valvular function and obstructs the flow of blood through the valve. The only effective treatment for symptomatic AS is aortic valve replacement. The trials with pharmacological treatments, mainly with anti-atherosclerotic drugs, have not been successful in slowing the progression of the disease.
This study was aimed to identify differentially expressed transcripts, and molecular markers taking part in the pathophysiology behind CAVD. In particular, factors related to the renin-angiotensin system, and the apelin – APJ pathway, were investigated during the development of CAVD. In addition, the expressions of granzymes and perforin, as well as podoplanin, were studied in different stages of CAVD.
It was demonstrated that these molecules are expressed in aortic valves and dysregulated in AS. These results can help to clarify the mechanisms driving CAVD, thus being potential targets for pharmacological therapy. Furthermore, the studied molecules may reflect the stage and possible subgroups of CAVD. / Tiivistelmä
Aorttaläpän ahtauma edustaa tautijatkumoa, joka alkaa lievästä aorttaläpän paksuuntumisesta eli aorttaskleroosista ja jatkuu vaikeaan aorttaläpän kalkkeutuneeseen ahtaumaan eli aorttastenoosiin, johon liittyy korkea sydäninfarktin ja sydän- ja verisuonitatutiperäisen kuoleman riski. Aorttaläpän ahtauma on yleinen tauti länsimaissa, ja väestön ikääntyessä sen esiintyvyys on luultavimmin lisääntymässä.
Nykyään aorttaläpän ahtauman tiedetään olevan aktiivisesti säädelty tauti. Mekaaninen rasitus ja endoteelivaurio käynnistävät tautiprosessin, läppäkudokseen kertyy lipidejä ja ne hapettuvat, mikä johtaa tulehdukseen, sidekudoksen lisääntymiseen ja kalkkeutumiseen. Lopulta etenevä kalkkeutuminen heikentää läpän normaalia toimintaa ja estää veren normaalia virtausta sydämestä aorttaan. Ainoa tehokas hoito oireiseen aorttastenoosiin on aorttaläpän korvausleikkaus. Lääkehoitoina on kokeiltu erityisesti ateroskleroosin hoitoon käytettäviä lääkkeitä, mutta niillä ei ole onnistuttu estämään taudin etenemistä.
Tässä väitöskirjatyössä tutkittiin molekyylejä ja biokemiallisia reittejä, jotka liittyvät reniini-angiotensiinijärjestelmään ja apeliini-APJ-reittiin. Lisäksi tutkittiin grantsyymien ja perforiinin sekä podoplaniinin ilmentymistä aorttaläpän ahtauman eri kehitysvaiheissa.
Tulosten perusteella näitä tekijöitä ilmennetään aorttaläpässä ja niiden määrä on muuttunut kalkkeutuneessa läpässä. Tulokset auttavat osaltaan ymmärtämään aorttaläpän ahtaumaan ja kalkkeutumiseen johtavia mekanismeja, joita voidaan hyödyntää uusia lääkehoidon kohteita suunniteltaessa. Tutkitut molekulaariset tekijät voivat kuvastaa aortan ahtaumataudin vaiheita ja mahdollisia alaryhmiä.
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Comparação da sobrevida entre indivíduos submetidos à cirurgia para substituição valvar aórtica utilizando próteses mecânicas ou biológicas em uma coorte brasileiraAlmeida, Adriana Silveira de January 2010 (has links)
Este estudo avalia mortalidade, eventos hemorrágicos e reoperação em pacientes submetidos à cirurgia para troca valvar aórtica utilizando substituto biológico ou mecânico, com poder de relevância na seleção do tipo da prótese. Foram selecionados, randomicamente, 301 pacientes submetidos à cirurgia para troca valvar aórtica entre 1990 e 2005, com seguimento máximo de 20 anos. A sobrevivência em 5, 10 e 15 anos após cirurgia utilizando substituto mecânico foi de 83,9%, 75,4% e 60,2% e, para substituto biológico, foi de 89,3%, 70,4% e 58,4%, respectivamente (p=0,939). Os fatores associados com o óbito foram: idade, obesidade, doença pulmonar, arritmias, eventos hemorrágicos e insuficiência valvar aórtica. A probabilidade livre de reoperação desses pacientes em 5, 10 e 15 anos após cirurgia utilizando substituto mecânico foi de 97,9%, 95,8% e 95,8% e, para bioprótese, foi de 94,6%, 91,0% e 83,3%, respectivamente (p=0,057). Os fatores associados com reoperação foram: insuficiência renal, endocardite de prótese e idade. A probabilidade livre de eventos hemorrágicos em 5, 10 e 15 anos após cirurgia utilizando substituto mecânico foi de 94,5%, 91,7% e 91,7% e, para bioprótese, foi de 98,6%, 97,8% e 97,8%, respectivamente (p=0,047). Os fatores associados com eventos hemorrágicos foram: insuficiência renal e prótese mecânica. Os autores concluíram que: 1) a mortalidade foi estatisticamente semelhante entre os grupos; 2) as características basais dos pacientes foram os maiores determinantes de mortalidade tardia após a cirurgia; 3) houve uma tendência à reoperação para o grupo com bioprótese; 4) pacientes com prótese mecânica tiveram mais eventos hemorrágicos ao longo do tempo; 5) os dados encontrados no presente estudo são concordantes com a literatura atual. / This paper evaluates mortality, bleeding events and reoperation in patients subjected to surgery for replacement of the aortic valve using a biological or a mechanical substitute, where selection of the type of prosthesis is relevant. Three hundred and one patients who had been subjected to aortic valve replacement surgery between 1990 and 2005, with a maximum follow-up period of 20 years, have been randomly selected. Survival at 5, 10 and 15 years after surgery using a mechanical substitute was 83.9%, 75.4% and 60.2% and, for a biological substitute, was 89.3%, 70.4% and 58.4%, respectively (p=0.939). Factors associated with death were: age, obesity, pulmonary disease, arrhythmia, bleeding and aortic valve failure. The probability free of reoperation for these patients at 5, 10 and 15 years after surgery using a mechanical substitute was 97.9%, 95.8% and 95.8% and, for those using bioprostheses, was 94.6%, 91.0% and 83.3%, respectively (p=0.057). Factors associated with reoperation were: renal failure, prosthesis endocarditis and age. The probability free of bleeding events at 5, 10 and 15 years after surgery using the mechanical substitute was 94.5%, 91.7% and 91.7% and, for bioprostheses, was 98.6%, 97.8% and 97.8%, respectively (p=0.047). Factors associated with bleeding events were: renal failure and mechanical prostheses. The authors have concluded that: 1) mortality was statistically similar in the groups; 2) patient characteristics at baseline were a major determinant of late mortality after surgery; 3) there was a tendency toward reoperation in the bioprostheses group; 4) patients using a mechanical prosthesis had more bleeding events as time passed; 5) the data presented in this paper is in accordance with current literature.
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Comparação da sobrevida entre indivíduos submetidos à cirurgia para substituição valvar aórtica utilizando próteses mecânicas ou biológicas em uma coorte brasileiraAlmeida, Adriana Silveira de January 2010 (has links)
Este estudo avalia mortalidade, eventos hemorrágicos e reoperação em pacientes submetidos à cirurgia para troca valvar aórtica utilizando substituto biológico ou mecânico, com poder de relevância na seleção do tipo da prótese. Foram selecionados, randomicamente, 301 pacientes submetidos à cirurgia para troca valvar aórtica entre 1990 e 2005, com seguimento máximo de 20 anos. A sobrevivência em 5, 10 e 15 anos após cirurgia utilizando substituto mecânico foi de 83,9%, 75,4% e 60,2% e, para substituto biológico, foi de 89,3%, 70,4% e 58,4%, respectivamente (p=0,939). Os fatores associados com o óbito foram: idade, obesidade, doença pulmonar, arritmias, eventos hemorrágicos e insuficiência valvar aórtica. A probabilidade livre de reoperação desses pacientes em 5, 10 e 15 anos após cirurgia utilizando substituto mecânico foi de 97,9%, 95,8% e 95,8% e, para bioprótese, foi de 94,6%, 91,0% e 83,3%, respectivamente (p=0,057). Os fatores associados com reoperação foram: insuficiência renal, endocardite de prótese e idade. A probabilidade livre de eventos hemorrágicos em 5, 10 e 15 anos após cirurgia utilizando substituto mecânico foi de 94,5%, 91,7% e 91,7% e, para bioprótese, foi de 98,6%, 97,8% e 97,8%, respectivamente (p=0,047). Os fatores associados com eventos hemorrágicos foram: insuficiência renal e prótese mecânica. Os autores concluíram que: 1) a mortalidade foi estatisticamente semelhante entre os grupos; 2) as características basais dos pacientes foram os maiores determinantes de mortalidade tardia após a cirurgia; 3) houve uma tendência à reoperação para o grupo com bioprótese; 4) pacientes com prótese mecânica tiveram mais eventos hemorrágicos ao longo do tempo; 5) os dados encontrados no presente estudo são concordantes com a literatura atual. / This paper evaluates mortality, bleeding events and reoperation in patients subjected to surgery for replacement of the aortic valve using a biological or a mechanical substitute, where selection of the type of prosthesis is relevant. Three hundred and one patients who had been subjected to aortic valve replacement surgery between 1990 and 2005, with a maximum follow-up period of 20 years, have been randomly selected. Survival at 5, 10 and 15 years after surgery using a mechanical substitute was 83.9%, 75.4% and 60.2% and, for a biological substitute, was 89.3%, 70.4% and 58.4%, respectively (p=0.939). Factors associated with death were: age, obesity, pulmonary disease, arrhythmia, bleeding and aortic valve failure. The probability free of reoperation for these patients at 5, 10 and 15 years after surgery using a mechanical substitute was 97.9%, 95.8% and 95.8% and, for those using bioprostheses, was 94.6%, 91.0% and 83.3%, respectively (p=0.057). Factors associated with reoperation were: renal failure, prosthesis endocarditis and age. The probability free of bleeding events at 5, 10 and 15 years after surgery using the mechanical substitute was 94.5%, 91.7% and 91.7% and, for bioprostheses, was 98.6%, 97.8% and 97.8%, respectively (p=0.047). Factors associated with bleeding events were: renal failure and mechanical prostheses. The authors have concluded that: 1) mortality was statistically similar in the groups; 2) patient characteristics at baseline were a major determinant of late mortality after surgery; 3) there was a tendency toward reoperation in the bioprostheses group; 4) patients using a mechanical prosthesis had more bleeding events as time passed; 5) the data presented in this paper is in accordance with current literature.
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Comparação da sobrevida entre indivíduos submetidos à cirurgia para substituição valvar aórtica utilizando próteses mecânicas ou biológicas em uma coorte brasileiraAlmeida, Adriana Silveira de January 2010 (has links)
Este estudo avalia mortalidade, eventos hemorrágicos e reoperação em pacientes submetidos à cirurgia para troca valvar aórtica utilizando substituto biológico ou mecânico, com poder de relevância na seleção do tipo da prótese. Foram selecionados, randomicamente, 301 pacientes submetidos à cirurgia para troca valvar aórtica entre 1990 e 2005, com seguimento máximo de 20 anos. A sobrevivência em 5, 10 e 15 anos após cirurgia utilizando substituto mecânico foi de 83,9%, 75,4% e 60,2% e, para substituto biológico, foi de 89,3%, 70,4% e 58,4%, respectivamente (p=0,939). Os fatores associados com o óbito foram: idade, obesidade, doença pulmonar, arritmias, eventos hemorrágicos e insuficiência valvar aórtica. A probabilidade livre de reoperação desses pacientes em 5, 10 e 15 anos após cirurgia utilizando substituto mecânico foi de 97,9%, 95,8% e 95,8% e, para bioprótese, foi de 94,6%, 91,0% e 83,3%, respectivamente (p=0,057). Os fatores associados com reoperação foram: insuficiência renal, endocardite de prótese e idade. A probabilidade livre de eventos hemorrágicos em 5, 10 e 15 anos após cirurgia utilizando substituto mecânico foi de 94,5%, 91,7% e 91,7% e, para bioprótese, foi de 98,6%, 97,8% e 97,8%, respectivamente (p=0,047). Os fatores associados com eventos hemorrágicos foram: insuficiência renal e prótese mecânica. Os autores concluíram que: 1) a mortalidade foi estatisticamente semelhante entre os grupos; 2) as características basais dos pacientes foram os maiores determinantes de mortalidade tardia após a cirurgia; 3) houve uma tendência à reoperação para o grupo com bioprótese; 4) pacientes com prótese mecânica tiveram mais eventos hemorrágicos ao longo do tempo; 5) os dados encontrados no presente estudo são concordantes com a literatura atual. / This paper evaluates mortality, bleeding events and reoperation in patients subjected to surgery for replacement of the aortic valve using a biological or a mechanical substitute, where selection of the type of prosthesis is relevant. Three hundred and one patients who had been subjected to aortic valve replacement surgery between 1990 and 2005, with a maximum follow-up period of 20 years, have been randomly selected. Survival at 5, 10 and 15 years after surgery using a mechanical substitute was 83.9%, 75.4% and 60.2% and, for a biological substitute, was 89.3%, 70.4% and 58.4%, respectively (p=0.939). Factors associated with death were: age, obesity, pulmonary disease, arrhythmia, bleeding and aortic valve failure. The probability free of reoperation for these patients at 5, 10 and 15 years after surgery using a mechanical substitute was 97.9%, 95.8% and 95.8% and, for those using bioprostheses, was 94.6%, 91.0% and 83.3%, respectively (p=0.057). Factors associated with reoperation were: renal failure, prosthesis endocarditis and age. The probability free of bleeding events at 5, 10 and 15 years after surgery using the mechanical substitute was 94.5%, 91.7% and 91.7% and, for bioprostheses, was 98.6%, 97.8% and 97.8%, respectively (p=0.047). Factors associated with bleeding events were: renal failure and mechanical prostheses. The authors have concluded that: 1) mortality was statistically similar in the groups; 2) patient characteristics at baseline were a major determinant of late mortality after surgery; 3) there was a tendency toward reoperation in the bioprostheses group; 4) patients using a mechanical prosthesis had more bleeding events as time passed; 5) the data presented in this paper is in accordance with current literature.
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Comparação da função diastólica entre o pré e pós-operatório de pacientes portadores de estenose aórtica ou insuficiência aórtica, baseados em dados bioquímicos e ecocardiográficos / Comparing after and before aortic valve replacement diastolic function in patients with aortic stenosis(AS) or aortic regurgitation(AR)Berta Paula Napchan Boer 09 February 2010 (has links)
INTRODUÇÃO: Avaliação da função diastólica de pacientes portadores de estenose ou insuficiência aórtica submetidos à troca valvar. OBJETIVOS: Avaliação da função diastólica através da análise do NTpró-BNP como método não invasivo para caracterização da insuficiência cardíaca diastólica, comparando com os dados ecocardiográficos através do Doppler Pulsado em Fluxo Mitral, Doppler Pulsado em Veias Pulmonares e Doppler Tecidual em portadores de IAO e EAO. MÉTODOS: Foram avaliados 63 pacientes, 32 pacientes com IAO (25 pacientes do sexo masculino e 7 do sexo feminino), 31 pacientes com EAO (11 pacientes do sexo masculino e 20 pacientes do sexo feminino). As variáveis foram comparadas na média entre os pacientes portador de IAO e EAO no pré e pós-operatório. RESULTADOS: A idade dos pacientes variou de 21 a 81 com média de 55 anos. Observa-se diferença quanto à média de idades entre as diferentes patologias (t-Student p< 0,0001). Os pacientes com IAO apresentam uma média de idade igual a 45,7±14,3 com variação entre 21 e 79 anos e os pacientes com EAO apresentam uma média de idade igual a 61,5±14,7 com variação entre 21 e 81 anos. Na IAO em relação à disfunção diastólica tivemos os seguintes dados com significância estatística do pré para o pós-operatório (6 meses): TRIV (p=0,0011), diferença entre Tempo de onda A mitral e onda A pulmonar (p=0,0097), Vol. Sistólico de AE (p=0,0019), Vol Sistólico de AE Indexado (0,0011), Vol. Diastólico de AE (p=0,0110), DDVE (p<0,0001), DSVE (p<0,0001), VSF (p<0,0001), VDF (p<0,0001), Massa Indexada de VE (p<0,0001) e Relação Volume/Massa do VE (p<0,0001). Na EAO em relação à disfunção diastólica tivemos os seguintes dados com significância estatística do pré para o pós-operatório (6 meses): E/E (p=0,0379), TRIV (p=0,0072), diferença entre o tempo de onda A mitral e tempo de onda A pulmonar (p=0,0176), Vol sistólico de AE(p=0,0242), Vol. Sistólico de AE indexado (p=0,0237), FEdeAE (p=0,0339), DDVE (p=0,0002), DSVE (p=0,0085), VDF (p=0,0194), Massa Indexada de VE (p<0,0001) e Relação Volume/Massa de VE(p<0,0001). O NTpró-BNP se correlacionou positivamente com os diversos graus de disfunção diastólica tanto no pré como pós-operatório CONCLUSÃO: Foram verificados no estudo da função diastólica variação com significância estatística tanto na IAO como na EAO na comparação do pré e o pós-operatório. Da mesma forma notamos variação do NT-proBNP com correlação com as variáveis ecocardiográficas que caracterizam a disfunção diastólica. / INTRODUCTION: Assessment of diastolic function in patients with aortic stenosis or aortic regurgitation waiting for aortic valve replacement. OBJECTIVE: Assesment of diastolic function with Doppler methods:Doppler signals from transvalvar mitral inflow, tissue Doppler imaging (TDI) and Doppler in pulmonary veins(DPV) correlating with serum brain peptide natriuretic (NTproNP) before and 6 months after aortic valve replacement (AVR). METHODS: We have analyzed 63 patients, 32 with AR (25 males and 7 females), 31 AS (11 males and 20 females).The indices were compared with AS and AR before and after AVR. RESULTS: The ages of patients ranged from 21 to 81 mean age was 55 years old.We have seen difference between mean age of AS and AR (t-Student-p<0.0001). Patients with AR have had mean age 45.67 plus/minus 14.28, range 21 to 79 years old and patients with AS have had mean age 61.50 plus/minus 14.72, range 21 to 81 years old. The patients who had AR the indices showed differences: Isovolumetric Relaxation Time IRT(p=0.0011), Diference between the pulmonary A wave duration and mitral A duration (p=0.0097), Left Atrial Systolic Volume (p=0.0019), Left Atrial Systolic Volume Index(p=0.0011), Left Atrial Diastolic Volume (p=0.0110), Left Ventricular Diastolic Diameter (p<0.0001), Left Ventricular Systolic Diameter (p<0.0001), End Systolic Volume (p<0.0001), End Diastolic Volume (p<0.0001), Left Ventricular Mass Index (p<0.0001) and Left Ventricular Volume and Left Ventricular Mass Index ratio (p<0.0001). Analyzing patients with AS the indices who showed differences: (The ratio of mitral velocity to early diastolic velocity of the mitral annulus) E/E (p=0.0379)(Isovolumetric Relaxation Time)(p=0.0072) IRT, Diference between the pulmonary A wave duration and mitral A duration (p=0.0176), Left Atrial Sistolic Volume (p=0.0242), Left Atrial Systolic Volume Index (p=0.0237), Left Atrial Ejection Fraction (p=0.0339) Left Ventricular Diastolic Diameter (p=0.0002), Left Ventricular Systolic Diameter (p=0.0085), End Diastolic Volume (LVEDV) (p=0.0194), Left ventricular Mass Index(p<0.0001), Left Ventricular Volume and Mass Index Ratio (p<0.0001). CONCLUSIONS: As we studied diastolic function we have verified significant statistic variation in aortic regurgitation and aortic stenosis comparing before and after aortic valve replacement. Likewise we have seen there is correlation between NTproBNP and echocardiographic variables that show diastolic dysfunction.
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