Correlation between left atrial strain and left ventricular diastolic function in hypertensive patients / 中南大学学报(医学版)

OBJECTIVES@#Early detection of asymptomatic diastolic dysfunction is essential to prevent the development of heart failure in hypertensive patients. Current studies suggest that left atrial strain contributes to the evaluation of left ventricular diastolic function, but there are fewer studies on the correlation between left atrial strain and diastolic function in hypertensive patients. In this study, we applied a two-dimensional speckle tracking technique to evaluate the changes in left atrial strain in hypertensive patients, and to investigate the relationship between left atrial strain and left ventricular diastolic function.@*METHODS@#A total of 82 hypertensive patients who were visited the Department of Cardiology at the Third Xiangya Hospital of Central South University from July 2021 to January 2022, were enrolled for this study, and 59 healthy subjects served as a control group. According to the number of left ventricular diastolic function indexes recommended by the 2016 American Society of Echocardiography Diastolic Function Guidelines (mitral annular e´ velocity: Septal e´<7 cm/s, lateral e´<10 cm/s, E/e´ ratio>14, left atrial volume index>34 mL/m2, peak tricuspid regurgitation velocity>2.8 m/s), the hypertensive patients were divided into 3 groups: Group Ⅰ (0 index, n=36 ), Group Ⅱ (1 index, n=39), and Group Ⅲ (2 indexes, n=7). Two-dimensional speckle tracking technique was used to measure left atrial reservoir strain (LASr), conduit strain, and contraction strain, and to analyze the correlation between left atrial strain and left ventricular diastolic function in hypertensive patients.@*RESULTS@#The LASr, left atrial conduit strain (LAScd), and LASr/(E/septal e´) of the hypertension group were lower than those of the control group, and E/LASr was higher than that of the control group. There was no significant difference in left atrium volume index between the 2 groups (P>0.05). Compared with Group Ⅰ, LASr, LAScd, and LASr/(E/septal e´) were decreased in Group Ⅱ and Group Ⅲ, LASr/(E/septal e´) was also decreased in Group Ⅲ compared with Group Ⅱ (all P<0.05). Compared with Group Ⅰ, E/LASr was increased in Group Ⅲ. LASr was positively correlated with septal e´, lateral e´, E, and E/A, and negatively correlated with E/septal e´.@*CONCLUSIONS@#The changes of left atrial function in patients with early hypertension are earlier than those of left atrial structure. Left atrial strain and its combination with conventional ultrasonographic indices [LASr/(E/septal e´)] of diastolic function are potentially useful in assessing left ventricular diastolic function in hypertensive patients.

Effect of ulinastatin injection on left ventricular diastolic function in patients with sepsis / 中华急诊医学杂志

Objective:To investigate the effect of ulinastatin injection on left ventricular diastolic function and prognosis in patients with sepsis.Methods:A total of 100 patients with sepsis admitted to the Intensive Care Unit from January 2021 to March 2022 were selected. According to the random number table, they were randomly (random number) divided into the control group (conventional treatment) and experimental group (conventional treatment + ulinastatin injection). The baseline data on admission were compared between the two groups. The echocardiographic indexes [mitral peak velocity of early filling/early diastolic mitral annular velocity (E/e'), early diastolic mitral annular velocity (e'), mitral peak velocity of early filling/ mitral peak velocity of late filling (E/A), and tricuspid regurgitation rate (TRV)], myocardial damage-related and cardiac function-related indicators [troponin I (cTnI), N terminal pro B type natriuretic peptide (NTproBNP)] and inflammation-related indicators [C-reaction protein (CRP), procalcitonin (PCT), erythrocyte sedimentation rate (ESR)], length of ICU stay, duration of infection control, duration of vasoactive drug use and 28-day mortality were observed and compared between the two groups on admission and 7 days after treatment.Results:On the 7th day after treatment, the levels of e 'and E/A in the experimental group were significantly higher than those in the control group, and the levels of E/e', TRV, cTnI, NTproBNP, CRP and PCT were significantly decreased ( P<0.05). There were no significant differences in duration of infection control and duration of vasoactive drug use between the experimental group and the control group ( P<0.05), but the length of ICU stay was shorter and 28-day mortality was significantly lower in the experimental group than in the control group ( P<0.05). Conclusions:Ulinastatin can reduce the degree of inflammatory response, relieve myocardial injury, improve left ventricular diastolic function, and reduce the length of ICU stay and 28-day mortality in patients with sepsis.

Cardiac and metabolic effects of Bariatric Surgery among obese patients in a Malaysian Tertiary Hospital: A 6-month prospective cohort study / Journal of the ASEAN Federation of Endocrine Societies

Objective@#Obesity is known to be associated with left ventricular diastolic dysfunction due to its effect on blood pressure and glucose tolerance. We aimed to investigate whether weight loss after bariatric surgery might improve diastolic dysfunction through in-depth echocardiographic examination.@*Methodology@#We recruited twenty-eight patients who were about to undergo bariatric surgery by purposive sampling. They underwent echocardiography at baseline and 6 months after surgery with a focus on diastolic function measurements and global longitudinal strain (GLS). They also had fasting serum lipid and glucose measurements pre- and post-surgery.@*Results@#The mean weight loss after surgery was 24.1 kg. Out of the 28 subjects, fifteen (54%) initially had diastolic dysfunction before surgery. Only two had persistent diastolic dysfunction 6 months after surgery. The mean indexed left atrial volume 6 months post-surgery was 27.1 from 32 ml/m2 prior to surgery. The average E/e’ is 11.78 post-surgery from 13.43 pre-surgery. The left ventricular GLS became (-)25.7% after surgery from (-)21.2% prior to surgery. Their post-surgery fasting serum lipid and glucose levels also showed significant improvement.@*Conclusion@#Our study reinforced the existing evidence that bariatric surgery significantly improved echocardiographic parameters of diastolic function and left ventricular global longitudinal strain, along with various metabolic profiles.

Sweroside Effectively Protects Against Ischemia/Reperfusion Injury by Regulating Excitation-contraction Coupling / 中国实验方剂学杂志

ObjectiveTo explore the effect of sweroside on the protection of cardiac systolic/diastolic function during ischemia/reperfusion （I/R） injury. MethodTwenty-four healthy male SD rats were randomly divided into control group， model group， 10 μmol·L-1 sweroside group and 1 μmol·L-1 digoxin group. The I/R injury was modeled by Langendorff and ligation of the left anterior descending coronary artery. The infarct size in each group was measured by 2，3，5-triphenyltetrazolium chloride （TTC） staining and hemodynamic parameters such as left ventricular diastolic pressure （LVDP）， left ventricular end-diastolic pressure （LVEDP）， left ventricular end-systolic pressure （LVESP）， maximum rate of rising of left ventricular pressure （+dp/dtmax） and maximum rate of decreasing of left ventricular pressure （-dp/dtmax） of rat isolated heart were detected by Powerlab. In addition， neonatal rat cardiomyocytes （NRCMs） were isolated and randomly divided into control group， model group， 1 μmol·L-1 sweroside group and 10 μmol·L-1 sweroside group. Hypoxia/reoxygenation （H/R） injury model was established. Cardiac systolic function and calcium transients were examined by multi-functional cell imaging analyzer and laser confocal microscope. Furthermore， real-time polymerase chain reaction（Real-time PCR） was used to verify the mRNA expression of excitation-contraction coupling genes such as L-type calcium channel （Cacnb2）， cytochrome c oxidase subunit 6A2 （Cox6a2）， troponin （Tnnc1， Tnni3， Tnnt2）， actin （Actc1）， and myosin （Myh6， Myl2， Myl4） according to the results of previous transcriptome sequencing and literature investigation. Differentially expressed genes were subjected to cluster analysis. ResultCompared with the conditions in the control group， increased cardiac infarction size （P<0.01） and LVEDP （P<0.01） and decreased LVDP （P<0.01） and LVESP （P<0.05） were observed in the model group， with +dp/dtmax of increasing trend while -dp/dtmax decreasing. Moreover， the cell viability， heart rate and contraction amplitude of NRCMs was reduced （P<0.01）， while the contraction duration， time to peak and relaxation time was elevated （P<0.01） in the model group. Interestingly， sweroside could reverse these indicators （P<0.05）. In addition， the expression of Cacnb2， Cox6a2， Tnnc1， Tnni3， Tnnt2， Actc1， and Myh6， Myl2， and Myl4 was down-regulated in the model group （P<0.05， P<0.01）， but sweroside could up-regulate the expression of the above genes （P<0.05）. ConclusionSweroside effectively regulated Ca2+ level in NRCMs， enhanced cardiac systolic function， and protected against H/R injury by regulating excitation-contraction coupling.

Correlação ecocardiográfica da função diastólica do ventrículo direito com idade e gênero em indivíduos com função sistólica preservada / Echocardiographic correlation between right ventricular diastolic function and age and gender in subjects with preserved systolic function

Introdução: As funções sistólica e diastólica do ventrículo direito influenciam no desfecho de doenças cardiovasculares. A avaliação sistemática das dimensões e da função das câmaras direitas, de acordo com sexo e idade, não é uniformemente realizada. Objetivo: Avaliar, ao ecocardiograma transtorácico, a correlação da função diastólica do ventrículo direito com idade e sexo, em uma população ambulatorial variada, com função sistólica dos ventrículos esquerdo e direito preservada. Métodos: Estudo observacional, transversal. Foram selecionados 97 pacientes, 61,5 ± 12,5 anos, sendo 56 mulheres. Foram avaliadas as seguintes medidas da função diastólica do ventrículo direito: velocidade de pico das ondas E e A, relação E/A, tempos de aceleração e desaceleração de onda E, integral velocidade-tempo da onda E, integral velocidade-tempo da onda A, além da pressão sistólica de artéria pulmonar, velocidade do refluxo tricúspide, diâmetro da veia cava inferior e volume do átrio direito. Resultados: Ocorreu redução da onda E com o aumento da idade (coeficiente de correlação de Pearson de -0,30; p=0,003) e da relação E/A (coeficiente de correlação de Pearson de -0,21; p=0,035). Houve associação positiva e significativa entre idade e os resultados das variáveis pressão sistólica de artéria pulmonar (coeficiente de correlação de Pearson de 0,40; p=0,004) e velocidade do refluxo tricúspide (coeficiente de correlação de Pearson de 0,36; p=0,008). Não houve diferença significativa na comparação entre os sexos em relação a variáveis ecocardiográficas. Conclusão: O presente estudo mostrou impacto da idade nos índices de função diastólica do ventrículo direito em indivíduos com função sistólica biventricular preservada, embora ainda com valores dentro da normalidade. O estudo não evidenciou diferença significativa entre os sexos em relação a função diastólica do ventrículo direito. (AU)

Introduction: Right ventricular (RV) systolic and diastolic functions influence the outcomes of cardiovascular diseases. However, right chamber size and function have not been uniformly assessed by age and sex. Objective: To evaluate RV diastolic function by age and sex in an outpatient population with preserved left ventricular (LV) and RV systolic function using transthoracic echocardiography. Method: This observational cross-sectional study included a total of 97 patients (56 women) aged 61.5 ± 12.5 years. The assessed parameters included RV E/A ratio; peak E-wave and A-wave velocity, E-wave acceleration and deceleration time, and integral E-wave and A-wave velocitytime; and pulmonary artery systolic pressure (PASP), tricuspid reflux velocity, inferior vena cava diameter, and right atrial volume. Results: A reduced E-wave was observed with increasing age (Pearson's correlation coefficient [PCC], -0.30; p = 0.003). The same was observed for the E/A ratio (PCC, -0.21; p = 0.035). There was a significant positive association between age and PASP results (PCC, 0.40; p = 0.004) and tricuspid reflux velocity (PCC, 0.36; p = 0.008). There was no significant intersex difference in echocardiography variables. Conclusion: The present study showed the impact of age on RV diastolic function indices, which remained within the normal range, in subjects with preserved LV and RV function. The study did not evidence a significant difference between genders in relation to the diastolic function of the right ventricle.(AU)

Função de reserva do átrio esquerdo na avaliação da função diastólica indeterminada / Left atrial reserve function in assessing indeterminate diastolic function

Fundamento: A elevação das pressões de enchimento secundária à disfunção diastólica do ventrículo esquerdo ocupa papel central na fisiopatologia da insuficiência cardíaca. Mesmo assim, as diretrizes internacionais falham em detectar a disfunção diastólica em uma parte dos casos. Objetivo: Avaliar a função de reserva do átrio esquerdo, estimada pelo strain longitudinal de pico do átrio esquerdo, nos casos de função diastólica indeterminada. Método: Estudo observacional com indivíduos em ritmo sinusal e fração de ejeção do ventrículo esquerdo preservada, submetidos ao ecocardiograma e divididos em três grupos conforme a análise conjunta da relação E/e´ e do volume de átrio esquerdo indexado: Grupo 1, se pressões de enchimento normais; Grupo 2, se pressões de enchimento elevadas e Grupo 3, se pressões de enchimento indeterminadas. Speckle tracking bidimensional foi empregado para medir o strain longitudinal de pico do átrio esquerdo. Análise de variância, teste t Student e curva receptor-operador (ROC) foram empregados na análise estatística. Resultado: Foram incluídos 58 pacientes, com 61 ± 14 anos, sendo 57% mulheres, com fração de ejeção do ventrículo esquerdo de 62 ± 7%. Os Grupos 2 e 3 tiveram strain longitudinal de pico do átrio esquerdo menor que o Grupo 1 (20 ± 5% versus 22 ± 6% versus 30 ± 8%, respectivamente, p=0,004), mas não diferiram entre si (p=0,93). O strain longitudinal de pico do átrio esquerdo foi preditor de pressões de enchimento elevadas (p=0,026, área sob a curva=0,80), obtendo-se sensibilidade de 60% e especificidade de 80% com valor de corte ≤ 20%. Conclusão: A função de reserva do átrio esquerdo dos indivíduos com função diastólica indeterminada é similar à dos indivíduos com disfunção diastólica avançada, conferindo ao strain longitudinal de pico do átrio esquerdo o potencial de auxiliar na reclassificação da função diastólica indeterminada.(AU)

Background: Elevation of left ventricular filling pressures secondary to diastolic dysfunction plays a central role in the pathophysiology of heart failure. However, international guidelines still fail to diagnose diastolic dysfunction in some cases. Objective: To evaluate left atrial reservoir function in indeterminate diastolic function Method: Observational study with individuals in sinus rhythm and preserved left ventricular ejection fraction, submitted to echocardiogram and divided into three groups according to the combined analysis of E/e´ ratio and indexed left atrium volume: Group 1, if normal left ventricular filling pressures; Group 2, if increased left ventricular filling pressures and Group 3, if indeterminate left ventricular filling pressures. Twodimensional speckle tracking was used to measure peak left atrial strain (LAS). Analysis of variance, Student's t test and receiver-operator curve (ROC) were used in the statistical analysis. Results: We included 58 patients who had 61 ± 14 years old, 57% of whom were women, and had average left ventricular ejection fraction 62 ± 7%. Groups 2 and 3 had lower LAS than Group 1 (20 ± 5% versus 22 ± 6% versus 30 ± 8%, respectively, p = 0.004), but did not differ between them (p = 0.93). LAS was a good predictor of elevated left ventricular filling pressures (p = 0.026; area under the curve = 0.80), obtaining sensitivity of 60% and specificity of 80% with a cut-off value ≤ 20%. Conclusion: The findings suggest that the left atrial reservoir function of individuals with indeterminate diastolic function is similar to that of individuals with advanced diastolic dysfunction, rendering LAS the potential to support the reclassification of indeterminate diastolic function.(AU)

Evaluation of diastolic left intraventricular pressure differences in normal adults detected by vector flow mapping / 中华超声影像学杂志

Objective:To evaluate the characteristics of diastolic left intraventricular pressure differences(IVPD) and intraventricular pressure gradients(IVPG) among normal adults in different ages by vector flow mapping.Methods:From March 2019 to October 2020, 1 093 healthy volunteers were selected from the physical examination center of the Second Affiliated Hospital of Harbin Medical University, and they were divided into youth group (18-40 years old), middle-aged group (41-65 years old) and elderly group (>65 years old). IVPD and IVPG during isovolumetric relaxation(IR) period, rapid filling (RF) period, slow filling(SF) period, and atrial contraction(AC) period were measured by vector flow mapping, and were correlated with left ventricular diastolic function parameters.Results:①IVPD-IR, IVPD-AC, IVPG-IR, and IVPG-AC gradually increased while IVPD-RF, IVPD-SF, and IVPG-RF gradually decreased from the youth group to the elderly group(all P<0.05). ②IVPD-RF and IVPG-RF were positively correlated with E( r=0.391, 0.402, P<0.001, respectively). IVPD-AC and IVPG-AC were positively correlated with A( r=0.407, 0.425, P<0.001, respectively) and E/e′( r=0.268, 0.294, P<0.001, respectively) while negatively correlated with E/A( r=-0.510, -0.506, P<0.001, respectively) and e′/a′( r=-0.514, -0.511, P<0.001, respectively). Conclusions:IVPD and IVPG can quantitatively analyze the changes of left ventricular hemodynamics in normal subjects, which are expected to be new indexes to evaluate left ventricular diastolic function.

Effect of Enpagliflozin on left ventricular function, blood glucose and lipid level in T2DM patients / 国际生物医学工程杂志

Objective:To study the effects of Empagliflozin on left ventricular function and the level of blood glucose and lipid in type 2 diabetes mellitus (T2DM) patients.Methods:A total of 120 patients with T2DM complicated with cardiac function impairment were selected from Chu Hsien-I Memorial Hospital, Tianjin Medical University from December 2020 to May 2021. The diabetic patients were randomly divided into the observation group (60 cases) and control group (60 cases) by random number table method. Patients in the observation group were treated with Empagliflozin, while the control group underwent original hypoglycemic treatment. After the treatment, 6 cases were eliminated and 114 cases were completed, with 57 cases in each group. The changes of echocardiographic left ventricular function related indexes such as E/ e', left atrial volume index (LAVI), tricuspid regurgitation speed, left ventricular ejection fraction (LVEF) and laboratory indexes in the two groups were observed before and after treatment. The laboratory indexes checked include fasting blood glucose (FBG), glycosylated hemoglobin (HbA1c), triglyceride (TG), total cholesterol (TC), low density lipoprotein (LDL) and how density lipoprotein (HDL). Results:The E/ e', LAVI of the observation groups was significantly lower than that of the control group, and the differences were statistically significant (all P<0.05). There were no significant changes in tricuspid regurgitation speed, LVEF, TG, TC, LDL and HDL levels between the two groups after the treatment (all P>0.05). After the treatment, the levels of FBG and HbA1c in the two groups decreased, but there was no significant difference between the two groups (all P>0.05). Conclusions:Empagliflozin can effectively control the E/ e', LAVI of T2DM patients, and can early significant improvement of left ventricula diastolic function, which is very favorable for the patients. Along with good safety, Empagliflozin is suitable for clinical recommendation.

Síndrome cardiorrenal: aspectos clínicos y ecocardiográficos / Cardiorenal syndrome: Clinical and echocardiographic aspects

Resumen El síndrome cardiorrenal (SCR) es un trastorno en el que intervienen el corazón y los riñones, interactuando y produciendo una disfunción entre ellos en forma aguda o crónica. Existen diferentes fenotipos clínicos bien identificados como «desórdenes del corazón y riñón en los que la disfunción aguda o crónica en un órgano induce la disfunción aguda o crónica del otro¼. La alta incidencia de morbimortalidad cardiovascular presente en los pacientes con enfermedad renal crónica terminal (ERCT), en especial la insuficiencia cardiaca (IC), origina inicialmente una lesión miocárdica que conlleva remodelamiento ventricular, lo cual induce a la activación de mecanismos compensadores, entre los cuales el riñón es pieza fundamental, ya que regula la homeostasis hidroelectrolítica y así el volumen circulante, siendo esto en la etapa dialítica más evidente. Los cambios funcionales y anatómicos cardiovasculares que se producen en estos pacientes son muy prevalentes e incluyen las interacciones hemodinámicas del corazón y los riñones en la insuficiencia cardiaca, y el impacto de la enfermedad aterosclerótica en ambos sistemas de órganos. También describimos estrategias diagnósticas y terapéuticas aplicables al síndrome cardiorrenal, que determinan la importancia de la ecocardiografía como modelo de diagnóstico útil. Finalmente, se analizan las posibilidades de tratamiento y la remisión de las alteraciones funcionales cardiacas con el trasplante renal en los pacientes con ERCT.

Abstract Cardiorenal syndrome (CRS) is a disorder in which the heart and kidneys are involved, interacting and producing a dysfunction between them in an acute or chronic way. There are different clinical phenotypes well identified as "heart and kidney disorders in which acute or chronic dysfunction in one organ induces acute or chronic dysfunction in the other". The high incidence of cardiovascular morbimortality in patients with chronic terminal kidney disease (CKD), especially heart failure (HF), initially causes a myocardial lesion that leads to ventricular remodeling, which induces the activation of compensatory mechanisms, among which the kidney is a fundamental part since it regulates the hydroelectrolytic homeostasis and thus the circulating volume, being this in the dialytic stage more evident. The functional and anatomical changes at cardiovascular level that occur in these patients are very prevalent, and include hemodynamic interactions of the heart and kidneys in heart failure and the impact of atherosclerotic disease in both organ systems. We also describe diagnostic and therapeutic strategies applicable to cardiorenal syndrome, which determine the importance of echocardiography as a useful diagnostic model. Finally, we analyze the possibilities of treatment and remission of cardiac functional alterations with renal transplantation in patients with T-CKD.

Study of Diastolic Function in Asymptomatic Type 2 Diabetes Patients Visiting Goa Medical College and Hospital, Bambolim, Goa

Diabetes mellitus increases the risk of heart failure even in the absence of other co-morbidities. The present study is done to assess the diastolic dysfunction in diabetic patients and in correlating the grade of dysfunction with various parameters like age, gender, sex, glycaemic control, and microangiopathies associated with diabetes. We wanted to determine as to whether there is an association between diastolic dysfunction and type 2 DM and quantify the relation of LV diastolic dysfunction with age, duration of DM, HbA1c and obesity indices. We also wanted to assess the correlation between diastolic dysfunction and other microvascular complications of type 2 diabetes. METHODSThis is a cross sectional study. The sample size was 75. Assessment of the mitral peak velocity of early filling (E) and early diastolic mitral annular velocity (e’), and (E / e’) ratio is used to measure diastolic dysfunction. study was conducted on patients admitted in Goa Medical College. RESULTSAmong 75 subjects studied, 56 subjects (74.6 %) had diastolic dysfunction. There is a correlation of duration of diabetes with grade of diastolic dysfunction with a p value of 0.001. There is a correlation of dipstick proteinuria with grades of diastolic dysfunction with a p value of 0.002. Mean HbA1c in patients with grade 0 dysfunction was 7.93 with standard deviation of 0.86, grade 1 dysfunction was 7.28 with a standard deviation of 0.71, grade 2 dysfunction was 9.72 with standard deviation of 1.86, grade 3 dysfunction was 11.94 with standard deviation of 2.05 with a p value of < 0.001. CONCLUSIONSDiabetes is an independent risk factor for cardiovascular disease in the form of diastolic dysfunction in the initial stages. The grade of dysfunction was proportional to duration of diabetes, blood sugar levels, and mean HbA1c. Diastolic dysfunction also correlates with other microvascular complications of diabetes.

Cardiac functional alterations and its risk factors in elderly patients with obstructive sleep apnea syndrome free of cardiovascular disease / 南方医科大学学报

OBJECTIVE@#To evaluate the changes of cardiac structure and function and their risk factors in elderly patients with obstructive sleep apnea syndrome (OSA) without cardiovascular complications.@*METHODS@#Eighty-two elderly OSA patients without cardiovascular disease admitted between January, 2015 and October, 2016 were enrolled in this study. According to their apnea-hypopnea index (AHI, calculated as the average number of episodes of apnoea and hypopnoea per hour of sleep), the patients were divided into mild OSA group (AHI < 15) and moderate to severe OSA group (AHI ≥ 15). The demographic data and the general clinical data were recorded and fasting blood samples were collected from the patients on the next morning following polysomnographic monitoring for blood cell analysis and biochemical examination. Echocardiography was performed within one week after overnight polysomnography, and the cardiac structure, cardiac function and biochemical indexes were compared between the two groups.@*RESULTS@#Compared with those with mild OSA group, the patients with moderate to severe OSA had significantly higher hematocrit (0.22±0.08 @*CONCLUSIONS@#Cardiac diastolic function impairment may occur in elderly patients with moderate or severe OSA who do not have hypertension or other cardiovascular diseases, and the severity of the impairment is positively correlated with AHI.

Correlation between Biomechanical Changes at the End of Left Ventricular Systole and Pathogenesis of Diastolic Heart Failure / 医用生物力学

Objective To analyze the correlation of the maximum myocardial stiffness (maxEav), maximum modulus of elasticity (Emax) with the E/A ratio of mltral annulus at the end of left ventricular systole for patients with essential hypertension. Methods 298 patients with essential hypertension were selected as research objects. The left ventricular mass index (LVMI) and relative wall thickness (RWT) of the patients were calculated. Based on LVMI and RWT indexes, the patients were divided into left ventricular normal (LVN) group, left ventricular concentric remodeling (LVCR) group, left ventricular eccentric hypertrophy (LVEH) group, left ventricular concentric hypertrophy (LVCH) group, respectively. In addition, 115 healthy subjects were selected into control group. The subjects were diagnosed by echocardiography, so as to analyze the correlation of maxEav, Emax with E/A. Results The maxEav, Emax and E/A in LVCR group, LVEH group and LVCH group were all negatively correlated. The differences of E/A between LVCR group, LVCH group and control group showed statistical significance. Compared with control groups, both the maxEav and Emax in hypertension group decreased, and the difference was statistically significant. Conclusions The maxEav and Emax are more sensitive and easy indexes to judge left ventricular diastolic function. The analysis on maxEav and Emax changes in patients with left ventricular remodeling and diastolic dysfunction in hypertension, as well as the exploration on pathogenesis of diastolic heart failure, can provide the theoretical basis for prevention and treatment of diastolic heart failure in the future.

Immediate and Evolutionary Recovery of Left Ventricular Diastolic Function after Transcatheter Aortic Valve Replacement: Comparison with Surgery

Maniobra de handgrip y patrón pseudonormal del flujo transmitral en pacientes jóvenes con corazón estructuralmente sano / Handgrip maneuver and pseudonormal transmitral flux pattern in young patients with a structurally healthy heart

El flujo transmitral, a pesar de que su sóla modificación ya no representa un criterio para definir disfunción diastólica, sigue siendo el primer paso para el diagnóstico. El patrón pseudonormal sigue siendo un reto en cuanto a su diferenciación con el patrón normal o anormal en la población, sin embargo resulta interesante conocer la prevalencia de este patrón en poblaciones jóvenes con corazón estructuralmente sano. Para ello, se realizó un estudio descriptivo transversal en 38 pacientes jóvenes con corazón estructuralmente sano, sin enfermedades cardiovasculares previamente diagnosticadas, que acudieron al Centro Cardiovascular Regional ASCARDIO en el período enero-marzo 2019. Se practicó un ecocardiograma transtorácico donde se realizaron determinaciones basales del flujo transmitral y posterior a la aplicación de la maniobra de Handgrip. Los resultados demuestran que el 68% de los pacientes mostraron patrón pseudonormal del flujo transmitral. Al momento de realizar la maniobra de Handgrip, el 84% de los individuos mostraron un patrón de flujo normal mientras el 6% correspondieron a patrón pseudonormal siendo la distribución por sexo equitativa para cada categoría. La maniobra de Handgrip resulta útil para desenmascarar el patrón pseudornomal a normal del flujo transmitral y en sentido contrario, en pacientes con corazón estructuralmente sano(AU)

Transmitral flow, although its single modification no longer represents a criteria to define diastolic dysfunction, remains the first step for diagnosis. The pseudonormal pattern remains a challenge in terms of its differentiation with the normal or abnormal pattern in the population, however it is interesting to know the prevalence of this pattern in young populations with structurally healthy heart. We performed a descriptive transversal study in 38 patients with a structurally healthy heart and no known cardiovascular disease, who attended the Regional Cardiovascular Center ASCARDIO in the period January-March 2019. A transthoracic echocardiogram was performed where baseline determinations of transmitral flow and subsequent to the application of the Handgrip maneuver were made. The results show that 68% of patients had a pseudonormal pattern of transmitral flow. After performing the Handgrip maneuver, 84% of the individuals showed a normal flow pattern while 6% had a pseudonormal pattern, with an equal distribution by sex. Handgrip maneuver is useful to unmask the pseudonormal to normal pattern of transmitral flow and in the opposite direction, in patients with structurally healthy heart(AU)

Assessment of diastolic function in patients with aortic valve diseases

Background: Valvular heart disease (VHD) are prevalent and impose significant impact on heart function. Diastolic Dysfunction (DD) is less appreciated than Systolic Dysfunction (SD). The aim of this study was to assess the Diastolic Function (DF) in patients with Aortic Valve (AV) diseases as risk factors predisposing to DD.Methods: Cross-section study that involved 34 patients with AV diseases and other 10 controls. All patients are assessed for diastolic dysfunction by transthoracic echo Doppler study. M-mode echocardiography was used to measure cardiac dimensions and wall thickness. LV mass was measured on echocardiogram at rest.Results: Among the 34-patients, 19 (55.8%) of them were male patients and 15(44.2%) of them were female patients. The data showed that there were 12 patients with Aortic Stenosis (AS), eight patients with AORTIC regurgitation (AR), six patients with Aortic Sclerosis (ASCL) and 8 patients with combined AR-AS. Around third of the patients (35.3%) had Grade II DD followed by grade I and Grade III. However, around 14.7 % didn’t have any dysfunction. Overall, there was 77% of the patients with AV diseases.Conclusions: Author concluded that Aortic Valve diseases is significantly related to- the development of diastolic dysfunction and the DD is influenced by severity of AV diseases.

Effect of ventricular premature catheter ablation on diastolic function in elderly patients / 中国综合临床

Objective To observe whether catheter ablation for ventricular premature complexes (PVC) has an effect on ventricular diastolic function in elderly patients.Methods Elderly patients older than 65 years of age who underwent catheter ablation from March 2012 to May 2015 for idiopathic ventricular premature complexes were enrolled.Preoperative echocardiography was performed using E／e′ for left ventricular diastolic function and venous brain natriuretic peptide (BNP) levels were measured.All patients underwent catheter ablation under the guidance of a three?dimensional mapping system.Cardiac ultrasound and BNP levels were repeated 6 months after ablation, and 24?hour electrocardiogram was performed to confirm ventricular premature complexes.Results There were a total of 89 patients with idiopathic ventricular premature complexes ( PVC) who underwent catheter ablation.81 cases were successed at 6 months,with a success rate of 91.0%.At 6 months after ablation,the E／e′ values were significantly lower ((15.3±5.2) vs ( 10.2± 3.2),( P＜0.001)) and BNP levels were significantly lower (( 202.0 ± 23.2) pg／L vs (94±13.3) pg／L),(P＜0.001).For the unsuccessful subgroup,there was no significant change in E／e′values (16.3±6.3 vs 15.2±5.6) and BNP levels ((223.0±26.8) pg／L vs (245.0±23.9) pg／L), (P＞0.05).Conclusion The number of premature ventricular beats is associated with left ventricular diastolic function,and ventricular premature catheter ablation can improve left ventricular diastolic function in elderly PVC patients.

Changes of left ventricular structure and function after minimally invasive repair of mitral valve prolapse / 中国胸心血管外科临床杂志

@#Objective    To evaluate the changes of left ventricular structure and function by echocardiography and its grading of left ventricular diastolic function in patients with mitral valve prolapse treated by minimally invasive mitral valve repair. Methods    By retrospective analysis, 37 patients including 25 males and 12 females aged 53.49±11.02 years with mitral valve prolapse who underwent minimally invasive mitral valve repair were as an operation group, and 34 healthy persons including 19 males and 15 females aged 54.26±8.33 years matched by age and sex were selected as a control group. Ultrasound parameters of every participant were routinely collected before operation, 1 month, 3 months, 6 months and 1 year after operation, and left ventricular diastolic function was graded. The ultrasound parameters between the two groups were compared. Results    The diameters of left ventricular end systolic and diastolic phase, left atrial diameter and left ventricular volume in the operation group were significantly smaller than those before operation. The diameters of left ventricle and left atrium after operation were significantly shorter than those before operation, but they were still larger than those of the control group. The ejection fraction value decreased significantly at one month after the operation and then returned to normal level. The incidence of left ventricular diastolic dysfunction at 6 months and 1 year after operation was significantly lower than that before operation (P<0.05). Conclusion    Minimally invasive repair for patients with mitral valve prolapse can significantly improve systolic and diastolic functions of left ventricle while reconstructing left atrial and left ventricular structures.

Effect of circadian rhythm of diastolic blood pressure on diastolic function in elderly hypertensive patients / 中国综合临床

Objective To analyze the effects of 24-hour diurnal blood pressure rhythm ( BPCR) changes on diastolic function in elderly hypertensive patients. Methods From February 2016 to February 2018,one hundred and twenty elderly patients with hypertension were divided into two groups according to their 24-hour ambulatory blood pressure status: dipper group with 65 cases ( nocturnal blood pressure drop rate (＞10%) and non-dipper group with 55 cases ( nocturnal blood pressure drop rate＜10%); ambulatory blood pressure and echocardiographic relaxation were detected. Posterior wall (PW),interventricular septum (IVS),left ventricular diameter (LVEDD),left ventricular mass index (LVM) and left ventricular mass index (LVMI) were examined. Fractional shortening ( FS),stroke volume ( SV),cardiac output ( CO) and cardiac index (CI) were calculated,and peak flow time (A peak flow time total integration,ATVI) and peak flow velocity (A Pea) were measured. K flow rate ventricular (APFV); E peak flow time ventricular integral (ETVI ), early Peak flow Velocity ( EPFV ) and left ventricular ejection fraction ( LVEF ) were detected. Results The 24 h DBP, 24 hSBP, nocturnal DBP, and nocturnal SBP in dipper group were (80. 27±7. 29) mmHg,(125. 29±10. 38) mmHg,(69. 98±6. 36) mmHg,(110. 39±10. 52) mmHg,which were lower than those of the noninvasive group ((83. 82±7. 51) mmHg,(130. 89±10. 71) mmHg,(79. 81 ±6. 84) mmHg,( 126. 83 ± 10. 92) mmHg), the differences were statistically significant ( t ＝ 12. 809, 13.954,11.053,13.289,P＝0.042,0.021,0.014,0.006).The EPFV in the dipper group was (65.02 ±11. 83) cm/s,which was higher than that in the non-dipper group ((60. 84±11. 29) cm/s). The A/E, ATVI,and APFV in the dipper group were (1.03±0.58),(5.59±1.72) cm,(63.74±11.06) cm/s, respectively,lower than those in non-dipper group( (1. 14±0. 54),(6. 11±1. 68) cm,(68. 82±11. 17) cm/s),the differences were statistically significant (t＝10. 895,11. 643,12. 339,10. 854,P＝0. 032,0. 027, 0. 013,0. 006). Left ventricular diastolic function was negatively correlated with daytime DBP (r＝－ 0. 195,－0. 217,－0. 174,－0. 173,P＜0. 05) and positively correlated with nighttime SBP( r＝0. 194,0. 171,0. 220, 0. 206,P＜0. 05). Conclusion In elderly hypertensive patients,the left ventricular diastolic function and left ventricular hypertrophy are more serious in non-dipper patients, and it is necessary to strengthen the control of nocturnal blood pressure in elderly hypertensive patients.

Two-dimensional speckle tracking imaging in assessing the left ventricular diastolic function of patients with esophageal carcinoma after radiotherapy / 中华放射肿瘤学杂志

Objective To evaluate the early injury and dynamic changes of the left ventricular diastolic function of patients with esophageal carcinoma after radiotherapy by using two-dimensional speckle tracking imaging (2D-STI).Methods From 2017 to 2018,echocardiography examinations were performed in 39 patients with esophageal carcinoma before,during and after the first thoracic radiotherapy to measure the left ventricular end diastolic volume (LVEDV),left ventricular end systolic volume (LVESV),left ventricular ejection fraction (LVEF),early diastolic mitral flow velocity/early diastolic mitral annular peak velocity (E/e'),left atrial volume (LAV),2D-STI parameters including the left ventricular global longitudinal strain (GLS),global systolic stain rate (GSRs),global early diastolic strain rate (GSRe),global late diastolic strain rate (GSRa) and E/GSRe ratio.According to the GLS of patients with esophageal carcinoma after radiotherapy (cumulative dose≥50 Gy),the patients were divided into good prognosis (n=23) and poor prognosis groups (n=16).The E/GSRe ratio was statistically compared between two groups.Results The E/e'and LAVI were increased significantly only after radiotherapy (both P＜0.05),and LVEF was decreased significantly only after radiotherapy (P＜0.05).The e' tended to decline before,during and after radiotherapy (all P＜0.05).GLS and GSRs were significantly decreased only after radiotherapy (both P＜0.05),whereas GSRa was considerably decreased during radiotherapy (P＜0.05).E/GSRe tended to increase (P＜0.05).Compared with the good prognosis group,E/GSRe was significantly increased after radiotherapy in the poor prognosis group (P＜0.05).Conclusions Diastolic dysfunction can occur in the early stage of radiation-induced heart injury.The global diastolic strain rate and E/GSRe obtained by 2D-STI can be used to assess the early left ventricular dysfunction.E/GSRe can be more sensitive to evaluate the clinical prognosis compared with the global diastolic strain rate.