scholarly journals Systolic and Diastolic Function in Congestive Heart Failure Pediatric Patients

2016 ◽  
Vol 54 (1) ◽  
pp. 37-46
Author(s):  
Angela Butnariu ◽  
Camelia Zamfir ◽  
Mihaela Iancu ◽  
Daniela Iacob ◽  
G. Samasca ◽  
...  

Background and Aims. Two-dimensional (2D) and Doppler echocardiography are the main methods for the non-invasive evaluation of ventricular function in children. Our study monitored the evaluation of systolic and diastolic function in pediatric patients, using classical echocardiographic parameters and pulsed tissue Doppler parameters, as well as the correlation between these. Methods. The study included 18 healthy children and 9 children diagnosed with congestive heart failure secondary to congenital heart malformations. The parameters of systolic and diastolic function were measured by 2D echocardiography, 2D guided M mode, color and pulsed Doppler, as well as by pulsed tissue Doppler at the level of the mitral and tricuspid annulus. Results. A relaxation alteration pattern or a pseudonormal pattern of E diastolic velocity compared to the A wave was found (E = A; E > A) in the group of subjects with heart failure. E wave deceleration time had significantly increased values in the case of patients with CHF, being correlated with diastolic dysfunction. Left ventricular flow propagation velocity Vp was decreased in patients with heart failure, the E/Vp ratio being maintained relatively constant in subjects with congestive heart failure and healthy subjects, most probably on account of the concomitant change in the E wave. Associations between the severity of systolic dysfunction and the diastolic dysfunction were found in pediatric patients diagnosed with congestive heart failure (Student test, p < 0.05). Conclusions. Tissue Doppler measurements proved to be useful for the evaluation of pediatric patients with altered ventricular geometry secondary to congenital heart disease, systolic-diastolic dysfunction and heart failure.

2020 ◽  
Vol 8 ◽  
pp. 670-684
Author(s):  
Ionut Stanca ◽  
Mihaela Rus ◽  
Alice Albu ◽  
Simona Fica

Cardiomyopathy by loading the myocardium with iron is the cause of heart failure in patients with major beta-thalassemia. In these patients, cardiac systolic function remains normal for a long time, but when signs of heart failure appear, death may occur in the first year, so it is necessary to identify parameters to predict the patient's progress and prognosis.Materials and methods. We enrolled 62 patients with beta-thalassemia major (30 men and 32 women), mean age 29.9 ± 7.3 years. 32.2% of patients had disorders of carbohydrate metabolism, 12.9% associated hypothyroidism, and the mean ferritin was 1060.9 ± 856.6 ng / ml. Patients were evaluated echocardiographically, using tissue doppler technique to assess systolic and diastolic function. Myocardial mass was calculated using standard formulas and the type of left ventricular remodeling (LV) was thus obtained. Depending on the ferritin level, choosing the threshold value of 1000ng / ml, a group subanalysis of the ultrasound parameters of cardiac systolic and diastolic function was performed.Results. All patients had LV ejection fraction above 50% (LVEF), but longitudinal LV systolic dysfunction was observed in 19.3% of patients. Also in patients with serum ferritin values ​​above 1000ng / ml, the parameters of longitudinal systolic function of LV are affected, paradoxically the average value of LVEF being higher in these patients. About a quarter of patients had diastolic dysfunction, but 40.3% had elevated LV filling pressures. We noticed that the batch with ferritin over 1000 ng / ml associated increased LV filling pressures. The evaluation of the function of the right ventricle by tissue Doppler (S wave at the level of the free wall VD) was statistically significantly correlated with the hemoglobin value and we obtained pathological values ​​(S VD <11.5 cm / s) especially in the group with ferritin over 1000ng / ml. We noticed the presence of morphological abnormalities of LV, by increasing myocardial mass and the appearance of LV remodeling, 31% of patients showed severe forms, especially eccentric remodeling. It was observed that there is a risk of negative remodeling of the left ventricle in the group of those with ferritin above 1000ng / ml.Conclusions. The study proves that the evaluation of the systolic and diastolic function of the left and right ventricle by tissue Doppler ultrasound is much more accurate in the early detection of myocardial dysfunction. Ferritin levels above 1000ng / ml have been associated with impaired cardiac function parameters. Also, the remodeling of the left ventricle observed in this group of patients may be the first sign of heart failure.


Author(s):  
Otto A. Smiseth ◽  
Maurizio Galderisi ◽  
Jae K. Oh

Evaluation of diastolic function by echocardiography is useful to diagnose heart failure with preserved ejection fraction by showing signs of diastolic dysfunction, and regardless of ejection fraction, echocardiography can be used to estimate left ventricular (LV) filling pressure. Diastolic dysfunction occurs in a number of cardiac diseases other than heart failure and mild diastolic dysfunction is part of the normal ageing process. The fundamental disturbances in diastolic dysfunction are slowing of myocardial relaxation, loss of restoring forces, and reduced LV chamber compliance. As a compensatory response there is elevated LV filling pressure. Slowing of relaxation and loss of restoring forces are reflected in reduction in LV early diastolic lengthening velocity (e?) by tissue Doppler. The reduced diastolic compliance is reflected in faster deceleration of early diastolic transmitral velocity by pulsed wave Doppler. Elevated LV filling pressure is reflected in a number of Doppler indices and in enlarged left atrium. This chapter reviews the physiology of diastolic function, the clinical methods and indices which are available, and how these should be applied.


1997 ◽  
Vol 273 (2) ◽  
pp. H921-H927 ◽  
Author(s):  
B. D. Hoit ◽  
Y. Shao ◽  
M. Gabel ◽  
C. Pawloski-Dahm ◽  
R. A. Walsh

Studies in the rapid-pacing model of heart failure have shown that left ventricular (LV) systolic function normalizes on cessation of pacing and LV diastolic dysfunction persists, but there is no information regarding atrial function under these conditions. To determine the effects of cessation of pacing on left atrial (LA) systolic and diastolic function, ten dogs with rapid pacing-induced heart failure (250 beats/min for 3-4 wk), six dogs with regression of heart failure (4 wk after cessation of rapid pacing), and seven control dogs were instrumented with LA sonomicrometers and micromanometers. At matched LA pressure, LA ejection (10.2 +/- 3.0 vs. 17.4 +/- 5.5%), reservoir volume fractions (19 +/- 8 vs. 35 +/- 11%), and heart rate-corrected mean normalized systolic ejection rate (1.25 +/- 0.33 vs. 1.60 +/- 0.44 EF/s) were significantly less, and the volume-normalized diastolic stiffness constant (4.9 +/- 0.8 vs. 3.2 +/- 1.1) was significantly greater, in regression versus control dogs; these changes were associated with incomplete regression of LA hypertrophy and a persistent 77.4% increase in beta-myosin heavy chain (beta-MHC) in the LA body. LV systolic function and weight were not significantly different, whereas the time constant of LV relaxation was longer (52.5 +/- 4.4 vs. 40.8 +/- 7.6 ms; P < 0.05) and LV end-diastolic pressure was greater (12.2 +/- 1.8 vs. 7.1 +/- 2.0 mmHg; P < 0.05) in regression compared with control dogs. Thus, unlike the normalization of LV systolic function observed with cessation of rapid pacing, LA systolic function is persistently abnormal, owing in part to persistent LV diastolic dysfunction, residual LA hypertrophy, and MHC isoform switches.


Author(s):  
Gihan M. Bebars ◽  
Hany T. Askalany

Abstract Background Malnourished children endure many changes in body composition and lose heart and skeletal muscle mass. Diastolic dysfunction is one of the major causes of heart failure with preserved ejection fraction. Aim To assess left ventricular systolic and diastolic functions in children with severe acute malnutrition using tissue Doppler imaging technique and to evaluate the effect of nutritional rehabilitation. Patients and Methods A follow-up case-control study conducted on 60 severely malnourished children (WHZ < -3SD) and 120 age and sex-matched healthy children as a control group. Tissue Doppler imaging (TDI) was done for all included malnourished children at admission and for control to measure left ventricular systolic and diastolic functions. Nutritional rehabilitation was done according to WHO protocol and tissue doppler was repeated after rehabilitation when (WHZ > -2SD) to detect any changes in systolic or diastolic functions. Results Systolic function was normal in malnourished children and control. Grade I diastolic dysfunction was detected in 40% and grade II in 30% of severely malnourished children in comparison to 100% normal diastolic function in control group. No correlations between diastolic dysfunction and either anthropometric measurements, electrolyte disturbances or Hb% in malnourished children before nutritional rehabilitation. Mortality from sepsis with associated ventricular dysfunction grade II documented in 3.3% of malnourished children. After nutritional rehabilitation diastolic function improved significantly as 65.6% of children attained normal diastolic function, 31% grade1 and 3.4% grade II. Positive correlations between diastolic function and WAZ, HAZ, WHZ and MUAC after rehabilitation. Conclusion Severe acute malnutrition affects diastolic function in children which is reversible in most of these cases with rehabilitation. TDI is an easy and practical method for detection and follow-up of ventricular function in malnourished children.


Author(s):  
Quang Tuan Pham

TÓM TẮT Mục tiêu: Khảo sát chức năng tâm trương thất trái theo khuyến cáo ASE/EACVI 2016 ở bệnh nhân bệnh cơ tim giãn bằng siêu âm tim. Tìm hiểu mối liên quan giữa chức năng tâm trương thất trái với tình trạng giãn thất trái, độ suy tim NYHA, phân suất tống máu thất trái, phân suất co cơ thất trái. Đối tượng và phương pháp nghiên cứu: Nghiên cứu mô tả cắt ngang trên 56 bệnh nhân bệnh cơ tim giãn nguyên phát được nhập viện và điều trị tại bệnh viện Trung ương Huế từ tháng 4/2018 đến tháng 8/2020. Kết quả: Đường kính thất trái cuối tâm trương và cuối tâm thu trung bình là 66,11 ± 7,3 mm và 57,7 ± 8,02 mm. Đường kính nhĩ trái trung bình là 40,61 ± 7,65 mm. Phân suất tống máu thất trái trung bình là 24,68 ± 5,97 %. Phân suất co cơ thất trái trung bình là 12,91 ± 4,55 %. Tất cả các bệnh nhân nhóm nghiên cứu đều có rối loạn chức năng tâm trương thất trái. Chiếm tỷ lệ cao nhất là rối loạn chức năng tâm trương độ II (44,6%), tiếp sau là rối loạn chức năng tâm trương độ III (35,8%) và rối loạn chức năng tâm trương độ I là 19,6%. Không có sự liên quan có ý nghĩa thống kê giữa mức độ rối loạn tâm trương thất trái với đường kính thất trái cuối thì tâm thu và tâm trương (p > 0,05). Có mối liên quan giữa rối loạn chức năng tâm trương thất trái với các thông số phân suất tống máu EF và phân suất co cơ FS (p < 0,005). Có sự tương quan thuận mức độ vừa giữa phân độ rối loạn chức năng tâm trương thất trái với phân độ suy tim theo NYHA với r = 0,445, sự tương quan đó có ý nghĩa thống kê (p < 0,001). Kết luận: Tất cả các bệnh nhân bệnh cơ tim giãn trong nhóm nghiên cứu đều có rối loạn chức năng tâm trương thất trái, chủ yếu là rối loạn chức năng tâm trương nặng độ II - III. Sự rối loạn này thể hiện rõ qua sự biến đổi các thông số đánh giá chức năng tâm trương thất trái trên siêu âm tim theo khuyến cáo ASE/ EACVI 2016, một khuyến cáo mới đưa ra nhằm tiếp cận đánh giá chức năng tâm trương một cách thuận tiện và dễ dàng hơn. Từ khóa: Bệnh cơ tim giãn, rối loạn chức năng tâm trương thất trái, khuyến cáo ASE/EACVI 2016 ABSTRACT EVALUATION OF LEFT DYSTOLIC FUNCTION ACCORDING TO THE RECOMMENDATION ASE/EACVI 2016 INPATIENTS WITH DILATED CARDIOMYPAHTIES Background: Dilated cardiomyopathy is a disease of the heart muscle, characterized by dilatation of the heart chamber and a dysfunction of the left or both ventricles. It often leads to progressive heart failure, and is the leading cause of heart transplant among all cardiomyopathy. The annual rate of sudden cardiac death in dilated cardiomyopathy is 2 - 4%, with sudden death accounting for half of all deaths [9]. Echocardiography is an evaluation of a patient with dilated cardiomyopathy. There have been many studies on dilated cardiomyopathy in the world. However, there are still few studies evaluating diastolic function in patients with dilated cardiomyopathy using cardiac Doppler echocardiography. Experts around the world have made many recommendations in assessing left ventricular diastolic function, most recently is the recommendation ASE/EACVI 2016. Comparing with the 2009 EAE/ASE recommendation, the recommendation ASE/EACVI 2016 for assessment of left ventricular diastolic function has fewer parameters, so it is easier to implement and more convenient in clinical practice. Objective: Surveying left ventricular diastolic function according to the recommendation ASE/EACVI 2016 in patients with dilated cardiomyopathy by echocardiography and investigating the relationship between left ventricular diastolic function with left ventricular dilatation, heart failure NYHA, left ventricular ejection fraction, left ventricle fractional shortening. Methods: Research was designed as a cross - sectional descriptive study. Studied on 56 patients with primary dilated cardiomyopathy were hospitalized and treated at Hue Central Hospital. Results: The results showed: The mean end - diastolic and end - systolic left ventricular diameters were 66,11 ± 7,3 mm and 57,7 ± 8,02 mm. The mean left atrial diameter was 40,61 ± 7,65 mm. The mean left ventricular ejection fraction was 24,68 ± 5,97%. The mean fractional shortening of left ventricular contraction was 12,91 ± 4,55%. All patients in the study group had left ventricular diastolic dysfunction. The highest proportion is diastolic dysfunction grade II (44,6%), followed by diastolic dysfunction grade III (35,8%) and diastolic dysfunction grade I is 19,6%. There was no statistically significant relationship between the classification of left ventricular diastolic dysfunction and left ventricular systolic and diastolic diameter (p > 0.05). There is a relationship between left ventricular diastolic dysfunction and parameters of ejection fraction EF and contraction fraction FS (p < 0.005). There is a moderate positive correlation between the classification of left ventricular diastolic dysfunction and the heart failure rating according to NYHA (r = 0,445, p < 0,001). Conclusion: All patients in the study group had left ventricular diastolic dysfunction, mostly grade II and grade III diastolic dysfunction. This disorder is clearly demonstrated by the change in the parameters of the left ventricular diastolic function assessment on echocardiography according to the 2016 ASE/ EACVI recommendations, a new recommendation introduced to approach the assessment of diastolic functionmore convenient and easier way. Key words: Dilated cardiomyopathy, left ventricular diastolic dysfunction, the recommendation ASE / EACVI 2016.


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