scholarly journals Reference ranges for left, right and interventricular septum indices at 20 to 36+6 weeks of gestation derived using spectral myocardial tissue Doppler on Voluson ultrasound machines

2019 ◽  
Vol 21 (3) ◽  
pp. 279 ◽  
Author(s):  
Alberto Borges Peixoto ◽  
Nathalie Jeanne Bravo-valenzuela ◽  
Wellington P Martins ◽  
Rosiane Mattar ◽  
Antonio Fernandes Moron ◽  
...  
Keyword(s):  
Polynomial Regression ◽  
Interventricular Septum ◽  
Tissue Doppler ◽  
Cross Sectional Study ◽  
Sample Volume ◽  
Doppler Velocity ◽  
Myocardial Tissue ◽  
Reference Ranges ◽  
Free Wall ◽  
Cross Sectional

Aim: To establish reference range values for peak myocardial tissue Doppler velocity (MTD) and myocardial performance index (MPI) of the left ventricle (LV), the right ventricle (RV), and the interventricular septum (IVS) at 20 to 36+6 weeks of gestation using spectral tissue Doppler.Material and methods: This cross-sectional study was conducted among 360 lowrisk singleton pregnancies. MTD during systole (S’), and early (E’) and late diastole (A’), and MPI’ were assessed by placing sample volume at the basal segment of the LV free wall, the RV free wall, and the IVS, respectively. Polynomial regression was used to obtain the best-fit curves for MTD and MPI’ measurements as a function of gestational age (GA), and adjustments were made using the determination coefficient (R2). Intra- and inter-observer reproducibility was evaluated using the concordance correlation coefficient (CCC).Results: All MTD velocities (cm/s) progressively increased with advancing GA (p<0.0001). Mean LV MTD values were 4.19 to 6.86 for S’, 3.52 to 7.22 for E’, and 6.85 to 9.19 for A’; mean RV MTD were 4.85 to 7.97 for S’, 4.49 to 8.66 for E’, and 8.44 to 11.20 for A’; and mean IVS MTD values were 3.75 to 5.78 for S’, 3.34 to 5.79 for E’, and 5.88 to 7.98 for A’. LV MPI’, RV MPI’, and IVS MPI’ did not significantly change with advancing GA. The CCC values for MTD were predominantly greater than 0.70, while those for MPI’ were <0.70.Conclusions: Reference values for the fetal MTD and MPI’ of RV, LV and IVS using tissue Doppler between 20 and 36+6 weeks of gestation were described.

Reference ranges for the fetal mitral, tricuspid, and interventricular septum annular plane systolic excursions (mitral annular plane systolic excursion, tricuspid annular plane systolic excursion, and septum annular plane systolic excursion) between 20 and 36 + 6 weeks of gestation

2020 ◽  
Vol 48 (6) ◽  
pp. 601-608
Author(s):  
Alberto Borges Peixoto ◽  
Nathalie Jeanne Bravo-valenzuela ◽  
Wellington P. Martins ◽  
Gabriele Tonni ◽  
Rosiane Mattar ◽  
...  
Keyword(s):  
Pregnant Women ◽  
Interventricular Septum ◽  
Polynomial Equation ◽  
Cross Sectional Study ◽  
Equation Model ◽  
Low Risk ◽  
Reference Ranges ◽  
Cross Sectional ◽  
Chamber View ◽  
Basal Septum

AbstractObjectivesThis study aimed to establish reference ranges for fetal mitral, tricuspid, and interventricular septum annular plane systolic excursions (MAPSE, TAPSE, and SAPSE) in normal pregnant women between 20 and 36 + 6 weeks of gestation.MethodsThis prospective and cross-sectional study included 360 low-risk singleton pregnancies between 20 and 36 + 6 weeks of gestation. MAPSE, TAPSE, and SAPSE were measured by M-mode in real time in an apical or basal four-chamber view through placing the cursor at the atrioventricular junction, marked by the valve rings at the tricuspid, mitral, and basal septum, respectively. A regression analysis was done to determine the appropriate polynomial equation model for both measurements and standard deviation (SD) values in relation to gestational age (GA). The intra- and inter-observer reproducibility was evaluated using the concordance correlation coefficient (CCC) and limits of agreement (LoA).ResultsThere was a significant positive correlation between MAPSE (r=0.705, p<0.0001), TAPSE (r=0.804, p<0.0001), and SAPSE (r=0.690, p<0.0001) and GA. The mean of each parameter ranged as follows: 2.87–5.56 mm, MAPSE; 3.98–8.07 mm, TAPSE; and 2.34–4.21 mm, SAPSE. Poor/moderate intra- and inter-observer reliability (CCC between 0.70 and 0.90) and poor/moderate agreement of all the tested parameters were evaluated (LoA between 10 and 50%).ConclusionsReference values were established for the fetal MAPSE, TAPSE, and SAPSE between 20 and 36 + 6 weeks of gestation in low-risk pregnant women. These parameters showed poor/moderate reproducibility.

Inter-Basal and Septal Connections of Papillary Muscles - An Anatomical Rationale for Rhythmic Opening of AV Valves - A Multicentric Medical College Based Cross Sectional Study

2021 ◽  
Vol 8 (31) ◽  
pp. 2865-2869
Author(s):  
Praveen Mulki Shenoy ◽  
Amith Ramos ◽  
Narasimha Pai ◽  
Bharath Shetty ◽  
Aravind Pallipady Rao
Keyword(s):  
Left Ventricle ◽  
Papillary Muscle ◽  
Interventricular Septum ◽  
Cross Sectional Study ◽  
Papillary Muscles ◽  
Cross Sectional ◽  
Medical College ◽  
Moderator Band ◽  
Almost All ◽  
And Function

BACKGROUND The papillary muscle basal connections have significant clinical implications. Variety of studies done on its morphology and function by various specialists in different departments. A close look on these revealed the interconnections of papillary muscles to one another and to the interventricular septum of both ventricles is related to uncoordinated contractions of papillary muscles, leading to hyper or hypokinesia or prolapse or even its rupture. METHODS Our study done in 25 formalin soaked hearts revealed after the deep and meticulous dissection, reflecting the walls of ventricles laterally the numerous interconnections of papillary muscles at its bases and IVS. Ventricles are opened by inverted ‘L’ shaped incision and its reflected more laterally till all the papillary muscles is visible in one frame after incising the moderator band. The connections were noted, measured, photographed, tabulated, compared with similar studies and analysed with experts with respective fields. RESULTS Almost all the specimens did have the interconnections. Further the post mortem findings of the cardiac related deaths with involvement of papillary muscles suggest damage to such ‘bridges’. The moderator band extensions to the base of right APM, and its extension to the posterior groups is noted in all the specimens. The bridge from the IVS to bases of both the groups of papillary muscles is noted in left ventricle. In90% of specimens the one PPM is found to be loosely connected, more so in left ventricle. CONCLUSIONS We are of a conclusion that such basal interconnections and to the interventricular septum are responsible for rhythmic contractions of papillary muscles of both ventricles. Since the AV valves have to open simultaneously, interconnections becomes mandatory as the impulse has to reach it before it reaches the trabeculae carniae. One of the Posterior papillary muscles is loosely connected to other papillary muscles, may be the reason for its rupture, more so in left ventricle. KEYWORDS Papillary Muscle, Interbasal Connection, Moderator Band, Valvular Prolapse, AV Valves

scholarly journals Fetal Biparietal Diameter and Abdominal Circumference Ratio in Bangladesh

1970 ◽  
Vol 39 (1) ◽  
pp. 24-27
Author(s):  
Sabrina Q Rashid
Keyword(s):  
Polynomial Regression ◽  
Cross Sectional Study ◽  
Abdominal Circumference ◽  
Accurate Assessment ◽  
Sectional Study ◽  
Cross Sectional ◽  
Biparietal Diameter ◽  
First Time ◽  
Polynomial Regression Model ◽  
Growth Abnormality

This study was conducted to determine fetal biparietal diameter and abdominal circumference ratio in Bangladesh. There is still no table of this ratio in our country. A prospective, cross-sectional study was conducted on well dated, singleton fetuses of healthy pregnant women. One table and two graphs were prepared by fitting Polynomial regression model. Percentiles, mean and two standard deviations were derived of the ratio. Fetal charts of the raw data with superimposed fitted curves were constructed. The model showed a good fit to the data of 1223 subjects. It covered 95% of the population and gave 3rd, 10th, 50th, 90th and 97th percentiles. This chart can be useful for accurate assessment of fetal biparietal diameter and abdominal circumference ratio to determine the type of fetal growth abnormality, symmetrical or asymmetrical. This is the first time that this ratio has been studied in Bangladesh. Key words: Biparietal diameter; abdominal circumference. DOI: 10.3329/bmj.v39i1.6229 Bangladesh Medical Journal 2010; 39(1): 24-27

scholarly journals Analysis of the Role of Parent’s Lifestyle by the Authoritative Parenting Style in Girls of Grade Three of High School in Zahedan: A Cross Sectional Study

2017 ◽  
Vol 4 (2) ◽  
Author(s):  
Azam Akbarizadeh ◽  
Khadijeh Khoeini
Keyword(s):  
High School ◽  
Parenting Style ◽  
Field Studies ◽  
Cross Sectional Study ◽  
Sample Volume ◽  
Authoritative Parenting ◽  
Cross Sectional ◽  
Authoritative Parenting Style ◽  
Political Economic

Background: Every family applies a certain educational style in individual and social education of their children. These styles are influenced by many factors, including cultural, social, political, economic styles, etc. The parents’ lifestyle is one of styles that have a great impact on parenting. In this regard, the goal of present research is analysis of the role of parent’s lifestyle by the authoritative parenting style. Methods: The research method is descriptive-analytic based on library, documentary and field studies. Statistical Society of the research is all intelligent girls of grade three in high school of Zahedan during 2015-2016 school years. Cochran formula has been used to determine the sample volume which 311 people were estimated. Spearman statistical methods and multiple regressions have been used to analyze the data. Results: The results of the research show that the lifestyle and its components have a significant correlation with authoritative parenting style and can predict it. Conclusion: The findings of this study, while having applicable aspects in this domain, can be helpful in planning supplementary remedial procedures.

scholarly journals Basal level of luteinizing hormone as a key marker of the idiopathic central hypogonadism in women

2020 ◽  
Vol 48 ◽  
Author(s):  
A. S. Loktionova ◽  
I. A. Ilovayskaya
Keyword(s):  
Luteinizing Hormone ◽  
Diagnostic Criteria ◽  
Roc Analysis ◽  
Diagnostic Value ◽  
Cross Sectional Study ◽  
Reference Ranges ◽  
Cross Sectional ◽  
Low Levels ◽  
Diagnostic Criterion ◽  
Fertile Women

Background: Central hypogonadism (CH) is a syndrome characterized by low levels of peripheral sex steroid hormones due to the lack of central (hypothalamic-pituitary) regulation of reproductive system. In females, CH clinically manifests by amenorrhea, anovulation, and infertility. The classical diagnostic criteria of CH in the absence of organic disease of hypothalamic-pituitary region (“idiopathic” CH) include low gonadotropin levels; however, their levels within the reference ranges do not exclude CH. Moreover, reference ranges for these parameters are different between laboratories. Thus, currently no clear laboratory diagnostic criteria for female CH are available.Aim: To determine the diagnostic value of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) basal levels for the confirmation of CH diagnosis in women and to identify cutoffs of basal gonadotropins levels, which can be considered as diagnostic criteria for female CH.Materials and methods: This cross-sectional study included 87 women: 49 with confirmed CH, aged 18 to 36 years (median, 24 [Q21; Q29]), and 38 healthy fertile women with regular menstrual cycles aged 21 to 45 years (median, 23 [Q23; Q28]). In all subjects, LH, FSH, estradiol, testosterone, prolactin, and free thyroxin levels were measured by chemiluminiscent immunoassay.Results: LH, FSH, estradiol, and prolactin levels in the CH patients were significantly lower than those in healthy subjects. The ROC analysis showed that LH level ≤ 1.95 ME/l indicated the central genesis of hypogonadism with sensitivity of 81.25% and specificity of 91.89%. Basal FSH level ≤ 5.075 ME/l had a 70.00% sensitivity and 77.14% specificity for CH diagnosis.Conclusion: Basal LH level ≤ 1.95 ME/l measured by chemiluminiscent immunoassay can be considered as an idiopathic CH diagnostic criterion in female with amenorrhea due to the hypoestrogenemia with sensitivity of > 80% and specificity > 90%.

How Much Cerebrospinal Fluid Should We Remove Prior to Measuring a Closing Pressure?

2016 ◽  
Vol 32 (4) ◽  
pp. 356-359 ◽  
Author(s):  
Son H. McLaren ◽  
Michael C. Monuteaux ◽  
Atima C. Delaney ◽  
Assaf Landschaft ◽  
Amir A. Kimia
Keyword(s):  
Cerebrospinal Fluid ◽  
Polynomial Regression ◽  
Pressure Change ◽  
Cross Sectional Study ◽  
Inclusion Criteria ◽  
Opening Pressure ◽  
Cross Sectional ◽  
Csf Pressure ◽  
Fractional Polynomial ◽  
Closing Pressure

Objective: The objective of this study was to identify a relationship between cerebrospinal fluid (CSF) volume removal and change in CSF pressure in children with suspected idiopathic intracranial hypertension (IIH). Methods: We performed a cross-sectional study of children 22 years and younger who underwent a lumbar puncture (LP) and had a documented opening pressure, closing pressure, and volume removed. Relationship between volume removal and pressure change was determined using a fractional polynomial regression procedure. Results: In the 297 patients who met the inclusion criteria, CSF pressure decreased by 1 cm H2O for every 0.91 mL of CSF removed if the maximum change in pressure was less than 15 cm H2O ( R2 = 0.38). Conclusion: A linear relationship exists between the volume of CSF removed and the amount of pressure relieved when the desired pressure change is less than 15 cm H2O.

Gestation-specific D-dimer reference ranges: a cross-sectional study

2014 ◽  
Vol 122 (3) ◽  
pp. 395-400 ◽  
Author(s):  
N Murphy ◽  
DI Broadhurst ◽  
AS Khashan ◽  
O Gilligan ◽  
LC Kenny ◽  
...  
Keyword(s):  
Cross Sectional Study ◽  
Reference Ranges ◽  
Sectional Study ◽  
Cross Sectional ◽  
D Dimer

Myocardial Tissue Doppler Velocity Imaging in Children: Comparative Study between Two Ultrasound Systems

2010 ◽  
Vol 23 (9) ◽  
pp. 929-937 ◽  
Author(s):  
Laurens P. Koopman ◽  
Cameron Slorach ◽  
Cedric Manlhiot ◽  
Brian W. McCrindle ◽  
Mark K. Friedberg ◽  
...  
Keyword(s):  
Comparative Study ◽  
Tissue Doppler ◽  
Doppler Velocity ◽  
Myocardial Tissue ◽  
Velocity Imaging

Fetal echocardiography: reference values for the Chinese population

2017 ◽  
Vol 45 (2) ◽  
Author(s):  
Xiaoyan Gu ◽  
Yihua He ◽  
Ye Zhang ◽  
Lin Sun ◽  
Ying Zhao ◽  
...  
Keyword(s):  
Reference Values ◽  
Fetal Echocardiography ◽  
Ductus Arteriosus ◽  
Cross Sectional Study ◽  
Quadratic Model ◽  
Reference Ranges ◽  
Single Center ◽  
Cross Sectional ◽  
Normal Reference ◽  
Inner Diameter

AbstractObjective:Global racial variability in human development can lead to differences in size of fetal cardiac structures during gestation. Our objective is to establish normal reference ranges of fetal cardiac dimensions between 20 and 34 weeks from fetal echocardiograms recorded at a single center in China.Methods:A prospective cross-sectional study was undertaken on single pregnancies with normal fetuses of varying gestational ages (GAs). A total of 4396 normal fetuses were divided into 15 groups from 20 to 34 weeks according to the GA. Measurements included the inner diameter of the fetal cardiac chambers and arteries, the aortic arch isthmus (AI), the descending aorta (DAO), the ductus arteriosus (DA), and the foramen ovale (FO). Measurements were statistically analyzed and regression analysis was applied to assess for correlation with GA.Results:Normal reference values of fetal cardiovascular dimensions between 20 and 34 weeks were obtained from 4396 subjects at a single center in China. Measurements of fetal cardiac structures increase with advancing GA. It seems there is no difference in r values among linear, cubic, and quadratic model analyses (P > 0.05). However, the r values for the exponential models appear to be smaller than those of the other three models (P < 0.05). Ratios of the diameters of fetal cardiac structures were calculated in order to identify for differential changes in the growth of structures.Conclusions:The presented data derived from 4396 normal fetuses provide the reference values of fetal echocardiography in China, which provide guidance to fetal echocardiography examinations.

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