Comparison of diastolic function in children with transfusion dependent beta thalassemia major by tissue and conventional doppler imaging indices and its correlation with serum ferritin levels

Chetan Kumar Nanjegowda, Sowmini Padmanabh Kamath, Padmanabh Kamath, Tejas Dushyantbhai Shah, Vaman Kulkarni, Harsha Prasada Lashkari, Bantwal Shantharam Baliga

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Abstract

Nanjegowda CK, Kamath SP, Kamath P, Shah TD, Kulkarni V, Lashkari HP, Baliga BS. Comparison of diastolic function in children with transfusion dependent beta thalassemia major by tissue and conventional doppler imaging indices and its correlation with serum ferritin levels. Turk J Pediatr 2019; 61: 250-259. Regular blood transfusions for children with beta thalassemia major (β- TM) results in iron overload cardiomyopathy/cardiac failure. Mortality in these children is most often because of heart failure. We compared Tissue Doppler Imaging (TDI) and conventional pulse wave Doppler (PWD) indices in evaluating diastolic function in chronically transfused β-TM children and correlated the Doppler indices with mean serum ferritin levels. This was a prospective cross-sectional study conducted at tertiary teaching hospital. β-TM children aged 3 to 18 years were enrolled as per inclusion criteria. PWD parameters at the mitral inflow (E, A, E/A and DT) and TDI parameters at the medial mitral annulus (E'and E/E') were used for estimation of diastolic dysfunction. Of the 66 children with thalassemia, the mean age was 10.2±3.77yrs and 60.6% were boys. The E/E' ratio estimated diastolic dysfunction (34/66, 51.5%) greater than four times that assessed by E/A ratio indices (8/66, 12.1%) in the subjects. Association of serum ferritin levels with E/E' ratio by chi square test was significant statistically (P=0.027), however was not significant with E/A ratio. By Mann Whitney test, the median serum ferritin levels (ng/ml) were higher [4034.50, (IQR-2084-5340.25) in those with diastolic dysfunction (abnormal E/E'), when compared to those with normal E/E'[2037.50(1510.75- 3572.25)], with their difference being significant (p=0.011), however serum ferritin levels were not significant with E/A ratio and DT. E/E' parameter had a sensitivity and specificity of 76.5% and 53.1% respectively at a mean serum ferritin cutoff level of 2076 ng/mL by ROC analysis. In conclusion, TDI is a more reliable modality for diagnosing early diastolic dysfunction when compared to PWD. Threshold level of serum ferritin greater than 2076 ng/mL is associated with increased incidence of diastolic dysfunction.

Original languageEnglish
Pages (from-to)250-256
Number of pages7
JournalThe Turkish journal of pediatrics
Volume61
Issue number2
DOIs
Publication statusPublished - 01-01-2019

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beta-Thalassemia
Ferritins
Serum
Heart Failure
Child Mortality
Iron Overload
Thalassemia
Chi-Square Distribution
Cardiomyopathies
Tertiary Care Centers
ROC Curve
Teaching Hospitals
Blood Transfusion
Cross-Sectional Studies
Sensitivity and Specificity
Incidence

All Science Journal Classification (ASJC) codes

  • Pediatrics, Perinatology, and Child Health

Cite this

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title = "Comparison of diastolic function in children with transfusion dependent beta thalassemia major by tissue and conventional doppler imaging indices and its correlation with serum ferritin levels",
abstract = "Nanjegowda CK, Kamath SP, Kamath P, Shah TD, Kulkarni V, Lashkari HP, Baliga BS. Comparison of diastolic function in children with transfusion dependent beta thalassemia major by tissue and conventional doppler imaging indices and its correlation with serum ferritin levels. Turk J Pediatr 2019; 61: 250-259. Regular blood transfusions for children with beta thalassemia major (β- TM) results in iron overload cardiomyopathy/cardiac failure. Mortality in these children is most often because of heart failure. We compared Tissue Doppler Imaging (TDI) and conventional pulse wave Doppler (PWD) indices in evaluating diastolic function in chronically transfused β-TM children and correlated the Doppler indices with mean serum ferritin levels. This was a prospective cross-sectional study conducted at tertiary teaching hospital. β-TM children aged 3 to 18 years were enrolled as per inclusion criteria. PWD parameters at the mitral inflow (E, A, E/A and DT) and TDI parameters at the medial mitral annulus (E'and E/E') were used for estimation of diastolic dysfunction. Of the 66 children with thalassemia, the mean age was 10.2±3.77yrs and 60.6{\%} were boys. The E/E' ratio estimated diastolic dysfunction (34/66, 51.5{\%}) greater than four times that assessed by E/A ratio indices (8/66, 12.1{\%}) in the subjects. Association of serum ferritin levels with E/E' ratio by chi square test was significant statistically (P=0.027), however was not significant with E/A ratio. By Mann Whitney test, the median serum ferritin levels (ng/ml) were higher [4034.50, (IQR-2084-5340.25) in those with diastolic dysfunction (abnormal E/E'), when compared to those with normal E/E'[2037.50(1510.75- 3572.25)], with their difference being significant (p=0.011), however serum ferritin levels were not significant with E/A ratio and DT. E/E' parameter had a sensitivity and specificity of 76.5{\%} and 53.1{\%} respectively at a mean serum ferritin cutoff level of 2076 ng/mL by ROC analysis. In conclusion, TDI is a more reliable modality for diagnosing early diastolic dysfunction when compared to PWD. Threshold level of serum ferritin greater than 2076 ng/mL is associated with increased incidence of diastolic dysfunction.",
author = "Nanjegowda, {Chetan Kumar} and Kamath, {Sowmini Padmanabh} and Padmanabh Kamath and Shah, {Tejas Dushyantbhai} and Vaman Kulkarni and Lashkari, {Harsha Prasada} and Baliga, {Bantwal Shantharam}",
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T1 - Comparison of diastolic function in children with transfusion dependent beta thalassemia major by tissue and conventional doppler imaging indices and its correlation with serum ferritin levels

AU - Nanjegowda, Chetan Kumar

AU - Kamath, Sowmini Padmanabh

AU - Kamath, Padmanabh

AU - Shah, Tejas Dushyantbhai

AU - Kulkarni, Vaman

AU - Lashkari, Harsha Prasada

AU - Baliga, Bantwal Shantharam

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Nanjegowda CK, Kamath SP, Kamath P, Shah TD, Kulkarni V, Lashkari HP, Baliga BS. Comparison of diastolic function in children with transfusion dependent beta thalassemia major by tissue and conventional doppler imaging indices and its correlation with serum ferritin levels. Turk J Pediatr 2019; 61: 250-259. Regular blood transfusions for children with beta thalassemia major (β- TM) results in iron overload cardiomyopathy/cardiac failure. Mortality in these children is most often because of heart failure. We compared Tissue Doppler Imaging (TDI) and conventional pulse wave Doppler (PWD) indices in evaluating diastolic function in chronically transfused β-TM children and correlated the Doppler indices with mean serum ferritin levels. This was a prospective cross-sectional study conducted at tertiary teaching hospital. β-TM children aged 3 to 18 years were enrolled as per inclusion criteria. PWD parameters at the mitral inflow (E, A, E/A and DT) and TDI parameters at the medial mitral annulus (E'and E/E') were used for estimation of diastolic dysfunction. Of the 66 children with thalassemia, the mean age was 10.2±3.77yrs and 60.6% were boys. The E/E' ratio estimated diastolic dysfunction (34/66, 51.5%) greater than four times that assessed by E/A ratio indices (8/66, 12.1%) in the subjects. Association of serum ferritin levels with E/E' ratio by chi square test was significant statistically (P=0.027), however was not significant with E/A ratio. By Mann Whitney test, the median serum ferritin levels (ng/ml) were higher [4034.50, (IQR-2084-5340.25) in those with diastolic dysfunction (abnormal E/E'), when compared to those with normal E/E'[2037.50(1510.75- 3572.25)], with their difference being significant (p=0.011), however serum ferritin levels were not significant with E/A ratio and DT. E/E' parameter had a sensitivity and specificity of 76.5% and 53.1% respectively at a mean serum ferritin cutoff level of 2076 ng/mL by ROC analysis. In conclusion, TDI is a more reliable modality for diagnosing early diastolic dysfunction when compared to PWD. Threshold level of serum ferritin greater than 2076 ng/mL is associated with increased incidence of diastolic dysfunction.

AB - Nanjegowda CK, Kamath SP, Kamath P, Shah TD, Kulkarni V, Lashkari HP, Baliga BS. Comparison of diastolic function in children with transfusion dependent beta thalassemia major by tissue and conventional doppler imaging indices and its correlation with serum ferritin levels. Turk J Pediatr 2019; 61: 250-259. Regular blood transfusions for children with beta thalassemia major (β- TM) results in iron overload cardiomyopathy/cardiac failure. Mortality in these children is most often because of heart failure. We compared Tissue Doppler Imaging (TDI) and conventional pulse wave Doppler (PWD) indices in evaluating diastolic function in chronically transfused β-TM children and correlated the Doppler indices with mean serum ferritin levels. This was a prospective cross-sectional study conducted at tertiary teaching hospital. β-TM children aged 3 to 18 years were enrolled as per inclusion criteria. PWD parameters at the mitral inflow (E, A, E/A and DT) and TDI parameters at the medial mitral annulus (E'and E/E') were used for estimation of diastolic dysfunction. Of the 66 children with thalassemia, the mean age was 10.2±3.77yrs and 60.6% were boys. The E/E' ratio estimated diastolic dysfunction (34/66, 51.5%) greater than four times that assessed by E/A ratio indices (8/66, 12.1%) in the subjects. Association of serum ferritin levels with E/E' ratio by chi square test was significant statistically (P=0.027), however was not significant with E/A ratio. By Mann Whitney test, the median serum ferritin levels (ng/ml) were higher [4034.50, (IQR-2084-5340.25) in those with diastolic dysfunction (abnormal E/E'), when compared to those with normal E/E'[2037.50(1510.75- 3572.25)], with their difference being significant (p=0.011), however serum ferritin levels were not significant with E/A ratio and DT. E/E' parameter had a sensitivity and specificity of 76.5% and 53.1% respectively at a mean serum ferritin cutoff level of 2076 ng/mL by ROC analysis. In conclusion, TDI is a more reliable modality for diagnosing early diastolic dysfunction when compared to PWD. Threshold level of serum ferritin greater than 2076 ng/mL is associated with increased incidence of diastolic dysfunction.

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