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| LETTER TO THE EDITOR |
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| Year : 2021 | Volume
: 7
| Issue : 1 | Page : 85 |
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A neonatal echocardiographic Z-score nomogram for a developing Country
Mahmood Dhahir Al-Mendalawi
Professor in Paediatrics and Child Health, Consultant Paediatrician, Department of Paediatrics, Al-Kindy College of Medicine, University of Baghdad, Baghdad, Iraq
| Date of Submission | 03-Jan-2021 |
| Date of Decision | 16-Jan-2021 |
| Date of Acceptance | 10-Feb-2021 |
| Date of Web Publication | 24-Apr-2021 |
Correspondence Address:
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/jpcs.jpcs_2_21
How to cite this article:
Al-Mendalawi MD. A neonatal echocardiographic Z-score nomogram for a developing Country. J Pract Cardiovasc Sci 2021;7:85 |
How to cite this URL:
Al-Mendalawi MD. A neonatal echocardiographic Z-score nomogram for a developing Country. J Pract Cardiovasc Sci [serial online] 2021 [cited 2023 May 28];7:85. Available from: https://www.j-pcs.org/text.asp?2021/7/1/85/314474 |
Sir,
I read the interesting article by Jain et al.[1] published in September–December 2020 issue of the Journal of the Practice of Cardiovascular Sciences. Using two-dimensional and M mode echocardiography, Jain et al.[1] formulated the echocardiographic data of various routinely measured cardiovascular structures in Indian newborns up to 24 h after birth and derived Z-score graphs for those components. Apart from the few study limitations addressed by Jain et al.,[1] I presume that the following methodological limitation is also contributory. Ethnicity is an important determinant of generating nomograms of different pediatric echocardiographic measurements.[2],[3],[4] India is a well-known and diverse multiethnic country that is the home to thousands of small ethnic and tribal groups.[5] Regrettably, Jain et al.[1] did not state the exact ethnic standard of the studied population. We realize that it is a major challenge to practically establish a research methodology on the neonatal echocardiographic Z-scores of the different cardiovascular structures related to a particular ethnicity in a multiethnic population such as India. Nevertheless, the effect of ethnic diversity must be taken into consideration during assessing the clinical applicability of the nomogram constructed by Jain et al.[1]
Financial support and sponsorship
Nil.
Conflicts of interest
There are no conflicts of interest.
| References | |  |
| 1. | Jain R, Mathew C, Rawal J, Shah T, Padhi B, Saxena N. A neonatal echocardiographic Z-score nomogram for a developing country. J Pract Cardiovasc Sci 2020;6:244-52.  [Full text] |
| 2. | Lopez L, Colan S, Stylianou M, Granger S, Trachtenberg F, Frommelt P, et al. Relationship of echocardiographic Z scores adjusted for body surface area to age, sex, race, and ethnicity: The Pediatric Heart Network Normal Echocardiogram Database. Circ Cardiovasc Imaging 2017;10:e006979. |
| 3. | Majonga ED, Norrish G, Rehman AM, Kranzer K, Mujuru HA, Nathoo K, et al. Racial variation in echocardiographic reference ranges for left chamber dimensions in children and adolescents: A systematic review. Pediatr Cardiol 2018;39:859-68. |
| 4. | Mendizábal B, Khoury P, Woo JG, Urbina EM. Racial differences in the influence of risk factors in childhood on left ventricular mass in young adulthood. J Pediatr 2020;217:152-7. |
| 5. | |
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