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Journal of Comprehensive Pediatrics: Vol.10, issue 3; e86725
published online: August 7, 2019
article type: Letter
received: November 24, 2018
accepted: July 9, 2019
DOI: https://doi.org/10.5812/compreped.86725
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Letter to: Assessment of Blood Pressure in Primary Non-Monosymptomatic Nocturnal Enuresis

authors:

avatar Mahmood Dhahir Al-Mendalawi ORCID 1 , *

Department of Pediatrics, Al-Kindy College of Medicine, University of Baghdad, Baghdad, Iraq

how to cite: Al-Mendalawi M D. Letter to: Assessment of Blood Pressure in Primary Non-Monosymptomatic Nocturnal Enuresis. J Compr Ped. 2019;10(3):e86725. https://doi.org/10.5812/compreped.86725.

Dear Editor,

I read with interest the case-control study by Yousefichaija et al. published in the 2018 November issue of Journal of Comprehensive Pediatrics (1). The authors studied the correlation between hypertension (HT) and nocturnal enuresis (NE) in a cohort of Iranian children. The authors found that the case group patients had a higher level of blood pressure (BP) recording (90% to 95% prehypertension, and 65% to 99% during HT) compared to the control group. As the case group had higher body mass index (BMI), the authors concluded that HT with increased BMI might affect enuresis in children (1). I presume that these results ought to be cautiously taken owing to the presence of the following methodological limitation. It is explicit that the proper evaluation of the measured pediatric BP requires the employment of the population-specific BP standard references based on the anthropometric indices. In the methodology, the authors mentioned that BP was measured in the case and control groups. However, it was not obvious that the authors had referred to a specific BP reference in evaluating the measured BP of the studied cohort. To my knowledge, reference percentiles for BP for healthy Iranian children and adolescents, aged one month to 18 years, have been constructed in 2016 to be applied in the clinical field and researches (2). Similarly, the evaluation of BMI necessitates population-specific BMI percentiles. It was not obvious which BMI reference the authors had referred to in the study methodology. To my knowledge, BMI reference standard values have been constructed for Iranian children and adolescents in 2006 (3). Recently, the first Iranian BMI-adjusted BP curves in children and adolescents is launched and is expected to reveal a more precise picture of HT prevalence and a more reliable classification of HT (4). I presume that the employment of that new BMI-adjusted BP curves in a large scale multicenter study could better address the correlation of HT with NE.

References

  • 1.

    Yousefichaijan P, Rezagholi Zamnjany M, Soltani P, Ghandi Y, Rafiei M, Bayat S. Assessment of blood pressure in primary non-monosymptomatic nocturnal enuresis. J Compr Ped. 2017;9(4). e62612. https://doi.org/10.5812/compreped.62612.

  • 2.

    Ataei N, Hosseini M, Fayaz M, Navidi I, Taghiloo A, Kalantari K, et al. Blood pressure percentiles by age and height for children and adolescents in Tehran, Iran. J Hum Hypertens. 2016;30(4):268-77. [PubMed ID: 26016596]. https://doi.org/10.1038/jhh.2015.52.

  • 3.

    Razzaghy Azar M, Moghimi A, Montazer M, Sadeghi HM, Golnari P, Sadigh N, et al. Cross-sectional reference values for height, weight and body mass index of school children living in Tehran, Iran. Ann Hum Biol. 2006;33(4):471-9. [PubMed ID: 17043038]. https://doi.org/10.1080/03014460600802478.

  • 4.

    Ataei N, Baikpour M, Hosseini M, Yousefifard M, Fayaz M, Ataei F, et al. Blood pressure nomograms for children and adolescents by age and body mass index in Tehran, Iran. Iran J Public Health. 2017;46(3):368-79. [PubMed ID: 28435823]. [PubMed Central ID: PMC5395533].