Children & Adolescent Health Research Center, Resistant Tuberculosis Institute, Zahedan Univ Med Sci, Zahedan 9816743111, Iran.
Breath-holding spells (BHs) are brief periods when young children stop breathing for up to 1 minute and widely recognized type of non-epileptic severe occasions in early stages of childhood. This study aimed to evaluate QTd and QTc changes in children with breath-holding spells compared with healthy children.
Materials and methods
This case-control study was conducted to evaluate ECG parameters' changes in the 90 children with breath-holding spells compared to 90 healthy children, who were included as controls, without any breath - holding in pediatric neurology clinic of Ali Asghar Hospital of Medical Sciences University of Zahedan (ZaUMS), Iran. in 2018. Electrocardiography measures were measured from 12-lead surface electrocardiograms of the patients and the control group. Data were analyzed using SPSS software version 18.0.
In the study females were 46(51.1%) and 35(38.9% in controls and Breath Holding patients, respectively. QT max (p=0.002), S in V1 (P<0.001), R in V5(P<0.001), R in aVL(P<0.001), S in V3(p=0.002), LV mass(P<0.001), QTd (P<0.001), QTc max (P<0.001), and QTcd (P<0.001) were different in patients compared to controls significantly (P<0.05). QTd (P<0.001), QTc max (P=0.03) and QTcd (P<0.001) were higher in pallid attacks significantly. QT max (p=0.039) and QT min (p=0.039) were different in boys and girls so that QT max and QT min were higher in girls.
From the present study concluded that QT, QTc, QTd and QTcd were higher in BHs. QTd, QTc max and QTcd were higher in pallid and QT max and QT min were higher in girls. However, in spite of some studies, we suggest that it is necessary to obtain ECG parameters to assess rhythm abnormality in children with BHs.