The prevalence of underweight in the present study was 43.1% 95%CI(37.72%, 48.43%) this was relatively similar to a study done at Uganda and Egypt in which the prevalence was 42.5% and 44%respectively(16,17). In contrast the prevalence of underweight in the study done in London was 11% (6). Also the result in this study is higher than the prevalence in a study done in Nigeria which was 20.5% (10).
The prevalence of wasting in the present study is 144(38.6%) 95%CI (33.64%, 43.57%). In consistent with this a study done in Egypt and Nigeria the prevalence was 37.5% ,and 41.1% respectively (10,18). But in contrast to the present study a study in the Chile found only 12.1% (19). The studies in Egypt also founds 6.7%, and 23.8%of the participants to be wasted(16,20) which had less prevalence compared to the present study. A study done in Hawassa Ethiopia reveals that 63% of the study subjects were wasted this is higher compared to the present study(14).
The prevalence of stunting in the present study is 134(35.9%) 95%CI (31.03%, 40.82%). In contrast with this a study in Egypt found 61.9% of the participants to be stunted this shows a big discrepancy with the present study(20). The results in the study done in Thailand shows less prevalence of stunting when compared with the current study which is about 16%(21).
The prevalence of overweight and obesity in the present study reported to be 4% 95%CI(2.2%,6.3%) and 4.3% this was consistent with the result of the study done in Thailand in which the prevalence’s of overweight was 3% (21).
The commonest type of cardiac lesion from the acyanotic group of CHD in the present study was VSD which accounts for 31.8% and from the cyanotic CHD group TOF was the major type which accounts for 40%. Similar to this study done in India, Indonesia, Thailand, Iran, Egypt, Nigeria and Hawassa, Ethiopia which VSD and TOF was the major type of lesions from the acyanotic and cyanotic CHD respectively although there was a difference in prevalence VSD that ranges between (13%-56%) and TOF (10.5%-56%) (10,13,14,20–23). The discrepancy may be explained by the difference in study setups most of the studies were single-center studies so the sample may be small in size to explain the real prevalence.
In the present study child age, being sick in the past two weeks, age at getting surgery, and hemoglobin level was associated with wasting. And stunting was found to be associated with occupation of the parent, bottle feeding, age at time of surgery, and level of SPO2. On the other hand underweight was associated with age, sickness, pulmonary hypertension, level of hemoglobin, and SPO2.
Compared to children aged 0–12 month children aged 13months-5 years were less likely to be wasted in the present study [AOR = 0.434, 95% CI:(0.231,0.816)] likewise a study done in Hawassa Ethiopia also mentioned children under age 1 year are more likely to be malnourished(14). also a study in China revealed that children age less than one years were more likely to be malnourished with high prevalence in the three indicators(24).
Similar to the current study, studies done in India, Egypt, Nigeria and Ethiopia found a significant association between malnutrition and pulmonary hypertension, low SPO2 and low Hgb(10,13,14,18,20,22,25). These reports are in line with our study the plausible explanation for the similarity is as oxygen and hemoglobin are useful in the metabolism of nutrients in a human body so decreasing of this two in the cells may cause disturbance in normal metabolism which may lead to malnutrition.
Compared to children who are not diagnosed with pulmonary hypertension children diagnosed with pulmonary hypertension were 1.885 times more likely to be underweight. This could be explained by that pulmonary hypertension increase energy requirement as the heart works hard to get blood to the lungs and the rest of the body against high pressure in the blood vessels and it also precipitates decreased nutritional intake and interrupts feeding due to the feeling of fatigue and shortness of breath this could lead to malnourishment.
Age at surgery was associated with wasting and stunting in which children having treatment later have a relatively high risk of being malnourished [AOR = 1.072, 95%CI:(1.001,1.049)], and [AOR = 1.040, 95%CI:(1.007,1.074)] respectively. The results were consistent with the study in India, Thailand, and Nigeria older age at corrective surgery was one of the predictor of malnutrition. Different literatures reveals that early corrective surgery found to have a good impact on positive outcomes of nutritional status(21,25,26).
Limitation
The sampling technique in this study was consecutive sampling technique because it’s difficult to generalize the result. Using single 24 hour recall method is also another limitation for this study because there will be misinformation or biased response