Bozkurt, Hayrunnisa BekisCelik, Mustafa2024-03-132024-03-1320210937-44771434-4726https://doi.org/10.1007/s00405-020-06412-xhttps://hdl.handle.net/20.500.12662/3506Objective The possible etiological relationship of the vitamin D with laryngomalacia is unclear. The aim of the study was to demonstrate the relationship between laryngomalacia and vitamin D levels. Methods Twenty-three non-syndromic babies under the age of 1 year who were diagnosed with laryngomalacia were included in the study group. Forty healthy babies were included in the control group. The detailed anamnesis was obtained and a complete systemic physical examination, a flexible endoscopic laryngeal examination, and laboratory tests [calcium (Ca), phosphorus (P), alkaline phosphatase (ALP), parathormone (PTH), alanine transaminase (ALT), aspartate transaminase (AST), blood urea nitrogen (BUN), creatinine (Cre), and 25-hydroxy vitamin D (25-OH D)] were performed in all patients. All laboratory tests of the groups were compared. Results It was observed that there was no significant difference in the parameters that could affect vitamin D levels, namely type of feeding, vitamin D supplement intake, and the season when the serum sample was taken (p > 0.05). The vitamin D level was significantly lower (p = 0.003,p < 0.05) and the P and ALP levels were significantly higher (p = 0.016 andp = 0.001, respectively;p < 0.05) in the laryngomalacia group. Although the correlation between vitamin D and PTH was not statistically significant according to the Pearson correlation analysis, it was lower in the laryngomalacia group compared to the control group (p = 0.381,p > 0.05). Conclusion In this study, it was observed that the vitamin D levels were lower in infants with laryngomalacia compared to the control group. We consider that vitamin D deficiency may be a factor in the etiology of laryngomalacia with a yet-to-be-clarified etiology.eninfo:eu-repo/semantics/closedAccessLaryngomalaciaVitamin DEtiologyStridorInfantArticle10.1007/s00405-020-06412-x2-s2.0-85092234905739333026500Q1733278WOS:000577374900002Q2