RT Journal Article SR Electronic T1 The response patterns of infantile spasms to treatments in 156 patients JF Neurosciences Journal JO Neurosciences (Riyadh) FD Prince Sultan Military Medical City SP 40 OP 44 DO 10.17712/nsj.2022.1.20210116 VO 27 IS 1 A1 Muhammad T. Alrifai A1 Ahmad R. Al-Rumayyan A1 Waleed A. Al-Tuwaijri A1 Duaa M. Baarmah A1 Safiyyah A. Asiri A1 Ahmad H. Bali A1 Muatassem A. Alsadhan A1 Shaden H. Alsugheir YR 2022 UL http://nsj.org.sa/content/27/1/40.abstract AB Objectives: To report the efficacy of intravenous (IV) synthetic ACTH (Tetracosactide) in the treatment of infantile spasms.Methods: This is a retrospective chart review of patients with a diagnosis of infantile spasms conducted at the Pediatric Department of King Abdulaziz Medical City (KAMC) in Riyadh, Saudi Arabia, from 01-01-2005 to 31-12-2019.Results: Of the 156 cases, 141 were treated initially with vigabatrin (VGB) with a complete response seen in 42(30%). Synthetic ACTH (Tetracosactide) IV injections were used in a total of 52 cases with response in 25(48%). Of the 35 cases which initially failed with VGB, 20(57%) responded to synthetic ACTH. The injections were used as a first line in 8 cases with response in 6(75%). The response to oral steroids was seen in 4/14(29%) cases. A relapse was seen in 2/42(5%) of patients treated with VGB and in 5/25(20%) of those who were treated with synthetic ACTH. The response was highest in the idiopathic group with 7/7(100%). Epilepsy at 2 years was seen in 26/50(52%) and 50/57(88%) of the responders and non-responders, respectively (p=0.000). Only 14/156(9%) of cases had a fair neurological outcome. All of them were from the responder groupConclusion: The response to VGB is suboptimal, while the response to synthetic ACTH is encouraging making it a good alternative for natural ACTH as a potential first line therapy in infantile spasms.