RT Journal Article SR Electronic T1 Prevalence of cerebral venous thrombosis with the use of oral contraceptive pills during the Holy month of Ramadan JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 1063 OP 1069 DO 10.15537/smj.2020.10.25397 VO 41 IS 10 A1 AlSheef, Mohammed A1 Alotaibi, Mastourah A1 Zaidi, Abdul Rehman Z. A1 Alshamrani, Areej A1 Alhamidi, Aroub A1 Zaidi, Syed Ziauddin A. A1 Alanazi, Noor A1 Alhathlool, Sarah A1 Alarfaj, Ohoud A1 AlHazzaa, Mohammed A1 Kullab, Ghaydaa A1 Alboghdadly, Amany A1 Abu-Shaheen, Amani YR 2020 UL http://smj.org.sa/content/41/10/1063.abstract AB Objectives: To identify the epidemiologic profile of cerebral vein thrombosis (CVT) among fasting women using oral contraceptive pills (OCPs) during the holy month of Ramadan.Methods: This retrospective study was conducted on all patients diagnosed with CVT and using OCPs from records at a tertiary care hospital in Riyadh, Saudi Arabia during 2016-2017. The study participants were categorized into 2 groups (an intermittently fasting group during the holy month of Ramadan and a non-fasting group).Results: Out of 108 female patients with CVT, 36.1% were secondary to OCP, of whom 41% participants were fasting. The most affected site was the transverse sinus. Holocephalic headache was more common amongst fasting group (68.8%) compared to non-fasting group (30.4%) (p=0.025). Dehydration (p=0.003) amongst the fasting group and protein S deficiency (p=0.027) in the non-fasting group were identified as the 2 prominent risk factors. Unfractionated heparin was the most common anticoagulant therapies used during the initiation phase for non-fasting (36.4%) and fasting groups (50%).Conclusion: All women who are using OCP should undergo formal written risk assessments for factors of CVT. Our study suggests that the negative effects of OCPs use might outweigh its benefits; thus, it should be prescribed with caution, more so in fasting patients.