{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T20:55:33Z","timestamp":1791233733347,"version":"4.1.0"},"reference-count":16,"publisher":"BMJ","issue":"12","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2019,11,10]]},"published-print":{"date-parts":[[2019,12]]},"abstract":"<jats:p>\n                    Vitamin B\n                    <jats:sub>12<\/jats:sub>\n                    deficiency and its sequelae are well described and reported, especially in vegetarians. However, its association with haemodynamic instability is not well identified. We report a case of a young man, previously healthy, presenting with fever, hypotension requiring vasopressors and pancytopenia. Extensive workup was unrevealing for possible infective, inflammatory or endocrine causes except for vitamin B\n                    <jats:sub>12<\/jats:sub>\n                    deficiency. Fever and haematological parameters stabilised after adequate supplementation of cyanocobalamin (vitamin B\n                    <jats:sub>12<\/jats:sub>\n                    ).\n                  <\/jats:p>","DOI":"10.1136\/bcr-2019-232677","type":"journal-article","created":{"date-parts":[[2019,12,6]],"date-time":"2019-12-06T05:06:01Z","timestamp":1575608761000},"page":"e232677","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":4,"title":["Hypotension: an unusual presentation of vitamin B\n                    <sub>12<\/sub>\n                    deficiency, with complete recovery following cyanocobalamin therapy"],"prefix":"10.1136","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4631-9899","authenticated-orcid":false,"given":"Zohaib","family":"Yousaf","sequence":"first","affiliation":[{"name":"Internal Medicine, Hamad Medical Corporation Department of Medical Education, Doha, Qatar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Almurtada","family":"Razok","sequence":"additional","affiliation":[{"name":"Internal Medicine, Hamad Medical Corporation Department of Medical Education, Doha, Qatar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Abdel-Naser","family":"Elzouki","sequence":"additional","affiliation":[{"name":"Internal Medicine, Hamad Medical Corporation Department of Medical Education, Doha, Qatar"},{"name":"Clerkship Department, Qatar University College of Medicine, Doha, Ad Dawhah, Qatar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Taher","family":"Sabobeh","sequence":"additional","affiliation":[{"name":"Internal Medicine, University of Missouri Kansas City, Kansas City, Missouri, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2019,12,5]]},"reference":[{"key":"2025082708435825000_12.12.e232677.1","doi-asserted-by":"crossref","unstructured":"Surendran S , Adaikalakoteswari A , Saravanan P , et al . 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