{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,16]],"date-time":"2025-10-16T20:18:53Z","timestamp":1760645933463,"version":"3.40.4"},"reference-count":14,"publisher":"BMJ","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["BMJ Case Reports"],"abstract":"<jats:title\/><jats:p>The authors present the case of a 61-year-old woman who was troubled by regular episodes of throat discomfort, headache, dyspnoea and tingling sensation in the upper limbs. These were associated with occasional episodes of transient loss of consciousness accompanied by urinary incontinence over a period of 5\u2005years. As these episodes became increasingly frequent, she was referred to a neurologist. Initial neurological assessment and investigations had a negative diagnostic yield and she was therefore referred for cardiac review. A repeat 24\u2005h Holter revealed intermittent episodes of significant ST-segment elevation associated with a Mobitz type II atrio-ventricular block correlating with her symptoms. Her echocardiography and coronary angiography were normal; hence a diagnosis of Prinzmetal angina was made. She was treated appropriately with nitrates and a calcium channel blocker and followed up in cardiology clinic with no further recurrence of symptoms.<\/jats:p>","DOI":"10.1136\/bcr.01.2012.5539","type":"journal-article","created":{"date-parts":[[2012,6,15]],"date-time":"2012-06-15T12:41:32Z","timestamp":1339764092000},"page":"bcr0120125539","source":"Crossref","is-referenced-by-count":3,"title":["An unusual cause of blackout with transient loss of consciousness: Prinzmetal angina"],"prefix":"10.1136","volume":"2012","author":[{"given":"Mohammed Majid","family":"Akhtar","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rashid","family":"Akhtar","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Abid","family":"Akhtar","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Javed","family":"Akhtar","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2012,6,15]]},"reference":[{"key":"2025042702131032000_2012.jun13_1.bcr0120125539.1","doi-asserted-by":"publisher","DOI":"10.1186\/1532-429X-13-S1-P322"},{"key":"2025042702131032000_2012.jun13_1.bcr0120125539.2","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9343(59)90003-8"},{"key":"2025042702131032000_2012.jun13_1.bcr0120125539.3","doi-asserted-by":"publisher","DOI":"10.1161\/CIRCULATIONAHA.108.843474"},{"key":"2025042702131032000_2012.jun13_1.bcr0120125539.4","doi-asserted-by":"crossref","first-page":"38","DOI":"10.1016\/0735-1097(95)00423-8","article-title":"Clinical observation of spontaneous anginal attacks and multi-vessel spasm in variant angina pectoris with normal coronary arteries: evaluation by 24-hour 12-lead electrocardiography with computer analysis","volume":"27","author":"Onaka","year":"1996","journal-title":"J Am Coll Cardiol"},{"key":"2025042702131032000_2012.jun13_1.bcr0120125539.5","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijcard.2005.03.008"},{"key":"2025042702131032000_2012.jun13_1.bcr0120125539.6","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9149(81)90307-6"},{"key":"2025042702131032000_2012.jun13_1.bcr0120125539.7","doi-asserted-by":"publisher","DOI":"10.1002\/ccd.1810080404"},{"key":"2025042702131032000_2012.jun13_1.bcr0120125539.8","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.74.5.955"},{"key":"2025042702131032000_2012.jun13_1.bcr0120125539.9","doi-asserted-by":"publisher","DOI":"10.1016\/S0735-1097(02)01690-X"},{"key":"2025042702131032000_2012.jun13_1.bcr0120125539.10","doi-asserted-by":"publisher","DOI":"10.1161\/CIR.0b013e3181d8d759"},{"key":"2025042702131032000_2012.jun13_1.bcr0120125539.11","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijcard.2008.12.138"},{"key":"2025042702131032000_2012.jun13_1.bcr0120125539.12","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijcard.2006.08.087"},{"key":"2025042702131032000_2012.jun13_1.bcr0120125539.13","first-page":"177","article-title":"Recurrent ventricular fibrillation in a patient with prinzmetal angina pectoris\u2014case report","volume":"56","author":"Hoffmann","year":"1999","journal-title":"Przeglad Lekarski"},{"key":"2025042702131032000_2012.jun13_1.bcr0120125539.14","doi-asserted-by":"publisher","DOI":"10.1510\/icvts.2005.107128"}],"container-title":["BMJ Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bcr.01.2012.5539","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,4,27]],"date-time":"2025-04-27T09:13:19Z","timestamp":1745745199000},"score":1,"resource":{"primary":{"URL":"https:\/\/casereports.bmj.com\/lookup\/doi\/10.1136\/bcr.01.2012.5539"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2012,6,15]]},"references-count":14,"alternative-id":["10.1136\/bcr.01.2012.5539"],"URL":"https:\/\/doi.org\/10.1136\/bcr.01.2012.5539","relation":{},"ISSN":["1757-790X"],"issn-type":[{"type":"electronic","value":"1757-790X"}],"subject":[],"published":{"date-parts":[[2012,6,15]]}}}