Some states award delegates to candidates on a winner-take-all basis, meaning that the candidate with the most votes in a state is awarded all of that state's delegates. Other states award delegates in proportion to each candidate's share of the primary vote.
Provocative angiography involves a full diagnostic angiogram followed by administration of intra-arterial procoagulant agents to identify an occult bleeding source in patients who have normal test results after lower gastrointestinal bleeding.
This case highlights the. importance of provocative digital subtraction angiography in making. the diagnosis. A 41-year-old man presented for outpatient neurological. evaluation for âlightheadednessâ of several yearsâ duration provoked by. leftward head rotation.