passages.id: split_8_test_786_passage
passages.type: progene_text
passages.text: Procedural complications or electrocardiogram changes occurred in only 49 % of the CK-MB - elevation cases ; CK-MB elevation was more common after nonballoon devices ( 19.5 % vs. 11.5 % after percutaneous transluminal coronary angioplasty ; p < 0.01 ) .