title: Myocardial perfusion grade and survival after percutaneous transluminal coronary angioplasty in patients with cardiogenic shock.
abstract: We sought to evaluate myocardial reperfusion and its prognostic value after percutaneous transluminal coronary angioplasty (PTCA) in patients admitted for cardiogenic shock. Lack of myocardial reperfusion despite restored coronary flow affects the survival of patients with acute myocardial infarction (AMI). Myocardial blush grade (MBG) is an angiographic measure of myocardial perfusion. We assessed MBG in 41 consecutive patients admitted to our department within 12 hours from the onset of AMI and in cardiogenic shock. PTCA was successful in 83% of patients. Thrombolysis In Mycardial Infarction (TIMI) grade 3 flow was demonstrated in 22 patients (53%). MBG 2/3 was found in 14 patients (34%); among them, 12 had TIMI 3 flow. Compared with patients with MBG 2/3, those with MBG 0/1 were older (71 +/- 11 vs 57 +/- 13 years, p = 0.001), had a higher prevalence of diabetes (48% vs 14%, p = 0.04) and hypertension (63% vs 29%, p = 0.04), showed a trend toward longer ischemic time (6.1 +/- 2.4 vs 4.9 +/- 1.1), and had larger enzymatic infarct size (peak creatine kinase 7,690 +/- 3,516 vs 5,500 +/- 2,977 IU/L). Mortality was higher in patients with MBG 0/1 both in the hospital (81% vs 14%, p <0.001) and at follow-up (81% vs 29%, p = 0.001). After adjustment by multivariate analysis, MBG 0/1 (odds ratio 16, p = 0.01) and age (odds ratio 3.8/10 years, p = 0.04) were correlated with in-hospital mortality. MBG 2/3 was achieved in a few patients in cardiogenic shock after AMI who were treated with PTCA; this was a strong predictor of in-hospital survival. Also, risk stratification after mechanical revascularization should include assessment of restoration of myocardial reperfusion.
authors.affiliation: Department of Cardiology, University of Padova Medical School, Padua, Italy. giuseppe.tarntini.1@unipd.it
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Tarantini
authors.forename: Angelo
authors.initials: A
authors.lastname: Ramondo
authors.forename: Massimo
authors.initials: M
authors.lastname: Napodano
authors.forename: Claudio
authors.initials: C
authors.lastname: Bilato
authors.forename: Gianbattista
authors.initials: G
authors.lastname: Isabella
authors.forename: Renato
authors.initials: R
authors.lastname: Razzolini
authors.forename: Sabino
authors.initials: S
authors.lastname: Iliceto
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015906:Angioplasty, Balloon, Coronary; D017023:Coronary Angiography; D003326:Coronary Circulation / Q000502:physiology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007558:Italy; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000401:mortality / Q000628:therapy; D015425:Myocardial Reperfusion; D011183:Postoperative Complications / Q000209:etiology* / Q000401:mortality* / Q000503:physiopathology; D011237:Predictive Value of Tests; D011446:Prospective Studies; D012720:Severity of Illness Index; D012770:Shock, Cardiogenic / Q000401:mortality* / Q000628:therapy*; D013318:Stroke Volume / Q000502:physiology; D016019:Survival Analysis; D015912:Thrombolytic Therapy; D016896:Treatment Outcome