Behavior of inflammatory markers of myocardial injury in cardiac surgery: laboratory correlation with the clinical picture of postpericardiotomy syndrome.
OBJECTIVE
To verify the association of serum markers of myocardial injury, such as troponin I, creatinine kinase, and creatinine kinase isoenzyme MB, and inflammatory markers, such as tumor necrosis factor alpha (TNF-alpha), C-reactive protein, and the erythrocyte sedimentation rate in the perioperative period of cardiac surgery, with the occurrence of possible postpericardiotomy syndrome.


METHODS
This was a cohort study with 96 patients undergoing cardiac surgery assessed at the following 4 different time periods: the day before surgery (D0); the 3rd postoperative day (D3); between the 7th and 10th postoperative days (D7-10); and the 30th postoperative day (D30). During each period, we evaluated demographic variables (sex and age), surgical variables (type and duration, extracorporeal circulation), and serum dosages of the markers of myocardial injury and inflammatory response.


RESULTS
Of all patients, 12 (12.5%) met the clinical criteria for a diagnosis of postpericardiotomy syndrome, and their mean age was 10.3 years lower than the age of the others (P=0.02). The results of the serum markers for tissue injury and inflammatory response were not significantly different between the 2 assessed groups. No significant difference existed regarding either surgery duration or extracorporeal circulation.


CONCLUSIONS
The patients who met the clinical criteria for postpericardiotomy syndrome were significantly younger than the others were. Serum markers for tissue injury and inflammatory response were not different in the clinically affected group, and did not correlate with the different types and duration of surgery or with extracorporeal circulation.
Köhler
Ilmar
I
Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul. i.kohler@terra.com.br
Saraiva
Paulo J
PJ
Wender
Orlando B
OB
Zago
Alcides J
AJ
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015415:Biomarkers / Q000097:blood; D015331:Cohort Studies; D003402:Creatine Kinase / Q000097:blood*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009205:Myocarditis / Q000097:blood* / Q000209:etiology; D011185:Postpericardiotomy Syndrome / Q000097:blood* / Q000209:etiology; D019616:Thoracic Surgical Procedures; D019210:Troponin I / Q000097:blood*; D014409:Tumor Necrosis Factor-alpha / Q000378:metabolism
D015415:Biomarkers; D019210:Troponin I; D014409:Tumor Necrosis Factor-alpha; D003402:Creatine Kinase