Pyrexia, procalcitonin, immune activation and survival in cardiogenic shock: the potential importance of bacterial translocation

International Journal of Cardiology
F M BrunkhorstS D Anker

Abstract

Exposure to bacterial endotoxin, perhaps due to bowel congestion or ischaemia and altered gut permeability, may result in immune activation that is characteristic for patients with severe heart failure. It is known that blood procalcitonin rises in response to bacterial endotoxin exposure. We measured procalcitonin in a group of 29 patients with acute cardiogenic shock and no sign of infection (all without bacteraemia) and 26 with septic shock. Blood was analysed for procalcitonin, interleukin-6, tumour necrosis factor-alpha (TNF-alpha), c-reactive protein (CRP) and neopterin. Patients were managed conventionally in an intensive care unit with no further experimental procedures. Three cardiogenic (10%) and seven septic shock patients (27%) survived. Most patients with acute heart failure surviving 12 h or more (18 of 20) developed a pyrexia (738.0 degrees C) of unknown origin in the absence of positive cultures, with a rise in procalcitonin (1.4+/-0.8 to 48.0+/-16.2 ng/ml, P<0.001), CRP (76.5+/-16.4 to 154.7+/-22.9 mg/l, P<0.001) and neopterin (20.7+/-3.5 to 41.2+/-6.7 nmol/l, P<0.001). Patients with septic shock had higher initial levels of cytokines, and higher peak levels. Those with heart failure surviving (n=3) and those d...Continue Reading

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