Association of D-dimer/fibrinogen ratio and combination of D-dimer and fibrinogen with prognosis of stroke and stroke subtypes.

Objective: Here, we aim to investigate whether D-dimer (DD)/fibrinogen (FIB) ratio or combination of DD and FIB contribute to the prognosis of stroke and stroke subtypes.

Methods: 1413 patients with acute ischemic stroke (AIS) were recruited. We measured DD and FIB levels on admission and followed up with patients at discharge and 90-day following discharge. We analyzed the association between DD/FIB ratio and poor function outcome of AIS and different AIS subtypes. Similarly, logistic regression model was used to estimate the combined effect of DD level and FIB level on the poor outcomes of stroke and stroke subtypes.

Results: The patients with DD+FIB+ or high DD/FIB ratio tended to have the high risk of severe neurological deficits at both discharge and 90-day following discharge. In the subgroup analysis, high DD/FIB ratio was significantly associated with the poor function outcome in cardioembolism (CE) and large-artery atherosclerosis (LAA) subtypes. DD+FIB+ was strongly associated with the poor function outcome in CE subtype at discharge and 90-day.

Conclusion: DD/FIB ratio and combination of DD and FIB may have more significant prognostic value of stroke and stroke subtypes than either index of DD or FIB alone in AIS patients.