Neurologic complications of disseminated intravascular coagulation.

Sixty-five patients with a bleeding disorder and coexistent neurologic abnormalities were examined over a 4-year period to determine: (1) the CNS pathology due to disseminated intravascular coagulation (DIC); (2) the clinical setting in which CNS dysfunction due to DIC occurs; and (3) the neurologic complications of DIC as opposed to those patients dying with concurrent DIC. Criteria for inclusion in the study were the combination of: (1) a neurologic disorder in a patient with clinical evidence of a bleeding disorder; and (2) evidence of DIC by laboratory criteria or the detection of fibrin thrombi in multiple organs at postmortem. Twenty-four of 65 patients met these diagnostic criteria, including 14 men and 10 women, aged 24 to 84 years. Autopsies were obtained in 17 patients. These patients were divided into two groups Group I consisted of 10 patients with evidence of cerebral bleeding or infarction at the onset of DIC. Group II consisted of 14 patients who met the diagnostic criteria for DIC but did not demonstrate postmortem evidence of hemorrhage or infarction in the brain. Patients with malignancy who present with findings suggestive of a large-vessel stroke are likely to have DIC and nonbacterial thrombotic endocarditis. The most common neurologic complications of DIC are large vessel occlusion, obtundation and coma, subarachnoid hemorrhage, and multiple cortical and brainstem hemorrhages and infarction.