ABSTRACT
BACKGROUND: Acute promyelocytic leukemia (APL) has long been associated with coagulation disorders. The proposed mechanism is a combination of fibrinolysis, proteolysis, platelet dysfunction, thrombocytopenia, and possibly disseminated intravascular coagulation. Hemorrhagic complications are prominent. OBSERVATIONS: In this case, a 25-year-old female with newly diagnosed APL developed extensive cerebral venous thrombosis (CVT) and was initiated on a protocol with idarubicin and all-trans retinoic acid. The general recommendation for treating CVT is anticoagulation to stabilize the existing thrombus and prevent propagation. The patient was initiated on a heparin drip, but her clinical course was complicated by subdural hemorrhage (SDH) and epidural hemorrhage in the setting of thrombocytopenia. Anticoagulation was held, and her CVT propagated on follow-up imaging. To restart anticoagulation for CVT with a limited risk of SDH, the authors pursued middle meningeal artery (MMA) embolization. The patient was transitioned to apixaban and discharged to home. LESSONS: MMA embolization enables safe anticoagulation in patients with concomitant CVT and SDH. The authors report the complex clinical course and effective management of this rare clinical scenario.
ABSTRACT
PURPOSE OF REVIEW: Alterations in atmospheric pressure have been long associated with headaches. The purpose of this review article is to investigate the association of barometric pressure with headache, classifying into two broad categories primary headache disorders (barometric pressure triggering migraine or tension-type headache) and secondary headache disorders (barometric pressure triggering high-altitude headache and headache attributed to airplane travel), discussing the pathophysiology and possible treatments. RECENT FINDINGS: Multiple studies have been performed with inconsistent results regarding the directionality of the association between atmospheric pressure changes and triggering of primary headache disorders, chiefly headaches. Atmospheric pressure is also a trigger of two secondary headache disorders, i.e., high-altitude headache and headache attributed to airplane travel. Hypothesized mechanisms include excitation of neurons in trigeminal nucleus, central and peripheral vasoconstriction, barotrauma, and hypoxia. There are no randomized clinical trials regarding effective acute or preventive treatments. Greater understanding of pathophysiology may enable both acute and preventive treatments for headaches triggered by changes in barometric pressure. Further studies on the subject are needed.