The posterior circulation is part of the brain circulation that is subject to stroke. Strokes which involve the posterior circulation account for approximately 25% of all ischemic strokes, and about 10-20% of all hemorrhagic strokes. While the mortality rate from ischemic strokes in posterior circulation could be as low as 4%, the cerebellar and pontine hemorrhages carry a mortality rate close ...

· Posterior Circulation Two vertebral arteries originate from the first part of the subclavian arteries. These join intra-cranially to form the basilar artery and supply the posterior cerebral circulation. This is the main blood supply to the brain stem, cerebellum and posterior cerebrum. · Anterior Circulation Both internal carotid arteries arise from the carotid bifurcation in the neck. Intra...

Posterior circulation stroke refers to the vascular occlusion or bleeding, arising from the vertebrobasilar vasculature of the brain. Clinical studies show that individuals who experience posterior circulation stroke will develop significant brain injury, neurologic dysfunction, or death. Yet the therapeutic needs of this patient subpopulation remain largely unknown. Thus understanding the caus...

OBJECTIVE To evaluate the frequencies of symptoms and signs in patients with posterior circulation ischemia in a large case series of prospectively collected patients. DESIGN Case series. SETTING Outpatient and inpatient setting at the New England Medical Center, a tertiary care referral center in Boston, Massachusetts. PATIENTS Consecutive sample of 407 adult patients who had stroke and/...

BACKGROUND AND PURPOSE We evaluated a mechanical thrombectomy protocol to treat acute stroke and report the angiographic results and clinical outcomes. METHODS Patients with anterior circulation strokes <8 hours and posterior circulation strokes <12 hours were treated at a single center over 10 months. Patients were excluded if they were candidates for intravenous tissue plasminogen activator...

INTRODUCTION: Although only 10% of strokes are due to involvement of the posterior circulation, they can be associated with a very poor prognosis. Therefore, accurately predicting stroke outcome from a set of variables may identify high-risk patients and guide treatment approaches, leading to decreased morbidity. In this study, our aim was to design and compare different machine learning method...

Among 407 New England Medical Center Posterior Circulation Registry (NEMC-PCR) patients, 59% had strokes without transient ischemic attacks (TIAs), 24% had TIAs before strokes, and 16% had only posterior circulation TIAs. Embolism was the commonest stroke mechanism accounting for 40% of cases (24% cardiac origin, 14% arterial origin, 2% had potential cardiac and arterial sources). In 32%, large...

Dizzy patients present a significant diagnostic challenge to the emergency clinician. The discrimination between peripheral and central causes is important and will inform subsequent diagnostic evaluation and treatment. Isolated vertigo can be the only initial symptom of a posterior circulation stroke. The sensation of imbalance especially raises this possibility. Research involving strokes of ...