All cases had bilateral TCD monitoring of MCA /ACA or PCA vessels for minimum of 50 minutes. Methods: We did retrospective analysis of all stroke and TIA patients who were evaluated in the University of Alberta hospital between January 2006 until July 2013. We are describing characteristics of positive MES in our study.Īims: Our study's aim is to describe the characteristics of positive MES on Trancranial Power M mode Doppler (PMD). Introduction: Micro embolic signal (MES) found on transcranial Doppler (TCD) ranges from harmless air bubbles to large solid particulate emboli from the heart and large vessels. G Basir 1, A Ahmad 1, Y Abdullah 1, A Tahir 1, C Dersken 1, K Khan 1, A Shuaib 1, M Saqqur 1 WSC-1103 Acute Neuroimaging: Characteristics of positive microembolus (MES) (13.5% for positive MES versus 6.5% for negative one (P = 0.100).Ĭonclusions: Our study showed that the presences of multiple infarcts on neuroimaging and valvular heart disease on echo are associated with positive MES on TCD emboli monitoring. Patients with positive MES on TCD monitoring are twice risk of stroke recurrence than ones with negative MES. Number of infarcts was associated with increased odds of having positive MES (OR 2.98 (95% C1 1.75–5.10) P ≤ 0.000). The Risk of MES positive was calculated using multiple logistic regression analysis. Mean age was 54.7(20), 67.3% were male, Median duration of monitoring was 50 minutes (27.5–60). Results: 49 patients out of 455 (10.7%) who underwent TCD monitoring were MES positive. Positive MES TCD monitoring was defined by the presence of ≥1 MES on either hemisphere. All cases had bilateral TCD monitoring of MCA /ACA or PCA vessels.
In addition it also helps in defining the underlying pathophysiology and assessing the response to various treatments.Īims: Our study's aim is to evaluate the yield of TCD in detecting MES, predictors for positive MES and recurrence of stroke. Micro embolic signals (MES) are reported to be an independent risk factor for stroke. Introduction: Micro embolic signal (MES) detection is one of the key applications of TCD in stroke. G Basir 1, A Ahmad 1, A Tahir 1, Y Abdullah 1, C Dersken 1, K Khan 1, A Shuaib 1, M Saqqur 1ġ Neurology (Stroke), University of Alberta Hospital, Edmonton, Canada WSC-1067 Acute Neuroimaging: Microembolus (MES) detection by TCD in acute stroke service
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The cranial CT showed complete resolution (Fig. 3).įig. 3 Control cranial CT showed full resolution. The neurological examination of the patient 48 hours after the incident was normal. The patient was admitted to the intensive care and put on supportive and anti-edema therapy. Cranial CT revealed diffusely increased density in the cisternal spaces, suggesting subarachnoid hemorrhage associated with extravasation of the contrast agent used (Fig. 2). The NM showed that the patient was somnolent, his cooperation was restricted, spatial and temporal orientation was reduced, speech was slightly dysartrhic, and bilateral Babinski was positive.
However, some cases were reported to present as subarachnoid hemorrhage in the cranial computerized tomography due to the extravasation of the contrast agent used during angiography by disrupting the blood brain barrier.Ĭase: Our case who underwent carotid angiography and stent implantation for carotid stenosis was seen to show impairment in his general condition and consciousness about 2 hours after the procedure (Fig. 1). Hemorrhagic complications may include intracerebral hemorrhages, like subarachnoid hemorrhage. These damages may present in an embolic, hemodynamic and hemorrhagic nature. Introduction: Various types of brain damage may occur during angiographic procedures. WSC-1515 Acute Neuroimaging: Contrast agent neurotoxicity mimicking subarachnoid hemorrhage during carotid angiography: Case reportĪ N Alagoz 1, N Can Ucaroglu 1, A Boluk 1ġ Neurology, Sakarya University Medicine Faculty Researh and Education Hospital, Sakarya, Turkey
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