Changes in Cerebral Blood Flow Velocities Measured by Doppler Ultrasonography after Hypoxic-ischemic Injury in Newborns
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تعیین میانگین سرعت جریان خون شریان مغزی میانی در افراد دیابتیک
Background & Aim: Diabetes mellitus is one the most prevalent chronic diseases in Iran which has a considerable burden on health system. In addition, hyperglycemia is a well-established independent risk factor for ischemic stroke and the development of microvascular and macrovascular diseases in patients with diabetes. On the other hand, middle cerebral artery is one the most important cere...
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Background: Stroke is a multifactorial disorder, the most common cause being arterial occlusion. Transcranial Doppler Ultrasonography (TCD) is a common non-invasive method available for assessment the arterial blood flow of the brain. Objective: Assessment the hemodynamic parameters of cerebral arteries, using TCD device in patients suffering ischemic stroke. Materials and Methods: This descr...
متن کاملPrediction of symptomatic vasospasm after subarachnoid hemorrhage by rapidly increasing transcranial Doppler velocity and cerebral blood flow changes.
BACKGROUND AND PURPOSE Increased transcranial Doppler velocities and regional cerebral perfusion defects have been well demonstrated in patients with subarachnoid hemorrhage, but the clinical significance of these changes has not been clearly defined, particularly in the presymptomatic stage of cerebral vasospasm. We have tested the hypothesis that a rapid, massive rise in Doppler velocity deno...
متن کاملThe value of ultrasonography and Doppler sonography in prognosticating long-term outcomes among full-term newborns with perinatal asphyxia.
BACKGROUND AND OBJECTIVE The aim of the study was to determine the correlation of hypoxic-ischemic (HI) brain injury in full-term neonates detected via ultrasonography (USG) and blood flow parameters evaluated via Doppler sonography (DS) with long-term outcomes of mental and neuromotor development at the age of 1-year. MATERIALS AND METHODS In total, 125 full-term neonates (78 subjects of cas...
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Introduction: Nitric oxide seems to play a dual role in ischemia/reperfusion injury. Few studies have investigated whether it exacerbates or improves brain edema. In the present study, we inhibited the activity of nitric oxide synthase by L-NAME and evaluated the cerebral infarct volume, tissue swelling and brain edema, alongside the measurement of blood flow of the ischemic region. Methods...
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