• Background There are no reports that describe complete flow control using concurrent transient rapid ventricular pacing or intravenous (IV) adenosine and afferent arterial balloon flow arrest to aid transvenous embolization of cerebral arteriovenous malformations (AVM). (bmj.com)
  • Anatomical AVM features, number of embolization stages, technique of concurrent transient rapid ventricular pacing and afferent arterial balloon flow arrest, complications, and clinical and radiological outcomes were recorded and tabulated. (bmj.com)
  • Conclusion Complete flow control using concurrent transient rapid ventricular pacing with afferent arterial balloon flow arrest technique is safe and feasible for transvenous embolization of select AVMs. (bmj.com)
  • Two patients experienced ischemia because of inadvertent occlusion of an arterial feeder. (nih.gov)
  • Primate studies have shown that complete occlusion of arterial supply to the retina results in reversible ischemic injury in up to 97 minutes. (medscape.com)
  • The effects of graded occlusion of the portal vein upon hepatic arterial blood flow were studied in anesthetized dogs to evaluate the so-called "reciprocal relationship" between portal venous flow and hepatic arterial flow in maintaining oxygenation of the liver. (unboundmedicine.com)
  • An obstruction that increased portal venous pressure to 20 mm Hg was accompanied by a transient increase in hepatic arterial blood flow without changing the other hemodynamic parameters. (unboundmedicine.com)
  • Release of portal venous occlusion was accompanied by a transient fall in hepatic arterial blood flow in this group of experiments. (unboundmedicine.com)
  • TY - JOUR T1 - Hemodynamics of experimental portal venous occlusion in dogs. (unboundmedicine.com)
  • The veins tend to be spared in hepatic venous occlusion in patients with Budd-Chiari syndrome, giving rise to hypertrophy of the caudate lobe and adjacent part of the right lobe. (medscape.com)
  • There may also be smaller strokes known as transient ischaemic attacks (TIAs) in which there is a temporary occlusion of a blood vessel depriving a region of the brain with oxygen. (news-medical.net)
  • Common manifestations include splenomegaly, macrovascular and microvascular events (eg, transient ischemic attacks, erythromelalgia, ocular migraine), and aquagenic pruritus (itching triggered by exposure to hot water). (msdmanuals.com)
  • Some patients have had ocular examinations during the transient vision loss event that demonstrate the visible vasospasm on clinical exam, fundus photography, or fluorescein angiography. (medscape.com)
  • From an ocular standpoint, and in the absence of subsequent retinal artery occlusions, vision usually stabilizes soon after the ischemic event. (medscape.com)
  • pathways can produce severe ocular defects such as Data analysis was carried out using Statistical transient monocular visual loss, visual field defect Package for Social Sciences (SPSS) for Windows, 1-3 or ocular motility restrictions. (who.int)
  • Causes of ischemic transient vision loss include giant cell arteritis, cerebrovascular ischemia, and retinal arteriolar emboli. (medscape.com)
  • The effect of moderate whole body hypothermia (300 C) on transient focal cerebral ischemia induced inflammatory injury was investigated. (banglajol.info)
  • Our results indicate that moderate hypothermia has a significant protective effect on the inflammatory injury induced by transient focal cerebral ischemia. (banglajol.info)
  • Induction of transient chemical ischemia resulted in unexpectedly large Na + influx, accompanied by considerable cell swelling. (jneurosci.org)
  • Magnetic resonance imaging (MRI) and histological studies in rat focal ischemia models using transient middle cerebral artery (MCA) occlusion indicate that reperfusion after an ischemic episode of 2- to 3-hour duration does not result in reduction of the size of the infarct. (nih.gov)
  • Transient forebrain ischemia leads to delayed death of the CA1 neurons in the hippocampus. (nih.gov)
  • Immunohistochemical and biochemical investigations of Ca2+/calmodulin-dependent protein kinase II(CaM kinase II) and protein phosphatase (calcineurin) after transient forebrain ischemia demonstrated that the activity of CaM kinase II was decreased in the CA1 region of the hippocampus early (6-12 hours) after ischemia. (nih.gov)
  • Although the availability of these devices has enabled the endovascular treatment of previously uncoilable and inoperable aneurysms, the use of stent-assisted coiling has brought with it other important considerations, including the necessity of aggressive antiplatelet therapy that limits its application in the setting of subarachnoid hemorrhage, and delayed stent-related issues such as the development of in-stent stenosis and parent vessel occlusion. (ajnr.org)
  • Whether the temporal retinal vessels are affected more often or whether the nasal retinal vessel occlusions are more often undetected is unclear. (medscape.com)
  • Compared to angioplasty alone, PTCRA/PTCA did not result in a higher incidence of major adverse cardiac events, but patients were more likely to experience vascular spasm, perforation and transient vessel occlusion. (cochrane.org)
  • By using left brachiocephalic vein occlusion, retrograde intracranial venous flow was found only in patients (5 of 10) versus controls. (medscape.com)
  • A survey of papers reporting results with stent-assisted aneurysm coiling through January 2011 was conducted to identify the prevalence of stent-related and other complications, occlusion rates, and clinical and angiographic follow-up data. (ajnr.org)
  • We obtained a total of 3.89% complications: 2.33% reflection vasovagal, 0.56% allergic skin reaction, anaphylactic shock 0.07%, 0.27% femoral hematoma, 0.26% transient neurological deficit, 0.12% permanent neurological deficit and no case of death. (thieme-connect.de)
  • Approximately 40-50% of patients with GCA have ophthalmologic complications, including visual loss secondary to A-AION, central retinal artery occlusion, homonymous hemianopsia or cortical blindness (uni- or bilateral occipital infarction) [ 6 ]. (intechopen.com)
  • Complications associated with MIGS, albeit infrequent and mostly transient, do occur despite a less invasive approach than trabeculectomy and tube shunt surgery. (medscape.com)
  • Together, rapidFLIM enabled the spatiotemporal visualization and quantification of neuronal Na + transients at unprecedented speed and independent from changes in cell volume. (jneurosci.org)
  • RapidFLIM, combined with improved correction schemes, enabled intensity-independent recording of neuronal Na + transients at unprecedented full-frame rates of 0.5 Hz. (jneurosci.org)
  • Approximately 3.5% in-stent stenosis and 0.6% stent occlusion were observed at angiographic follow-up. (ajnr.org)
  • If any lateralizing or focal findings are noted on the examination, then the diagnosis of transient global amnesia should be questioned. (medscape.com)
  • Two other patients experienced transient neurological deficits that resolved within 1 week of embolization. (nih.gov)
  • Embolic occlusions of the arteries supplying the eye are a common cause of transient vision loss in adults. (medscape.com)
  • Transient hypoxia of any part of the visual system can result in a temporary disturbance of vision. (medscape.com)
  • Vasospasm may cause a temporary reduction in blood flow to the visual system and transient vision loss. (medscape.com)
  • Possibly, these episodes are secondary to emboli transiently becoming lodged, causing temporary occlusions and then reperfusing the retina as the emboli are released. (medscape.com)
  • As a temporary treatment, it does not require tooth wear, reestablishes vertical dimension of occlusion, and allows the patient to adapt to this new dimension until the definitive rehabilitation treatment can be planned and finished. (bvsalud.org)
  • Ethical approval was obtained occlusions along the afferent or efferent visual from the Ethical Research Committee of FTHL. (who.int)
  • Obstructive sleep apnoea (OSA) is caused by airway occlusion during sleep, secondary to pharyngeal collapse. (bmj.com)
  • Some authors refer to ischemic transient vision loss as amaurosis fugax syndrome, so transient vision loss can be a symptom of a serious vision or life-threatening condition, requiring urgent investigation and treatment, or it may have a more benign origin (eg, migraine, dry eye). (medscape.com)
  • Delayed stroke or transient ischemic attack was reported in 3% of subjects. (ajnr.org)
  • [ 16 ] Over a similar period, another study showed a 20% incidence of stroke in patients with retinal artery occlusion. (medscape.com)
  • Most thrombi in atrial fibrillation form in the left atrial appendage (LAA), its occlusion may therefore reduce the incidence of stroke in these patients. (nih.gov)
  • Our preclinical research uses animal experimental models exhibiting ischemic or haemorrhagic stroke associated co-morbidities or genetically modified strains (and controls) and a transient model of occlusion with recanalisation. (gla.ac.uk)
  • Fluorescein angiography in patients with Giant Cell Arteritis (GCA) may detect total retinal occlusion of retinal circulation. (medscape.com)
  • This may help explain why patients may give a history of transient loss of vision prior to an episode of BRAO. (medscape.com)
  • Successful occlusion of the LAA was achieved in 126/ 140 (90%, 95% CI 83.5% to 94.2%) of patients as noted by TEE at the two months follow-up. (nih.gov)
  • One therapy that shows promise for addressing the condition in adult patients is transient dark exposure, in which a patient has an occlusion that caused their amblyopia removed and lives in darkness for a few days. (cmu.edu)
  • The exact mechanism that produces transient global amnesia is unclear. (medscape.com)
  • citation needed] In laying hens, there can be transient respiratory signs, but mortality may be negligible. (wikipedia.org)
  • [ 1 ] Transient vision loss may be unilateral or bilateral and may last from seconds to hours. (medscape.com)
  • Arteritic anterior ischemic optic neuropathy (AAION) also may present with transient vision loss, but in general, transient vision loss does not occur prior to nonarteritic AAION. (medscape.com)
  • The researchers use two-photon calcium imaging to record neural activity in adult mice before and after transient dark exposure. (cmu.edu)
  • Transient global amnesia (TGA) is a well-described syndrome, but one whose exact etiology is not yet completely understood. (medscape.com)
  • Transient vision loss is a symptom rather than a diagnosis. (medscape.com)
  • The European PLAATO (Percutaneous Left Atrial Appendage Transcatheter Occlusion) study was performed to determine the safety and efficacy of left atrial appendage occlusion by catheter technique. (nih.gov)
  • Introduction : La prise en charge de l'hémorragie digestive liée à l'hypertension portale est bien codifiée mais pose un problème de plateau technique dans nos conditions. (bvsalud.org)
  • The study by researchers in Carnegie Mellon's Mellon College of Science (opens in new window) and the College of Engineering (opens in new window) found evidence that a week after transient dark exposure, the brain's neural networks adjust the way they process visual information thereby improving vision. (cmu.edu)
  • In adults, transient vision loss (TVL) is a frequently encountered complaint that, in most cases, has an identifiable cause. (medscape.com)
  • Transient vision loss in children is less common than in adults and is more likely to have a benign origin. (medscape.com)
  • Children with transient vision loss are less likely to have an ischemic cause for their symptoms and are more likely to have a benign disorder. (medscape.com)
  • Gaze-evoked amaurosis (compression) is transient vision loss occurring when looking in a particular direction. (medscape.com)
  • Transient dark exposure is a treatment that people are exploring in humans,' Jeon said. (cmu.edu)
  • The reestablishment of the vertical dimension of occlusion is an important phase during prosthodontics treatment. (bvsalud.org)
  • Regional myocardial blood flow was measured during control conditions with radioisotope-labeled microspheres, and the phasic reactive hyperemic response to a 20-s transient occlusion was then recorded. (jci.org)
  • During the dipyridamole infusion, the increases in phasic blood flow, the distributions of regional myocardial blood flow, and the relationships between thallium-201 localization and regional blood flow were comparable to values previously observed in exercising dogs with similar occlusions. (jci.org)
  • Each episode of collapse is usually terminated by a transient arousal from sleep which appears necessary to restore pharyngeal muscle tone and thus re-open the airway. (bmj.com)
  • In many cases this activation is transient, but the mechanisms stopping sustained stimulation remain unexplored 7 . (nature.com)