Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0344232 (blurred vision)
 2,072 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A 66-year-old Taiwanese aboriginal male had complained of right-side blurred vision for 2 months, especially when reading. He had a 10-year history of hypertension and cardiovascular disease. His best-corrected visual acuity was 20/25 in each eye. Ophthalmoscopy revealed asymmetrical cupping, but a normal disc. Humphrey perimetry showed an upper homonymous paracentral quadrantanopic defect. Brain magnetic resonance imaging showed an infarction in the left lower calcarine area over the extrastriate (V2/V3) cortical area and a narrowing of the left middle and posterior cerebral arteries due to severe arteriosclerosis.
 ...
PMID:Homonymous central quadrantanopia caused by an extrastriate (v2/v3) infarction: a case report. 1892 58

Reversible posterior leukoencephalopathy syndrome (RPLS) is an acute form of cerebrovascular injury that has been described recently in the setting of uncontrolled hypertension, puerperal eclampsia, or treatment with certain immunosuppressive drugs, including cyclosporine. It is reversible if treated promptly. Two patients with systemic lupus erythematosus (SLE), renal failure, and uncontrolled hypertension developed acute cerebrovascular symptoms; one had seizures and the other had headache and blurred vision. Both patients showed abnormal predominantly posterior lobe findings on neuroimaging films. The patients' symptoms and imaging abnormalities resolved completely with prompt correction of their hypertension and concomitant treatment with corticosteroids. RPLS should be recognized in SLE patients with uncontrolled hypertension and renal failure who present with headaches, seizures, cortical blindness, and other visual abnormalities. Prompt treatment with control of hypertension and withdrawal of precipitating drugs may be most important and can prevent permanent neurologic damage.
 ...
PMID:Reversible posterior leukoencephalopathy syndrome in systemic lupus erythematosus. 1907 72

A 14-year-old girl had a 3-month history of headache and blurred vision. Funduscopy showed bilateral optic disc edema. Findings on brain imaging were normal, and a diagnosis of idiopathic intracranial hypertension was confirmed after lumbar puncture showed an elevated opening pressure of 32 cm H(2)O. Optic nerve head drusen were noted on computed tomography scan and confirmed with B-scan ultrasound. After 2 years, resolution of symptoms coincided with variable compliance to treatment with acetazolamide and concomitant papilledema. In general, optic disc edema poses a clinical conundrum due to the more common occurrence of optic nerve head drusen, potentially resulting in delayed diagnosis and treatment of idiopathic intracranial hypertension.
 ...
PMID:Optic nerve head drusen and idiopathic intracranial hypertension in a 14-year-old girl. 1964 6

Neurological findings in preeclampsia fulfill diagnostic criteria of posterior reversible encephalopathy syndrome (PRES), which is related to cerebral autoregulation impairment associated with high blood pressure. In preeclampsia, PRES may occur without a significant increase in blood pressure. Our aim was to investigate the association between ophthalmic artery resistive index (OARI) and clinical evidence of PRES, defined as the presence of headache and blurred vision, in patients with severe preeclampsia. OARI and main clinical and laboratory parameters were obtained in 112 patients with severe preeclampsia. Differences in these parameters were analyzed in the function of clinical evidence of PRES with a 2-sample t test. The area under receiver operating characteristic curve for each of these parameters in the function of clinical evidence of PRES was obtained. Logistic regression models were established with parameters categorized by cutoff points obtained in receiver operating characteristic curves. Among 112 patients with severe preeclampsia, 46 (41%) presented clinical evidence of PRES. These patients presented lower OARI (P<0.0001), higher mean blood pressure at admission (P<0.0001), higher mean blood pressure elevation after the first trimester (P<0.0001), and higher lactate dehydrogenase (P<0.0001) than those without clinical evidence of PRES. OARI presented an area under receiver operating characteristic curve of 0.810+/-0.039 (95% CI: 0.742 to 0.895; P<0.0001). OARI <0.56 was associated with clinical evidence of PRES, with an odds ratio of 12.67 (95% CI: 4.08 to 39.39; P<0.0001). Data suggest that OARI is a relevant biomarker of PRES in severe preeclampsia.
Hypertension 2010 Jan
PMID:Ophthalmic artery-resistive index and evidence of overperfusion-related encephalopathy in severe preeclampsia. 1994 84

A middle aged primigravida was managed at the University of Nigeria Teaching Hospital, Enugu, Nigeria for a pituitary macroadenoma. She was admitted at 33 weeks gestational age following a history of blurred vision and generalized headache, worse on bending down. After neurological consultation and investigations, a diagnosis of pituitary macroadenoma with mass effect was entertained. A plan for neurosurgery after delivery was made and the patient put on bromocriptine to reduce tumour size. Premature labour at 35 weeks resulted in caesarean delivery of a live baby. She was managed in the intensive care unit for three days where oral bromocriptine was resumed before she was transferred to the postnatal ward. Within ten hours of the transfer, she developed accelerated hypertension with encephalopathy and had a cardiac arrest shortly afterwards. This rare case highlights both the possible role of bromocriptine as a cause of postpartum hypertension and the possible development of a sudden catastrophic intramoural infarction or hemorrhage (pituitary apoplexy) in a patient with a macroadenoma.
 ...
PMID:Management of pituitary adenoma with mass effect in pregnancy: a case report. 2006 94

We report a case of a 76-year-old woman admitted to our institution with sudden onset of dizziness and vertigo followed by vomiting and blurred vision. Her medical history was remarkable for hypertension, diabetes, and ischemic stroke in the territory of the left cerebral median artery. Her symptoms were suggestive of a cerebellar stroke. Computed tomography brain scan and neck vessel ultrasounds produced normal findings. A 24-hour blood pressure monitoring showed a reverse dipping pattern. Magnetic resonance imaging examination was performed, showing a hyperintense ischemic focus involving pons and left middle cerebellar peduncle, on T2-weighted images. On Time-of-flight (TOF)-3-dimensional magnetic resonance angiography, there was a marked reduction of basilar artery signal. The digital subtraction angiography showed a vertebrobasilar system anomaly. The right vertebral artery was hypoplastic with few thin terminal spinal branches. The left vertebral artery was vicarious to the right one in intracranial tract. V3 to V4 tract showed multiple atherosclerotic wall irregularities. The basilar common trunk was absent. An abnormal posterior inferior cerebellar artery replaced the anterior inferior cerebellar artery and superior cerebellar artery. Right posterior inferior cerebellar artery, anterior inferior cerebellar artery, and superior cerebellar artery arose from ipsilateral V4 tract. This case is the first description of pure basilar agenesia. The symptoms might be related to temporary decrement of the flow in the left vertebral artery. Furthermore, the reverse dipping pattern together with the aging, hypertension, and diabetes had probably contributed to a hemodynamic malfunction of the cerebral vascular system.
 ...
PMID:Cerebellar stroke in elderly patient with basilar artery agenesia: a case report. 2012 33

A middle aged primigravida was managed at the University of Nigeria Teaching Hospital, Enugu, Nigeria for a pituitary macroadenoma. She was admitted at 33 weeks gestational age following a history of blurred vision and generalized headache, worse on bending down. After neurological consultation and investigations, a diagnosis of pituitary macroadenoma with mass effect was entertained. A plan for neurosurgery after delivery was made and the patient put on bromocriptine to reduce tumour size. Premature labour at 35 weeks resulted in caesarean delivery of a live baby. She was managed in the intensive care unit for three days where oral bromocriptine was resumed before she was transfered to the postnatal ward. Within ten hours of the transfer, she developed accelerated hypertension with encephalopathy and had a cardiac arrest shortly afterwards. This rare case highlights both the possible role of bromocriptine as a cause of postpartum hypertension and the possible development of a sudden catastrophic intramoural infarction or hemorrhage (pituitary apoplexy) in a patient with a macroadenoma.
 ...
PMID:Management of pituitary adenoma with mass effect in pregnancy: a case report. 2018 Nov 48

Toxic leukoencephalopathy has been more thoroughly investigated during the last decade because of the advance of magnetic resonance imaging (MRI) techniques. We analyzed fludarabine (Flu)-associated hematopoietic cell transplantation (HCT), resulting in severe leukoencephalopathy (n = 39/1596, 2.4%), and describe 3 clinical syndromes with unique clinical and radiographic characteristics. Posterior reversible encephalopathy syndrome (PRES) presents predominantly with seizures, persistent headache, and vision changes, along with variable mental status alterations. PRES is likely to be reversible, particularly after withholding cyclosporine (CsA). Acute toxic leukoencephalopathy (ATL) presents with cognitive dysfunction, decreased levels of consciousness, and vision changes. Other leukoencephalopathy (OLE) includes patients who behave similar to the ATL group, but with less prominent deep white matter changes on MRI. ATL and OLE are less likely to be reversible. The neurologic syndromes correlate with different MRI patterns. In PRES, subcortical and cortical involvement on MRI is associated with seizure, blurred vision, and dysarthria versus ATL and OLE, which involve deep white matter and cause mainly cognitive dysfunction. The different syndromes also carry different prognoses. All patients with Flu-associated encephalopathy had a median overall survival of only 169 days. Those with ATL had shorter overall survival (median 66 days) than patients with PRES (median 208 days). Potential risk factors for Flu-associated encephalopathy were older age, poor renal function, Flu dose, previously treated central nervous system (CNS) disease, or previous Flu-based transplant conditioning. Additional risk factors for PRES CNS toxicity are CsA use and acute hypertension. Flu pharmacokinetic studies may be useful to reduce life-threatening Flu-associated risks of neurotoxicity.
 ...
PMID:Toxic leukoencephalopathy following fludarabine-associated hematopoietic cell transplantation. 2039 78

Neurologic complications of post-partum are serious and usually secondary to eclampsia or stroke. We here report a 26-year-old female who presented with severe headaches, blurred vision, and repeated generalized seizures secondary to posterior reversible encephalopathy that occurred after a caesarean section for fetal death in utero. Outcome was favourable. Although uncommon, this neurologic complication of the post-partum should be discussed in the presence of any sign of encephalopathy occurring in the context of acute hypertension.
 ...
PMID:[Unusual leukoencephalopathy of post-partum]. 2088 89

Intracranial pressure (ICP) is the pressure within the intracranial space. Intracranial hypotension is a clinical syndrome in which low cerebrospinal fluid volume (CSF) results in orthostatic headache. Severe cases can result in nausea, vomiting, photophobia, and, rarely, decreased level of consciousness and coma. CSF opening pressure can be within the normal range in spontaneous intracranial hypotension. Imaging tests therefore play a key and decisive role in the diagnosis, as well as treatment, of intracranial hypotension. Intracranial hypertension occurs in a chronic form known as idiopathic intracranial hypertension, as well as in a large variety of neurologic and systemic disorders. Symptoms include headache, nausea and vomiting, blurred vision, and in severe cases, altered level of consciousness that can progress to coma and death. Direct measurements of CSF pressure through lumbar puncture (in idiopathic intracranial hypotension) or invasive ICP monitoring (in acute intracranial hypertension) are the key diagnostic tests. Imaging is used primarily to determine treatable causes of increased ICP, to assess for impending brain herniation, and to evaluate ventricular size.
 ...
PMID:Intracranial hypotension and intracranial hypertension. 2097 78


<< Previous 1 2 3 4 5 6 7 8 9 10 Next >>