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Query: UMLS:C0020538 (hypertension)
 170,190 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

All cases of intracranial aneurysm, arteriovenous malformation, and subarachnoid hemorrhage of undetermined etiology seen at one hospital over a 13-year period were reviewed to assess relationships between age, sex, systolic and diastolic blood pressure, and number of aneurysms. There were 350 patients, of whom 212 had aneurysms. The major findings were as follows: 1) Hypertension was not significantly more prevalent in the aneurysm population than in the age-matched general population, except for females aged 18 to 54 years (systolic pressure elevation of 10 to 15 mm Hg). 2) Under 55 years of age, both male and female hypertensive patients were twice as likely to have multiple aneurysms as normotensive patients. 3) Females were more likely than males to have multiple aneurysms. 4) For females but not males, increasing age, higher systolic pressure, and higher diastolic pressure all correlated with an increasing number of aneurysms. Hypertension appears to be more prevalent in certain subgroups of the total aneurysm population, although the individual relationships between hypertension, atherosclerosis, and aneurysms cannot be determined from either the present or previous studies. The possible role of familial factors, as well as implications for both diagnosis and further research, are briefly noted.
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PMID:Intracranial aneurysms. Age, sex, blood pressure, and multiplicity in an unselected series of patients. 44 14

A 45-year-old man suddenly developed right hemiparesis and aphasia during work and lost conciousness next day, when he was admitted to us. Lumbar puncture showed bloody C.S.F. with the initial pressure of 220 mm H2O. Physical examination revealed hypertension and arteriosclerosis. Cerebral angiogram revealed an arteriovenous malformation in the left frontoparietal-parasagittal region and a saccular aneurysm at the left internal carotid-posterior communicating artery junction. In addition, the existence of putaminal hematoma was suspected on account of the displacement of the left anterior cerebral artery and the left lenticulostriate arteries. On the fourth day after admission his consciousness returned and the right hemiparesis gradually improved. One month later the disappearance of the displacement of the anterior cerebral artery was demonstrated by cerebral angiogram. A frontoparietal craniotomy was done and no hematoma was found around the arteriovenous malformation and the basis of the aneurysm did not adhere to the temporal lobe. Taking these findings into consideration, it is presumed that the hematoma in putaminal region was due to neither arteriovenous malformation nor aneurysm but was a hypertensive intracerebral hemorrhage.
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PMID:[A case of hypertensive intracerebral hemorrhage associated with cerebral arteriovenous malformation and aneurysm (author's transl)]. 55 34

The development of systemic hypertension, in an eight-year-old girl, after resection of a large arteriovenous malformation, is described. The hypertension was related to an elevated plasma renin activity and was controlled with propranolol. A possible mechanism for the rise in plasma renin activity is postulated.
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PMID:Systemic hypertension after surgical treatment of a congenital arteriovenous malformation. 63 88

A series of 54 adult patients with intraventricular hemorrhage diagnosed by computed tomography (CT scan) is described. Hypertension, arterial aneurysm, and arteriovenous malformation (AVM) accounted for 83% of the cases. Three categories of clinical presentation are defined. CT scan reliably demonstrated the presence and distribution of blood within the ventricular system, including the third and fourth ventricles. The increased density caused by intraventricular blood was seen to disappear in 12 days. An intracerebral hematoma was identified in 78% of cases. Surgical treatment was beneficial in only a small number of cases.
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PMID:Intraventricular hemorrhage in adults. 89 83

The hematomas occupied between the inner surface of skull and brain surface are well known and the majority of these intracranial hematomas are elicited by head injury. On the other hand, the intracerebral hematomas formed in the brain tissue are produced by the various causative diseases and the majority of these cause are cerebrovascular disease. The causative diseases of intracerebral hematomas were cerebrovascular diseases like hypertension, intracranial aneurysm and cerebral arteriovenous malformation in 65.7% and head injury in 32.4%. The cause of two cases were bleeding from asymptomatic brain tumors and formation of intracerebral hematoma produced initial clinical symptom of these cases. Age distribution of intracerebral hematoma has peculiarity in each causative disease. Hypertensive intracerebral hematomas occurred in patients over 30 years old and intracerebral hematoma due to bleeding from cerebral arteriovenous malformation was not observed in patient over 50 years old. The frequency of consciousness change as initial symptom of traumatic intracerebral hematome, hypertensive intracerebral hematome, intracerebral hematoma caused by bleeding from cerebral arteriovenous malformation and bleeding from intracranial aneurysm and spontane intracerebral hematome are 79.4%, 57.1%, 57.1%, 40.0% and 25.0% respectively. Headache as initial symptom are conspicuous in patients of intracerebral hematoma caused by bleeding from intracranial aneurysm and arteriovenous malformation, and each frequency were 86.7% and 71.4%. The frequency of motor disturbance as initial symptom was highest in patients of hypertensive intracerebral hematoma and its frequency was 50.0%. Clinical symptoms observed at admission were as follows: Consciousness change in patients of hypertensive intracerebral hematoma and traumatic intracerebral hematoma were 100% but in patients of cerebral arteriovenous malformation and intracranial aneurysm were 64.3% and 60.0%. Consciousness change in patients of spontane intracerebral hematoma were only 50.0%. Motor disturbance as clinical symptom were 85.0% in hypertensive intracerebral hematoma and this frequency was highest in all causative diseases. The frequency of coincidence between the side of dilated pupil under anisocoria and the side of hematoma was less than 50.0% in average and this frequency was marked lower by compared with the frequency in patients of hematome formed between the skull and brain surface.
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PMID:[On the intracerebral hematoma --clinical analysis of 105 operated cases-- (author's transl)]. 124 Aug 45

The effectiveness of single-dose captopril test (CP-T) and captopril renal scintigraphy with 99mTc-DTPA (CP-RG) in the diagnosis of renovascular hypertension (RVH) was evaluated in 27 patients with (Group I, 16 patients) or without (Group II, 11 patients) renal vascular disease. Group I consisted of RVH in 8 patients (bilateral in 3, unilateral in 5), arteriovenous malformation in 3, renal artery aneurysm in 4, including 2 with essential hypertension, and asymptomatic renal artery stenosis in 1. Group II consisted of 6 hypertensive patients (2 with essential hypertension and 4 with renal hypertension) and 5 normotensive patients. Sensitivity of CP-T and CP-RG in the diagnosis of RVH was 29% (2/7) and 86% (6/7), respectively, indicating the latter was more sensitive than the former. In 3 patients with bilateral RVH, positive response in CP-RG was observed only in the unilateral kidney. Specificity of CP-T and CP-RG was 86% (6/7) and 100% (5/5), respectively in Group I, 100% (8/8) and 83% (5/6), respectively in 16 hypertensive patients. CP-T and CP-RG before and after the treatment of RVH were evaluated in 4 patients. The change of positive response in CP-T and CP-RG into negative after percutaneous transluminal renal angioplasty (PTA) or surgery were found in 3, all followed by a fall in blood pressure, which was not observed in the other patient with positive response after PTA.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:[Single-dose captopril test and captopril renal scintigraphy in the evaluation of renovascular hypertension]. 143 70

A case of a dural arteriovenous malformation with prominent localizing neurological deficits is reported. The venous drainage of the lesion and the lack of a significant pial supply implicate venous hypertension as the mechanism of neurological dysfunction. This mechanism is supported further by the angiographic changes and the prompt resolution of the deficits after endovascular treatment. This case illustrates the potential for this frequently postulated but rarely confirmed pathophysiological mechanism to cause reversible neurological dysfunction.
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PMID:Reversible arteriovenous malformation-induced venous hypertension as a cause of neurological deficits. 162 Mar 9

Medical problems related to cocaine consumption are not rare in our environment; however, to this respect, descriptions in the spanish literature are scarce. We present three cases of intracerebral hemorrhage which occurred after cocaine consumption (intranasal route in two cases and intravenous route in one case). In the three cases, another associated risk factor was observed (alcohol in one case, hypertension in other case, arteriovenous malformation in the third case). We comment on the pathophysiological theories of the cause of bleeding, high-lighting the routine search of this association.
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PMID:[Intraparenchymal cerebral hemorrhage and cocaine]. 162 99

Most spinal dural arteriovenous malformations are located in the thoracic and lumbar regions. The symptoms include pain, weakness, sensory disturbances, and sphincter dysfunction, which are usually gradual in onset. They are attributed to venous hypertension with a resultant ischemia of the cord, and hemorrhage from them is rare. The authors report an unusual case of a patient with a dural arteriovenous malformation in the cervical spine who was admitted with a sudden onset of severe headache and dysesthesia due to subarachnoid hemorrhage.
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PMID:Dural arteriovenous malformation in the cervical spine presenting with subarachnoid hemorrhage: case report. 164 Oct 89

A 32-year-old male with a large arteriovenous malformation (AVM) in the right temporoparietal area presented with features of benign intracranial hypertension. This association is rare. The pathogenesis is believed to be due to cerebral venous hypertension. The excision of the AVM eliminated the intracranial hypertension.
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PMID:Cerebral arteriovenous malformation causing benign intracranial hypertension--case report. 172 82


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