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

5 patients developed pulmonary oedema after retrograde femoral arteriography under general anesthesia. Because of the haemodynamic changes associated with radiographic contrast media, a good preoperative cardiological assessment is essential. The volume and nature of the contrast media injected and any other fluid administered should be carefully monitored. There is no apparent safe maximum dose of radiographic contrast media, but this work suggests that for 'Conray 420' (sodium iothalamate 70% w/v) a total dose should be less than 200 ml in a fit patient. The dose should be substantially smaller in patients with a history of evidence of myocardial infarction, myocardial insufficiency, myocardial ischaemia, or hypertension.
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PMID:Pulmonary oedema after radiological investigation of peripheral occlusive vascular disease. Adverse reaction to contrast media. 7 42

Disorders of the free passage of the C.S.F. through the Sylvian aqueduct are among the common causes of intracranial hypertension. After the partial or complete obstruction of the aqueduct, the intracranial hypertension may be produced by three different mechanisms - a) by hypertensive hydrocephalus of the third and lateral ventricles, b) by the combination of hydrocephalus and the space-occupying lesion or c) by the acute obstruction of the aqueduct with acute dilatation of the third and lateral ventricles. The supratentorial hypertension may be, in some cases, transferred to the posterior fossa via the incisura tentorii. For many years, neurosurgeons have been trying to restore the free passage of C.S.F by different surgical techniques which could make possible free outflow of supratentorial hypertension. The number of procedures suggested has proved the importance of the obstruction of the Sylvian aqueduct and difficulties in its treatment (5, 6, 14, 15, 16, 17, 18, 19). Since 1972, the selective ventriculography of the third and fourth ventricles with Conray 60 (1, 2, 3, 4, 7, 8, 9, 10, 11, 12, 13, 20, 21) was performed by the author in 1005 patients and pathological findings were proved in 602. Our of 602 patients with pathological findings, the aqueductal stenosis was proved in 39 and complete obstruction of aqueduct in 168 patients, i.e. in 28 per cent of all pathological findings. The new techniques of interventriculostomy (third to fourth ventricle shunt) using Seldinger's technique is described, presented and documented by x-ray pictures. This technique has been used on 5 patients successfully treated upto now.
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PMID:Recanalization of Sylvian aqueduct. 697 52

The hyperosmolality of current ionic angiographic media gives rise to several adverse effects. Use of the first low-osmolality medium, metrizamide (Amipaque), has been inhibited by expense and by the necessity for prior mixing into solution. Hexabrix is the first of such media to be available in stable solution, and its use in angiocardiography is reported, in direct comparison with Urografin, Triosil, Cardio-Conray, and metrizamide. The low osmolality media cause significantly less discomfort than ionic media, and are better tolerated in paediatric angiocardiography. In coronary angiography Hexabrix causes comparable T wave change to Urografin and more than Triosil or metrizamide, but tends to have less effect on heart rate. The risk of exacerbating pulmonary arterial hypertension in right heart angiography appears to be reduced.
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PMID:Hexabrix--a new contrast medium in angiocardiography. 702 Jul 27