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Biomedical subjects

A Capon

Publications and source records attributed to A Capon.

At least 55 records · Page 3Linked to original sources
PubMed1976

Cerebral blood flow under enflurane anesthesia.

Cerebral blood flow was measured, under controlled conditions of stable ventilation and PaCO2, in 11 patients suffering from cerebro-vascular lesions. Comparing the results under N2O-enflurane 1% anesthesia with those under N2O-fentanyl anesthesia shows an average 8.4% decrease of blood flow. In 5 cases, a third measurement was performed under N2O-enflurane 2% anesthesia. This caused an average 8.5% complementary decrease. Whereas most inhalational anesthetic agents produce an increase of cerebral blood flow, this is not observed with enflurane, the tendency rather being towards a decrease.

Adult↗
PubMed1976

Use of 99mTc-labeled albumin microspheres in cerebral vascular disease.

The intracarotid injection of radioalbumin microspheres (15 and 30 mum) is followed by scanning procedures that permit the description of the cerebral bloodflow distribution. The method is reproducible. Injection can be made into the internal and common carotid arteries, as well as into the aortic arch or the left ventricle. This last procedure makes it easy to examine patients with severe extracranial vascular stenosis or thrombosis and permits comparison of the two hemispheres. Most patients (88%) injected on the affected side showed one or more local vascular deficits. The method therefore is more efficient than pertechnetate scanning or arteriography.

Aged↗
PubMed1975

Multiple tuberculomas of the brain. Report of a case.

A case of multiple tuberculomas of the brain in a pregnant patient is reported. The symptoms and signs suggested a lesion of the cerebellum which was found to be only congested and oedematous at craniotomy. The correct diagnosis was made at autopsy.

Adult↗
PubMed1975

A rapid method for evaluation of regional cerebral blood flow after intra-arterial injection of 133Xe.

A technique based on the stochastic method is described for the computation of regional blood flow (RBF) after intra-arterial infection of 133Xe. Results are presented on scintigrams, defined by 600-800 channels in a 64 times 64 matrix. The content of each channel is equal to the computed RBF value. The standard deviation is also computed for each channel. The total computation cycle is achieved within 10 min. The method has been used to investigate the influence of anesthesia or drugs on regional blood flow. For this purpose, a differential printout program was written in which variations of RBF values between the two measurements are expressed in units of a fixed percentage; provision is made for calculation of RBF variations in units of differential standard deviations. Data are in good accordance with other clinical findings. This method is suitable for clinical use when blood flow values in gray and white substances are not requested.

Adolescent↗