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Biomedical subjects

W Gee

Publications and source records attributed to W Gee.

70 records · Page 4Linked to original sources
PubMed1975

Measurement of collateral cerebral hemispheric blood pressure by ocular pneumoplethysmography.

A new technic of ocular pneumoplethysmorgraphy for the simultaneous determination of blood pressures in the ophthalmic artery branches of the internal carotid arteries is described. It provides a noninvasive, atraumatic method for assessing hemispheric blood flow. When performed with simultaneous carotid compression, it provides a means for assessing the availability of collateral blood flow to the ipsilateral cerebral hemisphere. Clinical applications related to carotid artery disease and carotid artery surgery are discussed.

Blood Pressure Determination↗
PubMed1974

Atypical fibromuscular hyperplasia involving the carotid artery.

A case of atypical fibromuscular hyperplasia involving the carotid artery in a 38-year-old male is described. The lesion, with associated intimal disruption and subintimal hematoma, caused cerebral embolus and transient neurologic dysfunction. Segmental resection and autogenous graft reconstruction of the carotid artery were successful in removing the lesion and preventing subsequent symptoms.

Adult↗
PubMedDate not supplied

Review of a community hospital experience with carotid endarterectomy.

Carotid endarterectomy was performed 743 times during 56 months in a community hospital by 24 surgeons. The mortality rate was 2.7% and permanent stroke occurred in 1.8%. Temporary postoperative neurologic deficit occurred in 3.5%. The frequency with which the surgeon performed the procedure did not appear significant in the incidence of postoperative morbidity and mortality.

Adult↗
PubMedDate not supplied

Noninvasive diagnosis of carotid occlusion by ocular pneumoplethysmography.

An ocular pneumoplethysmograph was devised to measure the systolic pressure in the ophthalmic artery and to obtain calibrated pulse volume changes from the ocular globe, with simultaneous recording from both eyes. The instrument is self-contained and portable. It can be applied by paramedical personnel, and the graphic recording is readily interpreted by the physician. It has proved to be 100% accurate in noninvasively detecting unilateral carotid occlusion or preocclusive stenosis. This technique, when combined with carotid compression, has been shown to be most valuable in assessing the tolerance of a cerebral hemisphere to proximal carotid occlusion. It was used to evaluate a wide variety of carotid arterial lesions. Elective carotid resection without graft replacement and urgent and elective carotid ligations were performed, based on the preoperative prediction that such procedures would be tolerated without neurological injury. The instrument and the technique of its application are simple, safe, and accurate.

Animals↗
PubMedDate not supplied

Ocular pneumoplethysmography.

The development and clinical application of ocular pneumoplethysmography (OPG) has had its principal application in vascular surgery. However, many patients with suspected carotid arterial lesions have concomitant ocular disease. Vascular laboratories routinely consult with ophthalmologists regarding OPG application in such cases. This review has been prepared to familiarize ophthalmologists with all aspects of this procedure.

Animals↗
PubMedDate not supplied

Nonpulsatile exophthalmos in carotid-cavernous sinus fistula.

An unusual case of carotid artery-cavernous sinus fistula with pulseless exophthalmos is presented in a two and one-half year old child. Though exophthalmos and increased episcleral venous distention were present, the ophthalmic artery pressure was not significantly altered as determined by ocular pneumoplethysmography. Consequently there was no evidence of hypoxic sequelae which frequently occur with this arteriovenous shunt. The combined use of arteriography and ocular pneumoplethysmography is advocated for determining and characterizing the presence of significant intracranial arteriovenous disease.

Arteriovenous Fistula↗