Adam Fontaine

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Between January 1980 and December 1992, 75 prophylactic carotid endarterectomies (CE) were performed on 72 asymptomatic patients presenting high-grade stenosis of the internal carotid artery (ICA). In all patients preoperative assessment consisted of continuous Doppler or duplex scanning. There were 33 women and 39 men with a mean age of 66 +/- 7 years.(More)
OBJECTIVE The purpose of this study was to assess the value of the ratio between the internal carotid systolic velocity (ICSV) at the carotid bulb and the distal internal carotid systolic velocity (DICSV) for the detection of carotid artery stenosis. SUBJECTS AND METHODS Two hundred eleven patients were enrolled in a prospective study comparing several(More)
In the last 10 years, 605 celiomesenteric arteriographic examinations were done at Hôtel-Dieu de Montréal, including 236 for suspected pancreatic disease. Sixty patients with histologic proof of malignant neoplasm had a positive arteriographic examination while 136 had benign disease of the pancreas and 40 others had extra-pancreatic disease. In this(More)
OBJECTIVE To validate the use of Doppler ultrasonography and duplex scanning as the only means of preoperative assessment in carotid disease. DESIGN A retrospective study performed between January 1980 and December 1989. PATIENTS Of 597 carotid endarterectomies carried out by one author, 130 procedures were performed on 118 patients (47 women, 71 men,(More)
The lateral projection area (LPA) hypothesis was investigated by presenting female guppies, Poecilia reticulata with a series of paired males in three experiments. One trait was held constant in each experiment (dorsal fin size in expt I, body size in expt II, and total LPA in expt III) while body: dorsal fin ratio varied. Females spent more time near(More)
A total of 136 patients with a compression syndrome of the upper limb were examined systematically by selective dynamic angiography as developed by the Hôtel-Dieu Hospital in Montreal. The method consists of given multiple injections of a contrast medium with the patient's arm in thirteen different positions. This retrospective study demonstrated that this(More)
An unusual manifestation of a large bowel ischemia was observed in two patients. Both had a left flank tubular fluid collection demonstrated respectively by computed tomography (CT) and ultrasonography (US). At surgery, pyocolon (i.e. ischemic, dilated large bowel segments filled with pus) was discovered and resected. Pyocolon should be suspected in(More)
For the last two decades the most common method of radiographic study of the venous system of the lower limbs has been ascending phlebography, by injection of contrast material in a superficial vein on the dorsum of the foot. We report our own experience with another approach, using a large field technique on recumbent patients, with elevation of the limbs,(More)