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Biomedical subjects

F Rouah

Publications and source records attributed to F Rouah.

4 recordsLinked to original sources
PubMed2003

Snowblading injuries in Eastern Canada.

OBJECTIVES: To evaluate injury patterns of snowbladers and compare them with those of skiers and snowboarders. To determine possible effects of helmet use in these sports on injury to the head and neck. METHODS: This prospective case series observational study was conducted by collecting the injury reports from the ski patrol during the 1999-2000 season at Mont Tremblant ski resort, Quebec. All participants in downhill winter sports who presented themselves to the ski patrol with traumatic injury related to their sport were included. A concussion was defined as any loss of consciousness, amnesia, confusion, disorientation, vertigo, or headache that resulted from injury. The ski patroller reported helmet use on the accident report at the time of injury. RESULTS: Snowbladers present with a unique pattern of injury compared with skiers and snowboarders. The incidence of leg, knee, and ankle/foot injuries were 20.5%, 25.6%, and 10.3% respectively. Concussions represented 11% of all injuries. There was no increase in other injury, including neck injury, related to helmet use. CONCLUSIONS: Unique injury patterns in snowbladers warrant reconsideration of equipment design. Concussion is a common injury on the ski slope. Although the effects of helmet use on concussion rate are inconclusive based on this study, helmet use did not increase the rate of neck injury, even when adjusted for age.

Adolescent↗
PubMed2001

A recommended method for obtaining the age at onset of dementia from the CSHA database.

In studies of dementia, the age at onset (AAO) of the disease is often described without indicating how it was obtained. We used the "CAMDEX algorithm," an ad hoc procedure, to compute the AAO of dementia from the CSHA database. An AAO could be calculated for 983 of 1,132 subjects with dementia. A similar procedure (the "clinical algorithm") was used to calculate a second AAO, which was compared to that obtained by the first algorithm. The CAMDEX and clinical algorithms produced mean AAOs of dementia of 80.5 years (SD = 9.2 years, n = 983) and 79.6 years (SD = 9.7 years, n = 829), respectively. The sample correlation coefficient between the CAMDEX and clinical algorithms was .899 while the intraclass correlation coefficient, ICC(2,1), was .898. This method could prove useful for researchers using the CSHA data who need an AAO for those subjects with dementia.

Age of Onset↗
PubMed2000

Hemostatic markers in patients at risk of cerebral ischemia.

BACKGROUND: Increased levels of markers of hemostasis may assist in the determination of the extent of carotid occlusive disease and the identification of neurologically intact individuals at increased risk of ischemic events. METHODS: We conducted a prospective study of 304 subjects, including 82 with a recent (< or =7 days) transient ischemic attack (TIA), 157 asymptomatic individuals with a cervical bruit, and 65 control subjects. Baseline evaluation included a neurological assessment, ECG, cervical ultrasonography, and cerebral CT and/or MRI. Levels of markers of coagulation and fibrinolytic activity were also determined. Results were analyzed in relation to the degree of carotid disease and the subsequent occurrence of cerebral and cardiac ischemic events. RESULTS: Over a mean follow-up period of 2.8 years (SD, 1.3 years), 114 ischemic events occurred. Survival analyses showed that prothrombin fragment 1.2 (F(1.2)) was a predictor of time to cerebral and cardiac ischemic events in the combined TIA and asymptomatic bruit group (relative risk [RR], 1.46; 95% CI, 1.18 to 1.81) as well as in the asymptomatic bruit group separately (RR, 1.70; 95% CI, 1.14 to 2.53). In the TIA group, both F(1.2) (RR, 2.36; 95% CI, 1.19 to 4.68) and severe (> or =80%) carotid stenosis (RR, 3.53; 95% CI, 1.19 to 10.51) were predictive of time to ischemic stroke, myocardial infarction, or vascular death. CONCLUSIONS: In patients with TIAs and in asymptomatic individuals with cervical bruits, F(1.2) levels were found to be independent predictors of subsequent cerebral and cardiac ischemic events. Our results are consistent with an active role of the coagulation system through upregulation of thrombin in carotid disease progression and in the pathogenesis of ischemic events in patients at risk.

Aged↗