A wheelchair workshop for medical students improves knowledge and skills: a randomized controlled trial.

OBJECTIVE: To test the hypothesis that a multicomponent workshop about wheelchairs, tailored for undergraduate medical students, is effective in improving medical students' wheelchair-related knowledge, skills, and attitudes. DESIGN: A randomized controlled trial of 24 first- and second-year medical students randomly allocated into intervention and control groups was undertaken. The intervention group received a 4-hr workshop that included didactic, practical, community, and reflective elements. The educational objectives were validated by a focus group. The main outcome measures were a written knowledge test, a practical examination, the Scale of Attitudes Toward Disabled Persons, and students' perceptions. RESULTS: The baseline characteristics of the groups were comparable. After the workshop, the mean scores on the written knowledge test and practical examination for the intervention group were higher than for the control group by 23.9% (95% confidence interval, 17.6%-30.3%; P < 0.0001) and 34.4% (95% confidence interval, 26.3%-42.5%; P < 0.0001), respectively. The difference (-1.6%) for the Scale of Attitudes Toward Disabled Persons scores was not significant (P = 0.93), but there may have been a ceiling effect (both groups' mean scores were >87%). The perceptions of the students who took the workshop were highly positive. CONCLUSIONS: A wheelchair workshop designed for medical students was practical, well received by students, and effective at improving students' knowledge and skills. Although students' attitudes were not measurably affected by the intervention, there was qualitative evidence of a positive effect.

Development of end stage renal disease following an acute cardiac event.

We determined the rate and risk factors for end-stage renal disease (ESRD) in consecutive patients discharged after a cardiac event in a large, unbiased Canadian cohort that receives universal health coverage. A total of 8236 adults hospitalized over a 2 year period were followed for up to 7.5 years and the incidence of ESRD and mortality determined. Of these, 113 reached ESRD (stage 5). Patients with moderate (stage 3) and severe (stage 4) renal insufficiency were more likely to develop ESRD than those patients at stage 1 or 2. However, patients with moderate renal insufficiency were 78.6 times more likely to die than to develop ESRD. Absolute rates of progression to ESRD per 100-patient years were 0.08 at stages 1 and 2, 0.17 at stage 3 and 4.27 at stage 4. Age, diabetes, hypertension and congestive heart failure also predicted ESRD. We found that patients with stage 4 disease are at high risk of ESRD after a cardiac admission while those at stage 3 are far more likely to die than to develop ESRD.

The effect of rolling resistance on stationary wheelchair wheelies.

OBJECTIVE: To test the hypotheses that increased rolling resistance (RR) reduces rear-wheel displacement and perceived difficulty during the takeoff and balance phases of stationary wheelchair wheelies. DESIGN: We carried out within-subject comparisons of 20 participants as they each performed, in random order, two 30-sec stationary wheelies in three RR settings (tile, 5-cm-thick foam, and 12.5-cm-high blocks in front of and behind the rear wheels). The main outcome measures were rear-wheel displacement (in centimeters for the takeoff phase and centimeters per second for the balance phase) from a spring-loaded potentiometer and Likert scales of perceived difficulty. RESULTS: For rear-wheel displacement, all six of the pairwise comparisons (three terrains x two phases (takeoff and balance)) showed a significant statistical difference (P < 0.002). In each of the six pairwise comparisons, displacement was less for the higher of the two RR conditions. For perceived difficulty, during the balance phase, participants perceived tile to be significantly more difficult than either foam (P = 0.0067) or blocks (P = 0.0002). The other pairwise comparisons were not statistically significant. CONCLUSION: In conditions of increased RR, rear-wheel displacement and perceived difficulty are reduced during stationary wheelchair wheelies. These findings have implications for teaching wheelchair users to perform wheelies, a foundation of many advanced wheelchair skills.

Outcomes of acute coronary syndrome in a large Canadian cohort: impact of chronic renal insufficiency, cardiac interventions, and anemia.

BACKGROUND: Chronic renal insufficiency (CRI) has been identified as an important risk factor for cardiac events. Studies in the United States reported decreased survival and decreased use of surgical and medical interventions after myocardial infarction in patients with CRI. METHODS: We studied the impact of renal function on health outcomes in a Canadian cohort of consecutive patients admitted with acute coronary syndrome (ACS) between October 1997 and October 1999. The study design is an observational cohort of 5,549 adult patients who survived to discharge with a discharge diagnosis of ACS. Renal function is classified into 4 levels: (1) normal, glomerular filtration rate (GFR) greater than 80 mL/min/1.73 m2 (>1.33 mL/s); (2) mild CRI, GFR of 60 to 80 mL/min/1.73 m2 (1.00 to 1.33 mL/s); (3) moderate CRI, GFR of 30 to 59 mL/min/1.73 m2 (0.50 to 0.98 mL/s); and (4) severe CRI, GFR less than 30 mL/min/1.73 m2 (<0.50 mL/s). The primary outcome is death. RESULTS: Advanced and moderate CRI independently predicted death (hazard ratio, 1.06; 95% confidence interval [CI], 1.01 to 1.12; and hazard ratio, 1.23; 95% CI, 1.18 to 1.29). Severe anemia (hemoglobin level < 9.0 g/dL [<90 g/L]) also was an independent risk factor for death (hazard ratio, 1.38; 95% CI, 1.18 to 1.61). Use of beta-blockers (hazard ratio, 0.91; 95% CI, 0.86 to 0.97), acetylsalicylic acid (hazard ratio, 0.90; 95% CI, 0.84 to 0.97), lipid-lowering therapy (hazard ratio, 0.84; 95% CI, 0.78 to 0.89), and medical thrombolysis (hazard ratio, 0.89; 95% CI, 0.81 to 0.97) were associated with reduced risk for death. Medical interventions with beta-blockers, acetylsalicylic acid, lipid-lowering therapy, and thrombolysis and surgical intervention were significantly less likely to be used in patients with CRI. CONCLUSION: Despite universal access to health care, Canadian patients with CRI are more likely to die after a cardiac event and less likely to receive important interventions.

The manual wheelchair-handling skills of caregivers and the effect of training.

OBJECTIVE: To test the hypothesis that the Wheelchair Skills Training Program (WSTP) is effective in improving the wheelchair-handling skills of untrained caregivers. DESIGN: Within-participant comparisons. SETTING: Rehabilitation center and community. PARTICIPANTS: Twenty-four caregivers of manual wheelchair users. INTERVENTIONS: Caregiver participants underwent the WSTP, version 2.4, adapted for caregivers. Training was individualized on the basis of an integrated testing-and-training protocol that took place on a single occasion (total, approximately 50 min). MAIN OUTCOME MEASURES: Total percentage scores on the objective Wheelchair Skills Test (WST), version 2.4, for the pretraining (N=24), posttraining (N=24), and retention (n=9) evaluations. For the skill-transfer evaluation (n=10), we used the questionnaire version (WST-Q), administered by telephone to participants after return to their communities. RESULTS: There were no serious adverse incidents. The mean pretraining total WST score +/- standard deviation was 77.8%+/-12.0%. Posttraining, this increased to 94.7%+/-7.1% (P <.001), a 22% relative increase. At retention testing, a median latency of 7 days later, the mean value, 94.2%+/-7.1%, did not decrease significantly from the posttraining level (P =.38). At skill-transfer testing, a median latency of 179 days posttraining, the mean value, 92.5%+/-8.7%, did not decrease significantly from the posttraining level (P =.73). The greatest improvements were at the advanced skill level. CONCLUSIONS: The WSTP is a safe, practical, and effective method of improving the wheelchair-handling skills of untrained caregivers. Skill improvements are generally well retained and transfer well to the community. Such training could play an important role in the rehabilitation process.