Heat illness symptom index (HISI): a novel instrument for the assessment of heat illness in athletes.

BACKGROUND: Heatstroke is the third leading cause of death in athletics, and an important cause of morbidity and mortality in exercising athletes. There is no current method, however, for identifying milder forms of heat illness. In this pilot study, we sought to develop and provide initial validation for a Heat Illness Symptom Index scale (HISI) that would facilitate research in the assessment of milder forms of heat illness in athletes. METHODS: The study was designed as a multimodal prospective observational study of Division I football players during twice daily practices in southern Florida. We developed a 13-item scale that assessed symptoms that are suspected to occur during milder forms of heat illness. The resultant scale was assessed for reliability using Cronbach's alpha, and was assessed for construct validity by correlating scale scores with factors that are known to be related to heat illness. HISI scores, as well as data on perceived exertion, player position, and pre and post practice weights were collected from 95 athletes participating in late summer football practices. A total of 557 athlete sessions were analyzed. RESULTS: The mean score on the heat illness symptom scale was 12.1 (SD 13.8) and the median value was 8.0. Cronbach's alpha confirmed suitable internal consistency of the scale when assessed separately for each of the five morning practices (alpha = 0.91, 0.88, 0.82, 0.92, 0.85). There were statistically significant correlations of the scale score with weight loss during practice (P = 0.006), rating of perceived exertion (P = 0.005), player position (P < 0.0001), and ambient heat index (P = 0.02) as hypothesized. CONCLUSIONS: This pilot study provides initial validation for a novel symptom-based tool for use in assessing mild forms of heat illness in an athletic population. Further validation studies of the instrument, and correlating symptom scores with measures of core temperature, are needed and planned.

Automated external defibrillators in National Collegiate Athletic Association Division I Athletics.

BACKGROUND: Sudden cardiac death is the leading cause of death in athletes. Evidence on current sudden cardiac death prevention through preparticipation history, physicals, and noninvasive cardiovascular diagnostics has demonstrated a low sensitivity for detection of athletes at high risk of sudden cardiac death. Data are lacking on automated external defibrillator programs specifically initiated to respond to rare dysrhythmia in younger, relatively low-risk populations. METHODS: Surveys were mailed to the head athletic trainers of all National Collegiate Athletic Association Division I athletics programs listed in the National Athletic Trainers' Association directory. In all, 303 surveys were mailed; 186 departments (61%) responded. RESULTS: Seventy-two percent (133) of responding National Collegiate Athletic Association Division I athletics programs have access to automated external defibrillator units; 54% (101) own their units. Proven medical benefit (55%), concern for liability (51%), and affordability (29%) ranked highest in frequency of reasons for automated external defibrillator purchase. Unit cost (odds ratio = 1.01; 95% confidence interval, 1.01-1.0), donated units (odds ratio = 1.92; confidence interval, 3.66-1.01), institution size (odds ratio =.0001; confidence interval, 1.3 E-4 to 2.2E-05), and proven medical benefit of automated external defibrillators (odds ratio = 24; confidence interval, 72-8.1) were the most significant predictors of departmental defibrillator ownership. Emergency medical service response time and sudden cardiac death event history were not significantly predictive of departmental defibrillator ownership. The majority of automated external defibrillator interventions occurred on nonathletes. CONCLUSIONS: Many athletics medicine programs are obtaining automated external defibrillators without apparent criteria for determination of need. Usage and maintenance policies vary widely among departments with unit ownership or access. Programs need to approach the issue of unit acquisition and implementation with knowledge of the surrounding emergency medical service system, geography of their individual sports medicine facilities, numbers and relative risk of their athletes, and budgetary constraints.

Compliance with recommendations for lipid management among patients with type 2 diabetes in an academic family practice.

BACKGROUND: Lipid abnormalities are twice as common in patients with type 2 diabetes, and this contributes substantially to their increased risk of cardiac disease. The American Diabetic Association (ADA) has defined treatment goals for high-density lipoprotein (HDL) cholesterol (>45 mg/dL), triglyceride (<200 mg/dL), and low-density lipoprotein (LDL) cholesterol (<100 mg/dL). It is unknown, however, how frequently patients with diabetes managed in primary care settings are able to attain these treatment goals. METHODS: We randomly selected 239 patients with type 2 diabetes and conducted a chart review to determine whether patients had attained ADA lipid goals. We examined clinical predictors of goal attainment using logistic regression. RESULTS: The number and percentage of patients who had attained ADA lipid goals was as follows: HDL cholesterol, 87 of 207 (42.0%); LDL cholesterol, 93 of 208 (47.0%); and triglyceride, 142 of 206 (70.0%). Only 30 of 206 (14.6%) patients had achieved all 3 lipid goals. Three groups of patients with diabetes had greater odds of achieving the LDL treatment goal: men, patients taking a lipid-lowering drug, and patients with hypertension. Patients with diabetes had greater odds of achieving the HDL goal if they were female, were black, or if they had lower values for body mass index and triglyceride. The odds of achieving the triglyceride goal were greater for men, for patients having Medicare insurance supplemented by private insurance, and for those with increasing values of HDL. CONCLUSION: We found that the majority of patients with diabetes failed to attain lipid goals set forth by the American Diabetes Association. Further study is needed in larger populations to confirm these findings, and if confirmed, to determine the reasons that patients fail to achieve lipid goals.

Prevalence of patients with type 2 diabetes mellitus reaching the American Diabetes Association's target guidelines in a university primary care setting.

BACKGROUND: The success with which primary care physicians are able to meet American Diabetes Association (ADA) clinical goals is unknown. METHODS: Charts of 218 randomly sampled type 2 diabetic patients were abstracted to assess the attainment of six ADA treatment goals and receipt of four ADA-recommended health services. RESULTS: The mean number of ADA goals attained was 4.9 (SD, 1.6). Only one patient had attained all 10 goals. Most patients had attained ADA goals for triglycerides, diastolic blood pressure, hemoglobin A1c, low-density lipoprotein cholesterol, and diabetic education. Most patients had not received an annual eye examination or urine microalbuminuria screening, most were not taking daily aspirin, and most had not attained treatment goals for high-density lipoprotein or systolic blood pressure. CONCLUSION: ADA treatment goals may be quite difficult to attain in the primary care setting. Further studies are needed to understand the barriers to diabetes control.

Heat illness in athletes: the dangerous combination of heat, humidity and exercise.

In 1980, 1700 people died during a prolonged heat wave in a region under-prepared for heat illness prevention. Dramatically underreported, heat-related pathology contributes to significant morbidity as well as occasional mortality in athletic, elderly, paediatric and disabled populations. Among US high school athletes, heat illness is the third leading cause of death. Significant risk factors for heat illness include dehydration, hot and humid climate, obesity, low physical fitness, lack of acclimatisation, previous history of heat stroke, sleep deprivation, medications (especially diuretics or antidepressants), sweat gland dysfunction, and upper respiratory or gastrointestinal illness. Many of these risk factors can be addressed with education and awareness of patients at risk. Dehydration, with fluid loss occasionally as high as 6-10% of bodyweight, appears to be one of the most common risk factors for heat illness in patients exercising in the heat. Core body temperature has been shown to rise an additional 0.15-0.2 degrees C for every 1% of bodyweight lost to dehydration during exercise. Identifying athletes at risk, limiting environmental exposure, and monitoring closely for signs and symptoms are all important components of preventing heat illness. However, monitoring hydration status and early intervention may be the most important factors in preventing severe heat illness.

Cervical cancer rates and the supply of primary care physicians in Florida.

BACKGROUND AND OBJECTIVES: This study's aim was to determine if an increased supply of primary care physicians is associated with lower incidence and mortality rates for cervical cancer. METHODS: We determined cervical cancer incidence and mortality rates for each of Florida's 67 counties over the 3-year period of 1993-1995 using data from Florida's population-based tumor registry. Data on physician supply were obtained from the 1994 American Medical Association Physician Masterfile. We used multiple linear regression analysis to examine the relationship between physician supply and cervical cancer incidence and mortality rates, adjusting for other county-level characteristics. RESULTS: In regression analysis that adjusted for other county-level characteristics, each increase in the supply of family physicians of one physician/10,000 persons was associated with a corresponding drop in the incidence rate of 1.5 cases/100,000 persons and a corresponding drop in mortality rate of .65 cases/100,000 persons. CONCLUSIONS: Our results indicate that a greater supply of primary care physicians is likely associated with a lower incidence of cervical cancer and a lower cervical cancer mortality rate. More studies are needed at the individual patient level to confirm this association.