Hair toe tourniquets: a review of two case studies.

Digit hair tourniquets are relatively uncommon. There are reports in the literature of hair tourniquets involving other appendages, such as the penis and uvula, however the phenomenon is not widely recognised and is often overlooked by healthcare professionals. This article discusses two case studies in which hair was responsible for creating a tourniquet around a digit. The article explores possible causes and management options for patients, with reference to the case studies. Midwives and health visitors are central to minimising the risk of injury to children as they can educate expectant mothers about this potential problem.

Traditional and environmentally preferable cleaning product exposure and health symptoms in custodians.

BACKGROUND: We investigated the associations between traditional and environmentally preferable cleaning product exposure and dermal, respiratory, and musculoskeletal symptoms in a population of custodians. METHODS: We analyzed associations between symptoms and exposure to traditional and environmentally preferable cleaning product exposure among 329 custodians. RESULTS: We observed increased odds of dermal (P < 0.01), upper (P = 0.01) and lower respiratory (P = 0.01), and upper extremity (P < 0.01), back (P < 0.01), and lower extremity (P = 0.01) musculoskeletal symptoms associated with increased typical traditional cleaning product exposure. We observed significant trends for increased odds of dermal (P = 0.03) and back (P = 0.04) and lower (P = 0.02) extremity musculoskeletal symptoms associated with increased typical environmentally preferable cleaning product exposure. CONCLUSIONS: Fewer positive associations and reduced odds of health symptoms associated with environmentally preferable cleaning product exposure suggest that these products may represent a safer alternative to traditional cleaning products.

Increased anandamide uptake by sensory neurons contributes to hyperalgesia in a model of cancer pain.

Opioids do not effectively manage pain in many patients with advanced cancer. Because anandamide (AEA) activation of cannabinoid type-1 receptors (CB1R) on nociceptors reduces nociception, manipulation of AEA metabolism in the periphery may be an effective alternative or adjuvant therapy in the management of cancer pain. AEA is hydrolyzed by the intracellular enzyme fatty acid amide hydrolase (FAAH), and this enzyme activity contributes to uptake of AEA into neurons and to reduction of AEA available to activate CB1R. We used an in vitro preparation of adult murine dorsal root ganglion (DRG) neurons co-cultured with fibrosarcoma cells to investigate how tumors alter the uptake of AEA into neurons. Evidence that the uptake of [(3)H]AEA into dissociated DRG cells in the co-culture model mimicked the increase in uptake that occurred in DRG cells from tumor-bearing mice supported the utility of the in vitro model to study AEA uptake. Results with the fluorescent AEA analog CAY10455 confirmed that an increase in uptake in the co-culture model occurred in neurons. One factor that contributed to the increase in [(3)H]AEA uptake was an increase in total cellular cholesterol in the cancer condition. Treatment with the FAAH inhibitor URB597 reduced CAY10455 uptake in the co-culture model to the level observed in DRG neurons maintained in the control condition (i.e., in the absence of fibrosarcoma cells), and this effect was paralleled by OMDM-1, an inhibitor of AEA uptake, at a concentration that had no effect on FAAH activity. Maximally effective concentrations of the two drugs together produced a greater reduction than was observed with each drug alone. Treatment with BMS309403, which competes for AEA binding to fatty acid binding protein-5, mimicked the effect of OMDM-1 in vitro. Local injection of OMDM-1 reduced hyperalgesia in vivo in mice with unilateral tumors in and around the calcaneous bone. Intraplantar injection of OMDM-1 (5µg) into the tumor-bearing paw reduced mechanical hyperalgesia through a CB1R-dependent mechanism and also reduced a spontaneous nocifensive behavior. The same dose reduced withdrawal responses evoked by suprathreshold mechanical stimuli in naive mice. These data support the conclusion that OMDM-1 inhibits AEA uptake by a mechanism that is independent of inhibition of FAAH and provide a rationale for the development of peripherally restricted drugs that decrease AEA uptake for the management of cancer pain.

Characteristics of effective health and safety committees: survey results.

BACKGROUND: Although perhaps the most common worker-management structure, there has been surprisingly little research on describing and evaluating the characteristics of health and safety committees. METHODS: A survey of 380 health and safety committee members from 176 manufacturing workplaces was supplemented with administrative data and compared with reported workers' compensation rates. Survey respondents also reported perceptions of overall safety, committee, effectiveness, committee activities, and "best practices." RESULTS: Extensive descriptive data is presented, including a mean of 8.7 members per committee spending 1,167 hr per year on committee business for an estimate of $40,500 worth of time per committee. Higher speed to correct action items, a focus on ergonomics, and planning for safety training was associated with lower injury rates. The discrepancy between managers and hourly committee members in estimating overall safety was strongly positively associated with injury rates. CONCLUSIONS: Communications and worker involvement may be important to address discrepancy issues. Prospective studies are needed to distinguish directionality of associations.

Estimated use of industrial chemicals in Connecticut.

BACKGROUND: Chemical exposures in the workplace are poorly documented and researched, yet appear to be widespread and with significant potential for impacting worker health. There are few reporting requirements for chemical usage on a national level. METHODS: Chemical usage reports and employment data from Massachusetts were categorized by manufacturing subsector. Connecticut employment was compared to Massachusetts data, with the employment fraction used to estimate chemical usage in Connecticut. RESULTS: The chemical manufacturing sector was estimated to use 620 million pounds of chemicals annually in Connecticut, and all other manufacturing sectors combined used an estimated 50 million pounds, with approximately half listed as carcinogens or reproductive hazards. Potential health effects are presented. CONCLUSION: Widespread chemicaluse underscores the need for the development and use of safer alternatives, as well as additional documentation of potential health effects. Physicians should be aware of potential chemical exposures for patients and provide preventive advice.

A conceptual framework for integrating workplace health promotion and occupational ergonomics programs.

Musculoskeletal, cardiovascular, and mental health are all associated with the physical and psychosocial conditions of work, as well as with individual health behaviors. An integrated approach to workplace health-promotion programs should include attention to the work environment, especially in light of recent findings that work organization influences so-called lifestyle or health behaviors. Macroergonomics provides a framework to improve both physical and organizational features of work and, in the process, to empower individual workers. The Center for the Promotion of Health in the New England Workplace (CPH-NEW) is a research-to-practice effort examining the effectiveness of worksite programs that combine occupational safety and health--especially ergonomics--with health promotion, emphasizing the contribution of work organization to both. Two intervention studies are underway in three different sectors: health care, corrections, and manufacturing. Each study features participatory structures to facilitate employee input into health goal-setting, program design and development, and evaluation, with the goal of enhanced effectiveness and longer-term sustainability.

Are employment shifts into non-manufacturing industries partially responsible for the decline in occupational injury rates?

BACKGROUND: Bureau of Labor Statistics figures have shown declines in injury and illness rates over the past 25 years. It is unclear what factors are contributing to that decline. METHODS: Connecticut injury and illness data was industry-adjusted to account for the shifts in employment by industry sector for the 25-year period from 1976 to 2000. Additional adjustment was made for manufacturing sub-sectors, since declines in manufacturing employment accounted for the largest proportion of the shift in injuries over that period. RESULTS: Approximately 18% of the decline in injury and illness rates was associated with a shift in employment from more hazardous to less hazardous industries. Shifts in manufacturing sub-sectors accounted for an additional 5.7% of the decline. CONCLUSION: A significant proportion of the decline in injury and illness rates appears to be due to demographic shifts in industry composition.

Syndromes from segmental vibration and nerve entrapment: observations on case definitions for carpal tunnel syndrome.

OBJECTIVES: The purpose of this paper is to assess the overlap and stability of two different case definitions of carpal tunnel syndrome CTS. The analysis considers the association between different case definitions and objective tests (sensory nerve conduction velocities, SNCVs and vibrotactile perception thresholds, TTS), and the natural history of CTS, in the context of two vibration-exposed cohorts. METHODS: Clinical CTS cases were defined in two ways: (1) by the study physician using fixed criteria, and; (2) by questionnaire and hand diagram. SNCV in median and ulnar nerves was measured for digital, transpalmar, and transcarpal segments, and conventionally as from wrist-digit. Skin temperature was assessed as a point measurement by thermistor and regionally by thermal imaging. VTTs were determined at the bilateral fingertips of the third and fifth digits using a tactometer meeting the requirements of ISO 13091-1 (ISO 2001). The subjects were cohorts of shipyard workers in 2001 and 2004, and dental hygienists in 2002 and 2004. RESULTS: Results are reported for 214 shipyard workers in 2001 and 135 in 2004, and for 94 dental hygienists in 2002 and 66 in 2004. In 2001, 50% of shipyard workers were diagnosed as CTS cases by at least one of the diagnostic schemes, but only 20% were positive by both criteria. Among study physician diagnosed cases, 64% were CTS negative in 2001, 76% were negative in 2004, 13% were positive in both years, 22% became negative after being positive, and 11% became positive after being negative. For only study physician diagnosed CTS did VTTs differ between cases differ and non-cases in digit 3; there was no such distinction in digit 5. The dental hygienists had little CTS. CONCLUSION: Clinical case definitions of CTS based on diagrams and self-assessment, and clinical evaluation have limited overlap. Combining clinical criteria to create a more narrow or specific case definition of CTS does not appear to predict SNCV. The natural history of CTS suggests a protean disorder with considerable flux in case status over time.

The effect of different warming methods on sensory nerve conduction velocity in shipyard workers occupationally exposed to hand-arm vibration.

OBJECTIVES: Segmental sensory nerve conduction velocity (SNCV) was measured from the wrists to the hands and digits in a population of 134 (126 men and 8 women) vibration-exposed shipyard workers following systemic warming using a bicycle ergometer. Results were compared to earlier nerve conduction tests, identical in execution, except that the warming process was segmental and cutaneous. The study was designed to investigate whether SNCVs, which were selectively slow in the fingers after segmental cutaneous (skin surface) warming, would be affected differently by systemic warming. METHODS: Wrist-palm, palm-proximal digit, and digital sensory nerve segments were assessed antidromically by stimulating at the wrist with recording electrodes placed distally. The same subjects were cutaneously warmed in 2001 to >or=31 degrees C and were systemically warmed 28 months later in 2004 by ramped sustained exercise to 100 W for 12 min. Skin temperatures were measured by traditional thermistry and by infrared thermal images taken over the hand and wrist surfaces. RESULTS: When systemic warming was compared to segmental cutaneous warming, SNCVs were increased by 15.1% in the third digit and 20.4% in the fifth digit of the dominant hand. Respective increases in the non-dominant hand were 11.0% and 19.4%. A strong association between increased surface skin temperature and faster SNCV, which had been observed after segmental cutaneous warming, was largely eliminated for both digit and palmar anatomic segments after systemic warming. Significant differences in SNCV between vibration-exposed and non-exposed workers, which had been observed after segmental cutaneous warming, were eliminated after systemic warming. Systemic warming had only a small effect on the wrist-palm (transcarpal) segmental SNCVs. CONCLUSIONS: Reduced SNCV in the digits was observed in vibration-exposed and non-exposed workers. Substituting exercise-induced systemic warming for segmental cutaneous warming significantly increased SNCV in the digits and appeared to reduce differences in SNCV between vibration-exposed and non-exposed workers. These findings persisted despite a substantial time interval between tests, during which the subjects continued to work. There may be more general implications for diagnosing clinical conditions in industrial workers, such as the carpal tunnel syndrome and the hand-arm vibration syndrome.

The Hand-Arm Vibration International Consortium (HAVIC): prospective studies on the relationship between power tool exposure and health effects.

OBJECTIVES: The Hand-Arm Vibration International Consortium (HAVIC) is a collaboration of investigators from Europe and North America studying health effects from hand-arm vibration (HAV). Features include prospective design, cross-cohort exposure, and health assessment methods. METHODS: Two new cohorts (dental hygienists and dental hygiene students), two existing cohorts (Finnish forest workers, and Swedish truck cab assemblers), and a previous population (US shipyard workers) are included. Instruments include surveys, quantitative medical tests, physical examination, and work simulation and data logging to assess exposure. New methods were developed for nerve conduction and data logging. RESULTS: Findings on the relationship between nerve conduction and skin temperature in HAV-exposed subjects resulted in a new approach to subject warming. CONCLUSIONS: Integrating established cohorts has advantages over de novo cohort construction. Complex laboratory tests can be successfully adapted for field use.

A population based survey of ergonomic risk factors in Connecticut: distribution by industry, occupation, and demographics.

BACKGROUND: Risk factors for upper-extremity musculoskeletal disorders (MSD) include biomechanical factors (force, repetition, posture) and psychosocial factors (job stress). A population-based telephone survey of workers in Connecticut characterized these risk factors by industry, occupation, gender, and age. FINDINGS: Risk factors were highly prevalent in the Connecticut workplace, but varied considerably by industry, occupation, gender, and age. Risk factors clustered based on (a) physically active occupations/industries (pushing/pulling, reaching, bent wrists, and tool use), (b) physically passive occupations/industries (static postures, stress, and computer use), and (c) repetitive motion exposures. Physically active patterns had the highest prevalence in construction/agriculture/mining, followed by (in order) wholesale/retail trade, utilities, manufacturing, services, government, and finance/insurance. Physically passive patterns tended to reverse this order, and repetitive motion followed a third pattern. Physically active risk factors were typically higher for males, though this varied by industry and occupation. All risk factors except for stress show a steady decrease with age. CONCLUSION: Almost 1,000,000 Connecticut workers are estimated to be exposed to repetitive work, bent wrists, and job stress. Workers in high exposure industries and occupations should be closely evaluated for risks, with outreach to industries for preventive ergonomic interventions as preferred to treatment for conditions that arise.

The ergonomics of caring for children: an exploratory study.

BACKGROUND: Caring for one's children is among the most ubiquitous of occupations. However, few studies have examined the ergonomic risks involved in parents caring for children at home. PURPOSE: The purpose of this study was to identify the frequency, type, and severity of musculoskeletal symptoms in parents of children less than 4 years old. The study further examined the factors that contribute to musculoskeletal pain in this sample. METHODS: A convenience sample of 130 parents with children younger than 4 years old completed a seven-page survey that included questions related to the parents' demographics, their musculoskeletal discomfort, their performance of child-care tasks with high biomechanical risks (such as carrying a child in a car seat), and parents' perceived psychological strain related to caring for their children. RESULTS: Ninety-two percent (92%) of the providers were mothers. Sixty-six percent (66%) of the sample reported the presence of musculoskeletal pain. The parts of the body most affected were the low back (48%), neck (17%), upper back (16%), and shoulders (11.5%). Factors associated with musculoskeletal pain were performing child-care tasks defined as having high biomechanical risks (p = .001), the perception that caring for children is highly demanding (p = .003), and performing hobbies less than 1 hour per week (p = .04). Parents' working status, age, and participation in other daily activities were not significantly related to musculoskeletal discomfort. CONCLUSION: This study demonstrates the high prevalence of musculoskeletal pain in parents of children under the age of 4 years. It underscores the association between physical and psychological factors in the development of musculoskeletal discomfort. It suggests the need for occupational therapy wellness programs that focus on preventing musculoskeletal discomfort and providing support for the parenting role.

Occupational disease in Connecticut: 2002.

Data on chronic work-related conditions were compiled for Connecticut for 2002 from physician reports to the Occupational Disease Surveillance System (ODSS), the Workers' Compensation (WC) Commission, and the Bureau of Labor Statistics (BLS)/ ConnOSHA survey. Physicians reported 2,082 cases of occupational disease in Connecticut in 2002, approximately half of the estimate of 4,388 cases using the BLS/ ConnOSHA methodology. Cases in the ODSS included 921 (44%) reports of musculoskeletal disorders (MSD), 476 adult lead poisonings (based on lab reporting), 338 skin disorders, and 283 respiratory and lung conditions. There were increased reports in both the ODSS and WC systems over 2001 figures. Emerging conditions included vibration-related MSD, a mold-related respiratory outbreak, and Lyme Disease/tick bites among outdoor workers. Only 86 physicians from 29 clinics reported cases indicating widespread under-reporting of occupational disorders among community physicians despite Connecticut statutes mandating reporting of work-related disease.

Occupational disease in Connecticut, 2001.

OBJECTIVE: To quantify the magnitude and patterns of occupational disease in Connecticut. METHODS: Collecting and standardizing data on occupational diseases from the Bureau of Labor Statistics Survey, workers' compensation reports, and physician reports for the 2001 calendar year, and using capture-recapture analysis to estimate unreported cases. RESULTS: The rate of occupational illnesses dropped to 35.1 cases per 10,000 workers in 2001 (from 6,396 cases reported in 2000 to 5,514 in 2001). Musculoskeletal disorders (MSD) accounted for more than half of the cases. There was a low proportion of cases that were reported to both workers compensation and the Department of Public Health, indicating widespread under-reporting of cases; it is estimated that there are actually over 30,000 cases of occupational disease each year. CONCLUSIONS: Occupational disease is one of the highest incident conditions of any type of medical condition, and there is a high level of under-reporting.

Occupational disease in Connecticut, 2000.

BACKGROUND: Occupational illnesses in Connecticut are tracked to better understand patterns and trends by industry, cause, and time, which allows for interventions such as cluster investigations and education. METHODS: Data were collected for occupational illnesses from three data sources: the Connecticut Bureau of Labor Statistics (BLS) annual survey, workers' compensation reports, and physician reports. FINDINGS: There were 6,396 reports of occupational illness in Connecticut in 2000. Reports increased sharply based on two of the three databases. Reports were dominated by musculo-skeletal disorders (MSD), followed by lung conditions. Manufacturing, the State of Connecticut, and municipalities tended to have the highest number of cases and rates. Acute respiratory conditions were the most common lung condition, followed by occupational asthma and asbestos-related conditions. CONCLUSION: Occupational illnesses are very prevalent in Connecticut and appear to be increasing. Improved diagnosis and reporting are needed to improve patient care and to direct preventive efforts.

A pilot study of hand and arm musculoskeletal disorders in dental hygiene students.

PURPOSE: This study was designed to determine the relationship between musculoskeletal disorder symptoms and vibration in dental hygiene students as a pilot for a larger scale study. METHODS: A custom-designed questionnaire was distributed to three intact student groups: those accepted for admission, those at the end of the first year, and graduating students at the end of the second year. Data were analyzed using tabular and multivariate analysis. Students increased their use of ultrasonic instruments from 0.2 to 2.8 to 7.3 hours per week over the three years. Dental hygiene students with symptoms of numbness in the upper extremities used ultrasonic scalers a mean of 8.2 hours per week compared to 2.8 hours of use by students with no upper extremity numbness. These students also used manual instruments 10.1 hours and 4.8 hours per week, respectively. RESULTS: Logistic regression revealed a significant association between hours of use of ultrasonics and upper extremity numbness/tingling, with an odds ratio of 1.10 for each increased hour of use (95% CI 1.01-1.19; chi-square = 4.9). A similar result was found for manual instrument use. CONCLUSION: Results indicate that musculoskeletal disorder symptoms may increase with the use of ultrasonic and/or manual instruments.

Transitioning from traditional to green cleaners: an analysis of custodian and manager focus groups.

Custodians represent one of the largest occupational groups using cleaning agents, and yet their voices are infrequently heard in relation to the introduction of "green" cleaners and the laws regarding environmentally preferable products (EPP). This study reflects worker voices on use and effectiveness of chemicals, as well as incentives and obstacles for green cleaning programs. Sixty-four custodians and staff participated in 10 focus groups. Data were entered into Atlas Ti and the constant comparative method of qualitative data analysis was used to identify themes. Themes included satisfaction in a "well-done" job, more effort required for job, lack of involvement in EPP selection process, EPP's ease of use for workers with English as a Second Language (ESL), misuse of disinfectants, health complaints, and need for training. This study shows that custodians have a voice, and that improved communication and feedback among all the stakeholders are needed to make the transition to green cleaning more effective.

Talking about health: correction employees' assessments of obstacles to healthy living.

OBJECTIVE: Describe health risks/obstacles to health among correctional employees. METHODS: Mixed-methods approach combined results from four focus groups, 10 interviews, 335 surveys, and 197 physical assessments. RESULTS: Obesity levels were higher than national averages (40.7% overweight and 43.3% obese), with higher levels associated with job tenure, male gender, and working off-shift. Despite widespread concern about the lack of fitness, leisure exercise was higher than national norms. Respondents had higher levels of hypertension than national norms, with 31% of men and 25.8% of women hypertensive compared with 17.1% and 15.1% for national norms. Stress levels were elevated. Officers related their stress to concerns about security, administrative requirements, and work/family imbalance. High stress levels are reflected in elevated levels of hypertension. CONCLUSIONS: Correctional employees are at high risk for chronic disease, and environmental changes are needed to reduce risk factors.

Musculoskeletal disorders of the neck and shoulder in the dental professions.

The prevalence of and risk factors for neck and shoulder disorders among dental practitioners (dentists, dental hygienists, and dental assistants) is reviewed. Dentists report 26-73% period prevalence of neck symptoms over the previous year, and 20-65% with shoulder symptoms. Dental hygienists report even higher rates, from 54-83% for neck and 35-76% for shoulder, and dental assistants in between (38-62% and 27-62% respectively). Symptoms begin to appear early in the career, with significant increases upon starting clinical practice. Significant social and economic consequences have been reported, including leaving the profession or reducing hours. While ergonomic improvements appear to have some positive impact, these have not been well studied, and some changes (such as the historic shift from standing to seated posture) may have moved risk from the lower back to the upper extremities. Static awkward posture, particularly those with isometric contractions of the trapezius, has been identified as a risk factor particular to these occupations. Ergonomic improvements, health promotion, and organizational interventions have been suggested as needs for reducing risk.

Health promotion site selection blues: barriers to participation and implementation.

OBJECTIVE: To shed light on research-to-practice challenges in workplace health promotion research. METHODS: More than 1200 companies serviced by a national insurer were assessed by measures, including management surveys, and insurance premium costs and risk profile. A 21-item Workplace Readiness Checklist was the core assessment tool. Quantitative and qualitative measures were used to identify 12 to 14 companies deemed most "ready for change." RESULTS: The four priority candidate companies decided against participation. A post hoc survey to evaluate reasons for non-participation identified factors such as time allocations, the deteriorating economic environment, and the participatory nature of the interventions proposed for half of the study sites. Differing priorities within management also seemed to interfere with participation. CONCLUSIONS: A highly structured process for determining corporate readiness for participatory health promotion produced contradictory results.