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PubMed2005

Development and evaluation of a multifaceted ergonomics program to prevent injuries associated with patient handling tasks.

PROBLEM STATEMENT: Nurses have one of the highest rates of work-related musculoskeletal injury of any profession. Over the past 30 years, efforts to reduce work-related musculoskeletal disorders in nurses have been largely unsuccessful. SPECIFIC AIMS: The primary goal of this program was to create safer working environments for nursing staff who provide direct patient care. Our first objective was to design and implement a multifaceted program that successfully integrated evidence-based practice, technology, and safety improvement. The second objective was to evaluate the impact of the program on injury rate, lost and modified work days, job satisfaction, self-reported unsafe patient handling acts, level of support for program, staff and patient acceptance, program effectiveness, costs, and return on investment. INTERVENTION: The intervention included six program elements: (1) Ergonomic Assessment Protocol, (2) Patient Handling Assessment Criteria and Decision Algorithms, (3) Peer Leader role, "Back Injury Resource Nurses", (4) State-of-the-art Equipment, (5) After Action Reviews, and (6) No Lift Policy. METHODS: A pre-/post design without a control group was used to evaluate the effectiveness of a patient care ergonomics program on 23 high risk units (19 nursing home care units and 4 spinal cord injury units) in 7 facilities. Injury rates, lost work days, modified work days, job satisfaction, staff , and patient acceptance, program effectiveness, and program costs/savings were compared over two nine month periods: pre-intervention (May 2001-January 2002) and post-intervention (March 2002-November 2002). Data were collected prospectively through surveys, weekly process logs, injury logs, and cost logs. RESULTS: The program elements resulted in a statistically significant decrease in the rate of musculoskeletal injuries as well as the number of modified duty days taken per injury. While the total number of lost workdays decreased by 18% post-intervention, this difference was not statistically significant. There were statistically significant increases in two subscales of job satisfaction: professional status and tasks requirements. Self-reports by nursing staff revealed a statistically significant decrease in the number of 'unsafe' patient handling practices performed daily. Nurses ranked program elements they deemed to be "extremely effective": equipment was rated as most effective (96%), followed by No Lift Policy (68%), peer leader education program (66%), ergonomic assessment protocol (59%), patient handling assessment criteria and decision algorithms (55%), and lastly after action reviews (41%). Perceived support and interest for the program started at a high level for managers and nursing staff and remained very high throughout the program implementation. Patient acceptance was moderate when the program started but increased to very high by the end of the program. Although the ease and success of program implementation initially varied between and within the facilities, after six months there was strong evidence of support at all levels. The initial capital investment for patient handling equipment was recovered in approximately 3.75 years based on annual post-intervention savings of over $200,000/year in workers' compensation expenses and cost savings associated with reduced lost and modified work days and worker compensation. CONCLUSIONS: This multi-faceted program resulted in an overall lower injury rate, fewer modified duty days taken per injury, and significant cost savings. The program was well accepted by patients, nursing staff, and administrators. Given the significant increases in two job satisfaction subscales (professional status and task requirements), it is possible that nurse recruitment and retention could be positively impacted.

Absenteeism↗
PubMed2002

Development of a systematic observation protocol of physical exposure of the back: a preliminary study.

OBJECTIVE: At present there is no systematic observation protocol for the assessment of the multi-factorial aspects of physical exposure related to the back used within the constraints of occupational epidemiological research. In this context, a new preliminary systematic observation protocol is proposed to assess exposure to physical loading of the back using nine categories of physical risk factors: the SOPE back protocol. The objective of this study was to investigate whether the new protocol can correctly identify the level of exposure related to measured physical loading of the back. METHODS: The subjects of this closed cohort study were 451 manual workers at a natural gas distribution company. The assessment of exposure was made with the protocol using groups with different job titles. The workers were followed for a 2 yr period to establish the risk of a new occurrence of complete disability related to the back (NOCD back injury) in each job grouping. RESULTS: Based on the median of the total scores derived from the protocol, two levels of exposure were identified (high and low). CONCLUSION: Taking into account the limitations of this study, the protocol in development may be a good tool to establish two levels of exposure to physical loading of the back in large epidemiological studies of occupational low back pain. Further research is needed to replicate these results with larger samples and to test the reliability and predictive validity of the protocol.

Adult↗
PubMed1992

Lifting capacity. Indices of subject effort.

The association between manual materials handling and occupational low back injuries has generated a wide variety of devices and protocols for testing lifting capacity. The validity of these tests depends critically on the subject's effort during the evaluation. This study compares the accuracy of several physiologic effort indices in identifying maximal and submaximal lifting efforts. Twenty-one men and twenty-three women free from back pain underwent isometric, isokinetic, and isoinertial tests of lifting capacity applying 50 and 100% efforts in random order. Effort indices included isokinetic force/distance curve variation, isoinertial peak force: weight ratios and peak force--weight differences, and heart rates and peak force variances for all three modes. Differences between 50 and 100% effort means were significant at P less than 0.01 for isokinetic force/distance curve variation, isoinertial peak force: weight ratios, and peak force--weight differences, and for heart rates in all three modes using analysis of variance. Differences were not significant (P greater than 0.05) for peak force variances in any mode using Wilcoxon Signed Rank Tests. According to a discriminant analysis model with optimal cutoff values, the only effort indices with better than 60% accuracy in identifying maximal and submaximal efforts were isokinetic force/distance curve variation (74%) and isoinertial peak force: weight ratios (69%), peak force--weight differences (62%) and heart rates (65%). For each index, subjects were divided into three groups according to whether their lifting outputs during 50% effort bouts were greater than, equal to, or less than one half their outputs in the 100% effort bouts.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed2000

Trunk muscle activation and low back loading in lifting in the absence of load knowledge.

People who know the actual mass of an object to be lifted normally prepare themselves before attempting a lift to control the movement and to minimize low back loading. In this study, the trunk muscular reactions and low back torque were investigated in the situation in which the individual did not know the actual mass but only had some idea of the range within which the mass lay. Nine males lifted boxes weighing 6.5 or 16.5 kg under the condition in which they knew the actual mass before attempting a lift (the 'known' condition) and the condition in which they only had the information that the mass would be within the range of 6.5-16.5 kg (the 'unknown' condition). The ground reaction forces and body movements were measured in the trials and, from these, the L5/S1 torques were calculated. The activation of back and abdominal muscles was also measured. For the 6.5 kg weight, a higher (16%) back muscle activation in grasping the box and a higher (10%) peak L5/S1 torque in actual lifting were observed in the 'unknown' compared with the 'known' weight condition. For the 16.5 kg weight, the back muscle activation was lower (10%) during grasping, and higher (10%) during lifting in the 'unknown' compared with the 'known' weight condition. Knowledge of the load had no effect on the activation of the abdominal muscles. It was concluded that in the so-called 'unknown' conditions, the risks of low back injury were increased in comparison with the conditions where the actual weight was known in advance.

Abdominal Muscles↗
PubMedDate not supplied

Ergonomic and demographic issues reported by palliative care workers in southern Taiwan.

AIM: To investigate ergonomic and demographic issues reported by palliative care workers in southern Taiwan. METHOD: A structured questionnaire was completed by staff members from 11 nursing homes within southern Taiwan. Questions focused on age, sex, height, weight, shift-work details, duration of current employment, nature of current employment, the presence of injury and pain during the past 12 months, the phase lag before the onset of injury, and sick leave details. RESULTS: A total of 125 health-care workers were recruited. Most were female (89.3 percent) and employed full-time (64.8 percent) as patient care assistants (55.2 percent). Most workers were regularly involved in patient-handling tasks (61.6 percent). Almost half (36.8 percent) had suffered a musculoskeletal disorder within the previous year. Lower back injury was reported by 12.0 percent of all employees. Changing patients'clothes and changing their bed linen were associated statistically with musculoskeletal injury (odds ratio (OR) 2.9, 95 percent confidence interval (CI) 1.4-6.3 and OR 2.8, 95 percent CI 1.4-6.1), respectively. Moving the patients was also related to injury during our research (OR 2.5, 95 percent CI 1.2-5.4). CONCLUSION: This study has revealed various ergonomic and demographic issues reported by palliative care workers in southern Taiwan for the first time. The prevalence of certain injuries and symptoms are different from other reports.

Accidents, Occupational↗
PubMed1998

[Occupational accidents involving the spine: study on nurses at a university hospital].

In order to evaluate certain characteristics of the occurrence of occupational back injury among nursing staff, all workers affected during a period of six months were interviewed. These individuals were 43.2 years old on average and were basically female. There was no statistical significative difference showing a predominance among working turns and among the different nursing ranks involved in the accident. Most of the accidents happened within the hospital unit while they were moving or transporting patients and equipment, because of falls due to slipping floor. The most affected regions of the spinal column were the lumbar and cervical portions. The majority of the subjects affirmed that they had some type of back problem.

Accidental Falls↗
PubMed1996

The work hardening program and subsequent return to work of a client with low back pain.

Billions of dollars are spent annually for the costs associated with workers' compensation cases. Chronic low back injuries have been traditionally the most costly cases. In addition to the physical problems, psychosocial issues emerge which confound conventional treatment and prolong resolution. Work hardening programs were developed to address the many issues of the occupationally injured chronic patient. This case study examines the treatment of a 54-year-old male who sustained an injury to his lumbar spine during employment as a boiler mechanic and subsequently had been out of work for 8 months. The article describes the interdisciplinary work hardening treatment (5-week duration) and the progressive resistive work circuit which preceded the client's return to work. It is concluded that work hardening programs can be cost-effective for insurers, as in this case, saving an estimated $44,000. An aggressive return to work program should also be considered in earlier stages of injury as a way of preventing the development of chronic disability for which the human costs are immeasurable.

Chronic Disease↗
PubMed1999

Interaction between voluntary and postural motor commands during perturbed lifting.

STUDY DESIGN: An experimental study was conducted to evaluate the effect of an unexpected postural perturbation during a lifting task. OBJECTIVES: To investigate electromyographic responses in the erector spinae to a postural perturbation, simulating slipping, during an ongoing voluntary lifting movement. It was hypothesized that specific combinations of voluntary movement and postural perturbation present a situation in which injury caused by a rapid switch between conflicting motor commands can occur. SUMMARY OF BACKGROUND DATA: Studies of postural perturbations have mainly focused on behavior during static tasks such as quiet, upright standing. To date, there are no published studies of the effect of a perturbation during an ongoing voluntary lifting movement. METHODS: Subjects standing on a movable platform were exposed to random perturbations while lifting a 20-kg load. Muscle activity was recorded from flexor and extensor muscles of the trunk and hip. Trunk flexion angle in the sagittal plane was recorded with a video system. RESULTS: Perturbations forward were followed by an increased activity in erector spinae superimposed on the background activation present during the lift, indicating that both the voluntary and postural motor programs caused an activation of erector spinae. During backward perturbation, however, there was a sudden cessation of erector spinae activity followed by an extended period of rapid electromyographic amplitude fluctuations while the trunk was flexing, indicating an eccentric contraction of the erector spinae. CONCLUSIONS: This erratic behavior with large electromyographic amplitude fluctuations in the erector spinae after a backward slip during lifting may indicate a rapid switch between voluntary and postural motor programs that require conflicting functions of the back muscles. This may cause rapid force changes in load-carrying tissue, particularly in those surrounding the spine, thus increasing the risk of slip-and-fall-related back injuries.

Adult↗
PubMedDate not supplied

Injury in the workplace: Criminal Injury Compensation Authority.

Bob was a staff nurse in the accident and emergency department and was used to dealing with drunk people at weekends. One Friday night, however, he was caring for a patient who had been knocked down by a car. The man's friends were extremely drunk and attempted to interfere with their friend's treatment. Bob asked them to leave, but they refused. He warned them that he would be calling the police but one of them lunged at Bob, who fell backwards against a trolley causing a severe back injury. He was off work for several weeks and was warned that he might never fully recover. How can he obtain compensation?

Accidents, Occupational↗
PubMed1996

Should the gap be filled between guidelines and actual practice for management of low back pain in primary care? The Quebec experience.

STUDY DESIGN: A prospective cohort study. OBJECTIVES: To describe health services utilization for low back pain in the province of Quebec, Canada, and to compare it with North American guidelines. SUMMARY OF BACKGROUND DATA: The Quebec Task Force and the Agency for Health Care Planning and Research (United States) published guidelines for the management of low back pain in 1987 and 1994, respectively. METHODS: A cohort of 2147 adults with low back pain identified at the Quebec Worker's Compensation Board were selected randomly and observed over 2 years' time for their health care utilization profile. RESULTS: During the study period, 57.8% of the workers still under active care 7 weeks after their back injury had not yet been referred to a specialist. Specialized imaging techniques were obtained by 4.5% of the patients, with a delay of 7 weeks or more in 66% of them. Surgery was performed on 1.6% of the patients. The presence of an initial specific diagnosis and proximity to a university hospital significantly increased utilization rate and reduced the delays. CONCLUSION: Health services utilization for back pain in Quebec was equal or lower to what currently is practiced elsewhere, but access to specialists was not meeting the current recommendations. This would represent a 12% net increase in new specialist contacts and a quicker access in 39% who saw a specialist. Before such an effort can be considered, health care planners will need a better definition of the role of the specialist consultation in the guidelines and scientific evidence specifically addressing their benefit in primary care, especially in the absence of a specific diagnosis.

Adolescent↗
PubMed1998

The contribution of job satisfaction to the transition from acute to chronic low back pain.

OBJECTIVE: To determine the extent to which job satisfaction predicts pain, psychological distress, and disability 6 months after an initial episode of low back pain (LBP). DESIGN: A longitudinal design was used to follow an inception cohort experiencing first-episode low back pain with assessment at 2 and 6 months after pain onset. SETTING: Urban medical center outpatient orthopedic clinic. PATIENTS: The consecutive sample was comprised of 82 men with initial-onset acute LBP (T6 or below, daily pain for 6 to 10 weeks). INTERVENTION: Usual orthopedic care. MAIN OUTCOME MEASURES: The primary study outcomes were pain (Descriptor Differential Scale, Visual Analog Scales); disability (Sickness Impact Profile, Quality of Well-Being); and psychological distress (Beck Depression Inventory, Hamilton Rating Scale for Depression, Automatic Thoughts Questionnaire); predictor variables were orthopedic impairment (Waddell Physical Impairment Index) and job satisfaction (Job Descriptive Index, Work APGAR). RESULTS: Measures of job satisfaction, pain, disability, and psychological distress at baseline and 6 months after pain onset were separately reduced into factors using principle components factor analysis. In hierarchical multiple regression analyses, baseline job satisfaction significantly predicted variance in outcome scores at 6 months after pain onset, beyond the variance explained by control factors (demographics; baseline pain, mood, and disability; orthopedic impairment). Zero-order correlations between job satisfaction and orthopedic impairment were small and nonsignificant, suggesting that these two variables act independently in predicting outcome. Although type of work performed (desk work or work requiring light, moderate, or heavy lifting) and social position were correlated with job satisfaction at baseline, neither contributed to the prediction of outcome at 6 months. CONCLUSIONS: Satisfaction with one's job may protect against development of chronic pain and disability after acute onset back pain and, alternatively, dissatisfaction may heighten risk of chronicity. Vocational factors should be considered in the rehabilitation of acute back injury.

Acute Disease↗
PubMed1998

A new approach to measuring recovery in injured workers with acute low back pain: Resumption of Activities of Daily Living Scale.

BACKGROUND AND PURPOSE: Spontaneous recovery, job satisfaction, and multiple other factors make return to work a highly problematic indicator. Available client questionnaires fail to consider what was "normal" or "usual" prior to low back injury. Based on themes described by injured persons, we suggest a new approach to determining "recovery"--the Resumption of Activities of Daily Living (RADL) Scale. SUBJECTS: Injured persons and their therapists from 8 different clinics participated in the study. METHODS: Twenty subjects completed the RADL twice, about 2 days apart, for assessment of test-retest reliability. The RADL was administered, along with other questionnaires, to a separate group of 94 subjects at clinic entry and at discharge or 3 weeks after clinic entry. Both subjects and clinicians made baseline predictions concerning return to work and global ratings of improvement and ability to return to work at follow-up. RESULTS: The RADL showed good psychometric properties (i.e., test-retest reliability, internal consistency, responsiveness to change, and discriminative abilities). CONCLUSION AND DISCUSSION: The RADL provides a new, standardized measure for assessing the extent of recovery from the time of injury to initiation of treatment, and concurrent with the course of treatment, using the individual's customary level of functioning as the benchmark.

Activities of Daily Living↗
PubMed1997

Back pain in the workplace. What you lift or how you lift matters far less than whether you lift or when.

In spite of more than 50 years of concerted effort to diminish task demand, the incidence of compensable back injuries has not wavered. Before we persist for another 50 years in the quest for the "right way to lift," we should consider recent multivariate clinical investigations that suggest alternative approaches. Because task context is at least as important as task content in this regard, it follows that including regional backache under the rubric of "compensable injury" demands reconsideration. Likewise, rather than pursuing the "right way to lift," the more reasonable and humane quest might be for workplaces that are comfortable when we are well and accommodating when we are ill.

Adolescent↗
PubMedDate not supplied

Educating our children: the pilot school program.

This article describes a back injury prevention program for children between the ages of 8 and 11. The aims of this program are: (1) to teach awareness, (2) to start good habits early and change existing bad habits, and (3) to encourage regular stretching and strengthening exercises.

Back Pain↗
PubMed1994

Handle with care.

25% of all midwives have taken sick leave because of back injury. The onus is on the employer to see that employees are not made to undertake risky manual handling work. The place of confinement should be checked beforehand for suitability and safety. Temporary staff are covered by the risk assessment process, but independent midwives are not.

Back Pain↗
PubMed2001

Functional assessment taxonomy relevant to low-back impairments.

A taxonomy of functional assessment constructs was developed to help the Social Security Administration refine the measurements of work disability. This report addresses content validity of the new taxonomy by examining the relevance of its constructs to a specific disability, and by examining the relationship between these constructs and constructs in other taxonomies. Seven experts linked the new taxonomy to consequences of low-back impairments. The selected constructs were compared to those reported independently by patients (Harper AC, Harper DA, Lambert L, Andrews HB, Lo SK, Ross FM, Straker LM. Pain 1992; 50(2): 189-195). The International Classification of Impairments, Disabilities and Handicaps served to bridge the two exercises. The findings reveal that it is feasible to use the taxonomy to define the impact of a specific disability and consequently link it to a set of standard measurements. Low-back impairments may be best assessed through measures of physical functional limitations, vocational impact, and interpersonal and emotional behavior. The study did not yield cognitive and intellectual measures that were relevant to this impairment.

Back Injuries↗