Quantifying Clinical Opportunities at the Navy Trauma Training Center

INTRODUCTION

Military-Civilian partnerships (MCPs), such as the Navy Trauma Training Center, are an essential tool for training military trauma care providers. Despite Congressional and military leadership support, sparse data exist to quantify participants' clinical opportunities in MCPs. These preliminary data from an ongoing Navy Trauma Training Center outcomes study quantify clinical experiences and compare skill observation to skill performance.

MATERIALS AND METHODS

Participants completed clinical logs after each patient encounter to quantify both patients and procedures they were involved with during clinical rotations; they self-reported demographic data. Data analyses included descriptive statistics and chi-square statistics to compare skills observed to skills performed between the first and second half of the 21-day course.

RESULTS

A sample of 47 Navy personnel (30 corpsmen, 10 nurses, 3 physician assistants, 4 physicians) completed 551 clinical logs. Most logs (453/551) reflected experiences in the emergency department, where corpsmen and nurses each spent 102.0 hours, and physician assistants and physicians each spent 105.4 hours. Logs completed per participant ranged from 1 to 31, (mean = 8). No professional group was more likely than others to complete the clinical logs. Completion rates varied by cohort, both overall and by clinical role. Of emergency department logs, 39% reflected highest acuity patients, compared with 21% of intensive care unit logs, and 61% of operating room logs. Penetrating trauma was reported on 16.5% of logs. Primary and secondary trauma assessments were the most commonly reported clinical opportunities, followed by obtaining intravenous access and administration of analgesic medications. With few exceptions, logs reflected skill observation versus skill performance, a ratio that did not change over time.

CONCLUSION

Prospective real-time data of actual clinical activity is a crucial measure of the success of MCPs. These preliminary data provide a beginning perspective on how these experiences contribute to maintaining a skilled military medical force.

Preliminary Data on Trauma Knowledge, Confidence, and Stress During Navy Trauma Training

INTRODUCTION

The Navy Trauma Training Center (NTTC) is a military-civilian partnership that provides advanced trauma training for application across the range of military operations while exposing military medical personnel to high-volume and high-acuity trauma. Few published data evaluate the outcomes of military-civilian partnerships, including NTTC. The purpose of this study is to evaluate the knowledge, confidence, and stress of NTTC participants before, at mid-point, and after completion of the program. Participants include corpsmen (HM), nurses (RNs), physician assistants (PAs), and physicians (MDs).

MATERIALS AND METHODS

These are preliminary data from an ongoing prospective, observational study with repeated measures. Included are participants that complete NTTC training. Pre-training measures include a demographic questionnaire, trauma knowledge test, Confidence survey, and the Perceived Stress Scale. These same instruments are completed at mid-training and at the conclusion of the NTTC curriculum. Data were analyzed using paired t-tests and linear mixed models.

RESULTS

The sample was composed of 83 participants (49 HM, 18 RNs, 4 PAs, and 12 MDs. Knowledge and confidence increased from baseline to post-NTTC for each clinical role (P < .05). Stress for all roles was low and stable over time (P > .05).

CONCLUSIONS

These preliminary data suggest that, as expected, trauma-related knowledge and confidence increase significantly with training at NTTC. Stress was low and stable over time. These data from a small sample of participants indicate NTTC training is increasing participants' trauma knowledge and confidence to care for trauma casualties. Continued collection of data in the ongoing study will allow us to determine whether these early findings persist in the overall study sample and may help inform the optimal length of training needed.

Clinical symptoms, signs and tests for identification of impending and current water-loss dehydration in older people

BACKGROUND

There is evidence that water-loss dehydration is common in older people and associated with many causes of morbidity and mortality. However, it is unclear what clinical symptoms, signs and tests may be used to identify early dehydration in older people, so that support can be mobilised to improve hydration before health and well-being are compromised.

OBJECTIVES

To determine the diagnostic accuracy of state (one time), minimally invasive clinical symptoms, signs and tests to be used as screening tests for detecting water-loss dehydration in older people by systematically reviewing studies that have measured a reference standard and at least one index test in people aged 65 years and over. Water-loss dehydration was defined primarily as including everyone with either impending or current water-loss dehydration (including all those with serum osmolality ≥ 295 mOsm/kg as being dehydrated).

SEARCH METHODS

Structured search strategies were developed for MEDLINE (OvidSP), EMBASE (OvidSP), CINAHL, LILACS, DARE and HTA databases (The Cochrane Library), and the International Clinical Trials Registry Platform (ICTRP). Reference lists of included studies and identified relevant reviews were checked. Authors of included studies were contacted for details of further studies.

SELECTION CRITERIA

Titles and abstracts were scanned and all potentially relevant studies obtained in full text. Inclusion of full text studies was assessed independently in duplicate, and disagreements resolved by a third author. We wrote to authors of all studies that appeared to have collected data on at least one reference standard and at least one index test, and in at least 10 people aged ≥ 65 years, even where no comparative analysis has been published, requesting original dataset so we could create 2 x 2 tables.

DATA COLLECTION AND ANALYSIS

Diagnostic accuracy of each test was assessed against the best available reference standard for water-loss dehydration (serum or plasma osmolality cut-off ≥ 295 mOsm/kg, serum osmolarity or weight change) within each study. For each index test study data were presented in forest plots of sensitivity and specificity. The primary target condition was water-loss dehydration (including either impending or current water-loss dehydration). Secondary target conditions were intended as current (> 300 mOsm/kg) and impending (295 to 300 mOsm/kg) water-loss dehydration, but restricted to current dehydration in the final review.We conducted bivariate random-effects meta-analyses (Stata/IC, StataCorp) for index tests where there were at least four studies and study datasets could be pooled to construct sensitivity and specificity summary estimates. We assigned the same approach for index tests with continuous outcome data for each of three pre-specified cut-off points investigated.Pre-set minimum sensitivity of a useful test was 60%, minimum specificity 75%. As pre-specifying three cut-offs for each continuous test may have led to missing a cut-off with useful sensitivity and specificity, we conducted post-hoc exploratory analyses to create receiver operating characteristic (ROC) curves where there appeared some possibility of a useful cut-off missed by the original three. These analyses enabled assessment of which tests may be worth assessing in further research. A further exploratory analysis assessed the value of combining the best two index tests where each had some individual predictive ability.

MAIN RESULTS

There were few published studies of the diagnostic accuracy of state (one time), minimally invasive clinical symptoms, signs or tests to be used as screening tests for detecting water-loss dehydration in older people. Therefore, to complete this review we sought, analysed and included raw datasets that included a reference standard and an index test in people aged ≥ 65 years.We included three studies with published diagnostic accuracy data and a further 21 studies provided datasets that we analysed. We assessed 67 tests (at three cut-offs for each continuous outcome) for diagnostic accuracy of water-loss dehydration (primary target condition) and of current dehydration (secondary target condition).Only three tests showed any ability to diagnose water-loss dehydration (including both impending and current water-loss dehydration) as stand-alone tests: expressing fatigue (sensitivity 0.71 (95% CI 0.29 to 0.96), specificity 0.75 (95% CI 0.63 to 0.85), in one study with 71 participants, but two additional studies had lower sensitivity); missing drinks between meals (sensitivity 1.00 (95% CI 0.59 to 1.00), specificity 0.77 (95% CI 0.64 to 0.86), in one study with 71 participants) and BIA resistance at 50 kHz (sensitivities 1.00 (95% CI 0.48 to 1.00) and 0.71 (95% CI 0.44 to 0.90) and specificities of 1.00 (95% CI 0.69 to 1.00) and 0.80 (95% CI 0.28 to 0.99) in 15 and 22 people respectively for two studies, but with sensitivities of 0.54 (95% CI 0.25 to 0.81) and 0.69 (95% CI 0.56 to 0.79) and specificities of 0.50 (95% CI 0.16 to 0.84) and 0.19 (95% CI 0.17 to 0.21) in 21 and 1947 people respectively in two other studies). In post-hoc ROC plots drinks intake, urine osmolality and axillial moisture also showed limited diagnostic accuracy. No test was consistently useful in more than one study.Combining two tests so that an individual both missed some drinks between meals and expressed fatigue was sensitive at 0.71 (95% CI 0.29 to 0.96) and specific at 0.92 (95% CI 0.83 to 0.97).There was sufficient evidence to suggest that several stand-alone tests often used to assess dehydration in older people (including fluid intake, urine specific gravity, urine colour, urine volume, heart rate, dry mouth, feeling thirsty and BIA assessment of intracellular water or extracellular water) are not useful, and should not be relied on individually as ways of assessing presence or absence of dehydration in older people.No tests were found consistently useful in diagnosing current water-loss dehydration.

AUTHORS' CONCLUSIONS

There is limited evidence of the diagnostic utility of any individual clinical symptom, sign or test or combination of tests to indicate water-loss dehydration in older people. Individual tests should not be used in this population to indicate dehydration; they miss a high proportion of people with dehydration, and wrongly label those who are adequately hydrated.Promising tests identified by this review need to be further assessed, as do new methods in development. Combining several tests may improve diagnostic accuracy.

Predictors of thirst in intensive care unit patients

CONTEXT

Thirst is a pervasive, intense, and distressing symptom in intensive care unit (ICU) patients. Although thirst may be avoided and/or treated, scant data are available to help providers identify patients most in need.

OBJECTIVES

This study was designed to identify predictors of the presence, intensity, and distress of thirst in ICU patients.

METHODS

This descriptive cross-sectional study enrolled 353 patients from three ICUs (medical-surgical, cardiac, and neurological). To measure outcomes, patients were asked to report the presence of thirst (yes/no) and, if present, to rate its intensity and distress on zero to 10 numeric rating scales (10=worst). Predictor variables were demographic (e.g., age), treatment-related (e.g., opioids), and biological (e.g., total body water). Data were analyzed with logistic regression and truncated regression with alpha preset at 0.05.

RESULTS

Thirst presence was predicted by high opioid doses (≥ 50 mg), high furosemide doses (>60 mg), selective serotonin reuptake inhibitors, and low ionized calcium. Thirst intensity was predicted by patients not receiving oral fluid and having a gastrointestinal (GI) diagnosis. Thirst distress was predicted by mechanical ventilation, negative fluid balance, antihypertensive medications, and a GI or "other" diagnosis.

CONCLUSION

Thirst presence was predicted by selected medications (e.g., opioids). Thirst intensity and/or thirst distress were predicted by other treatments (e.g., mechanical ventilation) and medical diagnoses (e.g., GI). This is one of the first studies describing predictors of the multidimensional characteristics of thirst. Clinicians can use these data to target ICU patients whose thirst might warrant treatment.

Modeling hospital-acquired pressure ulcer prevalence on medical-surgical units: nurse workload, expertise, and clinical processes of care

OBJECTIVE

This study modeled the predictive power of unit/patient characteristics, nurse workload, nurse expertise, and hospital-acquired pressure ulcer (HAPU) preventive clinical processes of care on unit-level prevalence of HAPUs.

DATA SOURCES

Seven hundred and eighty-nine medical-surgical units (215 hospitals) in 2009.

STUDY DESIGN

Using unit-level data, HAPUs were modeled with Poisson regression with zero-inflation (due to low prevalence of HAPUs) with significant covariates as predictors.

DATA COLLECTION/EXTRACTION METHODS

Hospitals submitted data on NQF endorsed ongoing performance measures to CALNOC registry.

PRINCIPAL FINDINGS

Fewer HAPUs were predicted by a combination of unit/patient characteristics (shorter length of stay, fewer patients at-risk, fewer male patients), RN workload (more hours of care, greater patient [bed] turnover), RN expertise (more years of experience, fewer contract staff hours), and processes of care (more risk assessment completed).

CONCLUSIONS

Unit/patient characteristics were potent HAPU predictors yet generally are not modifiable. RN workload, nurse expertise, and processes of care (risk assessment/interventions) are significant predictors that can be addressed to reduce HAPU. Support strategies may be needed for units where experienced full-time nurses are not available for HAPU prevention. Further research is warranted to test these finding in the context of higher HAPU prevalence.

A biopsychosocial-spiritual model of chronic pain in adults with sickle cell disease

Chronic pain in adults with sickle cell disease (SCD) is a complex multidimensional experience that includes biologic, psychologic, sociologic, and spiritual factors. To date, three models of pain associated with SCD (i.e., biomedical model, biopsychosocial model for SCD pain, and Health Beliefs Model) have been published. The biopsychosocial multidimensional approach to chronic pain developed by Turk and Gatchel is a widely used model of chronic pain. However, this model has not been applied to chronic pain associated with SCD. In addition, a spiritual/religious dimension is not included in this model. Because spirituality/religion is central to persons affected by SCD, that dimension needs to be added to any model of chronic pain in adults with SCD. In fact, data from one study suggest that spirituality/religiosity is associated with decreased pain intensity in adults with chronic pain from SCD. A biopsychosocial-spiritual model is proposed for adults with chronic pain from SCD, because it embraces the whole person. This model includes the biologic, psychologic, sociologic, and spiritual factors relevant to adults with SCD based on past and current research. The purpose of this paper is to describe an adaptation of Turk and Gatchel's model of chronic pain for adults with SCD and to summarize research findings that support each component of the revised model (i.e., biologic, psychologic, sociologic, spiritual). The paper concludes with a discussion of implications for the use of this model in research.

Quench the thirst: lessons from clinical thirst trials

Thirst, as a symptom, has long been considered the most prevalent clinical complaint patients voice in healthcare settings. Yet, rarely have researchers examined thirst by its correlation with physiologic factors. This review was undertaken to examine the relationships between thirst ratings and factors mediating its primary physiologic correlates: plasma osmolality (pOsm) and arginine vasopressin peptide (AVP). A literature search was undertaken to identify clinical studies in human subjects that investigated the relationship of thirst to specific physiologic thirst-related correlates and associated thirst mediators. Thirst was induced in 17 selected clinical studies by hyperosmolar infusion, through water deprivation or exercise weight-loss regimens. Positive linear relationships between the subjects' thirst ratings and rising serum pOsm levels confirmed the presence of intact osmotic thirst drives. However, there were significant variations in normal compensatory rises in AVP levels that followed the rises in plasma osmolality after the subjects were exposed to cold, physical pre-conditioning and water immersion tests. Notably, older adults in the studies reported diminished thirst ratings. Weak correlations suggest that angiotensin II may play only a minor role in thirst mediation. Atrial natriuretic hormone's inhibitory effect on thirst was inconsistent. Findings indicated that older adults are at higher risk for profound dehydration due to sensory deficits along with failure to correct volume losses. The thirst trials results support the close correlation between serum pOsm values and patients' thirst ratings, with the exception of the older adult.

Enteral nutritional intake in adult korean intensive care patients

BACKGROUND

Nutritional support is important for maximizing clinical outcomes in critically ill patients, but enteral nutritional intake is often inadequate.

OBJECTIVE

To assess the nutritional intake of energy and protein during the first 4 days after initiation of enteral feeding and to examine the relationship between intake and interruptions of enteral feeding in Korean patients in intensive care.

METHODS

A cohort of 34 critically ill adults who had a primary medical diagnosis and received bolus enteral feeding were studied prospectively. Energy and protein requirements were determined by using the Harris-Benedict equation and the American Dietetic Association equation. Energy and protein intake prescribed and received and the reasons for and lengths of feeding interruptions were recorded for 4 consecutive days immediately after enteral feeding began.

RESULTS

Although the differences between requirements and intakes of energy and protein decreased significantly, patients did not receive required energy and protein intake during the 4 days of the study. Energy intake prescribed was consistently less than required on each of the 4 days. Enteral nutrition was withheld for a mean of 6 hours per patient for the 4 days. Prolonged feeding interruptions due to gastrointestinal intolerance (r= -0.874; P < .001) and procedures (r= -0.839; P = .005) were negatively associated with the percentage of prescribed energy received.

CONCLUSIONS

Enteral nutritional intake was insufficient in bolus-fed Korean intensive care patients because of prolonged feeding interruptions and underprescription of enteral nutrition. Feeding interruptions due to gastrointestinal intolerance and procedures were the main contributors to inadequate energy intake.

Knowledge and beliefs about smoking and goals for smoking cessation in hospitalized men with cardiovascular disease

OBJECTIVES

To describe perceptions of smoking in men hospitalized with cardiovascular disease (CVD).

BACKGROUND

Smoking is a major risk factor and associated with the high prevalence of CVD in Jordan.

METHODS

The study design was cross-sectional with a convenience sample. A structured interview was conducted in 112 men who were hospitalized with CVD.

RESULTS

The study showed that 91% of men hospitalized with CVD smoked daily. The majority (83%) had attempted to quit smoking in the past without help from others, and intended to quit in the future using the same previously unsuccessful method. They were unaware of the hazards of smoking such as stroke; or the long term health benefits of quitting smoking. Logistic regressions showed that men were more confident in quitting smoking if they had a high income (OR: 7.7; 95% CI: 2.7, 22.3), longer hospitalizations (OR: 2.6; 95% CI: 1.3, 5.3), or were hospitalized in acute cardiac settings (OR: 3.9; 95% CI: 1.2, 12.7), and admitted with a diagnosis of MI or angina (OR: 3.0; 95% CI: 1.1, 8.3).

CONCLUSION

Assessment of smoking status with smoking cessation counseling is paramount in hospitalized men with CVD who smoke.

Dyspnea coping strategies in Korean immigrants with asthma or chronic obstructive pulmonary disease

PURPOSE

Patients with lung disease develop coping strategies to relieve dyspnea. The coping strategies of Korean immigrants, however, are poorly understood. The purpose of this study was to describe the strategies that Korean immigrants with asthma or chronic obstructive pulmonary disease (COPD) use to cope with dyspnea and to compare similarities and differences in coping strategies between the two conditions.

DESIGN

Outpatients with asthma (n = 25) or COPD (n = 48) participated in a cross-sectional descriptive study.

METHOD

Open-ended questions and a structured instrument were used to describe coping strategies for dyspnea. Descriptive and inferential statistics were used to analyze the data.

RESULTS

The most prevalent strategy was "I keep still or rest." Korean immigrants also used traditional therapies to manage dyspnea.

CONCLUSIONS

Although the coping strategies of Korean immigrants were similar to those of other ethnic groups, they incorporated elements of Asian medical practice and herbs. This finding enables health care providers to better understand Korean immigrants' efforts to overcome dyspnea and to guide their patients' approach to coping.

A prospective window into medical device-related pressure ulcers in intensive care

The aim of this study was to determine the prevalence, severity, location, aetiology, treatment and healing of medical device-related pressure ulcers (PUs) in intensive care patients for up to 7 days. A prospective repeated measures study design was used. Patients in six intensive care units of two major medical centres, one each in Australia and the USA, were screened 1 day per month for 6 months. Those with device-related ulcers were followed daily for up to 7 days. The outcome measures were device-related ulcer prevalence, pain, infection, treatment and healing. Fifteen of 483 patients had device-related ulcers and 9 of 15 with 11 ulcers were followed beyond screening. Their mean age was 60·5 years, and most were men, overweight and at increased risk of PU. Endotracheal (ET) and nasogastric (NG) tubes were the cause of most device-related ulcers. Repositioning was the most frequent treatment. Four of 11 ulcers healed within the 7-day observation period. In conclusion, device-related ulcer prevalence was 3·1%, similar to that reported in the limited literature available, indicating an ongoing problem. Systematic assessment and repositioning of devices are the mainstays of care. We recommend continued prevalence determination and that nurses remain vigilant to prevent device-related ulcers, especially in patients with NG and ET tubes.

Adequacy of early enteral nutrition in adult patients in the intensive care unit

AIMS AND OBJECTIVES

To evaluate the adequacy of energy and protein intake of patients in a Korean intensive care unit in the first four days after initiation of enteral feeding and to investigate the factors that had impact on adequate intake.

BACKGROUND

Underfeeding is a common problem for patients hospitalised in the intensive care unit and is associated with severe negative consequences, including increased morbidity and mortality.

DESIGN

A prospective, cohort study was conducted in a medical intensive care unit of a university hospital in Korea.

METHODS

A total of 34 adult patients who had a primary medical diagnosis and who had received bolus enteral nutrition for the first four days after initiation of enteral nutrition were enrolled in this study. The data on prescription and intake of energy and protein, feeding method and feeding interruption were recorded during the first four days after enteral feeding initiation. Underfeeding was defined as the intake <90% of required energy and protein.

RESULTS

Most patients (62%) received insufficient energy, although some (29%) received adequate energy. More than half of patients (56%) had insufficient protein intake during the first four days after enteral feeding was initiated. Logistic regression analysis showed that the factors associated with underfeeding of energy were early initiation of enteral nutrition, under-prescription of energy and prolonged interruption of prescribed enteral nutrition.

CONCLUSION

Underfeeding is frequent in Korean critically ill patients owing to early initiation, under-prescription and prolonged interruption of enteral feeding.

RELEVANCE TO CLINICAL PRACTICE

  Interventions need to be developed and tested that address early initiation, under-prescription and prolonged interruption of enteral nutrition. Findings from this study are important as they form the foundation for the development of evidence-based care that is badly needed to eliminate underfeeding in this large vulnerable Korean intensive care unit population.

Symptoms and functional performance in Korean immigrants with asthma or chronic obstructive pulmonary disease

OBJECTIVES

People with chronic obstructive lung diseases often experience a variety of symptoms. Few studies, however, have described these symptoms in detail. This study sought to examine concurrent symptoms, symptom clusters, and the effects of symptoms on functioning in Korean immigrants with asthma or chronic obstructive pulmonary disease (COPD).

METHODS

Outpatients with asthma or COPD participated in this cross-sectional, correlational study. Symptoms, dyspnea, mood, and functional performance were assessed with questionnaires. Descriptive and inferential statistics were used to analyze the data.

RESULTS

The most frequently reported symptom was shortness of breath. Three factors emerged from 16 symptoms. Age, mean severity score of 7 symptoms, working status, level of acculturation, and level of education explained significant variance in functional performance.

CONCLUSION

The symptom cluster, consisting of 7 symptoms, showed the greatest effect on levels of functioning, which emphasizes the importance of assessment for coexisting symptoms in populations with these diseases.

Caregiving for patients with heart failure: impact on patients' families

BACKGROUND

Factors that affect the impact of caregiving on patients' family members who provide care to patients with heart failure have not been adequately addressed. In addition, social support and positive aspects of caregiving have received little attention.

OBJECTIVE

To identify factors associated with the impact of caregiving.

METHODS

Self-report data were collected from 76 dyads of patients with heart failure and their family caregivers. Clinical data were obtained from medical records.

RESULTS

A sense of less family support for caregiving was associated with a higher New York Heart Association class of heart failure, being a nonspousal caregiver, lower caregivers' perceived control, and less social support. More disruption of caregivers' schedules was associated with higher class of heart failure, more care tasks, and less social support. Greater impact of caregiving on caregivers' health was related to more recent patient hospitalization, lower caregivers' perceived control, and less social support. Nonwhite caregivers and caregivers whose family member had fewer emergency department visits felt more positive about caregiving than did other caregivers. Social support had a moderating effect on the relationship between patients' comorbid conditions and positive aspects of caregiving.

CONCLUSIONS

Caregiving has both positive and negative effects on family caregivers of patients with heart failure. The findings suggest the need for interventions to increase caregivers' sense of control and social support. Family caregivers may need additional support immediately after patient hospitalizations to minimize the negative impact of caregiving.

Hospital-acquired pressure ulcers in two Swedish County Councils: cross-sectional data as the foundation for future quality improvement

The objectives of the study were to examine the prevalence of pressure ulcers and hospital-acquired pressure ulcers (HAPU) and identify modifiable factors in patients who develop HAPU as the basis for subsequent quality assurance studies and improvement in hospital care. The study was conducted in five hospitals in two Swedish County Councils. A 1-day prevalence study (n = 1192) using the standards of the European Pressure Ulcer Advisory Panel and Collaborative Alliance for Nursing Outcomes was conducted. The prevalence of ulcers was 14·9% and 11·6% were HAPU. Older age, more days of hospitalisation, less activity, problems with shear and friction and reduced sensory perception contributed significantly to HAPU. Pressure ulcer prevention strategies used more often in those with HAPU were risk assessment at admission, provision of a pressure relief mattress, having a turning schedule and using a heel or chair cushion. The prevalence of pressure ulcers continues to be a significant issue in acute care and the prevalence of HAPU is high. There is significant room for quality improvement in pressure ulcer prevention in Swedish hospitals. Future research needs to address both HAPU and community-acquired pressure ulcers and focus on preventive strategies, including when they are initiated and which are effective in mitigating the high HAPU rate.

Barriers to diabetes management: patient and provider factors

Despite significant advances in diagnosis and treatment, the persistence of inadequate metabolic control continues. Poor glycemic control may be reflected by both the failure of diabetes self-management by patients as well as inadequate intervention strategies by clinicians. The purpose of this systematic review is to summarize existing knowledge regarding various barriers of diabetes management from the perspectives of both patients and clinicians. A search of PubMed, CINAHL, ERIC, and PsycINFO identified 1454 articles in English published between 1990 and 2009, addressing type 2 diabetes, patient's barriers, clinician's barriers, and self-management. Patients' adherence, attitude, beliefs, and knowledge about diabetes may affect diabetes self-management. Culture and language capabilities influence the patient's health beliefs, attitudes, health literacy, thereby affecting diabetes self-management. Other influential factors include the patient's financial resources, co-morbidities, and social support. Clinician's attitude, beliefs and knowledge about diabetes also influence diabetes management. Clinicians may further influence the patient's perception through effective communication skills and by having a well-integrated health care system. Identifying barriers to diabetes management is necessary to improve the quality of diabetes care, including the improvement of metabolic control, and diabetes self-management. Further research that considers these barriers is necessary for developing interventions for individuals with type 2 diabetes.

A review of the literature on the multiple dimensions of chronic pain in adults with sickle cell disease

Sickle cell disease (SCD) is a major health care and societal problem that affects millions of people worldwide. In Nigeria, 45,000 to 90,000 babies are born each year with SCD. In the United States, SCD is the most common genetic disorder, affecting more than 80,000 people, the majority of whom are African American. Sickle cell pain is the hallmark feature of SCD. Most of the research on pain from SCD has focused on children with acute pain associated with sickle cell crisis. Consequently, very little is known about the occurrence and characteristics of chronic pain, especially in adults with SCD. Individuals with SCD who experience chronic pain are often underserved, and their pain is undertreated. This undertreatment may result in millions of dollars per year spent on emergency room visits, hospitalizations, and lost work productivity. The primary purpose of this literature review was to summarize the findings from studies that evaluated the characteristics of chronic pain in adults with SCD. Each of the studies included in this review was evaluated to determine if it provided data on the following multidimensional characteristics of chronic pain: occurrence, number of pain episodes, duration, pattern, quality, location, intensity, aggravating factors, relieving factors, and impact of pain on function. A secondary purpose was to identify gaps in knowledge and directions for future research on the multiple dimensions of chronic pain in adults with SCD.

Factors associated with psychological insulin resistance in individuals with type 2 diabetes

OBJECTIVE

To describe the predictive relationships of selected sociodemographic, biomedical, and psychosocial variables to reluctance to use insulin among patients with type 2 diabetes.

RESEARCH DESIGN AND METHODS

A total of 178 patients with type 2 diabetes participated in this cross-sectional, observational study. Data were obtained by patient interview using validated measures of diabetes attitude, knowledge, self-efficacy, care communication, and perceived barriers to treatment, as well as sociodemographic and biomedical data.

RESULTS

Women and ethnic minorities with type 2 diabetes have more psychological barriers to insulin treatment (P < 0.05). The final regression model showed that individuals who believed in the value of tight glucose control, had strong self-efficacy, and had better interpersonal processes with their healthcare providers were less reluctant to use insulin treatment (R(2) = 0.403; P < 0.0001).

CONCLUSIONS

Diabetes self-efficacy and better interaction with clinicians were important in decreasing patients' reluctance to use insulin, known as psychological insulin resistance.

Gender differences in self-reported constipation characteristics, symptoms, and bowel and dietary habits among patients attending a specialty clinic for constipation

OBJECTIVES

This study assessed gender differences in the frequency of various characteristics of constipation, constipation-specific symptoms, and bowel and dietary habits, as well as the effects of independent but associated risk factors.

METHODS

A cross-sectional study of patients aged >or=18 years with a primary diagnosis of constipation (ie, constipation, slow-transit constipation, outlet dysfunction constipation) was conducted at a tertiary referral center; patients were excluded if they had a primary diagnosis of fecal incontinence. Patients completed both a clinical questionnaire to obtain information on demographic characteristics and medical history and an unvalidated self-report questionnaire relating to the characteristics and symptoms of constipation as well as various bowel and dietary habits. Likert scales were used to assess 4 characteristics of constipation (frequency of constipation, duration of constipation symptoms of >or=1 month, bowel movement frequency, stool consistency) and the frequency of occurrence of 6 constipation symptoms (abdominal pain, abdominal bloating, incomplete evacuation, unsuccessful attempts at evacuation, pain with evacuation, straining with evacuation). The bowel habits that were evaluated included time spent at each evacuation; frequency of needing to change position to evacuate; use of anal digitation to evacuate; and the use of laxatives, enemas, stool softeners, foods, drinks, or other aids. The dietary habits that were evaluated included use of dietary fiber, use of fiber supplements, and water intake.

RESULTS

Of the 518 patients, the majority were female (79.0%), white (76.3%), and employed (62.0%), with a mean (SD) age of 52.4 (16.5) years (range, 18.6-91.5 years). After controlling for a number of related conditions, women were more likely than men to have infrequent bowel movements (adjusted odds ratio [AOR] = 2.97; 95% CI, 1.67-5.28), abnormal stool consistency (ie, hard or pelletlike stools) (AOR = 3.08; 95% CI, 1.80-5.28), and a longer duration of constipation symptoms (AOR = 2.00; 95% CI, 1.05-3.82). In addition, women were more likely to report an increased frequency of occurrence of abdominal pain (AOR = 2.22; 95% CI, 1.22-4.05), bloating (AOR = 2.65; 95% CI, 1.50-4.70), unsuccessful attempts at evacuation (AOR = 1.74; 95% CI, 1.01-3.00), and the use of anal digitation to evacuate stool (AOR = 3.37; 95% CI, 1.15-9.90).

CONCLUSIONS

The women in this specialty-based clinic study experienced a number of constipation symptoms and abnormal bowel habits more frequently than did men. These findings warrant replication in both population- and specialty clinic-based samples. In addition, the physiologic mechanisms that underlie these gender differences warrant investigation.

A review of the literature on gender and age differences in the prevalence and characteristics of constipation in North America

Constipation is a common problem and affects between 2% and 28% of the general population. It is thought to affect more women than men. The severity of constipation is variable and it can be an acute or chronic condition. Often, it requires frequent interventions that may produce mixed or even unsatisfactory results. Knowledge of potentially gender- and age-related differences in constipation would be useful to clinicians to help them identify high-risk patients. In addition, researchers might use this information to design both descriptive and intervention studies. This article reviews the evidence from the studies on gender and age differences in prevalence of constipation, gender differences in the prevalence and characteristics of constipation, and age differences in the prevalence and characteristics of constipation. The available literature suggests that the prevalence of constipation is consistently higher in women than in men. However, evidence of gender differences in the characteristics of constipation is inconsistent. Prevalence rates appear to increase gradually after the age of 50 years, with the largest increase after the age of 70 years. The literature is both sparse and inconsistent in its description of age differences in the characteristics of constipation. This lack of research is a significant issue given the magnitude of this problem in the older adult population. Research is needed on gender and age differences in the symptoms of constipation, and how covariates impact the prevalence and severity of constipation in the elderly.

Pathophysiology of constipation in the older adult

This review provides information on the definition of constipation, normal continence and defecation and a description of the pathophysiologic mechanisms of constipation. In addition, changes in the anatomy and physiology of the lower gastrointestinal tract associated with aging that may contribute to constipation are described. MEDLINE (1966-2007) and CINAHL (1980-2007) were searched. The following MeSH terms were used: constipation/etiology OR constipation/physiology OR constipation/physiopathology) AND (age factors OR aged OR older OR 80 and over OR middle age). Constipation is not well defined in the literature. While self-reported constipation increases with age, findings from a limited number of clinical studies that utilized objective measures do not support this association. Dysmotility and pelvic floor dysfunction are important mechanisms associated with constipation. Changes in GI function associated with aging appear to be relatively subtle based on a limited amount of conflicting data. Additional research is warranted on the effects of aging on GI function, as well as on the timing of these changes.

Tracking quality over time: what do pressure ulcer data show?

OBJECTIVE

To compare the prevalence of pressure ulcers and prevention before and after a quality improvement program; determine whether patient characteristics differed for those who did and did not develop pressure ulcers; identify pressure ulcer prevention implemented at admission and whether prevention and risk factors varied by pressure ulcer severity.

DESIGN

Descriptive comparative study based on two cross-sectional pressure ulcer surveys conducted in 2002 and 2006, complemented with a retrospective audit of the electronic health record and administrative system for patients identified with pressure ulcers.

SETTING

1100-bed Swedish university hospital.

PARTICIPANTS

612 hospitalized patients in 2002 and 632 in 2006.

MAIN OUTCOME MEASURES

Prevalence of pressure ulcers and prevention (pressure-reducing mattresses; planned repositioning; chair, heel and 30 degrees lateral positioning cushions).

RESULTS

Pressure ulcer prevalence was 23.9% in 2002 and 22.9% in 2006. When non-blanchable erythema was excluded, the prevalence was 8.0 and 12.0%, respectively. The use of pressure-reducing mattresses increased while planned repositioning decreased. Those who developed ulcers were older, at-risk for ulcers, incontinent and had longer length of stay. Little prevention was documented at admission. Some prevention strategies and risk factors were related to severity of ulcers.

CONCLUSIONS

Pressure ulcer prevalence did not decrease, despite a comprehensive quality improvement program. Special attention is needed to provide prevention to older patients with acute admission. Skin and risk assessment, as well as prevention, should start early in the hospitalization. Identifying those persons with community-acquired versus hospital-acquired ulcers will strengthen pressure ulcers as an accurate marker of quality of care for hospitalized patients. If possible, data should be reported by ward level for comparison over time.

Review article: self-report measures to evaluate constipation

BACKGROUND

Constipation is a subjective phenomenon, and as such must be evaluated using patient self-report. Valid and reliable measures of constipation are essential to standardize the diagnosis, assess the severity and evaluate the effectiveness of treatments.

AIM

To compare and contrast published self-report measures of constipation in terms of development, content, general characteristics, psychometric properties and clinical utility.

METHODS

MEDLINE (1966-2007), CINAHL (1980-2007), Cochrane (1993-2007) and Web of Science (1995-2007) were searched to identify self-report measures of constipation. Measures of constipation were selected if they: (i) were self-report measures that measured only constipation; (ii) had undergone psychometric testing; (iii) were used in adults and (iv) were written in English.

RESULTS

Seven self-report measures of constipation were identified. The content areas evaluated by these measures varied. Only two measures had adequate validity and reliability, sensitivity to change, or were tested in more than one sample.

CONCLUSIONS

Findings from this review suggest that the Chinese Constipation Questionnaire and the Patient Assessment of Constipation-Symptom Questionnaire demonstrate adequate psychometric properties for a constipation measure. Additional research is warranted to refine or develop a more comprehensive self-report measure to evaluate constipation in adults.

Compliance with antihypertensive medication in Chinese immigrants: cultural specific issues and theoretical application

This paper presents a theoretical framework to study medication compliance in Chinese immigrants with hypertension (HTN). The framework was developed from (a) literature review of medication compliance and Chinese cultural belief/practices and (b) critique of major models of health behaviors in persons with chronic illness. Four constructs shape the model: motivation, cultural health perceptions, modifying factors, and cultural health care activities. Among these constructs, cultural health perceptions and health care activities are especially important because these address how Chinese immigrants perceive HTN and antihypertensive treatments and how they manage HTN. Using a culturally sensitive model is important to guide studies of medication compliance in this population and to assist health care providers to support compliance with antihypertensive treatments for Chinese immigrants.

Community-living elder's views on normal and low weight

OBJECTIVES

To investigate community-living older adult's understanding of normal and low weight.

DESIGN

Cross-sectional exploratory.

SETTING

Three counties in the Western United States.

PARTICIPANTS

Community-living older adults (n=130), aged 65 and older, with a body mass index (BMI) < 24 kg/m2.

MEASUREMENT

Interviews, using semi-structured questions, were analyzed using content analysis.

RESULTS

Only 22% (n=28) of the participants reported knowing the normal weight range for their age, and even fewer (2%, n=3) knew what a low weight was for their age. Most (n=125) reported receiving no information from their health care provider (HCP) on normal and low weight for their age.

CONCLUSION

The majority of the participants were unaware that they were at-risk for poor nutritional status and low weight; they reported receiving little information from their HCP on preventing weight loss. Since most community-living older adults do not know what normal or low weight is for their age, they would benefit from receiving this information from their HCP.

RATIONALE

Knowledge of older adults' views on normal and low weight may lead to early identification of weight problems and improve an older adult's nutritional status.

Beliefs about health, smoking, and future smoking cessation among South Korean men hospitalized for cardiovascular disease

BACKGROUND

A particularly high rate of smoking among South Korean men corresponds to high rates of cardiovascular disease.

OBJECTIVES

This study evaluated South Korean men hospitalized with cardiovascular disease to explore beliefs about the health benefits of smoking cessation, to determine smoking cessation intentions, and to identify factors associated with confidence in quitting smoking.

METHODS

This was a cross-sectional, descriptive study.

RESULTS

Of the study's 97 participants, only 78% believed that smoking cessation avoids or decreases the chance of developing heart disease; 93% reported their intention to quit; 74% had moderate to high confidence about quitting within the month after hospital discharge; and 88% preferred to quit by themselves without help. Significant predictors of low confidence in quitting were being married (odds ratio: 5.54, 95% confidence interval: 1.33-23.08); being alcohol dependent (odds ratio: 3.25, confidence interval: 1.20-8.80); and starting to smoke at or before 20 years of age (odds ratio: 2.96, confidence interval: 1.14-7.68).

CONCLUSION

The study's participants were motivated to quit smoking for their health, but they must be educated to understand that smoking is addictive and that special intervention is needed.

Hospital Recovery is Facilitated by Prevention of Pressure Ulcers in Older Adults

Pressure ulcers are areas of tissue damage caused by unrelieved pressure that results in ischemia. About 70% of pressure ulcers occur in adults who are older than 65 years of age; the most common sites are the sacrum and heels. The rate at which new ulcers develop in acute care settings varies from 0.4% to 38%, with a mean incidence of about 7%. Recovery in patients who have pressure ulcers is delayed, as demonstrated by an increased length of hospitalization and increased health care costs. This article addresses recovery in older adults who are at risk for the development of a pressure ulcer.

Risk for Low Weight in Community-Dwelling, Older Adults

PURPOSE

The purpose of this study was to describe nutritional risk and low weight in community-dwelling elderly.

METHOD

This cross-sectional exploratory study used in-depth interviews conducted on older adults with a body mass index <24 kg/m. Depression, mental state, nutrition, and demographic data were measured.

RESULTS

These elders (n = 130) were mostly female (55%, n = 71), married, white (84%, n = 109), and had a greater than a high school education. In a multivariate logistic regression analysis, 3 variables were statistically significantly associated with being severely underweight: those who self-reported having an illness or condition that changed the kind and/or amount of food eaten, unintentional weight loss of 10 lb in the last 6 months, and needing assistance with traveling outside the home.

CONCLUSION

Awareness of the high nutritional risk should prompt consideration of early, appropriate assessment and therapy to prevent malnutrition and a declining quality of life.

Skin Disease in HIV-Positive Persons Living in Puerto Rico

OBJECTIVES

To determine the frequency of skin disease in persons infected with the human immunodeficiency virus (HIV), to validate the agreement of self-reported skin condition(s) versus objective data obtained by physical examination, and to describe the characteristics of HIV-positive persons with skin disease in Puerto Rico.

DESIGN

Descriptive correlational design.

SETTING AND PARTICIPANTS

Ninety-five HIV-positive adults in San Juan, Puerto Rico. Ninety-five adults who were HIV-positive participated.

RESULTS

Ninety (94.7%) participants had skin disease and/or signs or symptoms suggestive of disease. Diseases most often reported were onychomycosis (n=16; 17.8%) and nongenital warts (n=11; 12.2%). Signs and symptoms reported were dryness (n=59; 65.6%), itch (n=58; 64.4%), erythema (n=30; 33.3%), induration (n=13; 14.4%), postinflammatory hyperpigmentation (n=9; 10.0%), and excoriation (n=9; 10.0%). Kappa index confirmed the relationship between self-reported skin condition or signs and symptoms and the diagnosis of a skin disease by the physician (k=.42). Positive predictive value was 97.7% (95% confidence interval [CI], 94.7%-100%). Condyloma acuminata was associated with male gender (chi2=4.09, P=.043). Tinea pedis (P=.0215), excoriations (P=.002), and prurigo nodularis (P=.0096) were associated with having a low CD4 cell count.

CONCLUSIONS

This study shows that persons infected with HIV can identify significant skin manifestations that are associated with the diagnosis of a skin disease. This validates the use of self-reporting of skin conditions in these patients and points to the importance of educating patients and providers to report patient skin problems. Although the high prevalence of skin disease found in this study population supports a need for improving dermatologic care in HIV-infected patients, the findings of such prevalent cutaneous disease can also provide caretakers with ample evidence to suspect and, therefore, test for HIV infection.

Improvement in balance, strength, and flexibility after 12 weeks of Tai chi exercise in ethnic Chinese adults with cardiovascular disease risk factors

CONTEXT

Declines in physical performance are associated with aging and chronic health conditions. Appropriate physical activity interventions can reverse functional limitations and help maintain independent living. Tai chi is a popular form of exercise in China among older adults.

OBJECTIVE

To determine whether tai chi improves balance, muscular strength and endurance, and flexibility over time.

DESIGN

Repeated measures intervention; data collected at baseline, 6 weeks, and 12 weeks.

SETTING

Community center in the San Francisco Bay Area.

PARTICIPANTS

Thirty-nine Chinese adults with at least 1 cardiovascular disease (CVD) risk factor.

INTERVENTIONS

A 60-minute tai chi exercise class 3 times per week for 12 weeks.

MAIN OUTCOME MEASURES

A battery of physical fitness measures specifically developed for older adults assessed balance, muscular strength and endurance, and flexibility.

RESULTS

Subjects were 65.7 (+/- 8.3) years old, Cantonese-speaking (97%) immigrants, with 12 years or less of formal education (87%) and very low income (67%). Reported CVD risk factors were hypertension (92%), hypercholesteremia (49%), diabetes (21%), and 1 current smoker. Subjects were below the 50th percentile of fitness at baseline compared to age- and gender-specific normative US data. Statistically significant improvements were observed in all balance, muscular strength and endurance, and flexibility measures after 6 weeks, and they increased further after 12 weeks.

CONCLUSIONS

Tai chi is a potent intervention that improved balance, upper- and lower-body muscular strength and endurance, and upper- and lower-body flexibility in these older Chinese adults. These findings provide important information for future community-based tai chi exercise programs and support current public health initiatives to reduce disability from chronic health conditions and enhance physical function in older adults.

Cultural Factors and Medication Compliance in Chinese Immigrants Who Are Taking Antihypertensive Medications: Instrument Development

Chinese immigrants in the United States have a moderate to high prevalence of hypertension, but little is known about antihypertensive medication compliance in Chinese immigrants. This study presents some first-generation measures of antihypertensive medication compliance in a sample of Chinese immigrants. A literature review and two qualitative pilot studies were conducted to generate culturally sensitive instruments. Items were developed to assess cultural factors and medication compliance in Chinese immigrants receiving antihypertensive medications. Cultural factors included measures of cultural health perception of hypertension, health perceptions of Chinese herbs, health perceptions of Western medications, beneficial self-care behaviors, and social support. Four medication compliance scales were developed. The applicability of these scales was tested in a Chinese immigrant population (n = 200). Cronbach’s alpha for the cultural factors scales ranged from .57 to .91. Two of the medication compliance scales had Cronbach’s alphas above .60. Results showed that most of the scales are applicable and acceptable in a Chinese immigrant population and had good reliability. However, further testing with a larger sample in other regions of the country is indicated.

Facilitating Positive Outcomes in Older Adults with Wounds

Older people with wounds are not the same as younger people with wounds. Older people experience biologic differences in wound healing that result in delayed healing, increased wound infection, and a greater incidence of dehiscence. Clinicians need to assess the risk of dehiscence in the older population, looking for serous drainage from the incision line and the absence of a palpable healing ridge. It is critical to recognize that older persons' presentation of wound infection is atypical. More subtle signs such as alteration in cognitive status and changes in function may indicate the presence of infection. The clinician who cares for older persons must be an exquisite detective when such changes occur to identify the source of the problem. As part of the normal trajectory of aging, older persons experience sensory loss and so may require accommodation when explanations are given to them about their wound and their wound care choices. Health care providers must consider hearing and vision changes that occur in older adults and tailor their explanations and teaching so that the message reaches the older adult and is successfully processed. Older persons have a higher incidence of cognitive changes and functional decline than do their younger counterparts, and these changes need to be assessed before a plan of care is developed to care for the older person with a wound. Limited data are available to help the clinician know the cognitive and functional level that is critical for older persons to understand their wound care choices, perform their own wound care, and to make choices about who will provide the care if they are unable to perform self-care. These seemingly basic issues raise questions for clinicians as we strive to provide evidence-based care to this ever-increasing population of older Americans.

Attitudes of Critically Ill Filipino Patients and Their Families Toward Advance Directives

• Background Advance directives are important but often underused tools in critical care. Healthcare professionals’ understanding of how culture influences attitudes toward advance directives can improve knowledge and completion of these documents.

• Objective To understand the attitudes of critically ill Filipino American patients and their families toward advance directives.

• Methods A descriptive, correlational, cross-sectional study with a convenience sample of 22 Filipino American patients and 22 Filipino American family members at a West Coast medical center. All patients were admitted for cardiac surgery or cardiac interventions. Participants were interviewed with the Advance Directive Attitude Survey and A Short Acculturation Scale for Filipino Americans.

• Results Family members’ scores were significantly more positive than patients’ scores on the attitude survey (P = .01). Family members were more American acculturated than were patients (P = .001). Family members with more education had more positive attitudes toward advance directives (P = .02). Only 2 patients (and no family members) had completed an advance directive before the study. Only 27.3% of family members had prior knowledge of advance directives.

• Conclusion Overall attitudes toward advance directives were positive; however, the completion rate and knowledge of advance directives were low. Participants may have been saying what they thought the researcher wanted to hear in order to avoid disagreement. Such behavior could partly explain the positive attitudes of the Filipino Americans toward advance directives. Further research is warranted to understand how to increase completion rates for advance directives among Filipino Americans.

Attitudes of critically ill Filipino patients and their families toward advance directives

BACKGROUND

Advance directives are important but often underused tools in critical care. Healthcare professionals' understanding of how culture influences attitudes toward advance directives can improve knowledge and completion of these documents.

OBJECTIVE

To understand the attitudes of critically ill Filipino American patients and their families toward advance directives.

METHODS

A descriptive, correlational, cross-sectional study with a convenience sample of 22 Filipino American patients and 22 Filipino American family members at a West Coast medical center. All patients were admitted for cardiac surgery or cardiac interventions. Participants were interviewed with the Advance Directive Attitude Survey and A Short Acculturation Scale for Filipino Americans.

RESULTS

Family members' scores were significantly more positive than patients' scores on the attitude survey (P = .01). Family members were more American acculturated than were patients (P = .001). Family members with more education had more positive attitudes toward advance directives (P = .02). Only 2 patients (and no family members) had completed an advance directive before the study. Only 27.3% of family members had prior knowledge of advance directives.

CONCLUSION

Overall attitudes toward advance directives were positive; however, the completion rate and knowledge of advance directives were low. Participants may have been saying what they thought the researcher wanted to hear in order to avoid disagreement. Such behavior could partly explain the positive attitudes of the Filipino Americans toward advance directives. Further research is warranted to understand how to increase completion rates for advance directives among Filipino Americans.

Wound care pain in hospitalized adult patients

BACKGROUND

Wound care (WC) is an important part of treatment for hospitalized patients with wounds. There is a paucity of data about the type or amount of pain patients experience during WC.

OBJECTIVES

The purpose of this study is to describe patients' (n = 412) WC-related pain perceptions and responses, examine the relationships between patients' WC pain and demographic variables, and describe the distress associated with WC.

METHODS

A repeated-measures design was used to examine pain before, during, and after WC in hospitalized patients (n = 412) with wounds healing by secondary intention.

RESULTS

Pain intensity was greatest during WC. It was most frequently described as tender, sharp, stinging, aching, and stabbing. Behaviors that occurred most often were no verbal response, no body movement, grimace, and complaints of pain. There were no differences in pain between genders. Nonwhites had significantly greater WC pain than whites. Pain during the procedure was the same in younger and older patients, and procedural distress was mild.

CONCLUSION

Patients experience pain and distress with WC. Some behaviors and words consistently describe WC pain. Further work is warranted to refine pain assessment and management in patients undergoing WC procedures.

The link between tissue oxygen and hydration in nursing home residents with pressure ulcers: preliminary data

Pressure ulcers are prevalent in nursing home residents. They heal slowly and result in pain and impaired quality of life. Strategies to enhance healing of pressure ulcers are critical to the treatment regime in nursing homes. This article explores the possibility that nursing home residents with pressure ulcers may experience low tissue oxygen and impaired hydration. Pilot data are presented suggesting that some proportion of nursing home residents with pressure ulcers experience low subcutaneous oxygen and that fluid administration increases the low tissue oxygen. Further research in this area is warranted.

Physiology and prevention of heel ulcers: The state of science

The prevalence of heel ulcers across settings is high and is increasing. Prevention of ulcers requires knowledge of their etiology and the scientific basis for preventive care. The interaction between external pressure and the heel vasculature is central to the prevention of heel ulcers. This article focuses on the prevention of heel pressure ulcers. The physiology of heel tissue perfusion, the effect of external pressure on heel perfusion, as well as what is known about strategies to reduce external pressure and approaches to improve heel skin blood flow will be discussed. It is only through understanding of the physiology of heel tissue perfusion and its relation to external pressure that effective preventive measures to reduce heel skin breakdown can be adapted in clinical practice.

Mechanisms for radiation-induced oral mucositis and the consequences

Radiation therapy remains the primary method of treatment for patients with head and neck cancer. The tissue destruction and functional alterations in the oral cavity lead to the development of oral mucositis. The purpose of this review is to describe the mechanisms, risk factors, prevalence, and magnitude of radiation therapy-related oral mucositis and its morbidities in patients with head and neck cancer. The review concludes with a discussion of the implications for clinical practice. This review provides cancer nurses with the information necessary to identify patients with head and neck cancer who are at high risk for oral mucositis and the significant comorbidities associated with this complication of radiation therapy.

Factors to Consider When Analyzing 12-Lead Electrocardiograms for Evidence of Acute Myocardial Ischemia

An important factor to consider when using findings on electrocardiograms for clinical decision making is that the waveforms are influenced by normal physiological and technical factors as well as by pathophysiological factors. Traditionally, the focus of bedside monitoring is detection of arrhythmia. However, continuous ST-segment monitoring for the detection of myocardial ischemia is now readily available. Many factors affect electrocardiographic waveforms and may interfere with diagnosis of myocardial ischemia based on electrocardiographic findings. Accordingly, a principal leadership role for clinical nurse specialists and nurse practitioners is to become knowledgeable about interpretation of 12-lead electrocardiograms and to share this knowledge with staff nurses who care for patients with acute coronary syndromes. The factors that alter electrocardiographic findings are reviewed, and the alterations that interfere with electrocardiogram-based diagnosis of myocardial ischemia are discussed.