Publications

Abstract

OBJECTIVE:: Recent changes in U.S. health care and economics may influence the demand for nurses and the work choices of newly licensed RNs (NLRNs). We sought to compare the work lives of two cohorts of NLRNs licensed six years apart. METHODS:: Data were collected from two groups of NLRNs in 14 states via mailed surveys. The first group consisted of a subset of NLRNs surveyed for a larger study in 2004-05; the second group was surveyed by similar methods in 2010-11. Responses were weighted to adjust for differences in response rates according to geographic area. RESULTS:: Response rates were 58% and 47%, respectively, for the 2004-05 cohort (N = 774) and the 2010-11 cohort (N = 1,613). The NLRNs in the later cohort were less likely to work in hospitals, special-care units, and direct care and more likely to work as managers, be enrolled in formal education programs, and view their work environments positively, resulting in more commitment to the organization. Also, those in the later cohort reported fewer local job opportunities, and a greater number held a second job CONCLUSIONS:: These findings indicate a shift from the traditional work patterns of NLRNs, who often began their careers in hospitals. Employers' heightened awareness of such changing trends among NLRNs may help them in planning for RN recruitment and retention.

Abstract

OBJECTIVE: To estimate how many additional chromosomal abnormalities can be detected by diagnostic testing compared with noninvasive prenatal testing in a high-risk prenatal population. METHODS: All karyotype results of invasive prenatal testing in singleton pregnancies performed in response to a positive prenatal screen through the California Prenatal Screening Program from April 2009 through December 2012 were examined. Abnormal karyotypes were categorized as to whether the abnormality is detectable by current noninvasive prenatal testing methods. RESULTS: Of 1,324,607 women who had traditional screening during the study period, 68,990 (5.2%) were screen-positive. Of screen-positive women, 26,059 (37.8%) underwent invasive diagnostic testing and 2,993 had an abnormal result (11.5%). Of these, 2,488 (83.1%) were predicted to be detectable with current noninvasive prenatal testing methods, and 506 (16.9%) were considered not currently detectable. Trisomy 21 accounted for 53.2% of the abnormal results (n51,592). Common aneuploidies, detectable by noninvasive prenatal testing, comprised a higher percentage of abnormal results in older women (P<.01). CONCLUSION: For pregnant women with a positive aneuploidy screen who pursued diagnostic testing, 16.9% of chromosome abnormalities are not currently detectable by noninvasive prenatal testing. Undetectable aneuploidies range from relatively mild to those associated with significant disability. This is important information to be considered by patients, health care providers, and screening programs in evaluating the use of traditional screening and invasive prenatal diagnosis compared with noninvasive prenatal testing.

Abstract

Conflict or aggression occurring between and among healthcare workers is undermining attempts to create a culture of safety in the workplace. Healthcare occupations have higher rates of workplace bullying (WPB), and intimidating behavior across healthcare settings has been shown to foster medical errors, increase the cost of care, and contribute to poor patient satisfaction and preventable adverse outcomes. WBP is also partially responsible for the high attrition among nurses, a particular concern in the current nursing shortage. Through a narrative that explores Florence Nightingale's professional persona and experience, this article outlines various factors that contribute to incivility and WPB, and provides suggestions for curriculum design that may help preempt incivility in tomorrow's nurses.

Abstract

Objective. To compare the incidence of hepatic decompensation in patients who are co-infected with HIV and hepatitis C (HCV) and who underwent antiretroviral treatment and patients who are HCV-monoinfected. Design. Retrospective cohort study. Participants and setting. This study used the Veterans Aging Cohort Study Virtual Cohort (VACS-VC), which includes electronic medical record data from patients who are HIV-infected and are receiving care at Veterans Affairs (VA) medical facilities in the United States. Inclusion criteria for patients who were co-infected were: detectable HCV RNA, recently initiated antiretroviral therapy (ART), defined as use of ≥ 3 antiretroviral drugs from 2 classes or ≥ 3 nucleoside analogues within the VA system, HIV RNA level > 500 copies/mL within 180 days before starting ART, and were seen in the VACS-VC for at least 12 months after initiating ART. Inclusion criteria for patients who were monoinfected with HCV were detectable HCV RNA, no HIV diagnosis or antiretroviral prescriptions, and seen in the VACS-VC for at least 12 months prior to inclusion into the study. Exclusion criteria were hepatic decompensation, hepatocellular carcinoma, and liver transplant during the 12-month baseline period or receipt of interferon-based HCV therapy. Main outcome measure. The primary outcome was incident hepatic decompensation, defined as diagnosis of ascites, spontaneous bacterial peritonitis, or esophageal variceal hemorrhage at hospital discharge or 2 such outpatient diagnoses.

Abstract

Objective The objective of the study was to determine whether pregnancies resulting in early preterm birth (PTB) (<30 weeks) were more likely than term pregnancies to have elevated midtrimester serum tumor necrosis factor alpha (TNF-α) levels combined with lipid patterns suggestive of hyperlipidemia. Study Design In 2 nested case-control samples drawn from California and Iowa cohorts, we examined the frequency of elevated midpregnancy serum TNF-α levels (in the fourth quartile [4Q]) and lipid patterns suggestive of hyperlipidemia (eg, total cholesterol, low-density-lipoproteins, or triglycerides in the 4Q, high-density lipoproteins in the first quartile) (considered independently and by co-occurrence) in pregnancies resulting in early PTB compared with those resulting in term birth (n = 108 in California and n = 734 in Iowa). Odds ratios (ORs) and 95% confidence intervals (CIs) estimated in logistic regression models were used for comparisons. Results Early preterm pregnancies were 2-4 times more likely than term pregnancies to have a TNF-α level in the 4Q co-occurring with indicators of hyperlipidemia (37.5% vs 13.9% in the California sample (adjusted OR, 4.0; 95% CI, 1.1-16.3) and 26.3% vs 14.9% in the Iowa sample (adjusted OR, 2.7; 95% CI, 1.1-6.3). No differences between early preterm and term pregnancies were observed when TNF-α or target lipid abnormalities occurred in isolation. Observed differences were not explicable to any maternal or infant characteristics. Conclusion Pregnancies resulting in early PTB were more likely than term pregnancies to have elevated midpregnancy TNF-α levels in combination with lipid patterns suggestive of hyperlipidemia.

Abstract

Objective: Evaluate a computerized intervention supporting antiretroviral therapy (ART) adherence and HIV transmission prevention. Design: Longitudinal randomized controlled trial. Settings: An academic HIV clinic and a community-based organization in Seattle. Subjects: In a total of 240 HIV-positive adults on ART, 209 completed 9-month follow-up (87% retention). Intervention: Randomization to computerized counseling or assessment only, 4 sessions over 9 months. Main Outcome Measures: HIV-1 viral suppression, and selfreported ART adherence and transmission risks, compared using generalized estimating equations. Results: Overall, intervention participants had reduced viral load: mean 0.17 log10 decline, versus 0.13 increase in controls, P = 0.053, and significant difference in ART adherence baseline to 9 months (P = 0.046). Their sexual transmission risk behaviors decreased (odds ratio = 0.55, P = 0.020), a reduction not seen among controls (odds ratio = 1.1, P = 0.664), and a significant difference in change (P = 0.040). Intervention effect was driven by those most in need; among those with detectable virus at baseline (<30 copies/mL, n = 89), intervention effect was mean 0.60 log10 viral load decline versus 0.15 increase in controls, P = 0.034. ART adherence at the final follow-up was 13 points higher among intervention participants versus controls, P = 0.038. Conclusions: Computerized counseling is promising for integrated ART adherence and safer sex, especially for individuals with problems in these areas. This is the first intervention to report improved ART adherence, viral suppression, and reduced secondary sexual transmission risk behavior.

Abstract

Cardiac pain and/or discomfort arising from acute coronary syndromes (ACS) can often be severe and anxiety-provoking. Cardiac pain, a symptom of impaired myocardial perfusion, if left untreated, may lead to further myocardial hypoxia, which can potentiate myocardial damage. Evidence suggests that once ACS patients are stabilized, their pain may not be adequately assessed. Lack of knowledge and problematic beliefs about pain may contribute to this problem. To date, no standardized tools are available to examine nurses' specific knowledge and beliefs about ACS pain that could inform future educational initiatives. To examine the content validity of the Toronto Pain Management Inventory-ACS Version (TPMI-ACS), a 24-item tool designed to assess nurses' knowledge and beliefs about ACS pain assessment and management. Eight clinical and scientific experts rated the relevance of each item using a four-point scale. A content validity index was computed for each item (I-CVI), as well as the total scale, expressed as the mean item CVI (S-CVI/AVE). Items with an I-CVI > or = 0.7 were retained, items with an I-CVI ranging from 0.5-0.7 were revised and clarified, and items with an I-CVI < or = 0.5 were discarded. I-CVIs ranged from 0.5-1.0 and the S-CVI/AVE was 0.90, reflecting high inter-rater agreement across items. The least relevant item was eliminated. Preliminary content validity was established on the TPMI-ACS version. All items retained in the TPMI-ACS version met requirements for content validity. Further evaluation of the psychometric properties of the TPMI-ACS is needed to establish criterion and construct validity, as well as reliability indicators.

Abstract

Oncology patients are at high risk for developing sleep disturbance and fatigue due a number of physiological and psychological factors associated with cancer, its treatment, and the burden of living with a chronic condition. Progress in our understanding of sleep disturbance and fatigue in oncology patients has been stymied by varying definitions for each symptom, as well as different instruments to measure each symptom. In addition, the co-occurrence of these and other common symptoms suggests that analytic methodologies that are currently available should be considered to model the relationships between these and among other common symptoms. The purpose of the chapter is to describe the prevalence, risk factors, measurement considerations, proposed mechanisms for and novel approaches to the study of these two common symptoms in oncology patients. Interventions to improve sleep and reduce fatigue are also described.

Abstract

Objective: To explore clinician perspectives on whether they experience difficulty resolving patient-related concerns or observe problems with the performance or behavior of colleagues involved in intrapartum care. Design: Qualitative descriptive study of physician, nursing, and midwifery professional association members. Participants and Setting: Participants (N = 1932) were drawn from the membership lists of the Association of Women's Health, Obstetric, and Neonatal Nurses (AWHONN), American College of Obstetricians and Gynecologists (ACOG), American College of Nurse Midwives (ACNM), and Society for Maternal-Fetal Medicine (SMFM). Methods: Email survey with multiple choice and free text responses. Descriptive statistics and inductive thematic analysis were used to characterize the data. Results: Forty-seven percent of participants reported experiencing situations in which patients were put at risk due to failure of team members to listen or respond to a concern. Thirty-seven percent reported unresolved concerns regarding another clinician's performance. The overarching theme was clinical disconnection, which included disconnections between clinicians about patient needs and plans of care and disconnections between clinicians and administration about the support required to provide safe and appropriate clinical care. Lack of responsiveness to concerns by colleagues and administration contributed to resignation and defeatism among participants who had experienced such situations. Conclusion: Despite encouraging progress in developing cultures of safety in individual centers and systems, significant work is needed to improve collaboration and reverse historic normalization of both systemic disrespect and overt disruptive behaviors in intrapartum care.

Abstract

Background: Lymphedema (LE) is a frequent complication following breast cancer treatment. While progress is being made in the identification of phenotypic risk factors for the development of LE, little information is available on the molecular characterization of LE. The purpose of this study was to determine if variations in pro-and anti-inflammatory cytokine genes were associated with LE following breast cancer treatment. Methods and Results: Breast cancer patients completed a number of self-report questionnaires. LE was evaluated using bioimpedance spectroscopy. Genotyping was done using a custom genotyping array. No differences were found between patients with (n=155) and without LE (n=387) for the majority of the demographic and clinical characteristics. Patients with LE had a significantly higher body mass index, more advanced disease, and a higher number of lymph nodes removed. Genetic associations were identified for three genes (i.e., interleukin (IL4) 4 (rs2227284), IL 10 (rs1518111), and nuclear kappa factor beta 2 (NFKB2 (rs1056890)) associated with inflammatory responses. Conclusions: These genetic associations suggest a role for a number of pro-and anti-inflammatory genes in the development of LE following breast cancer treatment.

Abstract

Purpose: This study explored the relationships between variations in cytokines genes and depressive symptoms in a sample of patients who were assessed prior to and for six months following breast cancer surgery. Phenotypic differences between Resilient (n = 155) and Subsyndromal (n = 180) depressive symptom classes, as well as variations in cytokine genes were evaluated. Method: Patients were recruited prior to surgery and followed for six months. Growth mixture modeling was used to identify distinct latent classes based on Center for Epidemiological Studies Depression (CES-D) Scale scores. Eighty-two single nucleotide polymorphisms and 35 haplotypes among 15 candidate cytokine genes were evaluated. Results: Patients in the Subsyndromal class were significantly younger, more likely to be married or partnered, and reported a significantly lower functional status. Variation in three cytokine genes (i.e., interferon gamma receptor 1 (IFNGR1 rs9376268), interleukin 6 (IL6 rs2069840), tumor necrosis factor alpha (TNFA rs1799964)), as well as age and functional status predicted membership in the Subsyndromal versus the Resilient class. Conclusions: A variation in TNFA that was associated with Subsyndromal depressive symptoms in a sample of patients and their family caregivers was confirmed in this sample. Variations in cytokine genes may place these patients at higher risk for the development of Subsyndromal levels of depressive symptoms.

Abstract

Fatigue has been associated with inflammation and cytokine activity among adults, but this relationship has not been evaluated among adults living with HIV. Diurnal patterns of fatigue have been previously identified in adults with HIV/AIDS. Thus, the purpose of this study was to describe these fatigue patterns in relation to cytokine plasma concentrations and gene polymorphisms. A convenience sample of 317 adults living with HIV/AIDS completed a measure of fatigue in the morning and evening for three consecutive days; participants reporting low levels of both morning and evening fatigue (n= 110) or high levels of fatigue in the morning and evening (n= 114) were included in the analysis, resulting in a final sample of 224 adults (151 men, 55 women, and 18 transgender). Plasma cytokines were analyzed, and genotyping was conducted for 15 candidate genes involved in cytokine signaling: interferon-gamma (IFNG), IFNG receptor 1 (IFNGR1), interleukins (IL), nuclear factor of kappa light polypeptide gene enhancer in B cells (NFKB-1 and -2), and tumor necrosis factor alpha (TNFA). Demographic and clinical variables were evaluated as potential covariates. Controlling for genomic estimates of ancestry and self-reported race/ethnicity and gender, the high fatigue pattern was associated with five single nucleotide polymorphisms (SNPs): IL1B rs1071676 and rs1143627, IL4 rs2243274, and TNFA rs1800683 and rs1041981. The IL1B and TNFA polymorphisms were not associated with plasma levels of IL-1β or TNFα, respectively. This study strengthens the evidence for an association between inflammation and fatigue. In this chronic illness population, the cytokine polymorphisms associated with high levels of morning and evening fatigue provide direction for future personalized medicine intervention research.

Abstract

Study Objectives: Cytokine activity and polymorphisms have been associated with sleep outcomes in prior animal and human research. The purpose of this study was to determine whether circulating plasma cytokines and cytokine polymorphisms are associated with the poor sleep maintenance commonly experienced by adults living with human immunodeficiency virus/acquired immunodeficiency syndrome (HIV/AIDS). Design: Cross-sectional descriptive study. Setting: HIV clinics and community sites in the San Francisco Bay area. Participants: A convenience sample of 289 adults (193 men, 73 women, and 23 transgender) living with HIV/AIDS. Interventions: None. Measurements and Results: A wrist actigraph was worn for 72 h to estimate the percentage of wake after sleep onset (WASO%) and total sleep time (TST), plasma cytokines were analyzed, and genotyping was conducted for 15 candidate genes involved in cytokine signaling: interferongamma (IFNG), IFNG receptor 1 (IFNGR1), interleukins (IL1B, IL1R2, IL1R2, IL2, IL4, IL6, IL8, IL10, IL13, IL17A), nuclear factor of kappa light polypeptide gene enhancer in B cells (NFKB1 and NFKB2), and tumor necrosis factor-alpha (TNFA). Controlling for demographic variables such as race and sex, and clinical variables such as CD4+ count and medications, higher WASO% was associated with single nucleotide polymorphisms (SNPs) of IL1R2 rs11674595 and TNFA rs1041981 and less WASO% was associated with IL2 rs2069776. IL1R2 rs11674595 and TNFA rs1041981 were also associated with short sleep duration. Conclusions: This study strengthens the evidence for an association between inflammation and sleep maintenance problems. In this chronic illness population, cytokine polymorphisms associated with wake after sleep onset provide direction for intervention research aimed at comparing anti-inflammatory mechanisms with hypnotic agents for improving sleep maintenance and total sleep time.

Abstract

Varied diets are diverse with respect to diet quality, and existing dietary variety indices do not capture this heterogeneity. We developed and evaluated the multidimensional US Healthy Food Diversity (HFD) index, which measures dietary variety, dietary quality and proportionality according to the 2010 Dietary Guidelines for Americans (DGA). In the present study, two 24 h dietary recalls from the 2003-6 National Health and Nutrition Examination Survey (NHANES) were used to estimate the intake of twenty-six food groups and health weights for each food group were informed by the 2010 DGA. The US HFD index can range between 0 (poor) and 1 - 1/n, where n is the number of foods; the score is maximised by consuming a variety of foods in proportions recommended by the 2010 DGA. Energy-adjusted Pearson's correlations were computed between the US HFD index and each food group and the probability of adequacy for fifteen nutrients. Linear regression was run to test whether the index differentiated between subpopulations with differences in dietary quality commonly reported in the literature. The observed mean index score was 0·36, indicating that participants did not consume a variety of healthful foods. The index positively correlated with nutrient-dense foods including whole grains, fruits, orange vegetables and low-fat dairy (r 0·12 to 0·64) and negatively correlated with added sugars and lean meats (r - 0·14 to - 0·23). The index also positively correlated with the mean probability of nutrient adequacy (r 0·41; P< 0·0001) and identified non-smokers, women and older adults as subpopulations with better dietary qualities. The US HFD index may be used to inform national dietary guidance and investigate whether healthful dietary variety promotes weight control.

Abstract

Context The relatively low number of older patients in cancer trials limits knowledge of how older adults experience symptoms associated with cancer and its treatment. Objectives This study evaluated for differences in the symptom experience across four older age groups (60-64, 65-69, 70-74, 75 years). Methods Demographic, clinical, and symptom data from 330 patients aged >60 years who participated in one Australian and two U.S. studies were evaluated. The Memorial Symptom Assessment Scale was used to evaluate the occurrence, severity, frequency, and distress of 32 symptoms commonly associated with cancer and its treatment. Results On average, regardless of the age group, patients reported 10 concurrent symptoms. The most prevalent symptoms were physical in nature. Worrying was the most common psychological symptom. For 28 (87.5%) of the 32 Memorial Symptom Assessment Scale symptoms, no age-related differences were found in symptom occurrence rates. For symptom severity ratings, an age-related trend was found for difficulty swallowing. As age increased, severity of difficulty swallowing decreased. For symptom frequency, age-related trends were found for feeling irritable and diarrhea, with both decreasing in frequency as age increased. For symptom distress, age-related trends were found for lack of energy, shortness of breath, feeling bloated, and difficulty swallowing. As age increased, these symptoms received lower average distress ratings. Conclusion Additional research is warranted to examine how age differences in symptom experience are influenced by treatment differences, aging-related changes in biological or psychological processes, or age-related response shift.

Abstract

BACKGROUND A large amount of interindividual variability exists in the occurrence of symptoms in patients receiving chemotherapy (CTX). The purposes of the current study, which was performed in a sample of 582 oncology outpatients who were receiving CTX, were to identify subgroups of patients based on their distinct experiences with 25 commonly occurring symptoms and to identify demographic and clinical characteristics associated with subgroup membership. In addition, differences in quality of life outcomes were evaluated. METHODS Oncology outpatients with breast, gastrointestinal, gynecological, or lung cancer completed the Memorial Symptom Assessment Scale before their next cycle of CTX. Latent class analysis was used to identify subgroups of patients with distinct symptom experiences. RESULTS Three distinct subgroups of patients were identified (ie, 36.1% in Low class; 50.0% in Moderate class, and 13.9% in All High class). Patients in the All High class were significantly younger and more likely to be female and nonwhite, and had lower levels of social support, lower socioeconomic status, poorer functional status, and a higher level of comorbidity. CONCLUSIONS Findings from the current study support the clinical observation that some oncology patients experience a differentially higher symptom burden during CTX. These high-risk patients experience significant decrements in quality of life.

Abstract

Objective This study aims to evaluate the relationship between early-onset severe preeclampsia and first trimester serum levels of pregnancy-associated plasma protein A (PAPP-A) and total human chorionic gonadotropin (hCG). Study Design The association between early-onset severe preeclampsia and abnormal levels of first trimester PAPP-A and total hCG in maternal serum were measured in a sample of singleton pregnancies without chromosomal defects that had integrated prenatal serum screening in 2009 and 2010 (n = 129,488). Logistic binomial regression was used to estimate the relative risk (RR) of early-onset severe preeclampsia in pregnancies with abnormal levels of first trimester PAPP-A or total hCG as compared with controls. Results Regardless of parity, women with low first trimester PAPP-A or high total hCG were at increased risk for early-onset severe preeclampsia. Women with low PAPP-A (multiple of the median [MoM] ≤ the 10th percentile in nulliparous or ≤ the 5th percentile in multiparous) or high total hCG (MoM ≥ the 90th percentile in nulliparous or ≥ the 95th percentile in multiparous) were at more than a threefold increased risk for early-onset severe preeclampsia (RR, 4.2; 95% confidence interval [CI], 3.0-5.9 and RR, 3.3; 95% CI, 2.1-5.2, respectively). Conclusion Routinely collected first trimester measurements of PAPP-A and total hCG provide unique risk information for early-onset severe preeclampsia.