Outcomes of community acquired pneumonia using the Pneumonia Severity Indexversusthe CURB-65 in routine practice of emergency departments

Background

The Pneumonia Severity Index (PSI) and the CURB-65 score assess disease severity in patients with community acquired pneumonia (CAP). We compared the clinical performance of both prognostic scores according to clinical outcomes and admission rates.

Methods

A nationwide retrospective cohort study was conducted using claims data from adult CAP patients presenting to the emergency department (ED) in 2018 and 2019. Dutch hospitals were divided into three categories: “CURB-65 hospitals” (n=25), “PSI hospitals” (n=19) and hospitals using both (“no-consensus hospitals”, n=15). Main outcomes were hospital admission rates, intensive care unit admissions, length of hospital stay, delayed admissions, readmissions and all-cause 30-day mortality. Multilevel logistic and Poisson regression analysis were used to adjust for potential confounders.

Findings

Of 50.984 included CAP patients, 21.157 were treated in CURB-65 hospitals, 17.279 in PSI hospitals and 12.548 in no-consensus hospitals. The 30-day mortality was significantly lower in CURB-65 hospitalsversusPSI hospitals (8·6% and 9·7%, adjusted odds ratio (aOR) 0·89, 95% CI: 0·83–0·96, p=0·003). Other clinical outcomes were similar between CURB-65 hospitals and PSI hospitals. No-consensus hospitals had higher admission rates compared to the CURB-65 and PSI hospitals combined (78·4% and 81·5%, aOR 0·78, 95% CI: 0·62–0·99).

Interpretation

In this study, using the CURB-65 in CAP patients at the ED is associated with similar and possibly even better clinical outcomes compared to using the PSI. After confirmation in prospective studies, the CURB-65 may be recommended over the use of the PSI since it is associated with lower 30-day mortality and more user-friendly.

2181. Outcomes of Patients with Community Acquired Pneumonia Using the Pneumonia Severity Index Versus the CURB-65 as Severity Assessment Tool in Routine Practice of Emergency Departments

Background

The Pneumonia Severity Index (PSI) and the Confusion, Urea nitrogen, Respiratory rate, Blood pressure, 65 years of age and older (CURB-65) score can assess the severity in patients with community acquired pneumonia (CAP). We compared the clinical performance of both prognostic scores according to clinical outcome and admission rates.

Methods

A nationwide observational cohort study was conducted using claims data from adult patients presenting to the emergency department (ED) with CAP in 2018 and 2019. Dutch hospitals were divided into three categories: ‘CURB-65 hospitals’ (n=25), ‘PSI hospitals’ (n=19) and hospitals using both (‘no-consensus hospitals’, n=15). Main outcomes were number of hospital admissions, intensive care unit (ICU) admissions, length of hospital stay, and all-cause 30-day mortality. Multilevel logistic and Poisson regression analysis were used to adjust for potential confounders, including age, gender, comorbidities, medical specialism, and type of hospital.

Results

Of the 51.241 included patients with CAP at the ED, 21.233 were treated in CURB-65 hospitals, 17.389 in PSI hospitals and 12.619 in no-consensus hospitals. The 30-day mortality rate was 8·6% in CURB-65 hospitals versus 9·7% in PSI hospitals. Adjusted odds ratios (aORs) for 30-day mortality were lower in CURB-65 hospitals than in PSI hospitals (aOR 0·88, 95% confidence interval (CI): 0·82-0·95, p = 0·002). The admission rates in CURB-65 and PSI hospitals were similar (77·2% and 79·9%, aOR 0·81, 95% CI:

0·64-1·02). No-consensus hospitals had slightly higher admission rates on average compared to the CURB-65 and PSI hospitals combined (78·4% and 81·5%, aOR 0·79, 95% CI: 0·62-1·0).

Conclusion

The routine use of CURB-65 for risk assessment in CAP patients presenting to the ED in the Netherlands is associated with lower 30-day mortality. After further confirmation, the CURB-65 may be recommended over the use of the PSI.

Disclosures

W. Joost Wiersinga, PhD, AstraZeneca: Honoraria|GSK (DSMB): Honoraria|Pfizer: Honoraria|Sobi: Honoraria.

Can the Use of Health Insurance Claim Data Benefit the Risk-Based Supervision of General Practitioner Practices? An Exploratory Study in the Netherlands

BACKGROUND

The Dutch Health and Youth Care Inspectorate has organized a study investigating whether there are benefits to using claim data in the risk-based supervision of general practitioner (GP) practices.

METHODS

We identified and selected signals of risks based on interviews with experts. Next, we selected 3 indicators that could be measured in the claim database. These were: the expected and actual costs of the GP practice; the percentage of reserve antibiotics prescribed; and the percentage of patients undergoing an emergency admission during the weekend. We corrected the scores of the GP practices based on their casemix and identified practices with the most unfavorable scores, 'red flags,' in 2015, or the trend between 2013-2015. Finally, we analysed the data of GP practices already identified as delivering substandard care by the Health and Youth Care Inspectorate and calculated the sensitivity and specificity of using the indicators to identify poor performing GP practices.

RESULTS

By combining the 3 indicators, we identified 1 GP practice with 3 red flags and 24 GP practices with 2 red flags. The a priori chance of identifying a GP practice that shows substandard care is 0.3%. Using the indicators, this improved to 1.0%. The sensitivity was 26.7%, the specificity was 92.8%.

CONCLUSION

The Dutch Health and Youth Care Inspectorate might use claim data to calculate indicators on costs, the prescribing of reserve antibiotics and emergency admissions during the weekend, when setting priorities for its visits to GP practices. Visiting more GP practices by the Health and Youth Care Inspectorate, and identifying substandard care, is necessary to validate the use of these indicators.

Communicating personalised statin therapy-effects as 10-year CVD-risk or CVD-free life-expectancy: does it improve decisional conflict? Three-armed, blinded, randomised controlled trial

OBJECTIVE

To determine whether communicating personalised statin therapy-effects obtained by prognostic algorithm leads to lower decisional conflict associated with statin use in patients with stable cardiovascular disease (CVD) compared with standard (non-personalised) therapy-effects.

DESIGN

Hypothesis-blinded, three-armed randomised controlled trial SETTING AND PARTICIPANTS: 303 statin users with stable CVD enrolled in a cohort INTERVENTION: Participants were randomised in a 1:1:1 ratio to standard practice (control-group) or one of two intervention arms. Intervention arms received standard practice plus (1) a personalised health profile, (2) educational videos and (3) a structured telephone consultation. Intervention arms received personalised estimates of prognostic changes associated with both discontinuation of current statin and intensification to the most potent statin type and dose (ie, atorvastatin 80 mg). Intervention arms differed in how these changes were expressed: either change in individual 10-year absolute CVD risk (iAR-group) or CVD-free life-expectancy (iLE-group) calculated with the SMART-REACH model (http://U-Prevent.com).

OUTCOME

Primary outcome was patient decisional conflict score (DCS) after 1 month. The score varies from 0 (no conflict) to 100 (high conflict). Secondary outcomes were collected at 1 or 6 months: DCS, quality of life, illness perception, patient activation, patient perception of statin efficacy and shared decision-making, self-reported statin adherence, understanding of statin-therapy, post-randomisation low-density lipoprotein cholesterol level and physician opinion of the intervention. Outcomes are reported as median (25th- 75th percentile).

RESULTS

Decisional conflict differed between the intervention arms: median control 27 (20-43), iAR-group 22 (11-30; p-value vs control 0.001) and iLE-group 25 (10-31; p-value vs control 0.021). No differences in secondary outcomes were observed.

CONCLUSION

In patients with clinically manifest CVD, providing personalised estimations of treatment-effects resulted in a small but significant decrease in decisional conflict after 1 month. The results support the use of personalised predictions for supporting decision-making.

TRIAL REGISTRATION

NTR6227/NL6080.

Towards a patient journey perspective on causes of unplanned readmissions using a classification framework: results of a systematic review with narrative synthesis

Background

Several literature reviews have been published focusing on the prevalence and/or preventability of hospital readmissions. To our knowledge, none focused on the different causes which have been used to evaluate the preventability of readmissions. Insight into the range of causes is crucial to understand the complex nature of readmissions.

With this review we aim to: 1) evaluate the range of causes of unplanned readmissions in a patient journey, and 2) present a cause classification framework that can support future readmission studies.

Methods

A literature search was conducted in PUBMED and EMBASE using “readmission” and “avoidability” or “preventability” as key terms. Studies that specified causes of unplanned readmissions were included. The causes were classified into eight preliminary root causes: Technical, Organization (integrated care), Organization (hospital department level), Human (care provider), Human (informal caregiver), Patient (self-management), Patient (disease), and Other. The root causes were based on expert opinions and the root cause analysis tool of PRISMA (Prevention and Recovery Information System for Monitoring and Analysis). The range of different causes were analyzed using Microsoft Excel.

Results

Forty-five studies that reported 381 causes of readmissions were included. All studies reported causes related to organization of care at the hospital department level. These causes were often reported as preventable. Twenty-two studies included causes related to patient’s self-management and 19 studies reported causes related to patient’s disease. Studies differed in which causes were seen as preventable or unpreventable. None reported causes related to technical failures and causes due to integrated care issues were reported in 18 studies.

Conclusions

This review showed that causes for readmissions were mainly evaluated from a hospital perspective. However, causes beyond the scope of the hospital can also play a major role in unplanned readmissions. Opinions regarding preventability seem to depend on contextual factors of the readmission. This study presents a cause classification framework that could help future readmission studies to gain insight into a broad range of causes for readmissions in a patient journey.

In conclusion, we aimed to: 1) evaluate the range of causes for unplanned readmissions, and 2) present a cause classification framework for causes related to readmissions.

Electronic supplementary material

The online version of this article (10.1186/s12874-019-0822-9) contains supplementary material, which is available to authorized users.

How do studies assess the preventability of readmissions? A systematic review with narrative synthesis

Background

A large number of articles examined the preventability rate of readmissions, but comparison and interpretability of these preventability rates is complicated due to the large heterogeneity of methods that were used.

To compare (the implications of) the different methods used to assess the preventability of readmissions by means of medical record review.

Methods

A literature search was conducted in PUBMED and EMBASE using “readmission” and “avoidability” or “preventability” as key terms. A consensus-based narrative data synthesis was performed to compare and discuss the different methods.

Results

Abstracts of 2504 unique citations were screened resulting in 48 full text articles which were included in the final analysis. Synthesis led to the identification of a set of important variables on which the studies differed considerably (type of readmissions, sources of information, definition of preventability, cause classification and reviewer process). In 69% of the studies the cause classification and preventability assessment were integrated; meaning specific causes were predefined as preventable or not preventable. The reviewers were most often medical specialist (67%), and 27% of the studies added interview as a source of information.

Conclusion

A consensus-based standardised approach to assess preventability of readmission is warranted to reduce the unwanted bias in preventability rates. Patient-related and integrated care related factors are potentially underreported in readmission studies.

Electronic supplementary material

The online version of this article (10.1186/s12874-019-0766-0) contains supplementary material, which is available to authorized users.

How Health Care Professionals Evaluate a Digital Intervention to Improve Medication Adherence: Qualitative Exploratory Study

Background

Medication nonadherence poses a serious and a hard-to-tackle problem for many chronic diseases. Electronic health (eHealth) apps that foster patient engagement and shared decision making (SDM) may be a novel approach to improve medication adherence.

Objective

The aim of this study was to investigate the perspective of health care professionals regarding a newly developed digital app aimed to improve medication adherence. Familial hypercholesterolemia (FH) was chosen as a case example.

Methods

A Web-based prototype of the eHealth app—MIK—was codesigned with patients and health care professionals. After user tests with patients, we performed semistructured interviews and user tests with 12 physicians from 6 different hospitals to examine how the functionalities offered by MIK could assist physicians in their consultation and how they could be integrated into daily clinical practice. Qualitative thematic analysis was used to identify themes that covered the physicians’ evaluations.

Results

On the basis of the interview data, 3 themes were identified, which were (1) perceived impact on patient-physician collaboration; (2) perceived impact on the patient’s understanding and self-management regarding medication adherence; and (3) perceived impact on clinical decisions and workflow.

Conclusions

The eHealth app MIK seems to have the potential to improve the consultation between the patient and the physician in terms of collaboration and patient engagement. The impact of eHealth apps based on the concept of SDM for improving medication-taking behavior and clinical outcomes is yet to be evaluated. Insights will be useful for further development of eHealth apps aimed at improving self-management by means of patient engagement and SDM.

Improving care for older patients in the acute setting: a qualitative study with healthcare providers

BACKGROUND

The proportion of older people needing acute care is rapidly growing, thereby posing an increased burden on the acute care chain. The aim of this study is to gain more insight into the obstacles and potential improvement opportunities of the acute care process for older patients arriving at the hospital.

METHODS

Semi-structured interviews were conducted to determine the experiences of 18 different primary (i.e. general practitioner, community nurse) and secondary healthcare professionals (i.e. emergency department (ED) nurse, ED physician, geriatric physician, geriatric nurse, ambulance nurse, acute medical unit nurse), and three experts (2 researchers, 1 older adult advisor).

RESULTS

Four core themes emerged from the interviews: 1) The concept of frailty, awareness concerning frail older patients, and identification of frailty, 2) Barriers in the care process of older patients within the acute care chain, 3) Optimising the discharge process of older patients, and 4) Improvement opportunities suggested by the respondents. Early identification of frailty, improving the continuity of care by means of structured information exchange between care providers in the acute care chain, and a more generalist approach were considered important by the respondents in order to deliver appropriate care to older patients.

CONCLUSION

This explorative study identified several barriers and improvement opportunities which are important to improve the quality, efficacy and appropriateness of the acute care of older patients. More seems needed in the future in order to share experiences, expertise and develop potential improvement strategies for the acute care of older patients.

Design and reliability of a specific instrument to evaluate patient safety for patients with acute myocardial infarction treated in a predefined care track: a retrospective patient record review study in a single tertiary hospital in the Netherlands

OBJECTIVE

Numerous studies have shown that a substantial number of patients suffer from adverse events (AEs) as a result of hospital care. However, specific data on AEs in acute cardiac care are scarce. The current manuscript describes the development and validation of a specific instrument to evaluate patient safety of a predefined care track for patients with acute myocardial infarction (AMI).

DESIGN

Retrospective patient record review study.

SETTING AND PARTICIPANTS

A total of 879 hospital admissions treated in a tertiary care centre for an AMI (age 64±12 years, 71% male).

MAIN OUTCOME MEASURE

In the first phase, the medical records of patients with AMI warranting coronary angiography or coronary intervention were analysed for process deviations. In the second phase, the medical records of these patients were checked for any harm that had occurred which was caused by the healthcare provider or the healthcare organisation (AE) and whether the harm that occurred was preventable.

RESULTS

Of all 879 patients included in the analysis, 40% (n=354) had 1 or more process deviation. Of these 354 patients, 116 (33%) had an AE. Patients with AE experienced more process deviations compared with patients without AE (2±1.7 vs 1.5±0.9 process deviations per patient, p=0.005). Inter-rater reliability in assessing a causal relation of healthcare with the origin of an AE showed a κ of 0.67 (95% CI 0.51 to 0.83).

CONCLUSIONS

This study shows that it is possible to develop a reliable method, which can objectively assess process deviations and the occurrence of AEs in a specified population. This method could be a starting point for developing an electronic tracking system for continuous monitoring in strictly predefined care tracks.

[Lessons learned from the evacuation of the VU University Medical Centre after flooding]

On 8 September 2015, flooding of the lower floors of the VU University Medical Center in Amsterdam caused serious damage to many vital technical services, such as water and power supplies. The decision was made to completely evacuate the university hospital. This paper describes the chronology and events of that day and shares a number of important lessons that were learned, in order to help readers to optimise crisis organisation in their own institutions. A serious situation or disaster can never be standardised in protocols or manuals; flexibility, improvisation and confidence in one another's expertise and commitment are therefore essential.

Benchmarking the use of blood products in cardiac surgery to stimulate awareness of transfusion behaviour : Results from a four-year longitudinal study

Introduction

Cardiac operations account for a large proportion of the blood transfusions given each year, leading to high costs and an increased risk to patient safety. Therefore, it is important to explore initiatives to reduce transfusion rates. This study aims to provide a benchmark for transfusion practice by inter-hospital comparison of transfusion rates, blood product use and costs related to patients undergoing coronary artery bypass grafting (CABG), valve surgery or combined CABG and valve surgery.

Methods

Between 2010 and 2013, patients from four Dutch hospitals undergoing CABG, valve surgery or combined CABG and valve surgery (n = 11,150) were included by means of a retrospective longitudinal study design.

Results

In CABG surgery the transfusion rate ranged between 43 and 54%, in valve surgery between 54 and 67%, and in combined CABG and valve surgery between 80 and 88%. With the exception of one hospital, the trend in transfusion rate showed a significant decrease over time for all procedures. Hospitals differed significantly in the units of blood products given to each patient, and in the use of specific transfused combinations of blood products, such as red blood cells (RBCs) and a combination of RBCs, fresh frozen plasma (FFP) and platelets.

Conclusion

This study indicates that benchmarking blood product usage stimulates awareness of transfusion behaviour, which may lead to better patient safety and lower costs. Further studies are warranted to improve awareness of transfusion behaviour and increase the standardisation of transfusion practice in cardiac surgery.

Antidepressant use and risk for mortality in 121,252 heart failure patients with or without a diagnosis of clinical depression

BACKGROUND

Depression is a risk factor for mortality in patients with heart failure (HF), however, treating depression with antidepressant therapy does not seem to improve survival. We examined the prevalence of antidepressant use in HF patients, the correlates of antidepressant use subsequent to hospital discharge and the relation between antidepressant use, clinical depression and mortality in patients with HF.

METHODS

121,252 HF patients surviving first hospitalization were stratified by antidepressant use and a diagnosis of clinical depression.

RESULTS

In total, 15.6% (19,348) received antidepressants at baseline, of which 86.7% (16,780) had no diagnosis of clinical depression. Female gender, older age, higher socio-economic status, more comorbidities, increased use of statins, spironolactone and aspirin, lower use of beta-blockers and ACE-inhibitors, greater HF severity and a diagnosis of clinical depression were independently associated with antidepressant use. Patients using no antidepressants with clinical depression and patients using antidepressants, with or without clinical depression, had a significantly higher risk for all-cause mortality (HR, 1.25; 95% CI, 1.15-1.36; HR, 1.24; 95% CI, 1.22-1.27; HR, 1.21; 95% CI, 1.16-1.27, respectively) and CV-mortality (HR: 1.17; 95% CI, 1.14-1.20, P<.001; HR: 1.20; 95% CI, 1.08-1.34, P<.001; HR: 1.21; 95% CI, 1.12-1.29, P<.001, respectively) as compared to patients not using antidepressants without depression in adjusted analysis.

CONCLUSION

Patients with HF taking antidepressants had an increased risk for all-cause and CV-mortality, irrespectively of having clinical depression. These results highlight the importance of further examining the antidepressant prescription pattern in patients with HF, as this may be crucial in understanding the antidepressant effects on cardiac function and mortality.

Health Status and Psychological Distress in Patients with Non-compaction Cardiomyopathy: The Role of Burden Related to Symptoms and Genetic Vulnerability

BACKGROUND

Non-compaction cardiomyopathy (NCCM) is a cardiomyopathy characterized by left ventricular tribeculae and deep intertrabecular recesses. Because of its genetic underpinnings and physical disease burden, noncompaction cardiomyopathy is expected to be associated with a lower health status and increase in pscyhological distress.

PURPOSE

This study determined the health status and psychological distress in NCCM patients. We also examined the potential contribution of genetic predisposition and cardiac symptoms to health status and distress in NCCM, by comparing NCCM patients with (1) patients with familial hypercholesterolemia (FH) and (2) patients with acquired dilated cardiomyopathy (DCM).

METHODS

Patients were recruited from the Erasmus Medical Center, Rotterdam, The Netherlands. Using a case-control design, NCCM patients (N = 45, mean age 46.7 ± 15.1 years, 38 % male) were compared with 43 FH patients and 42 DCM patients. Outcome measures were health status (Short Form Health Survey-12), anxiety (Generalized Anxiety Disorder 7-item scale) and depression (Patient Health Questionnaire 9-item scale).

RESULTS

NCCM patients showed significantly worse health status (Physical Component Score F(1,84) = 9.58, P = .003; Mental Component Score F(1,84) = 16.65, P < .001), anxiety (F(1,85) = 9.63, P = .003) and depression scores (F(1,82) = 5.4, P = .023) compared to FH patients, also after adjusting age, sex, comorbidity, educational level and time since diagnosis. However, NCCM patients did not differ from DCM patients (Physical Component Score F(1,82) = 2,61, P = .11; Mental Component Score F(1,82) = .55, P = .46), anxiety (F(1,82) = 1.16, P = .28) and depression scores (F(1,82) = 1,95, P = .17).

CONCLUSION

Cardiac symptoms are likely to play a role in the observed poor health status and elevated levels of anxiety and depressive symptoms in NCCM, whereas the burden of having a genetic condition may contribute less to these health status and psychological measures.

Association between brain natriuretic peptide, markers of inflammation and the objective and subjective response to cardiac resynchronization therapy

INTRODUCTION

Studies suggest that cardiac resynchronization therapy (CRT) can induce a decrease in brain natriuretic peptide (BNP) and systemic inflammation, which may be associated with CRT-response. However, the evidence is inconclusive. We examined levels of BNP and inflammatory markers from pre-CRT implantation to 14months follow-up in CRT-responders and nonresponders, defined by two response criteria.

METHODS

We studied 105 heart failure patients implanted with a CRT-defibrillator (68% men; age=65.4±10.1years). The objective CRT-response was defined as a reduction of ⩾15% in left ventricular end systolic volume; subjective CRT-response was defined as an improvement of ⩾10 points in patient-reported health status assessed with the Kansas City Cardiomyopathy Questionnaire. Plasma BNP and markers of inflammation (CRP, IL-6, TNFα, sTNFr1 and sTNFr2) were measured at three time points.

RESULTS

Pre-implantation concentrations of TNFα were significantly lower for subjective responders compared to nonresponders (p=.05), but there was no difference in BNP and the other inflammatory markers at baseline. Objective CRT-response was significantly associated with lower BNP levels over time (F=27.31, p<.001), and subjective CRT-response with lower TNFα levels (F=5.67, p=.019).

CONCLUSION

Objective and subjective response to CRT was associated with lower levels of BNP and TNFα, respectively, but not with other markers of inflammation. This indicates that response to CRT is not automatically related to a stronger overall decrease in inflammation. Large-scale studies are warranted that further examine the relation between the clinical effects of CRT on inflammatory markers, as the latter have been associated with poor prognosis in heart failure.

Predictors of changes in health status between and within patients 12 months post left ventricular assist device implantation

BACKGROUND

Improving patient-reported outcomes (e.g. health status) has become an important goal in left ventricular assist device (LVAD) therapy, in addition to reducing mortality and morbidity. We examined predictors of changes in health status scores between and within patients 12 months post LVAD implantation.

METHODS

Health status [Kansas City Cardiomyopathy Questionnaire (KCCQ); Short-Form 12 (SF-12)] were assessed at 3-4 weeks after implantation, and at 3, 6 and 12 months follow up in 54 LVAD patients (74% men; mean age 54 ± 9 years).

RESULTS

Patients experienced significant improvements in health status between baseline and 3 months follow-up as assessed by the KCCQ (clinical summary score: F = 33.49, P < 0.001; overall summary score: F = 31.13, P < 0.001) and the SF-12 (physical component score: F = 31.59, P < 0.001; mental component score: F = 21.77, P < 0.001), but not between 3 months and 12 months follow-up (P > 0.05 for all). Higher scores on anxiety and depression over time, older age, lower ejection fraction, and more co-morbidity were associated with poorer health status scores on one or both of the KCCQ and SF-12 subscales. The majority of the between-patient variance of the mental component summary scores (82.6%), but not the KCCQ overall summary score (41.9%), KCCQ clinical summary score (36.2%) and physical component summary scores (23.2%), was explained by the sociodemographic, clinical and psychological factors.

CONCLUSION

The majority of LVAD patients show a significant improvement in health status after LVAD implantation. However, there are large differences in individual health status score trajectories which are only partly explained by measures of disease severity pre-LVAD, co-morbidity and psychological stress.

Psychological distress in patients with a left ventricular assist device and their partners: an exploratory study

BACKGROUND

Left ventricular assist device (LVAD) therapy is increasingly used in patients with advanced heart failure, and may have a significant psychological impact on both patients and their partners. Hence, we examined the distress levels of LVAD patients and their partners.

METHODS

Anxiety, depression and post-traumatic stress disorder (PTSD) were assessed at 3-4 weeks after implantation, and at 3 and 6 months follow-up in 33 LVAD patients (73% men; mean age=54±10 years) and 33 partners (27% men; mean age=54±11 years).

RESULTS

The prevalence of anxiety in LVAD partners was significantly higher compared to LVAD patients at baseline (48% vs. 23%, p=0.03) and 3 months follow-up (44% vs. 15%, p=0.02), but not at 6 months follow-up (p=0.43). No differences were found for depression and PTSD (ps>0.05). Scores between the LVAD patients and partners showed only a significant correlation at baseline between the anxiety, depression and PTSD score of the patient and the depression score of the partner (r anx=0.40, p=0.04; rdep=.40, p=0.04; r PSTD=0.46, p=0.05). Multivariable analyses showed no significant association between the role (patient vs. partner) and anxiety, depression and PTSD over time after correction for age, gender and clinical covariates. However, after correction for Type D personality and the use of psychotropic medication the LVAD partners showed significantly higher anxiety (F=6.95, p=0.01) and depression (F=3.94, p=0.04) scores over time compared to LVAD patients.

CONCLUSION

LVAD partners had significantly higher levels of anxiety than LVAD patients. Emotional distress of LVAD partners should gain more attention, as partners are an essential source of support for LVAD patients.

Positive affect dimensions and their association with inflammatory biomarkers in patients with chronic heart failure

BACKGROUND

In cardiac patients positive affect has found to be associated with improved clinical outcomes, with reduced inflammation being one of the potential mechanisms responsible.

METHODS

Positive affect was assessed using The Global Mood Scale (GMS), Positive and Negative Affect Schedule (PANAS), and Hospital Anxiety and Depression Scale (HADS) in patient with chronic heart failure (N=210; 67 ± 9 years, 79% men). Markers of inflammation (TNFα, sTNFr1, sTNFr2, IL-6 and CRP) were measured and averaged at three consecutive time points.

RESULTS

The positive affect dimensions of the GMS and PANAS were significantly associated with lower averaged levels of sTNFr2, TNFα and IL-6 (p<.1), even after adjustment for clinical and lifestyle confounders. Positive affect of the HADS was significantly associated with lower averaged levels of hsCRP (p<.1), but was no longer significant after correction for lifestyle confounders and depressive symptoms.

CONCLUSION

Positive affect is associated with reduced inflammation in patients with heart failure.

Association between psychological measures and brain natriuretic peptide in heart failure patients

OBJECTIVE

Brain natriuretic peptide (BNP) is a promising marker for heart failure diagnosis and prognosis. Although psychological factors also influence heart failure (HF) prognosis, this might be attributed to confounding by BNP. Our aim was to examine the association between multiple psychological markers using a prospective study design with repeated N-terminal pro-B-type natriuretic peptide (NT-proBNP) measurements.

DESIGN

The sample comprised 94 outpatients with systolic HF (80% men; mean age =62.2 ± 9.3). The psychological markers (i.e., anxiety, depression, and Type D personality), assessed with the Hospital Anxiety and Depression Scale (HADS), the Beck Depression Inventory (BDI), and the Type D Scale (DS14) were assessed only at baseline. Plasma NT-proBNP levels were measured at baseline and at 9 months.

RESULTS

The prevalence of anxiety, depression, and Type D personality at baseline was 23.4% (HADS-A), 17.0% (HADS-D), 46.6% (BDI), and 21.3% (DS14), respectively. At baseline, none of the psychological risk markers were associated with NT-proBNP levels (all p >.05). In the subset of patients with scores on psychological risk markers both at baseline and at 9 months, there were no association between anxiety (p =0.44), depression (HADS-D: p =0.90; BDI: p =0.85), and Type D (p =0.63) with NT-proBNP levels using ANOVA for repeated measures.

CONCLUSIONS

Our findings indicate that measures frequently used in HF to assess psychological risk markers are unconfounded by NT-proBNP. Futher studies are warranted to replicate these findings and examine whether psychological risk markers are independent predictors of prognosis in HF or an artifact that may be attributed to other biological or behavioral mechanisms.

Gender disparities in psychological distress and quality of life among patients with an implantable cardioverter defibrillator

A subset of patients with an implantable cardioverter defibrillator (ICD) reports psychological distress and poor quality of life (QoL). Gender is one of the factors that has been proposed to explain individual differences in these outcomes. In this viewpoint, we (1) review the evidence for gender disparities in psychological distress and QoL in ICD patients by means of a systematic review, and (2) provide recommendations for future research and clinical implications. A systematic search of the literature identified 18 studies with a sample size ≥ 100 that examined gender disparities in anxiety/depression and QoL in ICD patients (mean prevalence of women = 21%; mean age = 62 years). Our review shows that there is insufficient evidence to conclude that gender per se is a major autonomous predictor for disparities in psychological distress and QoL in ICD patients. Women had a higher prevalence of anxiety and poorer QoL in some studies, but there was no statistically significant gender effect in relation to 80% (26/32) of the outcomes reported in the 18 studies. Studies are warranted that are designed a priori and sufficiently powered to examine gender disparities in distress and QoL outcomes in order to establish the exact gender-specific effect. Due to a need to explore the complexity of this issue further, at this time, caution is warranted with respect to the clinical implications.

Effective oligonucleotide-mediated gene disruption in ES cells lacking the mismatch repair protein MSH3

We have previously demonstrated that site-specific insertion, deletion or substitution of one or two nucleotides in mouse embryonic stem cells (ES cells) by single-stranded deoxyribo-oligonucleotides is several hundred-fold suppressed by DNA mismatch repair (MMR) activity. Here, we have investigated whether compound mismatches and larger insertions escape detection by the MMR machinery and can be effectively introduced in MMR-proficient cells. We identified several compound mismatches that escaped detection by the MMR machinery to some extent, but could not define general rules predicting the efficacy of complex base-pair substitutions. In contrast, we found that four-nucleotide insertions were largely subject to suppression by the MSH2/MSH3 branch of MMR and could be effectively introduced in Msh3-deficient cells. As these cells have no overt mutator phenotype and Msh3-deficient mice do not develop cancer, Msh3-deficient ES cells can be used for oligonucleotide-mediated gene disruption. As an example, we present disruption of the Fanconi anemia gene Fancf.