Development and validation of a multi-dimensional diagnosis-based comorbidity index that improves prediction of death in men with prostate cancer: Nationwide, population-based register study

by Marcus Westerberg, Sandra Irenaeus, Hans Garmo, Pär Stattin, Rolf Gedeborg

Assessment of comorbidity is crucial for confounding adjustment and prediction of mortality in register-based studies, but the commonly used Charlson comorbidity index is not sufficiently predictive. We aimed to develop a multidimensional diagnosis-based comorbidity index (MDCI) that captures comorbidity better than the Charlson Comorbidity index. The index was developed based on 286,688 men free of prostate cancer randomly selected from the Swedish general population, and validated in 54,539 men without and 68,357 men with prostate cancer. All ICD-10 codes from inpatient and outpatient discharges during 10 years prior to the index date were used to define variables indicating frequency of code occurrence, recency, and total duration of related hospital admissions. Penalized Cox regression was used to predict 10-year all-cause mortality. The MDCI predicted risk of death better than the Charlson comorbidity index, with a c-index of 0.756 (95% confidence interval [CI] = 0.751, 0.762) vs 0.688 (95% CI = 0.683, 0.693) in the validation cohort of men without prostate cancer. Men in the lowest vs highest MDCI quartile had distinctively different survival in the validation cohort of men with prostate cancer, with an overall hazard ratio [HR] of 5.08 (95% CI = 4.90, 5.26). This was also consistent within strata of age and Charlson comorbidity index, e.g. HR = 5.90 (95% CI = 4.65, 7.50) in men younger than 60 years with CCI 0. These results indicate that comorbidity assessment in register-based studies can be improved by use of all ICD-10 codes and taking related frequency, recency, and duration of hospital admissions into account.

Cardiac response to water activities in children with Long QT syndrome type 1

by Anna Lundström, Urban Wiklund, Annika Winbo, Håkan Eliasson, Marcus Karlsson, Annika Rydberg

Background

Swimming is a genotype-specific trigger in long QT syndrome type 1 (LQT1).

Objective

To examine the autonomic response to water activities in children and adolescents with LQT1.

Methods

In this cross-sectional study, LQT1 patients were age and sex matched to one healthy control subject. Electrocardiograms (ECGs) were recorded during face immersion (FI), swimming, diving, and whole-body submersion (WBS). Heart rate (HR) and heart rate variability (HRV) was measured. The high frequency (HF) component of HRV was interpreted to reflect parasympathetic activity, while the low frequency (LF) component was interpreted as reflecting the combined influence of sympathetic and parasympathetic activity on autonomic nervous modulation of the heart.

Results

Fifteen LQT1 patients (aged 7–19 years, all on beta-blocker therapy) and fifteen age and sex matched non-medicated controls were included. No significant ventricular arrhythmias were observed in the LQT1 population during the water activities. Out of these 15 matched pairs, 12 pairs managed to complete FI and WBS for more than 10 seconds and were subsequently included in HR and HRV analyses. In response to FI, the LQT1 group experienced a drop in HR of 48 bpm, compared to 67 bpm in the control group (p = 0.006). In response to WBS, HR decreased by 48 bpm in the LQT1 group and 70 bpm in the control group (p = 0.007). A significantly lower PTOT (p Conclusion

A significantly lower HR decrease in response to water activities was observed in LQT1 subjects on beta-blocker therapy, compared to matched non-medicated controls. The data suggests an impaired parasympathetic response in LQT1 children and adolescents. An aberrant autonomic nervous system (ANS) response may cause an autonomic imbalance in this patient group.

Angiotensin II in liver transplantation (AngLT-1): protocol of a randomised, double-blind, placebo-controlled trial

Introduction

Catecholamine vasopressors such as norepinephrine are the standard drugs used to maintain mean arterial pressure during liver transplantation. At high doses, catecholamines may impair organ perfusion. Angiotensin II is a peptide vasoconstrictor that may improve renal perfusion pressure and glomerular filtration rate, a haemodynamic profile that could reduce acute kidney injury. Angiotensin II is approved for vasodilatory shock but has not been rigorously evaluated for treatment of hypotension during liver transplantation. The objective is to assess the efficacy of angiotensin II as a second-line vasopressor infusion during liver transplantation. This trial will establish the efficacy of angiotensin II in decreasing the dose of norepinephrine to maintain adequate blood pressure. Completion of this study will allow design of a follow-up, multicentre trial powered to detect a reduction of organ injury in liver transplantation.

Methods and analysis

This is a double-blind, randomised clinical trial. Eligible subjects are adults with a Model for End-Stage Liver Disease Sodium Score ≥25 undergoing deceased donor liver transplantation. Subjects are randomised 1:1 to receive angiotensin II or saline placebo as the second-line vasopressor infusion. The study drug infusion is initiated on reaching a norepinephrine dose of 0.05 µg kg^-1 min^-1 and titrated per protocol. The primary outcome is the dose of norepinephrine required to maintain a mean arterial pressure ≥65 mm Hg. Secondary outcomes include vasopressin or epinephrine requirement and duration of hypotension. Safety outcomes include incidence of thromboembolism within 48 hours of the end of surgery and severe hypertension. An intention-to-treat analysis will be performed for all randomised subjects receiving the study drug. The total dose of norepinephrine will be compared between the two arms by a one-tailed Mann-Whitney U test.

Ethics and dissemination

The trial protocol was approved by the local Institutional Review Board (#20–30948). Results will be posted on ClinicalTrials.gov and published in a peer-reviewed journal.

Trial registration number

ClinicalTrials.govNCT04901169

A hybrid systematic narrative review of instruments measuring home‐based care nurses' competency

Abstract

Aim

The aim of the study was to identify and synthesize the contents and the psychometric properties of the existing instruments measuring home-based care (HBC) nurses' competencies.

Design

A hybrid systematic narrative review was performed.

Review Methods

The eligible studies were reviewed to identify the competencies measured by the instruments for HBC nurses. The psychometric properties of instruments in development and psychometric testing design studies were also examined. The methodological quality of the studies was evaluated using the Medical Education Research Study Quality Instrument and COSMIN checklist accordingly.

Data Sources

Relevant studies were searched on CINAHL, MEDLINE (via PubMed), EMBASE, PsychINFO and Scopus from 2000 to 2022. The search was limited to full-text items in the English language.

Results

A total of 23 studies reporting 24 instruments were included. 12 instruments were adopted or modified by the studies while the other 12 were developed and psychometrically tested by the studies. None of the instruments encompassed all of the 10 home-based nursing care competencies identified in an earlier study. The two most frequently measured competencies were the management of health conditions, and critical thinking and problem-solving skills, while the two least measured competencies were quality and safety, and technological literacy. The content and structural validity of most instruments were inadequate since the adopted instruments were not initially designed or tested among HBC nurses.

Conclusion

This review provides a consolidation of existing instruments that were used to assess HBC nurses' competencies. The instruments were generally not comprehensive, and the content and structural validity were limited. Nonetheless, the domains, items and approaches to instrument development could be adopted to develop and test a comprehensive competency instrument for home-based nursing care practice in the future.

Impact

This review consolidated instruments used to measure home-based care nurses' competency. The instruments were often designed for ward-based care nurses hence a comprehensive and validated home-based nursing care competency instrument is needed. Nurses, researchers and nursing leaders could consider the competency instruments identified in this review to measure nurses' competencies, while a home-based nursing care competency scale is being developed.

Patient or Public Contribution

No patient or public contribution was required in this review.

Factors associated with risk of falling among younger inpatients in a mental health setting—A systematic review

Abstract

Aim

To synthesise evidence related to risk factors of falls among younger mental health inpatients age ≤65 years old.

Background

Hospitalised patients with mental illness are at increased risk of falling. Specific risk factors for falls for younger inpatients are poorly understood.

Design

Systematic review.

Methods

Medline, CINAHL, APA PsycINFO, Scopus and Web of Science were searched for studies published in English till December 2022. The review followed the 2020 PRISMA checklist. Odds ratios and P values of significant risk fall factors and the frequency of factors related to circumstances of falls were extracted.

Results

Nine studies were included and 95 risk factors, across seven categories were extracted. These categories included socio-demographic, fall-related factors, functional status, health and mental status, psychiatric diagnosis and assessment, medication, and staff related factors. Factors related to medication, health and mental status are most reported. Majority of the patients sustained minor or no injury from the fall and circumstances of fall vary across studies.

Conclusion

Factors strongly associated with risk of falls were dizziness, use of psychotropics and antihypertensive drugs. A meta-analysis of risk factors was not possible due to different dependent variables studied, controlled confounding variables and control groups used.

Relevance to clinical practice

Fall prevention is relevant to all patients in mental health settings. Approaches to fall risk assessment and management need to be better tailored to younger mental health patients in the psychiatric setting.

Patient and public contribution

Patient or public contribution was not possible because of the study design.

Development and Psychometric Evaluation of the Children's Illness-Related Concerns Scale

Background Despite the effect of maternal breast cancer on many children, there is no valid or reliable quantitative measure of the concern that children attribute to their mothers' disease, which constrains both science and clinical practice. Objectives This study aimed to develop and psychometrically evaluate the initial measures of child-reported, illness-related concerns associated with maternal cancer. Methods The study was conducted in three phases: scoping review, item extraction from a battery of items obtained from school-aged children about general issues related to their mothers' breast cancer, and testing of the three proposed structural models of these extracted items using confirmatory factor analysis. The scoping review yielded five categories of illness-related concerns: altered family routines, uncertainty, concerns about illness contagion, maternal death, and maternal well-being. To reflect these five categories, 18 items were extracted from a 93-item questionnaire completed by 202 school-aged children regarding their mothers' breast cancer. Next, three structural models were hypothesized to assess the construct validity of illness-related concerns: five-, three-, and one-factor models. Confirmatory factor analysis was used to test and compare the models. Results The five-factor model best fit the data, and each factor showed adequate internal consistency reliability. These findings align with the a priori five-factor model informed by the scoping review. Conclusion The results provide initial evidence of the construct validity of the 18-item Children's Illness-Related Concerns Scale, which can be used to assess children's concerns and inform future intervention studies.

Interindividual Variability in Self-Monitoring of Blood Pressure Using Consumer-Purchased Wireless Devices

Background Engagement with self-monitoring of blood pressure (BP) declines, on average, over time but may vary substantially by individual. Objectives We aimed to describe different 1-year patterns (groups) of self-monitoring of BP behaviors, identify predictors of those groups, and examine the association of self-monitoring of BP groups with BP levels over time. Methods We analyzed device-recorded BP measurements collected by the Health eHeart Study—an ongoing prospective eCohort study—from participants with a wireless consumer-purchased device that transmitted date- and time-stamped BP data to the study through a full 12 months of observation starting from the first day they used the device. Participants received no instruction on device use. We applied clustering analysis to identify 1-year self-monitoring, of BP patterns. Results Participants had a mean age of 52 years and were male and White. Using clustering algorithms, we found that a model with three groups fit the data well: persistent daily use (9.1% of participants), persistent weekly use (21.2%), and sporadic use only (69.7%). Persistent daily use was more common among older participants who had higher Week 1 self-monitoring of BP frequency and was associated with lower BP levels than the persistent weekly use or sporadic use groups throughout the year. Conclusion We identified three distinct self-monitoring of BP groups, with nearly 10% sustaining a daily use pattern associated with lower BP levels.