Mechanisms of toxic cardiomyopathy

Background: Dilated cardiomyopathy is a frequent disease responsible for 40–50% of cases of heart failure. Idiopathic cardiomyopathy is a primary disorder often related to familial/genetic predisposition. Before the diagnosis of idiopathic cardiomyopathy is made, clinicians must not only rule out viral and immune causes, but also toxic causes such as drugs, environmental agents, illicit substances and natural toxins.

Objective: The objective of this review is to present recent data on the mechanisms underlying toxic cardiomyopathy.

Methods: The US National Library of Medicine Pubmed database was searched from 1980 to December 2017 utilizing the combinations of the search terms “toxic cardiomyopathy”, “drugs”, “anticancer drugs”, “azidothymidine”, “rosiglitazone”, “carbon monoxide”, “alcohol”, “illicit drugs”, “cocaine”, “metamfetamine”, “metals”, “venom”. A total of 339 articles were screened and papers that dealt with the pathophysiology of toxic cardiomyopathy, either in animal models or in clinical practice were selected, with preference being given to more recently published papers, which left 92 articles.

Anticancer drugs: The mechanisms of anthracycline-induced cardiotoxicity are primarily related to their mechanisms of action as anticancer drugs, mainly the inhibition of topoisomerase II β and DNA cleavage. Additional metabolic or oxidative stress factors may play a part, together with interference with iron metabolism. The more recent drugs, trastuzumab and imatinib, also influence stress pathways.

Antiretroviral agents: Azidothymidine is cardiotoxic as a result of mitochondrial toxicity. In addition to energy depletion, azidothymidine also increases the production of mitochondrial reactive oxygen species (ROS).

Antidiabetic drugs: The cardiotoxicity of thiazolidinedione antidiabetic drugs is still under investigation, though interference with mitochondrial respiration or oxidative stress is suspected.

Cocaine: Among the multiple mechanisms involved in cocaine-related cardiotoxicity, excessive sympathetic stimulation with increased myocardial oxygen consumption is well documented in the acute form of left ventricular dysfunction. As for cocaine-related cardiomyopathy, the role of apoptosis and ROS is under investigation.

Ethanol: The aetiology of ethanol-related cardiotoxicity is multifactorial, with individual susceptibility being important. It involves apoptosis, alterations of the excitation–contraction coupling in cardiac myocytes, structural and functional alterations of the mitochondria and sarcoplasmic reticulum, changes in cytosolic calcium flows, changes in calcium sensitivity of myofilaments, alterations of mitochondrial oxidation, deregulation of protein synthesis, decrease of contractile proteins and disproportion between the different types of myofibrils, changes in the regulation of myosin ATPase, up-regulation of the L-type calcium channels, increase of oxidative stress, and induction of ANP and p21 mRNA expression in ventricular myocardium.

Metamfetamines: Catecholamine-mediated toxicity is the probable cause, with a possible role for genetic susceptibility.

Carbon monoxide: In addition to hypoxic injury, carbon monoxide is also directly toxic to the mitochondria, with impairment of mitochondrial respiratory chain at the cytochrome c oxidase level, decrease of glutathione concentrations and of ATP production. There is no evidence for a delayed dilated cardiomyopathy in survivors of an acute exposure.

Metals: Cobalt-related cardiomyopathy probably results from interference with energy production and contractile mechanisms, but additional factors (nutrition, hypothyroidism) are often required. Antimony may cause lethal oxidative stress and cell death mediated by elevation in intra-cellular calcium. Proposed mechanisms for mercury toxicity include glutathione depletion, production of ROS, and interruption in selenium-dependent endogenous enzymatic reactions. The existence of a lithium-induced cardiomyopathy is still debated.

Scorpion venom: Catecholamine release is the probable cause of acute cardiomyopathy following scorpion envenomation.

Conclusions: The mechanisms behind toxic cardiomyopathy are complex and multifactorial but include interference with myocardial cell bioenergetics and intracellular calcium handling, the generation of ROS, neurohormonal stress, and induction of apoptosis.     

Nursing Consultation in a Public Bathhouse: A Community Resource for the Vulnerable Population in a European Capital

Background: In Portugal’s capital, Lisbon, there are 19 public showers (PS) attended by a vulnerable population.

Aim: To describe the assessment and interventions performed during nursing consultations.

Method: This is a quantitative, observational, and cross-sectional study.

Findings: In a convenience sample of 77 users, 52% are females, 43% are single, 52% do not possess any economic resources, 87% have mental health issues, and 32% are homeless. The main nursing focuses found were: arterial hypertension, disease management skills, and emotional suffering. The most used nursing intervention is listening, followed by the expression of feelings, valuing the individual and his/her story, analyzing causes, providing support, and comforting.

Conclusions: This study shows that the main focus of the nursing care in these facilities is the human being. The respect for individuality and dignity was the primary concern, in an attempt to empower the individual to better manage his/her health and illness processes.     

Visit patterns at primary care centres and individual blood pressure level – a cross-sectional study

Objective: Hypertension is a major cause of cardiovascular disease. Nevertheless, blood pressure (BP) is often inadequately treated. We studied visit patterns at primary health care centres (PHCCs) and their relation to individual BP control.

Design and setting: Cross-sectional register-based study on all patients with hypertension who visited 188 PHCCs in a Swedish region.

Patients: A total of 88,945 patients with uncomplicated hypertension age 40–79.

Main outcome measures: Odds ratio (OR) for the individual patient to achieve the BP target of ≤140/90?mmHg.

Results: Overall, 63% of patients had BP?≤?140/90?mmHg (48% BP?<?140/90). The PHCC that the patient was enrolled at and, as part of that, more nurse visits at PHCC level was associated with BP control, adjusted OR 1,10 (95% CI 1.01 to 1.21). Patients visiting PHCCs with the highest proportion of visits with nurses had an even higher chance of achieving the BP target, OR 1.19 (95% CI 1.07 to 1.32).

Conclusions: In a Swedish population of patients with hypertension, about half do not achieve recommended treatment goals. Organisation of PHCC and team care are known as factors influencing BP control. Our results suggests that a larger focus on PHCC organisation including nurse based care could improve hypertension care.     

Medication adherence,biological and lifestyle risk factors in patients with myocardial infarction: a ten-year follow-up on socially differentiated cardiac rehabilitation

Objective: There is strong evidence that medication adherence and lifestyle changes are essential in patients undergoing secondary cardiovascular disease prevention. Cardiac rehabilitation (CR) increases medication adherence and improves lifestyle changes. Patients with cardiac diseases and a low educational level and patients with little social support are less responsive to improve medication adherence and to adapt lifestyle changes. The aim of the present study was to investigate the long-term effects of a socially differentiated CR intervention on medication adherence as well as changes in biological and lifestyle risk factors at two- five- and ten-year follow-up.

Design: A prospective cohort study.

Setting: The cardiac ward at Aarhus University Hospital, Denmark.

Intervention: A socially differentiated CR intervention in addition to the standard CR program.

Subjects: Patients admitted with first-episode myocardial infarction between 2000 and 2004, N?=?379. Patients were defined as socially vulnerable or non-socially vulnerable according to their educational level and extent of social network.

Main outcome measures: Primary outcome was medication adherence to antithrombotics, beta-blockers, statins and angiotensin-converting enzyme inhibitors. Secondary outcomes were biological and lifestyle risk factors defined as; total cholesterol, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, glycated hemoglobin, blood pressure and smoking status.

Results: No significant long-term effect of the intervention was found.

Conclusions: The results indicate a non-significant effect of the intervention. However, it was found that equality in health was improved in the study population except concerning smoking. General practitioners manage to support the long-term secondary cardiovascular disease prevention in all patients regardless of social status.

• Key points

• The socially differentiated intervention did not significantly improve medication adherence or biological and lifestyle risk factors.

• Despite the non-significant effect of the intervention, equality in health was improved except concerning smoking.

• General practitioners managed to support the long-term secondary cardiovascular disease prevention in all patients regardless of social status.

     

Laparoscopic anterior and posterior native tissue repair: a new pelvic floor approach

Introduction: Traditionally, a cystocele caused by a midline defect of the pelvic fascia is treated by vaginal fascia duplication, also known as anterior colporraphy. The rectocele is managed by suturing the posterior fascia and, frequently, the levator ani muscles. We developed the approach of laparoscopic anterior and posterior fascia repair by native tissue.

Material and methods: The methods were based on anterior and posterior exposure of pelvic fascia similar to the preparation of an extended sacral colpopexy. The fascia was compressed and narrowed by absorbable woven sutures, size 1. Twenty-seven patients were followed up for 6–13?months. All patients received additional apical fixation by pectopexy.

Results: In the examination group, 13 patients underwent anterior laparoscopic fascia repair and 23 had posterior repair. We detected one apical and one posterior relapse, and also one in the anterior repair group. The patient with the apical relapse reported pain and de novo urgency. Anatomical reconstruction was achieved in all other patients.

Summary: Laparoscopic anterior and posterior native tissue repair appears to be a feasible method for the treatment of midline cystocele and rectocele. No new risks were observed. The technique leaves no scar in the vagina and is well accepted.

Abbreviations: POPQ: Pelvic Organ Prolapse Quantification System; FDA: Food and Drug Association; US: United States; Fig: Figure; ICIQ: International Consultation on Incontinence Questionnaire     

Quantitative real-time PCR for differential diagnostics of parvovirus B19 infection in acute liver failure patients

Background: Human Parvovirus B19 (B19V) is a common pathogen worldwide. After primary infection, B19V-DNA may permanently persist in non-erythroid tissues, including the liver of patients with acute liver failure (ALF).

Objective: To validate a real-time PCR (qPCR) for the quantification of B19V-DNA, in order to establish a differential diagnosis for B19V infection in ALF patients.

Methods: The qPCR techniques were based on Sybr Green® and TaqMan® methodologies. To evaluate the quality parameters of both methods, samples from patients with or without B19V infection were tested. The diagnostic utility of qPCR in the detection B19V-DNA in patients with ALF was evaluated by testing archived serum and hepatic tissue explants from 10 patients.

Results: The Sybr Green® methodology showed 97% efficiency, the limits of detection and quantification were 62.6 and 53,200 copies/mL, respectively. The TaqMan® methodology showed 95% efficiency, the limits of detection and quantification were 4.48 and 310 copies/mL, respectively. A false positive result was found only with the Sybr Green® methodology. Among ALF patients without defined etiology, three (30%) were positive for B19V DNA in serum and liver.

Conclusion: The qPCR methods validated here were effective in clarifying uncommon cases of B19V-related ALF and are fit for differential diagnosis of ALF causes.     

Prevalence of recent fentanyl use among treated users of illicit opioids in England: based on piloted urine drug screens

Objective: To use a pilot of national fentanyl screening to establish the current prevalence of recent fentanyl use among treated users of illicit opioids in the English treatment system and inform the design of a full study.

Design: Cross-sectional fentanyl metabolite urine screening in randomly-selected study sites, stratified to cover all nine geographical regions of England, supplemented with self-report subsequent to a positive fentanyl test.

Patients: 468 adult (18 years of age and above) patients receiving treatment for opioid use disorder, screened December 2017 to May 2018.

Results: The fentanyl-positive rate in patients receiving treatment for opioid use disorder in the English treatment system was 3% (15/468, 95% CI 1.8% to 5.2%) with a per-site range (for the 10 sites in 9 regions where fentanyl was detected) of between 2% (1/57) and 15% (4/27). Self-report data indicated that the majority of fentanyl-positives (12/15, 80%) was unaware of having purchased fentanyl.

Conclusions: Despite alerts already in place, patients receiving treatment for opioid use disorder, who were fentanyl-positive, were unwittingly purchasing and consuming fentanyl.     

Diagnosis and treatment of pediatric pulmonary arterial hypertension

Introduction: Pediatric pulmonary arterial hypertension (PAH) remains a rare and severe disease with a poor prognosis. PAH may be idiopathic, heritable or associated with systemic conditions in particular associated with congenital heart disease.

Areas covered: A thorough and extensive diagnostic approach is required for a correct diagnosis. The outcome has improved over the last decade with a better diagnostic approach and with the initiation of new targeted therapies. However, there is still significant progress to achieve as there is still no cure for this devastating disease.

Expert opinion: Adapted clinical studies to define the best therapeutic approach are needed. Even if the treatment approach is still mainly derived from adult data and expert consensus, several studies and registries are currently underway and should deliver important information in the next future.

This review aims to give an overview of the current diagnosis and treatment strategies of PAH.     

The effectiveness of stretching for infants with congenital muscular torticollis

Introduction: Congenital muscular torticollis (CMT) is a neck deformity that involves unilateral shortening of the sternocleidomastoid (SCM). Conservative physiotherapy management of CMT is primarily focused on stretching the affected SCM. However, there is limited research evidence on the use of stretching to improve the extensibility of SCM in infants with CMT.

Aim: To investigate the effectiveness of stretching for infants with CMT.

Method: A systematic search of AMED, CINAHL, MEDLINE, EMBASE, Physiotherapy Evidence Database (PEDro) and Cochrane Library was conducted during the period 2011–2018.

Results: Seven articles that met eligibility criteria were reviewed out of a total number of 415 articles that were screened; two articles were randomised control trials and five were cohort studies. The studies typically reported statistically significant benefits of stretching for the restoration of cervical range of movement and SCM thickness (p < 0.05). Appraisal of the studies revealed varied quality.

Conclusion: The results suggest that stretching is an effective treatment intervention for the management of infants with CMT and early physiotherapy referral can lead to decreased treatment duration. However, due to a variation in study quality; additional high-quality research is needed to help formulate more robust conclusions.     

The lived experience of Joint Hypermobility and Ehlers-Danlos Syndromes: a systematic review and thematic synthesis

Background: Joint Hypermobility Syndrome (JHS) and Ehlers-Danlos Syndrome (EDS) are heritable connective tissue disorders characterised by joint instability, pain, anxiety, depression and poor quality of life. However, peoples’ lived experiences are not well understood.

Objective: To understand the lived experiences of people with JHS and EDS.

Methods: A systematic review was conducted using PRISMA guidelines. Critical appraisal and a thematic synthesis of participants’ lived experiences were conducted. Eight online databases were searched from 1990 to February 2018: AMED, CINAHL, EMBASE, MEDLINE, PubMed, PsychINFO, SPORTDiscus and the Cochrane Library. Eligibility criteria were: (1) People with either JHS or EDS, clearly distinguished from generalised joint laxity; (2) Qualitative studies, or mixed qualitative and quantitative studies with qualitative data reported independently and (3) Published in English.

Results: A total of nine studies were included. Five main themes were identified: (1) Lack of professional understanding; (2) Restricted life; (3) Social stigma; (4) Trying to ‘keep up’ and (5) Gaining control. The implications of these results are explored.

Conclusions: Further qualitative research is required to examine the impact of JHS/EDS on a wider range of participants and in greater depth.     

Noise Levels in an Acute Psychiatric Unit: An Exploratory Observational Study

Background: Noise is an important aspect of the ward atmosphere climate – the combination of the architectural solutions, organizational features, the psychological traits of the operators and their interactions, and the patients’ characteristics. Despite its importance noise levels have been less analyzed than other aspects of the ward atmosphere climate.

Aim: In this study the aim is to identify the sources of noise and the sound pressure level in an acute psychiatric ward, and secondly to ascertain whether this is perceived by inpatients as disturbing.

Method: The sound pressure levels were measured during three nonconsecutive mornings, three afternoons, and three nights. A questionnaire was administered to ascertain patients’ opinions about the noise in the ward.

Results: The average noise level in the ward was 62.5?dB(A)eq in the morning, 55.8 in the afternoon, and 51.5 at night. A total of 23 patients took part in the study: 65.2% of this sample did not perceive the noise in the ward as disturbing.

Conclusion: In a psychiatric ward, the main source of noise is the verbal communication, and acoustic pressure also derived from care activities based around relationships. Other sources of noise perceived as disturbing came from the opening and closing of doors and the entry doorbell. Adopting relational and architectural-structural measures could reduce the sound pressure, with a view to further improving the ambience in the ward.     

Treatment needs of drug users: The perspective of Iranian women

Background: Treatment needs and health-care issues in women are completely different from those of men. In order to develop and apply successful treatment programs for substance-dependent women, gender-based differences should be considered to provide them with effective health care and treatment services.

The present study was conducted to investigate the views of substance dependent women about their health care and treatment needs.

Methods: In-depth and semi-structured interviews were conducted among 20 opiate using women who were chosen through purposeful sampling from camps, methadone maintenance treatment (MMT) centers and women’s prison in Sanandaj, Iran in 2015. Data were analyzed using content analysis (a conventional approach).

Findings: Three main factors were recognized through data analysis: individual factors, structural factors, and social factors.

Conclusions: The results of the study suggests the need for structural changes such as improving comprehensive services and enhancing referral system regarding gender-based differences to provide the substance-dependent women with more effective treatment and medical care.     

A cross-sectional study evaluating the knowledge and beliefs about,and the use of antibiotics amongst Malaysian university students

Background: The introduction of antibiotics into modern medicine has changed clinical care by saving millions of lives. However, misuse of antibiotics has led to their benefits being overshadowed by the development of antimicrobial resistance.

Aims of Study: This study aimed to assess university students’ knowledge and beliefs about and their use of antibiotics.

Methods: This cross-sectional study was conducted among 674 medical and non-medical students of the National Defence University of Malaysia, using universal and convenience sampling methods. The data was collected using a validated questionnaire and analyzed using IBM SPSS 24, and the MANOVA test and Logistic Regression were used to explore the associated factors.

Results: More than half of the respondents’ knowledge was low and their health beliefs outdated. Age, race and program were significantly associated with up-to-date knowledge and beliefs about antibiotic use, factors associated with finishing a course of antibiotics were studying medicine, personal health, and ethnicity. The significant factors associated with antibiotic self-prescribing were beliefs having been prescribed antibiotics during the last one year, and trusting the doctors who did not prescribe antibiotics.

Conclusion: This study has identified a concerning low knowledge about antibiotics amongst some Malaysian university students, reflected in use of un-prescribed antibiotics and a lack of adherence to treatment. There is a need for educational interventions for students regarding antibiotic usage and resistance issues.     

Exploring an agency-communion model of identity transformation in recovery from substance misuse

Background: Narrative research shows that identity change is key to recovery from substance misuse. Theories have focused on either personal or social factors in this process. A framework encompassing Agency and Communion has been useful in understanding narratives in similar populations.

Objectives: The study proposes that substance misuse and recovery can be understood from an Agency-Communion perspective.

Method: The Life As A Film Task (LAAF) and repertory grids were used to explore Agency and Communion in a sample of 32 participants.

Results: Smallest Space Analysis of LAAF items revealed four different narratives according to themes of Agency and Communion. Case examples indicated that Agency and Communion predicted a recovery identity, and the absence of Agency and Communion predicted substance misuse. Analysis of repertory grids showed fixed low Agency/Communion construct systems in cases of substance misuse and transformed high Agency/Communion construct systems in cases of recovery. Transformation from a low Agency/Communion substance-using identity toward a high Agency/Communion recovery identity was highlighted.

Conclusions: These preliminary findings illustrate the role of Agency and Communion processes in identity-transforming recovery from substance misuse.     

Ask them all: Self-report universal prenatal substance use screening in the United States

Background: Increasing rates of opioid use in the United States have created a national public health crisis. Substance use in pregnancy increases risk for poor birth outcomes. National advisory groups recommend screening all women for prenatal substance use. However, there is no single approach or tool recommended for universal prenatal substance use screening.

Objective: This study seeks to evaluate the effectiveness of universal screening using a direct approach self-report of substance use in pregnancy.

Method: A retrospective review of de-identified data to evaluate women’s willingness to self-report substance use through direct screening. Data obtained from 24 months of maternal self-report were analyzed to assess the overall effectiveness of a direct screening method during the prenatal period.

Results: Findings revealed maternal substance use disclosure rates of 9.7%, higher than the 5.4% United States national average.

Conclusion: Increasing awareness of maternal prenatal substance use offers opportunity for education and support early in pregnancy. Findings suggest the direct method may support maternal self-report of substance use in universal prenatal screening. Additional study with diverse populations and clinical settings is needed.     

Psychometric evaluation of the Drug Avoidance Self-Efficacy Scale

Purpose: The aim of this study was to adapt the Drug Avoidance Efficacy Scale, and to assess the validity and reliability of the scale in Turkish adolescents.

Methods: This is a psychometric study. The number of students who were recruited was twenty times the number of scale items. A convenience sample of 320 undergraduate students was recruited from a university in Turkey.

Result: Principal component analysis identified one factor. The factor loadings of the items were ranged 0.41–0.91. The internal reliability coefficient was 0.70 for the scale. It was also found that the scale explained 73.1% of the total variance.

Conclusion: According to the results of this study, it may be statedthat this study provides evidence for the Drug Avoidance Self-Efficacy Scale’s validity and reliability.     

Tramadol misuse in the Niger Delta; A review of cases presenting within a year

Objective: Tramadol is an opioid agent used for pain management with huge potentials of misuse. The misuse of Tramadol is associated with increased morbidity and mortality; and this is common among young adults in low-income settings. The aim of this study is to highlight cases of Tramadol misuse managed in a rural teaching hospital in the Niger Delta region of Nigeria.

Method: We used the case report design to highlight five cases of Tramadol misuse in our setting over a year period.

Results: Majority of the cases were males and young adults using Tramadol for non-medical purposes. They all presented with various clinical features including altered levels of consciousness.

Conclusion: Tramadol misuse among young male adults is common in our region. Further research and intervention programs are essential to understand the true burden and also prevent further misuse in the community.     

Giving callers the option to bypass the telephone waiting line in out-of-hours services: a comparative intervention study

Objective: Acute out-of-hours (OOH) healthcare is challenged by potentially long waiting time for callers in acute need of medical aid. OOH callers must usually wait in line, even when contacting for highly urgent or life-threatening conditions. We tested an emergency access button (EAB), which allowed OOH callers to bypass the waiting line if they perceived their health problem as severe. We aimed to investigate EAB use and patient characteristics associated with this use.

Design: Comparative intervention study.

Setting: OOH services in two major Danish healthcare regions.

Intervention: Giving callers the option to bypass the telephone waiting line by introducing an EAB.

Participants: OOH service callers contacting during end of October to mid-December 2017.

Main outcome measures: Proportions of EAB use, waiting time and background information on participants in two settings differing on organisation structure, waiting time and triage personnel.

Results: In total, 97,791 out of 158,784 callers (61.6%) chose to participate. The EAB was used 2905 times out of 97,791 (2.97%, 95%CI 2.86; 3.08). Patient characteristics associated with increased EAB use were male gender, higher age, low education, being retired, and increasing announced estimated waiting time. In one region, immigrants used the EAB more often than native Danish callers.

Conclusion: Only about 3% of all callers chose to bypass the waiting line in the OOH service when given the option. This study suggests that the EAB could serve as a new and simple tool to reduce the waiting time for severely ill patients in an OOH service telephone triage setting.

• Key Points

• Acute out-of-hours healthcare is challenged by overcrowding and increasing demand for services.

• This study shows that only approximately 3% of callers chose to bypass the telephone waiting queue when given the opportunity through an emergency access button.

• An emergency access button may serve as a new tool to help reduce the triage waiting time for severely ill patients in out-of-hours medical facilities.

     

Burn care and rehabilitation in Australia: health professionals’ perspectives

Objective: To understand health professionals’ perspectives of burn care and rehabilitation.

Design: Qualitative and semi-structured interviews.

Setting: Australian burn and rehabilitation units.

Participants: Twenty-two clinicians working in burns units across disciplines and healthcare settings.

Results: The data portrayed the health professionals’ perspectives of burn care and rehabilitation in Australia. Three themes were identified: (1) interprofessional collaboration; (2) integrated community care, and (3) empowering patients to self-care.

Conclusion: Burn care and rehabilitation remains a complex and a challenging area of care with limited access to burn services especially in rural and remote areas. Interprofessional training and education of health professionals involved with the complex care of burn injury remains a key element to support and sustain the long-term rehabilitation requirements for patients and their families. Empowering patients to develop independence early in their rehabilitation is fundamental to their ongoing recovery. A burns model of care that embraces a multidisciplinary collaboration and integrated care across the continuum has the potential to positively impact recovery and improve health outcomes.

• Implications for rehabilitation

• Burn care and rehabilitation remains a complex and challenging area of care.

• Managing the rehabilitation phase after burn injury can be as complex as managing the acute phase.

• Interprofessional collaboration, integrated community care, and empowering patients to self-care are key elements for sustaining the rehabilitation of adults with burn injuries.