Can parents adjust to the idea that their child is at risk for a sudden death?: Psychological impact of risk for long QT syndrome

The Lancet Commission to reduce the global burden of sudden cardiac death: a call for multidisciplinary action

Despite major advancements in cardiovascular medicine, sudden cardiac death (SCD) continues to be an enormous medical and societal challenge, claiming millions of lives every year. Efforts to prevent SCD are hampered by imperfect risk prediction and inadequate solutions to specifically address arrhythmogenesis. Although resuscitation strategies have witnessed substantial evolution, there is a need to strengthen the organisation of community interventions and emergency medical systems across varied locations and health-care structures. With all the technological and medical advances of the 21st century, the fact that survival from sudden cardiac arrest (SCA) remains lower than 10% in most parts of the world is unacceptable. Recognising this urgent need, the Lancet Commission on SCD was constituted, bringing together 30 international experts in varied disciplines. Consistent progress in tackling SCD will require a completely revamped approach to SCD prevention, with wide-sweeping policy changes that will empower the development of both governmental and community-based programmes to maximise survival from SCA, and to comprehensively attend to survivors and decedents' families after the event. International collaborative efforts that maximally leverage and connect the expertise of various research organisations will need to be prioritised to properly address identified gaps. The Commission places substantial emphasis on the need to develop a multidisciplinary strategy that encompasses all aspects of SCD prevention and treatment. The Commission provides a critical assessment of the current scientific efforts in the field, and puts forth key recommendations to challenge, activate, and intensify efforts by both the scientific and global community with new directions, research, and innovation to reduce the burden of SCD worldwide.

Polypharmacy, Gender Disparities, and Ethnic and Racial Predispositions in Long QT Syndrome: An In-Depth Review

Long QT syndrome (LQTS) is a complex disorder of cardiac electrophysiology. It is characterized by delayed myocardial polarization leading to QT prolongation and alterations on the ST segment and T wave visible on electrocardiogram (ECG). Syncope is a common manifestation, and torsade de pointes (TdP) can lead to sudden cardiac death. Three major LQTS genes (KCI31, KCNH2, and SCN5) lead to most of the cases of LQTS. Lifestyle modifications, beta blockers, and implantable cardioverter defibrillator (ICD) placement are the main treatments for LQTS. Polypharmacy, including QT-prolonging drugs, has been shown to worsen LQTS. The impact on potassium channels and the human ether-a-go-go-related gene (hERG) is the mechanism behind the QT interval prolongation caused by these medications. There is an increased incidence of LQTS among African-American men and women as compared to Caucasians. Women with LQTS tend to have a higher mortality rate from the condition, especially during menstruation and shortly after giving birth. Genetic testing is reserved to those patientswho exhibit either a strong clinical index of suspicion or experience persistent QT prolongation despite their lack of symptoms. Knowing the genetics, racial, and gender discrepancies can help improve patient management and a better comprehension on each case. Proper understanding of how ion channels function and their interaction with medications will lead to a better comprehension and to develop effective forms to treat those patients.

Exploring the role of Islam on the lived experience of patients with Long QT Syndrome in Saudi Arabia

Genetic services are rapidly growing in the Arab world leading to increasing number of patients being diagnosed with genetic disorders. Islam is the only/major religion of the local population in these countries. Muslim patients integrate religion in virtually every aspect of their lives, and it is vital to understand the role of Islam on their coping and decision-making in the context of genetic counseling. This will help provide patients with the most appropriate services aligned to their religious beliefs and will improve outcomes. Increasing numbers of patients are being diagnosed with Long QT syndrome in Saudi Arabia. Using semi-structured interviews, this study explored the role of Islam on the lived experience of 13 Saudi participants diagnosed with autosomal dominant Long QT syndrome (3/13) or who are carriers of Jervell and Lange-Nielsen syndrome (10/13). The interviews investigated how they made sense of living with the condition in light of their religion/spirituality. The data were analyzed using interpretative phenomenological analysis and produced four superordinate themes: 1) Common belief and idiosyncratic interpretation; 2) Using religion to justify positive reframing of current illnesses; 3) Interplay between belief in medicine and in religion; and 4) Complex impact of diagnosis on religiosity. The results show that the participants' idiosyncratic interpretations of the religious principles, not the principles themselves, had an important influence on their coping, medical decision-making, perceptions regarding the cause of their disease, and compliance with medical advice. A novel insight of the current study is that the personal understanding and interpretation of medical information played the greatest role in the decision-making process, and not the religious beliefs. Thus, it is important for health professionals to give patients' information in a manner that is clear and detailed in order for them to facilitate an informed decision, and to ensure that they fully understand the implications.

Psychological Issues in Managing Families with Inherited Cardiovascular Diseases

The field of cardiovascular genetic counseling has evolved dramatically in recent years largely to manage the unique psychological needs of the inherited cardiovascular disease patient population. For many, there can be difficulty in coming to terms with a diagnosis, whether it be adjusting to lifestyle recommendations such as exclusion from competitive sports or living with a small but remarkable risk of sudden cardiac death. For those considered at risk of life-threatening ventricular arrhythmias, the decision to have an implantable cardioverter defibrillator can be difficult. Living with the device, especially for those who are young and those who receive multiple shocks, can precipitate psychological distress and poor adaptation to the device. Family members who experience a sudden cardiac death of a young relative have a significant risk of poor psychological outcomes. The roles of the cardiac genetic counselor in facilitating patients' adaptation to their diagnoses and management and recognizing when additional support from a clinical psychologist is needed are key to ensuring families receive the best possible care.

Understanding the personal and community impact of long QT syndrome: A perspective from Gitxsan women

There is a disproportionately high rate of hereditary long QT syndrome (LQTS) in Northern British Columbia First Nations people, largely due to a novel missense variant in KCNQ1 (p.V205M). The variant has been previously described predisposing those affected to syncope, arrhythmia, and sudden death. Although the biological aspects of LQTS have been explored extensively, less research has been done into the impact of living with a genetic variant that predisposes one to sudden death, and no previous studies have provided cultural insights from a First Nations community. The goal of this study was to explore what facilitates and hinders resiliency and coping for those living with LQTS. Participants were invited to partake in their choice of one-to-one interviews, Photovoice, and Talking Circles. This paper presents the findings from the interview portion of the study. Interviews were recorded, transcribed, and analyzed qualitatively using the systematic text condensation method. Ten women shared their personal experiences of living with LQTS through individual interviews. Half of the women had tested positive for the p.V205M variant, and the other half were awaiting results. In general, learning about a LQTS diagnosis was perceived as traumatic, with gradual acceptance that led to coping. The main factors found to facilitate resiliency and coping were positive family relationships, spirituality, and knowledge about LQTS. The main factors found to hinder resiliency and coping were a poor understanding of the biological or clinical aspects of LQTS, conflicting medical advice (especially regarding physical activity) and LQTS not being taken seriously by social contacts and healthcare providers. It appears that learning to live with LQTS is an ongoing process, requiring balance and interconnectedness between all aspects of well-being.

Pre-Test Probability and Genes and Variants of Uncertain Significance in Familial Long QT Syndrome

The genetics underlying familial long QT syndrome (LQTS) are among the best characterised of all of the inherited heart conditions. Cohort and registry studies have demonstrated important genotype-phenotype correlations that are now essential in guiding clinical practice of patients with the most common three genotypes; KCNQ1 (LQT type 1), KCNH2 (LQT type 2) and SCN5A (LQT type 3). However, the growing number of genes-now more than 16-is confusing, and there is much doubt as to whether many actually cause LQTS at all. Furthermore, changes in sequencing techniques, evolving variant classification criteria and new scientific discoveries make all genes and variants subject to a continuous process of re-classification. This review discusses the nature of variant adjudication, the important concept of pre-test probability in interpreting a genetic result and how the nomenclature of LQTS is shifting in response to this new knowledge. It further discusses the role of deep phenotyping, the inclusion of evaluation of family members in interpreting a genetic test result, or even deciding if genetic testing should occur at all, and the role of specialist multidisciplinary teams to translate this continuously evolving knowledge into the best clinical advice, in partnership with referring cardiologists.

Ethics in genetic counselling

Difficult ethical issues arise for patients and professionals in medical genetics, and often relate to the patient's family or their social context. Tackling these issues requires sensitivity to nuances of communication and a commitment to clarity and consistency. It also benefits from an awareness of different approaches to ethical theory. Many of the ethical problems encountered in genetics relate to tensions between the wishes or interests of different people, sometimes even people who do not (yet) exist or exist as embryos, either in an established pregnancy or in vitro. Concern for the long-term welfare of a child or young person, or possible future children, or for other members of the family, may lead to tensions felt by the patient (client) in genetic counselling. Differences in perspective may also arise between the patient and professional when the latter recommends disclosure of information to relatives and the patient finds that too difficult, or when the professional considers the genetic testing of a child, sought by parents, to be inappropriate. The expectations of a patient's community may also lead to the differences in perspective between patient and counsellor. Recent developments of genetic technology permit genome-wide investigations. These have generated additional and more complex data that amplify and exacerbate some pre-existing ethical problems, including those presented by incidental (additional sought and secondary) findings and the recognition of variants currently of uncertain significance, so that reports of genomic investigations may often be provisional rather than definitive. Experience is being gained with these problems but substantial challenges are likely to persist in the long term.

Psychosocial functioning of parents of children with heart disease-describing the landscape

The aim was to describe the psychological functioning of parents of school-age children with heart disease (HD) in a large-scale, transnational evaluation of parent dyads across the spectrum of cardiac diagnoses and a range of psychosocial domains. Parents of children with HD attending routine out-patient cardiology follow-up visits completed questionnaires assessing their mental health, coping, and family functioning. Parents (1197 mothers and 1053 fathers) of 1214 children (mean age: 12.6 years; S.D. 3.0 years; median time since last surgery: 8.9 years) with congenital or acquired HD from three centers each in the UK and the USA participated (80% response rate). Parents of children with milder HD demonstrated few differences from healthy norms and had significantly lower scores on measures of illness-related stress and post-traumatic stress than parents of children with single ventricle conditions or cardiomyopathy. Parents in these latter two diagnostic sub-groups had significantly higher levels of anxiety and depression than healthy norms but did not differ on other measures of family functioning and coping skills. There were few differences between parents from the UK and the USA. Agreement between mothers and fathers within a dyad was highest for the measure of frequency of illness-related stressors (ICC = 0.67) and lowest for anxiety (ICC = 0.12).Conclusion: Our results suggest two different pathways for the long-term psychological well-being of parents of children with HD: on the one hand, more complex HD is associated with poorer long-term psychosocial outcomes; in contrast, there are also grounds for optimism, particularly for parents of children with less complex conditions, with better psychological outcomes noted for some groups of parents compared to previously reported early psychosocial outcomes. Future work needs to identify factors other than disease severity which might explain poorer (or better) functioning in some parents of children with more complex HD. What is Known: • Parents of children with congenital heart disease report elevated levels of anxiety, depression, and stress after cardiac surgery in infancy. • Maternal mental health problems can have an adverse impact on the psychological adjustment of the child with congenital heart disease. What is New: • Parents of children with milder forms of heart disease do not differ from healthy norms in the longer term and psychological outcomes are better than might be expected from early findings. • More complex diagnoses, particularly functional single ventricle conditions and cardiomyopathy, are associated with poorer long-term psychosocial outcomes for parents.

Recommendations for genetic testing and counselling after sudden cardiac death: practical aspects for Swiss practice

There is a need to standardise, within a coordinated Swiss framework, the practical aspects of genetic testing and genetic counselling on possibly inherited cardiovascular disorders in relatives of a sudden cardiac death (SCD) victim. Because of the major advances in genetic investigation techniques and recent publication of international guidelines in the field of cardiology, genetics and pathology, we consider it important to summarise the current evidence and propose an optimal approach to post-mortem genetic investigation for SCD victims and their families in Switzerland. In this article, we discuss important technical, financial and medico-ethical aspects, and provide updated information on specific situations in which forensic pathologists, general practitioners and cardiologists should suspect a genetic origin of the SCD. At present, the principles of benefit, the duty to warn and the impact of genetic information for family members at risk are considered as strong justifications for post-mortem disclosure and prevail over the arguments of respect for a deceased person’s privacy and confidentiality. This paper underlines also the need to update and improve the general knowledge concerning the genetic risk of cardiovascular pathologies, the importance to perform an autopsy and post-mortem genetic testing in SCD victims, and to develop standardized post-mortem disclosure policy at national and international levels for SCD cases and relatives.

Sudden Cardiac Death in Children and Adolescents

Sudden cardiac death (SCD) is a rare but devastating event in children and adolescents. Etiologies include congenital heart disease, cardiomyopathies, primary arrhythmia syndromes, and miscellaneous conditions. Challenges in the diagnosis and prevention of SCD in the young are reviewed.

Minding the Genes: a Multidisciplinary Approach towards Genetic Assessment of Cardiovascular Disease

Genetic assessment for inherited cardiovascular disease (CVD) is increasingly available, due in part to rapid innovations in genetic sequencing technologies. While genetic testing is aimed at reducing uncertainty, it also produces awareness of potential medical conditions and can leave patients feeling uncertain about their risk, especially if there are ambiguous results. This uncertainty can produce psychological distress for patients and their families undergoing the assessment process. Additionally, patients may experience psychological distress related to living with inherited CVD. In order to more effectively manage the psychosocial challenges related to genetic assessment for CVD, a multidisciplinary model expanded to include psychologists and other allied health professionals is outlined. A case study is provided to illustrate how psychological distress can manifest in a patient living with inherited CVD, as well as proposed psychological management of this patient. Finally, a guide for genetic counselors is provided to aid in identifying and managing common psychological reactions to genetic assessment for CVD.

Quality of Life of Pediatric Patients With Long QT Syndrome

Children with long QT syndrome (LQTS) live with the risk of sudden death, activity restrictions, and the need for daily medications. We sought to evaluate the quality of life (QOL), self-perception, and behavior of patients with LQTS as perceived by both patients and their parents and identify predictors of lower QOL. QOL (Pediatric QOL Inventory [PedsQL] and Pediatric Cardiac Quality of Life Inventory [PCQLI]), self-perception, and behavioral inventories were completed by patients with LQTS and their parents. Comparison of PedsQL scores was made to published data for healthy children using t tests, and PCQLI scores were compared with those of patients with differing complexity of congenital heart disease. Mixed modeling was used for multivariable analysis. Sixty-one patients with LQTS were evaluated (age 13.6 ± 3.0 years; male 49%). Compared with healthy children, the PedsQL Total, Psychosocial, and Physical Health Summary scores were significantly lower for patients with LQTS and parent proxy reports (p ≤0.001). In general, PCQLI scores of patients with LQTS and parents were similar to those of patients with tetralogy of Fallot (p ≥0.2), lower than those of patients with bicuspid aortic valve (p ≤0.02), and higher than those of patients with single ventricle (p ≤0.03). Lower patient and parent PCQLI scores were associated with internalizing problems. For parents, the presence of a cardiac device and medication side effects were additionally associated with lower PCQLI scores. In conclusion, patients with LQTS and their parents report lower QOL than normal children secondary to physical and psychosocial factors. Increasing focus on the psychological well-being of these patients is needed in an effort to improve their QOL.

LQTS parents' reflections about genetic risk knowledge and their need to know or not to know their children's carrier status

Long QT syndrome (LQTS) is a contributor to unexplained deaths in infants (SIDS), children, teenagers and young adults. A gene test result may allow for individual tailored treatment, but also pose a burden of knowing one's carrier status, with no treatment recommendation. Genetic risk knowledge in the case of LQTS can promote adjustment and coping, but also fear anxiety, ambivalence and moral dilemmas. This makes it challenging to respect both the right to know and the right not to know. The purpose of this study was to explore LQTS parents' perception of genetic knowledge, and their need to know or not to know about their children's carrier status. Qualitative, semi structured interviews were conducted with thirteen parents of LQTS-children. Results show that parents found it important to know the result of a gene test for LQTS including their children's carrier status. The risk was framed and incorporated into their everyday life and their life perspectives. Pertinent moral dilemmas concerned information disclosure to children and relatives. Parents thought that early and gradual disclosure to children would promote coping. Parents' moral dilemmas were rarely addressed during encounters with healthcare providers. The participants had several suggestions for improvement in that regard.

Experiences, considerations and emotions relating to cardiogenetic evaluation in relatives of young sudden cardiac death victims

Relatives of young sudden cardiac death (SCD) victims are at increased risk of carrying a potentially fatal inherited cardiac disease. Hence, it is recommended to perform an autopsy on the victim and to refer his or her relatives to a cardiogenetics clinic for a full evaluation to identify those at risk and allow preventive measures to be taken. However, at present, the number of families attending a cardiogenetics clinic after the SCD of a young relative is low in the Netherlands. We performed a qualitative study and report on the experiences and attitudes of first-degree relatives who attended a cardiogenetics clinic for evaluation. In total, we interviewed nine first-degree relatives and one spouse of seven SCD victims about their experiences, considerations and emotions before attendance and at the first stage of the cardiogenetic evaluation before DNA results were available. Interviews were transcribed verbatim and analysed. Medical professionals did not have an important role in informing or referring relatives to a cardiogenetics clinic. Importantly, all participants indicated that they would have appreciated a more directive approach from medical professionals, because their mourning process hampered their own search for information and decision-making. A need to understand the cause of death and wanting to prevent another SCD event occurring in the family were the most important reasons for attending a clinic. There are possibilities to improve the information process and better support their decision-making. The multidisciplinary cardiogenetic evaluation was appreciated, but could be improved by minor changes in the way it is implemented.

Family-based associations in measures of psychological distress and quality of life in a cardiac screening clinic for inheritable cardiac diseases: a cross-sectional study

BACKGROUND

Family-based cardiac screening programmes for persons at risk for genetic cardiac diseases are now recommended. However, the psychological wellbeing and health related quality of life (QoL) of such screened patients is poorly understood, especially in younger patients. We sought to examine wellbeing and QoL in a representative group of adults aged 16 and over in a dedicated family cardiac screening clinic.

METHODS

Prospective survey of consecutive consenting patients attending a cardiac screening clinic, over a 12 month period. Data were collected using two health measurement tools: the Short Form 12 (version 2) and the Hospital Anxiety and Depression Scale (HADS), along with baseline demographic and screening visit-related data. The HADS and SF-12v.2 outcomes were compared by age group. Associations with a higher HADS score were examined using logistic regression, with multi-level modelling used to account for the family-based structure of the data.

RESULTS

There was a study response rate of 86.6%, with n=334 patients providing valid HADS data (valid response rate 79.5%), and data on n=316 retained for analysis. One-fifth of patients were aged under 25 (n=61). Younger patients were less likely than older to describe significant depression on their HADS scale (p<0.0001), although there were overall no difference between the prevalence of a significant HADS score between the younger and older age groups (18.0% vs 20.0%, p=0.73). Significant positive associates of a higher HADS score were having lower educational attainment, being single or separated, and being closely related to the family proband. Between-family variance in anxiety and depression scores was greater than within-family variance.

CONCLUSIONS

High levels of anxiety were seen amongst patients attending a family-based cardiac screening clinic.Younger patients also had high rates of clinically significant anxiety. Higher levels of anxiety and depression tends to run in families, and this has implications for family screening and intervention programmes.

The experience of being diagnosed with hypertrophic cardiomyopathy through family screening in childhood and adolescence

AIM

To describe the experiences of children and adolescents being screened positive for hypertrophic cardiomyopathy and how this impacts their daily life.

BACKGROUND

Hypertrophic cardiomyopathy is a hereditary disease and the most common medical cause of sudden death in childhood and adolescence. This is the reason for recommending screening in children with an affected first-degree relative. A diagnosis of hypertrophic cardiomyopathy implies lifestyle modifications, restrictions that may bring profound changes to the daily life of the affected individual.

DESIGN

This is a descriptive qualitative interview study.

METHODS

We interviewed 13 asymptomatic children or adolescents diagnosed with hypertrophic cardiomyopathy through family screening 12-24 months after the diagnosis. Analysis was conducted with qualitative content analysis.

RESULTS

Children described an involuntary change, which affected their daily life with limitations and restrictions in life, both in the individual and social context. Lifestyle recommendations had the most severe impact on daily life and affected their social context. They tried to navigate in a world with new references, and after reorientation they felt hope and had faith in the future.

CONCLUSIONS

Children diagnosed with hypertrophic cardiomyopathy through family screening went through an involuntary change resulting in limitations and restrictions in life. This study indicates that there is a need for support and that healthcare professionals have to consider the specific needs in these families. Our findings thus give guidance in how best to improve support to the patients and their family. Diagnosis in asymptomatic children should be accompanied by ideally multi-professional follow-up, focusing not only on medical issues.

Reproductive Decision Making and Genetic Predisposition to Sudden Cardiac Death

BACKGROUND: With current genetic technology, it is possible to detect mutations associated with long QT syndrome (LQTS), a hereditary cardiac arrhythmia syndrome. As a result, prospective parents diagnosed with LQTS will have to decide whether or not to prevent its transmission to future generations, either by not procreating or through the use of assisted reproductive technologies or prenatal testing. This paper explores how a hereditary predisposition to sudden cardiac death can influence reproductive decision making. METHODS: This study draws from interviews and focus groups with individuals who have personal or family histories of cardiac arrhythmia or sudden death. A keyword search was conducted on interview transcripts to identify quotes for analysis. RESULTS: Participants expressed complex, often ambivalent attitudes about the prospect of having a child with a predisposition to sudden cardiac death. Their comments reveal conflicting understandings of genetic responsibility and reflect the variable effects of personal experience on reproductive decision making. This paper compares attitudes towards LQTS and other genetic conditions in analyzing the themes that emerged in interviews and focus groups. CONCLUSIONS: The "disability critique" of prenatal testing should be applied carefully to a context of genetic predisposition to sudden cardiac death in order to understand reproductive decision making. Firsthand experience with the condition, among other factors, can weigh heavily in those decisions.

General anxiety, depression, and physical health in relation to symptoms of heart-focused anxiety- a cross sectional study among patients living with the risk of serious arrhythmias and sudden cardiac death

Objective

To investigate the role of three distinct symptoms of heart-focused anxiety (cardio-protective avoidance, heart-focused attention, and fear about heart sensations) in relation to general anxiety, depression and physical health in patients referred to specialized cardio-genetics outpatient clinics in Norway for genetic investigation and counseling.

Methods

Participants were 126 patients (mean age 45 years, 53.5% women). All patients were at higher risk than the average person for serious arrhythmias and sudden cardiac death (SCD) because of a personal or a family history of an inherited cardiac disorder (familial long QT syndrome or hypertrophic cardiomyopathy). Patients filled in, Hospital Anxiety and Depression Scale, Short-Form 36 Health Survey, and Cardiac Anxiety Questionnaire, two weeks before the scheduled counseling session.

Results

The patients experienced higher levels of general anxiety than expected in the general population (mean difference 1.1 (p < 0.01)). Hierarchical regression analyses showed that avoidance and fear was independently related to general anxiety, depression, and physical health beyond relevant demographic covariates (age, gender, having children) and clinical variables (clinical diagnosis, and a recent SCD in the family). In addition to heart-focused anxiety, having a clinical diagnosis was of importance for physical health, whereas a recent SCD in the family was independently related to general anxiety and depression, regardless of disease status.

Conclusion

Avoidance and fear may be potentially modifiable symptoms. Because these distinct symptoms may have important roles in determining general anxiety, depression and physical health in at-risk individuals of inherited cardiac disorders, the present findings may have implications for the further development of genetic counseling for this patient group.

Constructing "best interests": genetic testing of children in families with hypertrophic cardiomyopathy

Professional guidelines on genetic testing of children have recently shifted their focus from protecting the child's autonomous choice to professionals, together with parents, striving to work in the child's "best interest." This notion of "best interest" allows room for therapeutical as well as psychological and social considerations, and gives rise to the question how parents and professionals weigh up the child's best interest in practice. In this qualitative study, we followed six extended families involved in genetic testing for hypertrophic cardiomyopathy in the Netherlands for 3½ years. In total 57 members of these families were interviewed in depth; many of them more than once. Our empirical analysis shows that the best interest of a child is constructed via long-term processes in the broader context of family and kin. In this context, "best interests" are considered and reconsidered. We conclude that a child's best interest should not be framed as the result of an instantaneous agreement between parents and professionals. In dealing with genetic testing of children, parents as well as professionals reflect on and learn from the processes of generating new meanings of "best interest." To enable professionals to deal with the variety in family life, these learning processes should be documented closely.

Parents' experiences of having an asymptomatic child diagnosed with hypertrophic cardiomyopathy through family screening

BACKGROUND

Hypertrophic cardiomyopathy is hereditary and the commonest medical cause of sudden death in childhood and adolescence, which is the reason for recommending screening in children with an affected parent. A diagnosis of hypertrophic cardiomyopathy implies lifestyle modifications, restrictions that may bring profound changes to the affected individual and impacts on the whole family.

OBJECTIVE

To describe parents' experiences of how the diagnosis of hypertrophic cardiomyopathy in their child affects daily life.

METHOD

Twelve parents with asymptomatic children diagnosed with hypertrophic cardiomyopathy through family screening were interviewed 12-24 months after the diagnosis. Analysis was conducted with qualitative content analysis.

RESULTS

Parents described the immediate reaction of shock, grief, and injustice but were also grateful that the child was still asymptomatic. The diagnosis caused a significant change in lifestyle for most families due mainly to restrictions of sports activities. Parents had to adapt to the new life and develop strategies to protect their child. Death became a reality causing feelings of vulnerability. Regular medical check-ups and access to the liaison nurse were described as important factors of reassurance.

CONCLUSIONS

Parents experienced early diagnosis as positive in a long-term perspective. The main changes perceived were ascribed to lifestyle modifications. Parents with athletic children experienced the lifestyle modifications as more severe. They strived to create a new life where they could feel secure and have faith in the future, and emphasised the need of regular follow-up and support from health care professionals as "mental pain relief", which helped them achieve a new state of normality.

Health status in patients at risk of inherited arrhythmias and sudden unexpected death compared to the general population

Background

The possibilities in the molecular genetics of long QT syndrome (LQTS) and hypertrophic cardiomyopathy (HCM) has made family screening, with diagnostic and predictive genetic testing part of the health care offer in genetic counselling of inherited arrhythmias, potentially affecting the subjective health among these individuals. The study compared health status among patients at risk of arrhythmia because of family history or clinical diagnosis of LQTS and HCM with reference health status scores of the general population.

Methods

In the period 2005-2007, 127 patients (mean age 45 years, 53.5% women), with a family history of arrhythmia (n = 95) or a clinical diagnosis of LQTS (n = 12) or HCM (n = 19) referred for genetic counselling at the medical genetic departments in Norway filled in a questionnaire (Short Form Health Survey SF-36) measuring health status on eight domains. The patient SF-36 scores were compared to expected scores of the general population by t-test, and the relationship between the socio-demographic variables, clinical status, and SF-36 domains were analysed by multiple linear regression.

Results

The total sample reported significant lower SF-36 score as compared to the general population scores for the domain of general health (mean difference -7.3 (<0.001). When analysing the sample in subgroups according to clinical status, the general health was still significant lower for the group of family risk and in the group of HCM. In addition the physical functioning, role physical, vitality and role emotional domains were reduced for the latter group. In general, employment, higher education and being referred to genetic counselling through a family member were associated with better scores on the health status domains.

Conclusions

Having a genetic risk of arrhythmia affects general health significantly. In addition, patients with a clinical diagnosis of HCM demonstrate a significantly poorer health in both physical and mental domains.

Predictive genetic testing for cardiovascular diseases: impact on carrier children

We studied the experiences of children identified by family screening who were found to be a mutation carrier for a genetic cardiovascular disease (Long QT Syndrome (LQTS), Hypertrophic Cardiomyopathy (HCM), Familial Hypercholesterolemia (FH)). We addressed the (a) manner in which they perceive their carrier status, (b) impact on their daily lives, and (c) strategy used to cope with these consequences. Children (aged 8-18) who tested positive for LQTS (n=11), HCM (n=6) or FH (n=16), and their parents participated in semi-structured audiotaped interviews. Interview topics included illness perception, use of medication, lifestyle modifications, worries, and coping. Each interview was coded by two researchers. The qualitative analysis was guided by Leventhal's model of self-regulation. The children were overall quite articulate about the disease they were tested for, including its mode of inheritance. They expressed positive future health perceptions, but feelings of controllability varied. Adherence and side-effects were significant themes with regard to medication-use. Refraining from activities and maintaining a non-fat diet were themes concerning lifestyle modifications. Some children spontaneously reported worries about the possibility of dying and frustration about being different from peers. Children coped with these worries by expressing faith in the effectiveness of medication, trying to be similar to peers or, in contrast, emphasizing their "being different." Children generally appeared effective in the way they coped with their carrier status and its implications. Nevertheless, dealing with the daily implications of their condition remains difficult in some situations, warranting continued availability of psychosocial support.

Comparing test-specific distress of susceptibility versus deterministic genetic testing for Alzheimer's disease

BACKGROUND

Genetic risk for Alzheimer's disease (AD) can be conferred by the susceptibility polymorphism apolipoprotein E (APOE), where the epsilon 4 allele increases the risk of developing late-onset AD but is not a definitive predictor of the disease, or by autosomal dominant mutations (eg, the presenilins), which almost inevitably result in early-onset familial AD. The purpose of this study was to compare the psychological impact of using these two different types of genetic information to disclose genetic risk for AD to family members of affected patients.

METHODS

Data were compared from two separate protocols. The Risk Evaluation and Education for Alzheimer's Disease (REVEAL) Study is a randomized, multi-site clinical trial that evaluated the impact of susceptibility testing for AD with APOE in 101 adult children of AD patients. A separate study, conducted at the University of Washington, assessed the impact of deterministic genetic testing by disclosing presenilin-1, presenilin-2, or TAU genotype to 22 individuals at risk for familial AD or frontotemporal dementia. In both protocols, participants received genetic counseling and completed the impact of event scale (IES), a measure of test-specific distress. Scores were analyzed at the time point closest to 1 year after disclosure at which IES data were available. The role of genetic test result (positive vs negative) and type of genetic testing (deterministic vs susceptibility) in predicting log-transformed IES scores were assessed with linear regression, controlling for age, gender, and time from disclosure.

RESULTS

Subjects from the REVEAL Study who learned that they were positive for the susceptibility gene APOE epsilon 4+ experienced similar, low levels of test-specific distress compared with those who received positive results of deterministic testing in the University of Washington study (P = .78). APOE epsilon 4+ individuals in the susceptibility protocol experienced more test-specific distress than those who tested epsilon 4- in the same study (P = .04); however, among those receiving deterministic test disclosure, the subjects who received positive results did not experience significantly higher levels of distress when compared with those who received negative results (P = .88).

CONCLUSIONS

The findings of this preliminary study, with limited sample size, suggest that the test-related distress experienced by those receiving positive results for a deterministic mutation is similar to the distress experienced by those receiving positive results from genetic susceptibility testing, and that the majority of participants receiving genotype disclosure do not experience clinically significant distress as indicated by IES scores 1 year after learning of their test results.

Living with long QT syndrome: a qualitative study of coping with increased risk of sudden cardiac death

Long QT syndrome (LQTS) is a congenital disorder associated with increased risk of sudden cardiac death; LQTS patients and their families are offered diagnostic or predictive genetic testing. The purpose of this qualitative study was to investigate the psychosocial aspects of living with LQTS, to identify LQTS patients' daily life challenges and coping strategies, and to describe their experiences with healthcare services. In-depth interviews were conducted with seven individuals who had been tested for long QT genetic mutation. Four of these participants had an implantable cardiac defibrillator (ICD). The participants reported that early and gradually acquired knowledge of the syndrome was an advantage. They also reported experiencing worries and limitations in daily life, but their main concern was for their children or grandchildren. Healthcare providers' minimal knowledge of LQTS resulted in uncertainty, misinformation, and even wrong advice regarding treatment. The results suggest that regional centers, with the appropriate expertise, should investigate and counsel LQTS patients and their families.

Fears and anxiety in children with long-QT syndrome compared to children with asthma

OBJECTIVE

To compare children with asthma to children with long-QT syndrome (LQTS) in terms of anxiety and medical fears.

METHOD

Forty children (25 males/15 females) with asthma and their mothers participated, along with seven children with LQTS (four males/three females) and their mothers.

RESULTS

Children with asthma had significantly more medical fears, fear of danger/death, and fear of minor injury and small animals compared to children with LQTS. Children with LQTS tended to have more fear of failure and criticism, and tended to keep their feelings to themselves and minimize their real feelings of anxiety. Children with LQTS had significantly more internalizing problems, and their mothers had significantly higher anxiety.

CONCLUSION

Fear and uncertainty can be overwhelming in LQTS. Children with LQTS do not seem to be able to share their feelings openly. Examining the psychosocial adjustment of affected children may assist professionals to help families to cope more effectively.

Cardiovascular genetic medicine: evolving concepts, rationale, and implementation

Cardiovascular genetic medicine is devoted to the identification and understanding of cardiac conditions resulting from genetic and genomic mechanisms and to the development and validation of diagnostic and treatment algorithms and guidelines. Cardiovascular genetic medicine clinics now provide expert cardiovascular subspecialty care, genetic counseling and clinical genetic testing, and will eventually provide disease-specific gene or genetic therapies. Currently, the most tractable diagnoses for cardiovascular genetic medicine are the single-gene disorders: the cardiomyopathies, the channelopathies, and others. The recent explosion of genetic knowledge within the single-gene disorders and consequent rapid proliferation of genetic testing enables far greater numbers of individuals to directly benefit from this progress. A compelling rationale exists for this approach: cardiovascular single-gene diseases commonly present with life-threatening events (e.g., sudden cardiac death, heart failure, stroke, etc.), but identification, evaluation, and treatment of individuals with presymptomatic genetic risk has the promise to prevent or ameliorate cardiovascular morbidity and mortality. Cardiovascular genetic medicine programs also anchor training and research, thereby enabling the next generation of academic specialists in cardiovascular genetic medicine to continue to improve cardiovascular health.

Health-related quality of life of children with a positive carrier status for inherited cardiovascular diseases

Familial hypercholesterolemia, hypertrophic cardiomyopathy, and long QT Syndrome are genetic cardiovascular conditions which may lead to sudden cardiac death at a young age. Preventive measures include lifestyle modifications, medications, and/or cardiac devices. Hence, identification of carrier children can protect them for the potentially life threatening consequences at a young age. Yet, informing children about their genetic risk status and subjecting them to treatment may have negative consequences. This preliminary study aimed to explore (1) how the health-related quality of life of carrier children compares to the quality of life of Dutch children in general; and (2) to what extent the carrier children's quality of life and their parents' perception thereof concur. Our method involved carrier children (n = 35), aged between 8 and 18 years, and their parents (n = 37) who completed a self-report questionnaire. Children's health-related quality of life was assessed with a children and parent version of the KIDSCREEN. Dutch reference data were available from a representative national sample. Our results show no statistically significant differences in scores between carrier children and the reference group. Also, no differences were found between carrier children and their parents' ratings, with the exception of the scale "psychological well being". Parents rated their child's psychological well being significantly lower. We identified no problems with the well-being of carrier children as compared to a representative sample of peers. This may offer some initial reassurance to those who have concerns about the implications of genetically testing children for one of these cardiovascular conditions. Yet, attention to possible problems in these children remains warranted.

Inherited Arrhythmia Syndromes

Inherited cardiac arrhythmia syndromes have received a lot of attention in recent years, particularly the molecular genetic basis, which has been unraveled to a great extent in the past years. Disease entities have been subdivided based on their causal gene defect, which, indeed, has been shown to impact on disease expression, clinical characteristics, prognosis and treatment. This particularly holds for the long QT syndrome. Studies in other, more recently described, disease entities, such as Brugada syndrome, catecholaminergic polymorphic ventricular arrhythmias and the short QT syndrome, are ongoing. For some of them the heterogenetic nature has just very recently been established. For these reasons, genetic testing has been introduced to clinical practice in several countries, which enables timely treatment of affected individuals and reassurance of those not inheriting the causal gene defect. Presymptomatic testing, however, is not without drawbacks. Psychosocial studies are needed in this field and should be promoted. It is likely that this development will further increase the knowledge of the (patho-) physiology of these disease entities, but also of more common arrhythmia syndromes.

Congenital long QT syndromes: clinical features, molecular genetics and genetic testing

Congenital long QT syndrome (LQTS) is a primary electrical disease characterized by a prolonged QT interval in the surface electrocardiogram and increased predisposition to a typical polymorphic ventricular tachycardia, termed Torsade de Pointes. Most patients with LQTS are asymptomatic and are diagnosed incidentally based on an electrocardiogram. Symptomatic patients may suffer from severe cardiac events, such as syncope and/or sudden cardiac death. Autosomal dominant forms are caused by heterozygous mutations in genes encoding the components of the ion channels. The autosomal recessive form with congenital deafness is also known as Jervell and Lang-Nielsen syndrome. It is caused by homozygous mutations or certain compound heterozygous mutations. Depending on the genetic defects, there are differences in the age of onset, severity of symptoms, and number of cardiac events and event triggers. With advances in gene technology, it is now feasible to perform genetic testing for LQTS, especially for those with family history. Identification of the mutation will lead to better management of symptoms and more targeted treatment, depending on the underlying genetic defect, resulting in a reduction of mortality and cardiac events.