Symptom burden guiding invasive electrophysiological study in paroxysmal supraventricular tachycardia: The believe SVT registry

BACKGROUND AND OBJECTIVE

Patients with palpitations clinically suggestive of paroxysmal supraventricular tachycardia (PSVT) are often managed conservatively until ECG-documentation of the tachycardia, leading to high impact on life quality and healthcare resource utilization. We evaluated results of electrophysiological study (EPS), and ablation when appropriate, among these patients, with special focus on gender differences in management.

METHODS

BELIEVE SVT is a European multicenter, retrospective registry in tertiary hospitals performing EPS in patients with palpitations, without ECG-documentation of tachycardia or preexcitation, and considered highly suggestive of PSVT by a cardiologist or cardiac electrophysiologist. We analyzed clinical characteristics, results of EPS and ablation, complications, and clinical outcomes during follow-up.

RESULTS

Six-hundred eighty patients from 20 centers were included. EPS showed sustained tachycardia in 60.9% of patients, and substrate potentially enabling AVNRT in 14.7%. No major/permanent complications occurred. Minor/transient complications were reported in 0.84% of patients undergoing diagnostic-only EPS and 1.8% when followed by ablation. During a 3.4-year follow-up, 76.2% of patients remained free of palpitations recurrence. Ablation (OR: 0.34, P < .01) and male gender (OR: 0.58, P = .01) predicted no recurrence. Despite a higher female proportion among patients with recurrence, (77.2% vs 63.5% among those asymptomatic during follow-up, P < .01), 73% of women in this study reported no recurrence of palpitations after EPS.

CONCLUSIONS

EPS and ablation are safe and effective in preventing recurrence of nondocumented palpitations clinically suggestive of PSVT. Despite a lower efficacy, this strategy is also highly effective among women and warrants no gender differences in management.

Health care centre and emergency department utilization by patients with episodes of tachycardia

Background

Outpatients seek to visit health care facilities for episodes of tachycardia-related signs and symptoms. The challenge for physicians is to balance a proper initial assessment and avoid overlooking a possible arrhythmia. This common clinical situation affects individuals and health care utilization, and effective management may substantially affect health care resources. This study aimed to explore health care utilization for outpatients with episodes of tachycardia visiting health care centres (HCCs) and/or emergency departments (EDs).

Method

This retrospective study used data of adult outpatients (≥ 18 years) who were assessed by a physician as having a specific or nonspecific diagnosis of arrhythmia between 2017 and 2018, and data were retrieved from medical records and a regional registry database. Data was analysed with appropriate statistical analyses to identify disparities between sex, age and terms of search pattern for each health care facility. Analysis of variance was used to test disparities between the sexes, and one-factor ANOVA was used for the incidence of missed arrhythmias.

Results

A total of 2719 visits with 2373 outpatients were included in the study. The result showed a significant difference in the total number of visits (n = 2719) between female and male patients (68% vs. 32%, p < .001). In the 60–69- and 70–79-year age groups, females had significantly higher frequencies of visits than males (p = .018). A significant difference was also observed between sexes in terms of which health care facility they tended to visit (p < .001). Ninety-five percent of the outpatients visiting EDs were hospitalized. When estimating the incidence of missed arrhythmias (diagnoses) in relation to assessments, the results showed a 5% missed diagnosis involving potential atrioventricular nodal re-entry tachycardia and atrioventricular re-entry tachycardia. Moreover, the referral rate was low, especially from HCCs to cardiologists.

Conclusions

This study shows a significant difference in total visits in HCCs and/or EDs by patients of different sexes and indicates the need for improved care for outpatients with episodes of tachycardia. Sex- and age-related differences must be addressed with an aim of providing equal care. Finally, the low rate of referral from HCCs to cardiologists compared to the high proportion of hospitalizations from EDs, deserves further investigation.

Patients' Experiences of Living with Atrial Fibrillation: A Mixed Methods Study

INTRODUCTION

Awareness of epidemiological and clinical consequences of atrial fibrillation (AF) has increased, as have disease-related costs. Less attention has been paid to patient-related issues, such as understanding how symptoms, different therapies, and lifestyle adjustments affect daily life. We aimed to describe patients' experiences of living with AF.

METHODS

The study design used a parallel convergent mixed methods approach. Patients with AF were included in the SMURF study and referred for catheter ablation. Patients completed questionnaires on symptoms, health-related quality of life, depression, anxiety, and perceived control and were interviewed. The datasets were analysed separately using inductive content analysis and descriptive statistics. Data were merged to obtain a final interpretation.

RESULTS

Nineteen patients were interviewed and 18 completed questionnaires. Twelve of the patients were male, mean age 60 years (45-75 years). Inductive qualitative analysis revealed three categories: (i) symptoms and concerns limiting life, (ii) dimensions of worries, and (iii) strategies for management. The most common symptoms were tiredness, weakness/fatigue, and breathlessness during activities, and the most pronounced negative impacts on health-related quality of life (HRQOL) were physically related, shown in the ASTA questionnaire. The most negative SF-36 scores were found in role limitations due to physical health problems and vitality. HADS revealed five patients with some degree of anxiety and four with some degree of depression. Patients had lower scores on perceived control than perceived helplessness in CAS. Patients' perceived control was higher than their families', and families experienced more helplessness.

CONCLUSIONS

The mixed methods design deepens our understanding of challenges faced by patients. Patients experienced a limited ability to perform activities of daily living due to AF which created different kinds of worries that encouraged the use of various strategies to manage their lives. Healthcare providers need to be aware that relationships between patients and their relatives can change, and therefore they need to be supported and integrated into the care system.

Impact of Radiofrequency Ablation and Antiarrhythmic Medications on the Quality of Life of Patients with Supraventricular Tachycardias: Preliminary Validation of the Greek Version of the Umea22 (U22) Questionnaire

Objective

This study aims to (i) translate, culturally adapt, and preliminarily validate the arrhythmia-specific Umea22 (U22) questionnaire and (ii) assess the impact of radiofrequency (RF) ablation and medical treatment on the quality of life of patients with supraventricular tachycardias (SVTs).

Methods

A total of 140 patients with atrioventricular nodal re-entry tachycardia (AVNRT) and atrioventricular re-entry tachycardia (AVRT) were enrolled in the study. Of these, 100 patients underwent RF ablation (group A) and 40 patients were managed with antiarrhythmic medications (group B). Health-related quality of life (HRQoL) was assessed for both groups using the Short Form-36 Health Survey (SF-36) and the arrhythmia-specific Umea22 (U22) questionnaire at baseline and 3-month follow-up. Exploratory and confirmatory factor analyses were performed to assess the validity of the U22 questionnaire. Univariate comparisons of HRQoL scores between study timepoints and multivariate regression analyses adjusting for baseline confounders were conducted.

Results

The factor analysis of the U22 questionnaire yielded a six-factor model (“burden of spells”; “heart contractility”; “character of spells”; “general/non-specific feeling”; “other specific somatic symptoms”; “fear”) with acceptable fit results. Patients of group A showed significant improvement in all SF-36 and U22 scores at 3 months' follow-up compared to baseline (all p<0.05). Patients of group B presented deterioration of the total SF-36 score (p=0.001) and improvement of certain U22 measures, namely, well-being (p=0.004), heartbeat speed, and intensity during arrhythmia spells (p<0.0001 for both measures) at 3 months' follow-up, compared to baseline. Employment status, male sex, and urban residence emerged as important predictors.

Conclusion

The Greek version of the U22 questionnaire is a valid tool to assess SVT-related symptoms. RF ablation appears to exert more pronounced beneficial outcomes on HRQoL of patients with SVTs compared to medical treatment. Prompt referral of patients with SVTs to specialist centers may favorably affect their quality of life and should be encouraged.

Evaluation of medical and psychological parameters of quality of life in supraventricular tachyarrhythmia children. A comparison with healthy children

INTRODUCTION

There are only a few available studies evaluating quality of life (QoL) in pediatric patients with cardiac arrhythmia. The aim of the study was to evaluate medical and psychological parameters of the QoL in children with a diagnosed supraventricular tachyarrhythmia (SVT) and to compare the obtained data with a group of healthy children (HC).

MATERIAL AND METHODS

Inclusion criteria: children aged 7-18 with SVT, treated at Poznan University of Medical Sciences, Department of Pediatric Cardiology. The evaluation tools were the WHOQOL-BREF instrument and a questionnaire related to the patient's feelings and observations concerning arrhythmia (Pediatric Arrhythmia Related Score - PARS), developed by the authors and adjusted to the group of arrhythmia patients.

RESULTS

The study included 180 SVT children and 83 HC. On the basis of WHOQOL-BREF the SVT group was found to have lower assessment values of QoL within the physical domain (Phd) (mean ± SD: 65.7 ±15.8 vs. 81.6 ±12.8; p < 0.0001) and psychological domain (Psd) (mean ± SD: 75.8 ±15.2 vs. 81.3 ±14.1; p < 0.005). No significant differences were found within the social relationships domain or the environment domain. On the basis of PARS in the SVT group the patients reported significantly increased symptoms within Phd (mean ± SD: 2.3 ±0.7 vs. 1.6 ± 0.3; p < 0.0001) as well as increased negative feelings within Psd (mean ± SD: 2.3 ±0.7 vs. 2.1 ± 0.6; p < 0.005).

CONCLUSIONS

Medical and psychological parameters of the QoL in SVT children are significantly lower in comparison with HC. A diagnosis of SVT has no influence on the social and environmental areas of QoL. The PARS appears to be a useful tool to supplement the generic questionnaire for QoL evaluation in SVT children.

Patient's age rather than severity of the arrhythmia influences the cost of medical treatment of atrioventricular nodal or atrioventricular reciprocating tachycardia

Purpose

Radiofrequency ablation (RFA) is considered the treatment of choice in cases of atrioventricular nodal reciprocating tachycardia (AVNRT) and atrioventricular reciprocating tachycardia (AVRT). Published studies suggest a considerable time gap between the onset of the arrhythmia, correct diagnosis, and RFA which may reach 10–15 years. The cost of medical treatment during that period may be substantial. The aim of the study was to calculate the annual direct medical cost of medical treatment of patients with AVNRT and AVRT and identify potential factors influencing this cost.

Methods

Based on the consumption of particular resources and the unit costs of services in 2013, we calculated the annual direct medical cost of care for patients with AVNRT and AVRT in Poland. We adopted the public payer’s and societal perspectives. Data on health resources was collected with a structured questionnaire and medical records of patients scheduled for RFA. Additional analyses were performed to identify factors influencing this cost.

Results

We enrolled 82 patients: mean age 43.9 ± 14.1 years old and mean symptom duration before the RFA 13.0 ± 11.3 years. The median annual cost of medical treatment was 546 USD [312–957], 411 € [278–786], and 616 USD [369–1044], 464 € [235–721], for the public payer and the common perspective, respectively, with hospitalizations being the main cost component. In multivariate analysis, only the age of the patient significantly influenced this cost.

Conclusions

The annual cost of medical treatment of AVNRT or AVRT is substantial and dependent on the age of the patient rather than the severity of the arrhythmia (NCT01594814).

Impact on a Person’s Daily Life During Episodes of Supraventricular Tachycardia

Purpose: To describe the impact of episodes of supraventricular tachycardia (SVT) on a person’s daily life from a holistic perspective. Method: A deductive descriptive design was used. Twenty semistructured interviews (12 women and 8 men) were conducted before planned ablation of SVT and were analyzed using qualitative content analysis. Results: Living with SVT had a complex impact on daily life. Initially, the patients described an inhibited existence due to demands to give up things that they had previously been doing, in case the unpredictable episodes of SVT would occur. The episodes caused fatigue and worry, which together created a barrier for living life to the full by making the person give up undertakings. The patients constantly needed to find short-term and long-term strategies to prevent new episodes from happening. Conclusion: Episodes of SVT entail a complex life situation as the person’s entire existence is affected in daily life. To understand the impact of SVT on daily life, nurses and other health care professionals need increased knowledge and understanding to be able to provide support through relevant information and take optimal care measures.

Assessment of the neutrophil/lymphocyte ratio in patients with supraventricular tachycardia

OBJECTIVE

The neutrophil/lymphocyte ratio (NLR) has been evaluated as a new predictor of cardiovascular risk. Inflammation has been shown to be associated with various arrhythmias including supraventricular tachycardias (SVTs). In this study, we aimed to investigate the relation between NLR and SVT in patients with a documented atrial tachyarrhythmia.

METHODS

The study used a retrospective cross-sectional design. Patients who had SVT but were otherwise healthy were included. The exclusion criteria included drug use (except antiarrhythmic agents), morbid obesity, acute or chronic infection, inflammatory diseases, systemic diseases, and cancer. Total and differential leukocyte counts and routine biochemical tests were performed before the ablation procedure.

RESULTS

The study included 150 patients with SVT and 98 healthy controls. The biochemical and hematological parameters were comparable between the groups, except neutrophil and lymphocyte counts. The neutrophil count was significantly higher (4.7±1.5x103/µL versus 4.1±1.0x103/µL; p<0.001) and lymphocyte count was significantly lower (2.2±0.6x103/µL versus 2.5±0.6x103/µL; p=0.001) in the SVT group than in the control group. As a result, the SVT group had significantly higher NLR values than the control group (2.2±0.9 versus 1.7±0.5; p<0.001). In addition, NLR values were higher in patients in whom tachycardia was induced during an electrophysiological study (EPS) (2.3±0.9 versus 2.0±0.8; p=0.02). The association between NLR and SVT remained significant after multivariate analysis (odds ratio: 1.5, 95% confidence interval: 1.001-2.263, p=0.049).

CONCLUSION

Our study indicated that NLR values were significantly higher in patients with documented SVT than in control subjects. Inducibility of SVT during EPS was associated with higher NLR values.

Development and validation of an arrhythmia-specific scale in tachycardia and arrhythmia with focus on health-related quality of life

BACKGROUND

Arrhythmias can cause a profoundly negative impact on a person's daily life, leading to impaired health-related quality of life (HRQOL). Assessment of HRQOL can provide valuable information before, during, and after healthcare interventions for arrhythmias.

OBJECTIVE

The aim was to develop and validate a disease-specific scale evaluating HRQOL in patients with different forms of arrhythmia.

METHODS

The Arrhythmia-Specific questionnaire in Tachycardia and Arrhythmia (ASTA HRQOL) was developed from a literature review, patient interviews, and expert panel evaluations. This version was then psychometrically evaluated in patients treated with radiofrequency catheter ablation because of different forms of arrhythmias and patients who sought emergency care because of atrial fibrillation. Construct validity was evaluated with item-total correlations, confirmatory factor analyses, and convergent and discriminant validity. Internal consistency was evaluated using Cronbach's α.

RESULTS

All items reached the expected level of item-total correlations of greater than 0.3 for the total scale. The content validity index was sufficient for all items, as was the total scale (0.86-1.0). The 2-factor confirmatory factor analysis model that included the physical and mental factors showed a better fit between model and data than the 1-factor model did (P < .001). Convergent and discriminant validities were evaluated in the correlation analyses between the ASTA HRQOL subscales and SF-36 physical and mental dimensions. A strong correlation was found between the hypothesized physical and mental scales. Internal consistency was satisfactory with a lower bound confidence interval (95%) for Cronbach's α .70 or greater for all the ASTA HRQOL scales.

CONCLUSIONS

The ASTA HRQOL questionnaire can be a valuable contribution to HRQOL assessments in patients with different forms of arrhythmia. Until there is more evidence regarding validity and reliability, using both the total and subscale scores is recommended.

Quality of life in pediatric patients affected by electrophysiologic disease

BACKGROUND

Treatment of electrophysiologic (EP) disease in pediatric patients has improved; however, the effects on quality of life (QOL) are unknown.

OBJECTIVE

The purpose of this study was to compare QOL within EP disease groups and to other congenital heart diseases, to evaluate the effects of cardiac rhythm devices on QOL, and to identify drivers of QOL in EP disease.

METHODS

Cross-sectional study of patient/parent proxy-reported Pediatric Cardiac Quality of Life Inventory scores (Total, Disease Impact, Psychosocial Impact) in subjects aged 8 to 18 years from 11 centers with congenital complete heart block (CCHB), ventricular tachycardia (VT), supraventricular tachycardia (SVT), and long QT syndrome (LQTS). QOL was compared between EP disease groups and congenital heart disease groups [bicuspid aortic valve (BAV), tetralogy of Fallot (TOF), and Fontan]. General linear modeling was used to perform group comparisons and to identify predictors of QOL variation.

RESULTS

Among 288 patient-parent pairs, mean age was 12.8 ± 3.0 years. CCHB (μ = 83) showed higher patient Total QOL than other EP disease cohorts (P ≤ .02; LQTS μ = 73; SVT μ = 74). SVT (μ = 75) and LQTS (μ = 75) had lower patient Total scores than BAV (μ = 81; P ≤ .008). Patient/parent-proxy QOL scores for all EP disease groups were not different than TOF and higher than Fontan. The presence of a cardiac rhythm device was associated with lower QOL scores in LQTS (μ = 66 vs μ = 76; P < .01). Predictors of lower patient/parent-proxy QOL included EP disease type (P ≤ .03), increased medical care utilization (P ≤ .04), and no parental college degree (P ≤ .001).

CONCLUSION

Given the significant variation in QOL in EP disease type, stratification by EP disease type and increased medical care utilization may allow for targeted interventions to improve QOL.

Differences in quality of life, anxiety and depression in patients with paroxysmal atrial fibrillation and common forms of atrioventricular reentry supraventricular tachycardias

INTRODUCTION

The aim of this study was to evaluate the differences in quality of life and psychosocial stress parameters among patients with paroxysmal atrial fibrillation (AF) and common forms of atrioventricular reentry supraventricular tachycardias (SVTs).

METHODS AND RESULTS

The total study population included 106 patients, 54 patients with paroxysmal AF (32 males, age 56.64±12.50 years) and 52 with SVTs (25 males, age 40.46±14.96 years). General health (p<0.01), physical function (p=0.004), role emotion (p=0.002) and role physical (p<0.01) scores were lower in patients who suffered AF. SF-36 physical and mental health summary measures were also significantly lower in the AF group compared to those in SVT group (p<0.01 and p=0.001, respectively). Lower SF-36 total score was observed in patients with AF compared to those with SVTs (p<0.01). Comparing the anxiety and depression scores all the values were higher in patients with AF. Higher STAI-state scores (p<0.01), STAI-trait scores (p=0.039) and BDI scores (p=0.077) were seen in patients who suffered AF comparing to those with SVTs.

CONCLUSIONS

Quality of life is significantly impaired and the level of anxiety is significantly higher in patients with AF comparing to those with common forms of SVTs.

Development and validation of a new Arrhythmia-Specific questionnaire in Tachycardia and Arrhythmia (ASTA) with focus on symptom burden

BACKGROUND

Arrhythmias can appear with a variety of symptoms, all from vague to pronounced and handicapping symptoms. Therefore, patient-reported outcomes (PROs) concerning symptom burden are important to assess and take into consideration in the care and treatment of patients with arrhythmias. The main purpose was to develop and validate a disease-specific questionnaire evaluating symptom burden in patients with different forms of arrhythmias.

METHODS

A literature review was conducted and arrhythmia patients were interviewed. Identified symptoms were evaluated by an expert panel consisting of cardiologists and nurses working daily with arrhythmia patients. SF-36 and Symptoms Checklist (SCL) were used in the validation of the new questionnaire Arrhythmia-Specific questionnaire in Tachycardia and Arrhythmia (ASTA). Homogeneity was evaluated with Spearman's correlations and Cronbach's alpha coefficient (α) was used to evaluate internal consistency. Construct validity was evaluated using item-total correlations and convergent and discriminant validity. For this, Spearman's correlations were calculated between the ASTA symptom scale, SCL and SF-36. Concurrent validity was validated by Spearman's correlations between the ASTA symptom scale and SCL.

RESULTS

The correlations between the different items in the ASTA symptom scale showed generally sufficient homogeneity. Cronbach's coefficient was found to be satisfactory (α = 0.80; lower bound 95% CI for α = 0.76). Construct validity was supported by item-total correlations where all items in the symptom scale were sufficiently correlated (≥0.3). Convergent and discriminant validity was supported by the higher correlations to the arrhythmia-specific SCL compared to the generic SF-36. Concurrent validity was evaluated and there were sufficiently, but not extremely strong correlations found between the ASTA symptom scale and SCL.

CONCLUSIONS

The nine items of the ASTA symptom scale were found to have good psychometric properties in patients with different forms of arrhythmias. Arrhythmia patients suffer from both frequent and disabling symptoms. The validated ASTA questionnaire can be an important contribution to PROs regarding symptom burden in arrhythmia patients.

Symptomatic improvement after catheter ablation of supraventricular tachycardia measured by the arrhythmia-specific questionnaire U22

INTRODUCTION

The main indication for ablation of supraventricular tachycardia is symptomatic relief. Generic measures of quality of life are not suitable for direct evaluation of arrhythmia-related symptoms, and a specific tool is needed. The questionnaire U22 quantifies symptoms associated with arrhythmic events. It uses discrete 0-10 scales for quantification of influence of arrhythmia on well-being, intensity of discomfort, type of dominant symptom, and a time aspect that summarizes duration and frequency of spells. We evaluated U22 in a well defined group of patients with paroxysmal supraventricular tachycardia, undergoing an intervention with a distinct end-point and a high success rate.

METHODS

Symptoms in patients with accessory pathway and atrioventricular nodal re-entrant tachycardia scheduled for ablation were measured with U22 and SF-36 on admission. The evaluation was repeated after 6 months.

RESULTS

Altogether 58 patients successfully ablated in 2006-2008 completed the four forms (U22 and SF-36 at base-line and follow-up, 210 ± 35 days after ablation). The score for well-being (0-10; 10 being best) increased from 5.9 ± 2.6 to 7.9 ± 1.9 (P < 0.0005). The score for arrhythmia as cause for impairment in well-being (0-10; 10 being highest) decreased from 7.5 ± 2.8 to 2.0 ± 3.1 (P < 0.0005). The time aspect score (0-10) decreased from 4.7 ± 1.5 to 1.4 ± 1.8 (P < 0.0005). The two SF-36 summary measures PCS and MCS increased from 46.9 ± 9.4 to 48.4 ± 10.7 and from 44.9 ± 12.5 to 49.1 ± 9.9 (P = 0.04 and 0.002).

CONCLUSION

After successful ablation of accessory pathway and atrioventricular nodal re-entrant tachycardia, the U22 protocol detected a relevant increase in arrhythmia-related well-being. Modest improvement in general well-being was detected by the SF-36 protocol.