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Biomedical subjects

Samuel F Sears

Publications and source records attributed to Samuel F Sears.

30 records · Page 2Linked to original sources
PubMed2004

Do patients accept implantable atrial defibrillation therapy? Results from the Patient Atrial Shock Survey of Acceptance and Tolerance (PASSAT) Study.

INTRODUCTION: The Medtronic Jewel AF 7250 is an implantable cardioverter defibrillator with atrial and ventricular therapies (ICD-AT). The ICD-AT is effective in managing atrial tachyarrhythmias (atrial fibrillation [AF]), but patient acceptance remains an issue. This aim of this study was to measure ICD-AT acceptance. METHODS AND RESULTS: ICD-AT acceptance was evaluated in 96 patients enrolled in the "Jewel AF-AF-Only Study" for > or =3 months of follow-up (mean 19 months). Patients were mostly men (72%; age 65 +/- 12 years). Clinical data and a written survey (75% response rate) were used to quantify demographics, AF frequency and symptoms, atrial defibrillation therapy, quality of life (QOL), psychosocial distress, and ICD-AT therapy acceptance. From implant to survey, AF symptom and severity scores decreased by 18% (P < or = 0.05), and QOL (SF-36) scores increased by 15% to 50% (P < or = 0.05). ICD-AT therapy acceptance was high, with 71.3% of patients scoring in the 75th percentile on the Florida Patient Acceptance Survey. ICD-AT acceptance was correlated with the Physical Component Scale and Mental Health Component Scale scores of the SF-36 (r = 0.28 and 0.35, respectively). ICD-AT acceptance was negatively correlated with depressive symptomatology (r =-0.59), trait anxiety (r =-0.48), illness intrusiveness (r =-0.55), and AF symptom and severity scores (r =-0.26). ICD-AT acceptance did not correlate with preimplant cardioversions, number of atrial shocks, AF episodes detected by the device, or device implant duration. CONCLUSION: Most patients accepted ICD-AT therapy. Patients were more likely to accept ICD-AT if they had less psychosocial distress, greater QOL, and lower AF symptom burden.

Adult↗
PubMed2003

Biomedical and psychosocial predictors of anginal frequency in patients following angioplasty with and without coronary stenting.

This study examined the contribution of biomedical and psychological variables in the report of anginal frequency at 6-week, 6- and 12-month follow-up in patients who received angioplasty with and without stent. Patients (N = 70) completed a battery of standardized questionnaries, including measures of depression, anxiety, and anger. Principal components analysis computed a single factor of negative emotion for use as a predictor in regression analyses. For the 6-week model, only baseline anginal frequency predicted anginal frequency. Negative emotion joined baseline anginal frequency in the prediction model for 6-month anginal frequency, and collectively accounted for 23% of the variance. For the 12-month model, baseline anginal frequency, female sex, and negative emotions remained in the model, accounting for 46% of the variance in anginal frequency. These results highlight the importance of biomedical and psychosocial variables in predicting anginal frequency with psychological variables sustaining predictive value over the course of recovery.

Adult↗
PubMed2003

Sleep quality among patients treated with implantable atrial defibrillation therapy: effect of nocturnal shock delivery and psychological distress.

INTRODUCTION: The Medtronic ICD-AT has atrial/ventricular therapies, which can be programmed to deliver atrial defibrillation during sleep, intended to potentially decrease shock anxiety/pain and lifestyle disruption. However, these shocks may diminish sleep quality. This study examined atrial shock characteristics (i.e., mode, frequency), AF symptoms, and psychological factors as determinants of sleep quality. METHODS AND RESULTS: The 96 ICD-AT patients were mostly men (72%; M age 65 +/- 12 years) and implanted for 1.6 years (SD = 0.8 years). Patients were divided into shock groups based on the proportion of mode (> or =90%) of total atrial shocks received. Patients were grouped into either automatic-nocturnal shock group (8 P.M.-8 A.M.; n = 35) or manual-awake shock group (n = 42). Psychological measures included Pittsburgh Sleep Quality Index (PSQI), Center for Epidemiology Studies-Depression Scale, State-Trait Anxiety Inventory, and Illness Intrusiveness Rating Scale. Atrial fibrillation disease burden was assessed via atrial symptom score and atrial shock use. PSQI global scores were similar between manual (7.67 +/- 2.53) and automatic shock (8.20 +/- 2.93) groups. A multiple hierarchical regression analysis indicated that no atrial shock variables were predictive of sleep quality; yet, both AF symptom (B = 0.226, P = 0.040) and depression (B = 0.392, P = 0.034) scores predicted diminished sleep quality, accounting for 42% of the variance in global sleep quality (P < 0.001). CONCLUSION: These results suggest that atrial defibrillation therapy does not have a deleterious impact on sleep. However, the significance of AF symptoms and depression indicate that comprehensive care of both physical and psychological symptomatology may improve sleep quality in ICD-AT patients.

Aged↗
PubMedDate not supplied

Internet-based behavioral change and psychosocial care for patients with cardiovascular disease: a review of cardiac disease-specific applications.

BACKGROUND: Web-based interventions (WBIs) seem to be an efficacious method of addressing behavioral and psychosocial maladjustment among patients with chronic illness (eg, diabetes), behavioral concerns (eg, smoking cessation), and psychologic maladjustment (eg, panic disorder). Cardiology seems particularly well suited to the application of WBIs given its strong association with behavioral (eg, lifestyle) and cognitive (eg, stress and coping) factors. To date, few studies have been published that explore the use of WBIs on psychosocial and quality of life variables among populations with cardiac disease. OBJECTIVE: The purpose of this study is to review the use of WBIs in patients with cardiovascular disease to date, and to provide recommendations as to how future WBIs can be developed specifically to meet the needs of different populations with heart disease (eg, recipients of implantable cardioverter defibrillators, patients with congestive heart failure, and patients with congenital heart disease). CONCLUSIONS: We conclude that, although limitations exist, WBIs are a reasonable modus of improving patient outcomes.

Behavior↗
PubMedDate not supplied

Patient experiences with atrial fibrillation and treatment with implantable atrial defibrillation therapy.

BACKGROUND: Patient perspectives about their illness experiences, symptoms, and treatment are essential aspects of quality of life and provide direction for patient and provider decision making regarding innovative therapies such as implantable devices for arrhythmia. PURPOSE: The purpose of this qualitative study was to describe: 1) the experience of patients living with symptomatic, drug-refractory atrial fibrillation (AF) and 2) patient experiences and acceptance of treatment with the implantable cardioverter defibrillator (ICD) with atrial therapies (ICD-AT) including ventricular and atrial defibrillation therapy. PARTICIPANTS: Subjects were 3 women and 8 men, 35 to 80 years of age, who received the Medtronic Jewel AF 7250 ICD-AT as therapy for recurrent, drug-refractory AF, had a history of AF for 3 to 20 years and had experienced multiple treatment modalities including frequent external cardioversion in an effort to control their AF. METHODS: A semi-structured interview addressed experiences of symptoms and prior treatment for AF and experiences, concerns, and perceived benefits of the ICD-AT. Interviews were recorded and transcribed verbatim. Narratives were coded and categorized using Atlas Ti(R) software. Qualitative interpretive analysis methods were used to identify key themes. RESULTS: Before ICD-AT, patient themes focused on AF that was: 1) misdiagnosed, minimized, and poorly treated; 2) distressful because of frequent and intense AF symptoms (fatigue, dizziness, shortness of breath, and anxiety) before ICD-AT; 3) limiting of activities of daily living; 4) associated with distress from enduring previous treatment; and 5) associated with the continuous pursuit of successful treatment and maintenance of normalcy. Decision making regarding ICD-AT therapy included weighing symptom or treatment distress versus anticipated risks or benefits, hope for better outcomes, and lack of options. After ICD-AT, themes included positive perceptions of the device because of AF symptom relief, ability to resume normalcy, and medication tolerance; incorporation of shock experiences into life routines; and patient suggestions regarding preparation and social support. IMPLICATIONS: Symptoms of AF have a major negative impact on overall quality of life. Treatment with the ICD-AT confers a sense of security and reduced symptom distress. Greater provider attention to patient preparation and facilitating social support are important for future ICD-AT patient care.

Adult↗
PubMedDate not supplied

Do positive health expectations and optimism relate to quality-of-life outcomes for the patient with an implantable cardioverter defibrillator?

PURPOSE: Clinical trials with the implantable cardioverter defibrillator (ICD) have demonstrated desirable outcomes in terms of mortality and morbidity among patients with potentially lethal arrhythmias. This study examined the "resilience factors" of positive health expectations and global optimism prospectively using the general quality-of-life (QOL) scores of newly implanted ICD patients. METHODS: The study enrolled 88 newly implanted ICD patients (mean age, 65.3 +/- 13.2 years; 83% male; 92% white) assessed 8 and 14 months after ICD implantation. A series of 2 x 2 factorial multivariate analyses of covariance were performed to examine the differences between baseline low versus high positive health expectations and baseline low versus high optimism in short- and long-term general QOL scores. RESULTS: After control was used for ejection fraction (mean, 31%), the patients with baseline high positive health expectations reported better general health at a long-term follow-up assessment (P = .002). The patients with high optimism reported better mental health and social functioning at a short-term follow-up assessment (P =. 056), and this finding approached significance at a long-term follow-up assessment (P = .061). CONCLUSIONS: Positive health expectations and optimism are differentially related to various components of QOL. Collectively, these two resilience factors may be targeted in future studies of interventions to improve QOL for ICD patients.

Aged↗
PubMedDate not supplied

Managing congestive heart failure patient factors in the device era.

Device-based care such as implantable cardioverter-defibrillators and cardiac resynchronization therapy extends congestive heart failure (CHF) care into a new era. The purpose of this paper is 2-fold: (1) to review the development of device-based CHF management and the implications from a medical and patient management perspective, and (2) to provide assessment and treatment approaches on how to clinically manage patient outcomes optimally. Quality of life, depression, and anxiety are targeted as concerns for patients with CHF and cardiac resynchronization therapy/implantable cardioverter-defibrillators. Brief clinic-based interview questions and formal assessment tools are reviewed. Furthermore, a cognitive-behavioral paradigm using the "Appropriate Education, Behavioral Support, and Cognitive Coping" (ABC) model is proposed to aid health care professionals in addressing patients' device-specific concerns. Available research suggests the need for future studies assessing the efficacy of cognitive-behavioral treatments in patients with CHF and cardiac resynchronization therapy/implantable cardioverter-defibrillators.

Anxiety↗
PubMedDate not supplied

Predictors of quality of life in patients with implantable cardioverter defibrillators.

Few studies have prospectively examined characteristics of implantable cardioverter defibrillator (ICD) patients as predictors of postimplant outcome. In this study the authors considered the association between preimplant psychological characteristics, ICD shocks, and postimplant quality of life at short- and long-term follow-ups, controlling for age and ejection fraction (N=88). Hierarchical regression analyses revealed that history of depression, trait anxiety, optimism, social support, and ICD shocks accounted for 41.8% to 64.5% of the variance in quality of life indices at 8- and 14-month follow-ups, depending on the outcome assessed. Further, psychological variables were as strong as, or stronger than, age, ejection fraction, and ICD shocks in predicting quality of life outcomes.

Adult↗