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1.
J Pain Symptom Manage ; 61(6): 1227-1233, 2021 06.
Article in English | MEDLINE | ID: mdl-33065208

ABSTRACT

CONTEXT: Women with metastatic breast cancer (MBC) experience a significant symptom burden, including cancer pain. Yoga is a mind-body discipline that has shown promise for alleviating cancer pain, but few studies have included patients with metastatic disease or examined the acute effects of yoga practice. OBJECTIVES: To determine whether daily pain changed significantly during a randomized controlled trial of the Mindful Yoga program among women with MBC and whether time spent in yoga practice was related to daily pain. METHODS: On alternate weeks during the intervention period, we collected daily measures of pain from a subset of 48 women randomized to either yoga (n = 30) or a support group condition (n = 18). We also assessed daily duration of yoga practice among patients randomized to yoga. RESULTS: Pain levels were low for women in both conditions, and no differential treatment effects were found on daily pain. However, among women randomized to yoga, a dose/response relationship was found between yoga practice duration and daily pain. When patients had spent relatively more time practicing yoga across two consecutive days, they were more likely to experience lower pain on the next day. This finding is consistent with an earlier MBC study. Meditation practice showed the strongest association with lower daily pain. CONCLUSION: Findings suggest that yoga practice (meditation practice in particular) is associated with acute improvements in cancer pain, and that yoga interventions may be more impactful if tested in a sample of patients with advanced cancer in which pain is relatively elevated.


Subject(s)
Breast Neoplasms , Meditation , Yoga , Breast Neoplasms/complications , Breast Neoplasms/therapy , Female , Humans , Pain/etiology , Quality of Life
2.
Support Care Cancer ; 27(11): 4307-4316, 2019 Nov.
Article in English | MEDLINE | ID: mdl-30877596

ABSTRACT

PURPOSE: Patients with metastatic breast cancer (MBC) experience high levels of symptoms. Yoga interventions have shown promise for improving cancer symptoms but have rarely been tested in patients with advanced disease. This study examined the acceptability of a comprehensive yoga program for MBC and the feasibility of conducting a randomized trial testing the intervention. METHODS: Sixty-three women with MBC were randomized with a 2:1 allocation to yoga or a support group comparison condition. Both interventions involved eight weekly group sessions. Feasibility was quantified using rates of accrual, attrition, and session attendance. Acceptability was assessed with a standardized self-report measure. Pain, fatigue, sleep quality, psychological distress, mindfulness, and functional capacity were assessed at baseline, post-intervention, and 3 and 6 months post-intervention. RESULTS: We met goals for accrual and retention, with 50% of eligible patients enrolled and 87% of randomized participants completing post-intervention surveys. Sixty-five percent of women in the yoga condition and 90% in the support group attended ≥ 4 sessions. Eighty percent of participants in the yoga condition and 65% in the support group indicated that they were highly satisfied with the intervention. Following treatment, women in the yoga intervention had modest improvements in some outcomes; however, overall symptom levels were low for women in both conditions. CONCLUSIONS: Findings suggest that the yoga intervention content was highly acceptable to patients with MBC, but that there are challenges to implementing an intervention involving eight group-based in-person sessions. Alternative modes of delivery may be necessary to reach patients most in need of intervention.


Subject(s)
Breast Neoplasms/psychology , Mindfulness/methods , Quality of Life/psychology , Yoga/psychology , Adult , Female , Humans , Middle Aged , Neoplasm Metastasis , Pilot Projects
3.
Mult Scler ; 25(8): 1178-1188, 2019 07.
Article in English | MEDLINE | ID: mdl-29985095

ABSTRACT

BACKGROUND: Mindfulness training is often used as a therapeutic intervention to manage stress and enhance emotional well-being, yet trials for multiple sclerosis (MS) are limited and few have used an active control. OBJECTIVE: Assess the feasibility of mindfulness-based stress reduction (MBSR) for people with MS and evaluate the efficacy of MBSR compared to an education control. METHODS: We conducted a single-blind, randomized trial of MBSR versus education control among 62 adults with MS. Primary outcomes were measures of feasibility. Secondary outcomes included perceived stress, anxiety, depression, fatigue, pain, resilience, and the Paced Auditory Serial Addition Test, assessed at baseline, 8 weeks, and 12 months. Mean scores for secondary outcome measures were compared between groups at each time point and within groups across time by analyses of covariance or paired t-tests, respectively. RESULTS: Successful recruitment and retention demonstrated feasibility. Improvements in several secondary outcomes were observed among both MBSR and control groups. However, differences between the groups were not statistically significant at either 8 weeks or 12 months. CONCLUSION: Emotional well-being improved with both MBSR and education. Spontaneous improvement cannot be ruled out as an explanation for findings and additional studies that evaluate the impact of mindfulness training to improve emotional health are warranted.


Subject(s)
Mindfulness/methods , Multiple Sclerosis/psychology , Outcome Assessment, Health Care , Stress, Psychological/therapy , Adult , Feasibility Studies , Female , Follow-Up Studies , Humans , Male , Middle Aged , Psychotherapy, Group , Single-Blind Method
4.
BMC Complement Altern Med ; 17(1): 153, 2017 Mar 13.
Article in English | MEDLINE | ID: mdl-28288595

ABSTRACT

BACKGROUND: Women with metastatic breast cancer (MBC) have average life expectancies of about 2 years, and report high levels of disease-related symptoms including pain, fatigue, sleep disturbance, psychological distress, and functional impairment. There is growing recognition of the limitations of medical approaches to managing such symptoms. Yoga is a mind-body discipline that has demonstrated a positive impact on psychological and functional health in early stage breast cancer patients and survivors, but has not been rigorously studied in advanced cancer samples. METHODS: This randomized controlled trial examines the feasibility and initial efficacy of a Mindful Yoga program, compared with a social support condition that controls for attention, on measures of disease-related symptoms such as pain and fatigue. The study will be completed by December 2017. Sixty-five women with MBC age ≥ 18 are being identified and randomized with a 2:1 allocation to Mindful Yoga or a support group control intervention. The 120-min intervention sessions take place weekly for 8 weeks. The study is conducted at an urban tertiary care academic medical center located in Durham, North Carolina. The primary feasibility outcome is attendance at intervention sessions. Efficacy outcomes include pain, fatigue, sleep quality, psychological distress, mindfulness and functional capacity at post-intervention, 3-month follow-up, and 6-month follow-up. DISCUSSION: In this article, we present the challenges of designing a randomized controlled trial with long-term follow-up among women with MBC. These challenges include ensuring adequate recruitment including of minorities, limiting and controlling for selection bias, tailoring of the yoga intervention to address special needs, and maximizing adherence and retention. This project will provide important information regarding yoga as an intervention for women with advanced cancer, including preliminary data on the psychological and functional effects of yoga for MBC patients. This investigation will also establish rigorous methods for future research into yoga as an intervention for this population. TRIAL REGISTRATION: ClinicalTrials.gov identifer: NCT01927081 , registered August 16, 2013.


Subject(s)
Breast Neoplasms/complications , Fatigue/therapy , Yoga , Adult , Breast Neoplasms/pathology , Breast Neoplasms/psychology , Breast Neoplasms/therapy , Fatigue/etiology , Female , Humans , Meditation , Mindfulness , Neoplasm Metastasis , Pain/etiology , Pain Management , Quality of Life , Research Design , Young Adult
5.
Int J Yoga Therap ; 26(1): 93-100, 2016 Jan.
Article in English | MEDLINE | ID: mdl-27797669

ABSTRACT

Published findings from a randomized controlled trial have shown that Mindful Yoga training improves symptoms, functional deficits, and coping abilities in individuals with fibromyalgia and that these benefits are replicable and can be maintained 3 months post-treatment. The aim of this study was to collect pilot data in female fibromyalgia patients (n = 7) to determine if initial evidence indicates that Mindful Yoga also modulates the abnormal pain processing that characterizes fibromyalgia. Pre- and post-treatment data were obtained on quantitative sensory tests and measures of symptoms, functional deficits, and coping abilities. Separation test analyses indicated significant improvements in heat pain tolerance, pressure pain threshold, and heat pain after-sensations at post-treatment. Fibromyalgia symptoms and functional deficits also improved significantly, including physical tests of strength and balance, and pain coping strategies. These findings indicate that further investigation is warranted into the effect of Mindful Yoga on neurobiological pain processing.


Subject(s)
Fibromyalgia/psychology , Fibromyalgia/therapy , Pain Management , Pain/psychology , Yoga , Female , Humans , Meditation , Pilot Projects , Treatment Outcome
6.
Int J Yoga Therap ; 24: 117-24, 2014.
Article in English | MEDLINE | ID: mdl-25858658

ABSTRACT

Studies in circumscribed clinical settings have reported the adoption of yoga by many fibromyalgia (FM) patients. However, it is unclear from existing studies which types of yoga practices FM patients are typically engaging in and the extent to which they experience yoga as helpful or not. The purpose of this study was to survey FM patients in many different regions to inquire about their engagement in various yoga practices, the perceived benefits, and the obstacles to further practice. A 13-question Internet survey of persons self-identified as FM patients was conducted among subscribers to 2 electronic newsletters on the topic of FM. Respondents (N = 2543) replied from all 50 U.S. states and also from Canada, Australia, and the United Kingdom, and from more than two dozen other countries. On average, respondents were 57 years of age and 96% were female, with an average time since diagnosis of 13 years. Of these respondents, 79.8% had considered trying yoga and 57.8% had attended 1 yoga class. The respondents' classes typically focused almost exclusively on yoga poses, with minimal training in meditation, breathing techniques, or other practices. The most commonly cited benefits were reduced stiffness, relaxation, and better balance. The most frequently cited obstacles were concerns about the poses being too physically demanding and fear that the poses would cause too much pain. These findings confirm strong interest in yoga across a geographically diverse range of FM patients. However, concerns about yoga-induced pain and yoga poses being too difficult are common reasons that FM patients do not engage in yoga exercises. This study supports the need for yoga programs tailored for FM patients to include modification of poses to minimize aggravating movements and substantive training in meditation and other yoga-based coping methods to minimize pain-related fear.

7.
Clin J Pain ; 28(9): 804-13, 2012.
Article in English | MEDLINE | ID: mdl-22751025

ABSTRACT

OBJECTIVES: Published preliminary findings from a randomized-controlled trial suggest that an 8-week Yoga of Awareness intervention may be effective for improving symptoms, functional deficits, and coping abilities in fibromyalgia. The primary aims of this study were to evaluate the same intervention's posttreatment effects in a wait-list group and to test the intervention's effects at 3-month follow-up in the immediate treatment group. METHODS: Unpaired t tests were used to compare data from a per protocol sample of 21 women in the immediate treatment group who had completed treatment and 18 women in the wait-list group who had completed treatment. Within-group paired t tests were performed to compare posttreatment data with 3-month follow-up data in the immediate treatment group. The primary outcome measure was the Fibromyalgia Impact Questionnaire Revised (FIQR). Multilevel random-effects models were also used to examine associations between yoga practice rates and outcomes. RESULTS: Posttreatment results in the wait-list group largely mirrored results seen at posttreatment in the immediate treatment group, with the FIQR Total Score improving by 31.9% across the 2 groups. Follow-up results showed that patients sustained most of their posttreatment gains, with the FIQR Total Score remaining 21.9% improved at 3 months. Yoga practice rates were good, and more practice was associated with more benefit for a variety of outcomes. DISCUSSION: These findings indicate that the benefits of Yoga of Awareness in fibromyalgia are replicable and can be maintained.


Subject(s)
Awareness/physiology , Fibromyalgia/psychology , Fibromyalgia/rehabilitation , Waiting Lists , Yoga , Activities of Daily Living , Adaptation, Psychological/physiology , Adult , Aged , Catastrophization/etiology , Female , Fibromyalgia/complications , Follow-Up Studies , Humans , Male , Middle Aged , Quality of Life , Retrospective Studies , Sensation Disorders/etiology , Surveys and Questionnaires , Tendons/innervation , Time Factors , Treatment Outcome , Young Adult
8.
J Pain Symptom Manage ; 41(1): 1-13, 2011 Jan.
Article in English | MEDLINE | ID: mdl-20832982

ABSTRACT

CONTEXT: Lung cancer is one of the most common cancers in the United States and is associated with high levels of symptoms, including pain, fatigue, shortness of breath, and psychological distress. Caregivers and patients are adversely affected. However, previous studies of coping skills training (CST) interventions have not been tested in patients with lung cancer nor have systematically included caregivers. OBJECTIVES: This study tested the efficacy of a caregiver-assisted CST protocol in a sample of patients with lung cancer. METHODS: Two hundred thirty-three lung cancer patients and their caregivers were randomly assigned to receive 14 telephone-based sessions of either caregiver-assisted CST or education/support involving the caregiver. Patients completed measures assessing pain, psychological distress, quality of life (QOL), and self-efficacy for symptom management; caregivers completed measures assessing psychological distress, caregiver strain, and self-efficacy for helping the patient manage symptoms. RESULTS: Patients in both treatment conditions showed improvements in pain, depression, QOL, and self-efficacy, and caregivers in both conditions showed improvements in anxiety and self-efficacy from baseline to four-month follow-up. Results of exploratory analyses suggested that the CST intervention was more beneficial to patients/caregivers with Stage II and III cancers, whereas the education/support intervention was more beneficial to patients/caregivers with Stage I cancer. CONCLUSION: Taken together with the broader literature in this area, results from this study suggest that psychosocial interventions can lead to improvements in a range of outcomes for cancer patients. Suggestions for future studies include the use of three-group designs (e.g., comparing two active interventions with a standard-care control) and examining mechanisms of change.


Subject(s)
Caregivers/education , Cognitive Behavioral Therapy/methods , Lung Neoplasms/therapy , Pain/prevention & control , Social Support , Stress, Psychological/prevention & control , Adaptation, Psychological , Caregivers/psychology , Cognitive Behavioral Therapy/education , Female , Humans , Lung Neoplasms/complications , Lung Neoplasms/psychology , Male , Middle Aged , Pain/etiology , Pain/psychology , Pain Measurement , Quality of Life/psychology , Remote Consultation/methods , Self Efficacy , Stress, Psychological/etiology , Stress, Psychological/psychology , Treatment Outcome
9.
Pain ; 151(2): 530-539, 2010 Nov.
Article in English | MEDLINE | ID: mdl-20946990

ABSTRACT

A mounting body of literature recommends that treatment for fibromyalgia (FM) encompass medications, exercise and improvement of coping skills. However, there is a significant gap in determining an effective counterpart to pharmacotherapy that incorporates both exercise and coping. The aim of this randomized controlled trial was to evaluate the effects of a comprehensive yoga intervention on FM symptoms and coping. A sample of 53 female FM patients were randomized to the 8-week Yoga of Awareness program (gentle poses, meditation, breathing exercises, yoga-based coping instructions, group discussions) or to wait-listed standard care. Data were analyzed by intention to treat. At post-treatment, women assigned to the yoga program showed significantly greater improvements on standardized measures of FM symptoms and functioning, including pain, fatigue, and mood, and in pain catastrophizing, acceptance, and other coping strategies. This pilot study provides promising support for the potential benefits of a yoga program for women with FM.


Subject(s)
Awareness/physiology , Fibromyalgia/psychology , Fibromyalgia/rehabilitation , Muscle Stretching Exercises/methods , Yoga , Adult , Aged , Catastrophization/etiology , Fatigue/etiology , Female , Fibromyalgia/complications , Humans , Middle Aged , Movement Disorders/etiology , Pain/etiology , Perceptual Disorders/etiology , Pilot Projects , Postural Balance/physiology , Retrospective Studies , Surveys and Questionnaires
10.
J Speech Lang Hear Res ; 53(5): 1087-95, 2010 Oct.
Article in English | MEDLINE | ID: mdl-20689025

ABSTRACT

PURPOSE: The purpose of the present study was to assess whether diminished tolerance for disruptions to across-frequency timing in listeners with hearing impairment can be attributed to broad auditory tuning. METHOD: In 2 experiments in which random assignment was used, sentences were represented as 3 noise bands centered at 530, 1500, and 4243 Hz, which were amplitude modulated by 3 corresponding narrow speech bands. To isolate broad tuning from other influences of hearing impairment, listeners with normal hearing (45 in Experiment 1 and 30 in Experiment 2) were presented with these vocoder stimuli, having carrier band filter slopes of 12, 24, and 192 dB/octave. These speech patterns were presented in synchrony and with between-band asynchronies up to 40 ms. RESULTS: Mean intelligibility scores were reduced in conditions of severe, but not moderate, simulated broadening. Although scores fell as asynchrony increased, the steeper drop in performance characteristic of listeners with hearing impairment tested previously was not observed in conditions of simulated broadening. CONCLUSIONS: The intolerance for small across-frequency asynchronies observed previously does not appear attributable to broad tuning. Instead, the present data suggest that the across-frequency processing mechanism in at least some listeners with hearing impairment might be less robust to this type of degradation.


Subject(s)
Auditory Threshold/physiology , Field Dependence-Independence , Perceptual Masking/physiology , Speech Perception/physiology , Adaptation, Physiological , Adolescent , Adult , Audiometry, Speech , Humans , Noise , Reference Values , Sound Spectrography , Speech Acoustics , Time Factors , Young Adult
11.
J Altern Complement Med ; 16(8): 899-905, 2010 Aug.
Article in English | MEDLINE | ID: mdl-20624101

ABSTRACT

BACKGROUND: Seniors age 65 and older represent the fastest-growing sector of the population and, like many Americans, are increasingly drawn to yoga. This presents both an extraordinary opportunity and a serious challenge for yoga instructors who must be both a resource and guardians of safety for this uniquely vulnerable group. A typical class of seniors is likely to represent the most diverse mix of abilities of any age group. While some may be exceedingly healthy, most fit the profile of the average older adult in America, 80% of whom have at least one chronic health condition and 50% of whom have at least two. OBJECTIVES: This article discusses the Therapeutic Yoga for Seniors program, offered since 2007 at Duke Integrative Medicine to fill a critical need to help yoga instructors work safely and effectively with the increasing number of older adults coming to yoga classes, and explores three areas that pose the greatest risk of compromise to older adult students: sedentary lifestyle, cardiovascular disease, and osteoporosis. To provide a skillful framework for teaching yoga to seniors, we have developed specific Principles of Practice that integrate the knowledge gained from Western medicine with yogic teachings.


Subject(s)
Exercise , Health Promotion/methods , Health Status , Self Care/methods , Vulnerable Populations/statistics & numerical data , Yoga , Aged , Coronary Artery Disease/prevention & control , Female , Humans , Hypertension/prevention & control , Life Style , Male , Program Evaluation , Quality of Life , Safety , United States
12.
Support Care Cancer ; 17(10): 1301-9, 2009 Oct.
Article in English | MEDLINE | ID: mdl-19214594

ABSTRACT

GOAL OF WORK: Breast cancer survivors have limited options for the treatment of hot flashes and related symptoms. Further, therapies widely used to prevent recurrence in survivors, such as tamoxifen, tend to induce or exacerbate menopausal symptoms. The aim of this preliminary, randomized controlled trial was to evaluate the effects of a yoga intervention on menopausal symptoms in a sample of survivors of early-stage breast cancer (stages IA-IIB). MATERIALS AND METHODS: Thirty-seven disease-free women experiencing hot flashes were randomized to the 8-week Yoga of Awareness program (gentle yoga poses, meditation, and breathing exercises) or to wait-list control. The primary outcome was daily reports of hot flashes collected at baseline, posttreatment, and 3 months after treatment via an interactive telephone system. Data were analyzed by intention to treat. MAIN RESULTS: At posttreatment, women who received the yoga program showed significantly greater improvements relative to the control condition in hot-flash frequency, severity, and total scores and in levels of joint pain, fatigue, sleep disturbance, symptom-related bother, and vigor. At 3 months follow-up, patients maintained their treatment gains in hot flashes, joint pain, fatigue, symptom-related bother, and vigor and showed additional significant gains in negative mood, relaxation, and acceptance. CONCLUSIONS: This pilot study provides promising support for the beneficial effects of a comprehensive yoga program for hot flashes and other menopausal symptoms in early-stage breast cancer survivors.


Subject(s)
Breast Neoplasms/rehabilitation , Exercise Therapy , Hot Flashes/therapy , Menopause , Yoga , Adult , Aged , Female , Hot Flashes/chemically induced , Humans , Middle Aged , Pilot Projects , Quality of Life , Severity of Illness Index , Survivors/psychology , Treatment Outcome
13.
J Marital Fam Ther ; 33(4): 517-28, 2007 Oct.
Article in English | MEDLINE | ID: mdl-17935533

ABSTRACT

In a recent randomized controlled trial, couples participating in a mindfulness-based relationship enhancement program demonstrated significant improvements in relationship satisfaction and relationship distress (Carson, Carson, Gil, & Baucom, 2004). Here we report on a multiple mediation analysis of these couples' improvements. Potential mediators included measures of couples' engagement in exciting self-expanding activities, couples' ability to accept one another's difficult characteristics, and individual partners' ability to relax. Results indicate that to a large extent, the mindfulness-related relationship improvements can be attributed to partners' sense that they were participating in exciting self-expanding activities together during the course of the intervention. The implications of these findings for future mindfulness research are discussed.


Subject(s)
Consciousness , Interpersonal Relations , Marital Therapy/organization & administration , Marriage/psychology , Quality of Life , Spouses/psychology , Adult , Empathy , Female , Humans , Internal-External Control , Male , Mind-Body Relations, Metaphysical , Randomized Controlled Trials as Topic , Self Concept
14.
J Pain Symptom Manage ; 33(3): 331-41, 2007 Mar.
Article in English | MEDLINE | ID: mdl-17349503

ABSTRACT

Metastatic breast cancer (MBC) remains a terminal illness for which major treatment advances are slow to appear, and hence it is crucial that effective palliative interventions be developed to reduce the cancer-related symptoms of women with this condition during the remaining years of their lives. This pilot/feasibility study examined a novel, yoga-based palliative intervention, the Yoga of Awareness Program, in a sample of women with MBC. The eight-week protocol included gentle yoga postures, breathing exercises, meditation, didactic presentations, and group interchange. Outcome was assessed using daily measures of pain, fatigue, distress, invigoration, acceptance, and relaxation during two preintervention weeks and the final two weeks of the intervention. Thirteen women completed the intervention (mean age=59; mean time since diagnosis=7 years; two African American, 11 Caucasian). During the study, four participants had cancer recurrences, and the physical condition of several others deteriorated noticeably. Despite low statistical power, pre-to-post multilevel outcomes analyses showed significant increases in invigoration and acceptance. Lagged analyses of length of home yoga practice (controlling for individual mean practice time and outcome levels on the lagged days) showed that on the day after a day during which women practiced more, they experienced significantly lower levels of pain and fatigue, and higher levels of invigoration, acceptance, and relaxation. These findings support the need for further investigation of the effects of the Yoga of Awareness Program in women with MBC.


Subject(s)
Breast Neoplasms/pathology , Breast Neoplasms/therapy , Yoga , Adult , Breast Neoplasms/psychology , Feasibility Studies , Female , Humans , Middle Aged , Neoplasm Metastasis , Pilot Projects
15.
J Holist Nurs ; 23(3): 287-304, 2005 Sep.
Article in English | MEDLINE | ID: mdl-16049118

ABSTRACT

PURPOSE: Loving-kindness meditation has been used for centuries in the Buddhist tradition to develop love and transform anger into compassion. This pilot study tested an 8-week loving-kindness program for chronic low back pain patients. METHOD: Patients (N = 43) were randomly assigned to the intervention or standard care. Standardized measures assessed patients' pain, anger, and psychological distress. FINDINGS: Post and follow-up analyses showed significant improvements in pain and psychological distress in the loving-kindness group, but no changes in the usual care group. Multilevel analyses of daily data showed that more loving-kindness practice on a given day was related to lower pain that day and lower anger the next day. CONCLUSIONS: Preliminary results suggest that the loving-kindness program can be beneficial in reducing pain, anger, and psychological distress in patients with persistent low back pain. IMPLICATIONS: Clinicians may find loving-kindness meditation helpful in the treatment of patients with persistent pain.


Subject(s)
Adaptation, Psychological , Attitude to Health , Holistic Nursing/standards , Low Back Pain/nursing , Low Back Pain/psychology , Meditation , Adult , Aged , Aged, 80 and over , Anger , Humans , Low Back Pain/rehabilitation , Middle Aged , Pain Measurement/methods , Pilot Projects , Spirituality , Surveys and Questionnaires , Time Factors
16.
J Nucl Cardiol ; 10(1): 56-62, 2003.
Article in English | MEDLINE | ID: mdl-12569332

ABSTRACT

BACKGROUND: Mental stress-induced ischemia, as detected by radionuclide studies, has yielded reversible ischemia in only 30% to 60% of patients with exercise-induced ischemia. Little is known about the reproducibility of myocardial perfusion imaging in detecting mental stress-induced ischemia. The purpose of this study was to further evaluate the occurrence and reproducibility of mental stress-induced ischemia in patients with coronary artery disease (CAD) and in normal control subjects with a low likelihood of CAD by using sestamibi single photon emission computed tomography (SPECT) imaging. METHODS AND RESULTS: A total of 40 patients were enrolled in this study: 19 patients with CAD and typical angina or reversible ischemia (positive exercise treadmill study or positive adenosine thallium study) and 21 normal control subjects underwent mental stress testing as well as myocardial perfusion imaging. The subjects were given a speaking task, and SPECT imaging was subsequently performed. Two experienced readers compared mental stress imaging with a resting image using a 20-segment cardiac model. Hemodynamic changes in blood pressure and heart rate with mental stress were also measured in all subjects. Each patient with CAD also underwent repeat mental stress testing and myocardial imaging approximately 2 weeks later. Of the 19 patients with CAD and typical angina or with evidence of reversible ischemia, 16 (84%) demonstrated ischemia with mental stress, as detected by sestamibi SPECT imaging. The mean number of new or worsened perfusion defects attributable to mental stress was 3.5, with a mean severity of 1.7. These results were also reproducible. With repeated mental stress testing and myocardial imaging, 12 of the 16 CAD patients (75%) demonstrated evidence of myocardial ischemia. None of the 21 normal control subjects had evidence of mental stress-induced myocardial ischemia. Mental stress also induced reproducible and significant hemodynamic changes in CAD patients. CONCLUSIONS: In patients with known CAD with typical angina or with evidence of reversible ischemia despite taking medications, mental stress was very effective in inducing myocardial ischemia, as detected by sestamibi SPECT imaging. Mental stress was also found to elicit significant hemodynamic responses. Furthermore, these findings demonstrated good reproducibility.


Subject(s)
Myocardial Ischemia/diagnostic imaging , Stress, Psychological/complications , Adult , Aged , Blood Pressure/physiology , Coronary Disease/complications , Coronary Disease/diagnostic imaging , Electrocardiography , Exercise Test , Female , Humans , Male , Middle Aged , Myocardial Ischemia/etiology , Myocardial Ischemia/psychology , Radiopharmaceuticals , Reproducibility of Results , Severity of Illness Index , Stress, Psychological/physiopathology , Technetium Tc 99m Sestamibi , Tomography, Emission-Computed, Single-Photon
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