Janet Nieveen

Functional status outcomes of patients with a coronary artery bypass graft over time

OBJECTIVE To examine functional status outcomes among patients with a coronary artery bypass graft (CABG) over time (ie, at baseline; 3 months, 6 months, and 12 months after surgery) and the impact of selected patient characteristics (ie, age, sex, comorbidities, and cardiac rehabilitation participation) on functional outcomes. DESIGN A prospective, repeated-measures design was used to examine functional status in patients with a CABG over time. SETTING A midwestern community hospital and regional cardiac referral center was the setting for enrolling patients with a CABG. OUTCOME MEASURES Functional status outcomes were measured by using the Medical Outcomes Study (MOS) Short Form 36 (SF-36) and Modified 7-Day Activity instruments. METHODS Baseline data were obtained by patient interview in the hospital setting after CABG surgery. At 3 months, 6 months, and 12 months after surgery, telephone interviews were conducted to administer research instruments. RESULTS Baseline scores on 7 of the 8 subscales of the MOS SF-36 were significantly lower than at 3 months, 6 months, or 12 months after surgery. Role-emotional functioning baseline scores were not significantly lower than 3-month scores; however, baseline scores were significantly lower than 6-month and 12-month scores. Three-month subscale scores were also significantly lower than 6-month or 12-month scores except for the subscales measuring social and general health functioning. Functional status as measured by the Modified 7-Day Activity tool did not demonstrate any significant differences between 3-month, 6-month, or 12-month activity levels. There were no significant differences by age group on any of the 8 subscales of the MOS SF-36 instrument. Women and subjects with more than 1 comorbidity had a significantly lower preoperative level of physical functioning. Cardiac rehabilitation participants had lower preoperative scores on role-emotional functioning than subjects who were not in rehabilitation. CONCLUSION Findings from this study can assist nurses and other health care workers to gain a perspective of the recovery and rehabilitation trajectory of patients with a CABG. The results of the study provide a basis for determining areas of functional limitations during recovery from CABG surgery. Study results can also be the foundation for evaluating outcomes of patients with a CABG when specific interventions (eg, pain management, psychosocial support, physical strengthening, fatigue management) are implemented during hospitalization, home recovery, and rehabilitation to target optimal psychosocial and physiologic functioning of patients with a CABG.

Impact of a home communication intervention for coronary artery bypass graft patients with ischemic heart failure on self-efficacy, coronary disease risk factor modification, and functioning

OBJECTIVE The purpose of this study is to determine the impact of a home communication intervention (HCI) for ischemic heart failure Coronary Artery Bypass Graft (CABG) patients >/= 65 years of age on self-efficacy, coronary artery disease risk factor modification and functioning posthospitalization. DESIGN A randomized clinical trial with repeated measures was used. SAMPLE A subsample of ischemic heart failure CABG surgery patients (n = 35) was drawn from the parent study of 180 CABG patients. RESULTS HCI participants (n = 18) had significantly higher adjusted mean self-efficacy scores [F(1, 29) = 6.40, P <.05] and adjusted mean levels of functioning (physical, general health, mental, and vitality functioning) compared with the routine care group (n = 17), using repeated measures analysis of covariance with baseline scores as covariates. There were also significant effects of time on bodily pain and role emotional functioning. Significantly higher exercise adherence (t = 3.09, P <.01) and lower reported stress (t = 3.77, P <.01) at 3 months after surgery was reported by HCI subjects. CONCLUSIONS Data from this pilot study can be used to strengthen the HCI intervention with more tailored strategies for vulnerable subgroups of CABG patients.

The relationship and influence of anxiety on postoperative pain in the coronary artery bypass graft patient

The purposes of this study were to investigate the relationship of postoperative anxiety and pain following coronary artery bypass graft (CABG) surgery, and to determine the effects of level of anxiety, demographic, and other factors on the level of postoperative pain. Pain intensity, sensory pain, and affective pain were measured along with anxiety on postoperative day 2 and day 3 by the McGill Pain Questionnaire Subscales (PPI, PRIS, and PRIA) and State Anxiety Inventory Scale, respectively. A direct relationship of anxiety with pain was found over time with the highest relationship on postoperative day 2 (r = 0.235-0.492, P < 0.001). A significant interaction between time and level of anxiety on affective pain was specific to postoperative day 2 (P < 0.01). Significant differences by level of anxiety and time were reported. Factors of age, gender, marital status, number of previous surgeries, and operation time had no effect on the level of postoperative pain.

Relationships between fatigue and early postoperative recovery outcomes over time in elderly patients undergoing coronary artery bypass graft surgery

BACKGROUND Despite successful coronary artery bypass graft (CABG) surgery, some patients continue to experience fatigue after their surgery. OBJECTIVE The purpose of this secondary analysis study was to examine the relationships of fatigue and early recovery outcomes (psychosocial and physiologic functioning, and physical activity) over time (6 weeks and 3 months) among older adult subjects, age 65 years and older, after CABG surgery. Comparison groups were those subjects who had fatigue at 3 weeks after surgery and nonfatigued subjects. DESIGN A prospective, comparative design was used for this secondary analysis study. SAMPLE Subjects in this study were drawn from the control group of subjects enrolled in the larger parent study. Subjects (N = 119) were dichotomized into fatigue (n = 66) and nonfatigued (n = 53) groups on the basis of their 3-week self-reports of postoperative fatigue. RESULTS At 6 weeks after surgery, fatigued subjects had significantly (P < .05) more impaired psychosocial functioning (role-emotional [t = 1.9], social [t = 2.6], and mental [t = 1.9] functioning) on the basis of the Medical Outcome Study Short Form 36. They had significantly (P < .005) higher mean hospital anxiety (t = -3.6) and depression (t = -2.9) subscale scores, respectively. Anxiety (t = -2.3, P < .05) remained significantly (P < .05) impaired at 3 months. At 6 weeks, role physical functioning, measured by the Medical Outcome Study Short Form 36, was significantly impaired (t = 2.4, P < .01). There were no significant differences in physical activity variables as measured by an RT3 accelerometer (Stayhealthy, Inc., Monrovia, CA) and self-report diary. CONCLUSIONS Persistent fatigue can hamper early recovery after CABG surgery. Tailored interventions are needed to address fatigue management and improve patient outcomes.

The effects of a symptom management intervention on symptom evaluation, physical functioning, and physical activity for women after coronary artery bypass surgery

The purpose of this subset analysis was to examine the effect of a symptom management (SM) intervention on postoperative symptom evaluation, physical functioning, and physical activity among the female participants (N = 40) of the larger parent study of coronary artery bypass graft patients aged 65 years and older. The intervention group (n = 23) had significantly lower fatigue scores at 6 weeks (Z = 1.96, P < .05) and higher levels of physical activity (Z = −1.71, P < .05) reflected in the expended kcal · kg−1 · d−1, as measured by the activity diary at 3 months after coronary artery bypass graft surgery. At 6 weeks and 3 months after surgery, there were significant correlations between cardiac surgery-related recovery symptoms (shortness of breath, fatigue, depression, incision pain, and sleep problems) and physical functioning (physical, vitality, and bodily pain functioning subscale scores), with correlations ranging from 0.31 to 0.46. Given that this was a subset analysis of a larger study, significant differences were not expected for all variables. Study findings support the need for a targeted (women-focused) and tailored (self-management recovery) intervention to assist females in recovering from coronary artery bypass graft surgery to improve symptom management, thereby enhancing physical functioning and physical activity outcomes.

Patient recovery and transitions after hospitalization for acute cardiac events: an integrative review.

Despite increased attention to providing seamless transitions after hospitalization, patients often feel unprepared, lack knowledge, and may be confused by what to expect during recovery at home after a cardiac event. Care transition after hospital discharge could be improved by informing and counseling patients more specifically about expected recovery after a cardiac event. Therefore, an integrative review of research was conducted to evaluate cardiac patients’ trajectory of recovery after hospitalization. A total of 61 studies were included in this review. Studies included were those of cardiac patients who had been hospitalized for significant cardiac events and those focused on acute coronary syndrome (n = 18), percutaneous coronary intervention (PCI) (n = 12), cardiac surgery (coronary artery bypass surgery and valve surgery; n = 25), and heart failure (n = 6). Studies included quantitative, mixed-methods, and qualitative designs, with sample sizes ranging from 4 to 2121 participants. Notwithstanding the limitations of this review, findings demonstrated that patients’ perceptions of their cardiac event evolved over time from uncertainty, fears, anxiety, and depression, which were often associated with a lack of knowledge of their cardiac condition, to a phase of self-management of their cardiac condition. Furthermore, patterns of commonly occurring symptoms and changes in functioning abilities during recovery after hospitalization were apparent among the different cardiac groups. These findings may be useful to both patients and clinicians to inform them about the recovery trajectory after a cardiac event to improve preparation for the transition from hospital to home.

Gender differences in recovery outcomes after an early recovery symptom management intervention.

BACKGROUND Despite known gender differences in recovery, few studies have examined symptom management (SM) interventions or responses by gender after coronary artery bypass surgery (CABS). OBJECTIVE The purpose of this subanalysis was to describe and evaluate differences in response by gender to an SM intervention on the presence and burden of symptoms, physical activity, and physical functioning in elderly CABS patients during the early discharge period (3 and 6 weeks after CABS, and 3 and 6 months after CABS). METHODS The parent study whose data were analyzed to examine gender differences involved a two-group, randomized clinical trial design. The 6-week early recovery SM telehealth intervention was delivered by the Health Buddy. Measures included the Cardiac Symptom Survey, a Modified 7-Day Activity Interview, an RT3 accelerometer, an Activity Diary, and the Medical Outcomes Study Short Form 36. This study was not powered for a gender × group analysis, and we used descriptive statistics, χ(2) tests, t tests, and analysis of variance for statistical analyses. RESULTS Subjects (n = 232) included 192 men and 40 women, with a mean age of 71.2 SD, 7 years. The intervention group consisted of 86 men and 23 women, and the usual care (UC) group consisted of 106 men and 17 women. Data trends suggest that the SM intervention exerted greater impact on women than on men for symptoms such as fatigue, depression, sleep problems, and pain. Again, men exhibited higher levels of physical activity than did women. However, women in the SM group generally had higher scores than did women in the UC group. CONCLUSION Although the parent study found no effect of an early recovery SM intervention, this exploratory secondary analysis indicated that women in the intervention group demonstrated more improvement in measures of physical activity than did those in the UC group. Further study, using a larger sample, is necessary to test these preliminary results.

Development and content validity testing of the Cardiac Symptom Survey in patients after coronary artery bypass grafting

BACKGROUND Patients who have undergone coronary artery bypass grafting often experience numerous symptoms after surgery. There is a need for a symptom tool for this population that is disease-specific, comprehensive, and responsive to change. AIMS The aims of this study were to describe the development and preliminary content validity testing of the Cardiac Symptom Survey (CSS), assess further content validity of the CSS through an expert panel, and assess responsiveness of the CSS to change. METHODS The original development of the CSS is described. An expert panel of four judges was used to rate the clarity of the items (content validity) and the relevance of the symptoms and items to the domain. Responsiveness to change of the CSS was assessed in a sample of 90 subjects who underwent coronary artery bypass grafting. RESULTS Percent agreement and content validity index coefficients ranged from .90 to 1.00. Repeated measures analyses of variance showed significant changes over time as hypothesized in some of the symptom evaluation and symptom response scores. CONCLUSION Support is documented for both content validity and responsiveness of the CSS.

Development of a self-efficacy instrument for coronary artery bypass graft patients.

Research related to self-efficacy has demonstrated that measures of this concept need to be specific to the behavior of interest. Self-efficacy is the degree of confidence one has to perform an activity. This article describes the development and testing of the Barnason Efficacy Expectation Scale (BEES). The instrument is a 15-item tool that uses a Likert scale to determine the coronary-artery-bypass-graft (CABG) patient’s self-efficacy related to the risk-reduction-related aspects of recovery and lifestyle adjustment following CABG surgery (physical functioning, psychosocial functioning, coronary artery disease risk factor modification and self-care management). Internal consistency reliability of the instrument was 0.93, and principal components analysis revealed a single factor (Eigenvalue = 10.59, percent variance = 70.61%). Three phases of tool development are described in the article that document satisfactory reliability and validity (face, content, criterion, and construct).

Longitudinal field comparison of the RT3 and an activity diary with cardiac patients

This study investigated reliability and validity of two methods of measuring patients’ physical activity following coronary artery bypass graft (CABG) surgery. Sixty-five patients wore an RT3 accelerometer and recorded activity in a diary at 3 weeks, 6 weeks, and 3 months postsurgery. Generalizability coefficients greater than .80 required approximately 2 to 4 days of data, fewer than reported elsewhere. Energy expenditure estimates correlated .77, .72, and .57 (p < .01), with mean RT3 estimates higher, especially when overall energy expenditure was low. Changes from 3 to 6 weeks correlated only moderately (r = .37–.46) across methods. The methods produce reliable but differing estimates of physical activity in this population. Although no method bias is evident in assessing change over time, correlations support the importance of using multiple methods.