Charlotte Brun Thorup

Precautions related to midline sternotomy in cardiac surgery A review of mechanical stress factors leading to sternal complications

Background: After midline sternotomy patients are instructed on activity precautions to avoid sternal wound complications. We questioned how restrictive these precautions must be, since they can lead to a postoperative decrease in quality of life. Aims: To identify mechanical stress factors causing sternal instability and infection in order to create evidence based guidelines for activity following sternotomy. Methods: Literature review. Results: No evidence was found to support weight limitation regarding activity, as long as the upper arms are kept close to the body and activity is within a pain-free range. Recommendations: Avoid stretching both arms backwards at the same time (10 days); loaded activities should be done with the elbows close to the body (eight weeks); only move arms within a pain-free range; use leg rolling with counterweighing when getting in and out of bed; when coughing cross the arms in a “self-hugging” posture; supportive bra or vest is recommended when breast cup ≥ D, body mass index ≥ 35 or frequent cough. Conclusion: This study provides insights into mechanical stress factors acting upon sternum and the overlying skin. Recommendations on activity precautions based on these finding have a patient supportive approach focusing on possibilities and not restrictions.

Cardiac Patients’ Walking Activity Determined by a Step Counter in Cardiac Telerehabilitation: Data From the Intervention Arm of a Randomized Controlled Trial

Background Walking represents a large part of daily physical activity. It reduces both overall and cardiovascular diseases and mortality and is suitable for cardiac patients. A step counter measures walking activity and might be a motivational tool to increase and maintain physical activity. There is a lack of knowledge about both cardiac patients’ adherence to step counter use in a cardiac telerehabilitation program and how many steps cardiac patients walk up to 1 year after a cardiac event. Objective The purpose of this substudy was to explore cardiac patients’ walking activity. The walking activity was analyzed in relation to duration of pedometer use to determine correlations between walking activity, demographics, and medical and rehabilitation data. Methods A total of 64 patients from a randomized controlled telerehabilitation trial (Teledi@log) from Aalborg University Hospital and Hjoerring Hospital, Denmark, from December 2012 to March 2014 were included in this study. Inclusion criteria were patients hospitalized with acute coronary syndrome, heart failure, and coronary artery bypass grafting or valve surgery. In Teledi@log, the patients received telerehabilitation technology and selected one of three telerehabilitation settings: a call center, a community health care center, or a hospital. Monitoring of steps continued for 12 months and a step counter (Fitbit Zip) was used to monitor daily steps. Results Cardiac patients walked a mean 5899 (SD 3274) steps per day, increasing from mean 5191 (SD 3198) steps per day in the first week to mean 7890 (SD 2629) steps per day after 1 year. Adherence to step counter use lasted for a mean 160 (SD 100) days. The patients who walked significantly more were younger (P=.01) and continued to use the pedometer for a longer period (P=.04). Furthermore, less physically active patients weighed more. There were no significant differences in mean steps per day for patients in the three rehabilitation settings or in the disease groups. Conclusions This study indicates that cardiac telerehabilitation at a call center can support walking activity just as effectively as telerehabilitation at either a hospital or a health care center. In this study, the patients tended to walk fewer steps per day than cardiac patients in comparable studies, but our study may represent a more realistic picture of walking activity due to the continuation of step counter use. Qualitative studies on patients’ behavior and motivation regarding step counter use are needed to shed light on adherence to and motivation to use step counters. Trial Registration ClinicalTrails.gov NCT01752192; https://clinicaltrials.gov/ct2/show/NCT01752192 (Archived by WebCite at http://www.webcitation.org/6fgigfUyV)

Pedometer use and self-determined motivation for walking in a cardiac telerehabilitation program: a qualitative study

BackgroundExercise-based cardiac rehabilitation reduces morbidity and mortality. Walking is a convenient activity suitable for people with cardiac disease. Pedometers count steps, measure walking activity and motivate people to increase physical activity. In this study, patients participating in cardiac telerehabilitation were provided with a pedometer to support motivation for physical activity with the purpose of exploring pedometer use and self-determined motivation for walking experienced by patients and health professionals during a cardiac telerehabilitation program.MethodsA qualitative research design consisting of observations, individual interviews and patient documents made the basis for a content analysis. Data was analysed deductively using Self Determination Theory as a frame for analysis and discussion, focusing on the psychological needs of autonomy, competence and relatedness. Twelve cardiac patients, 11 health professionals, 6 physiotherapists and 5 registered nurses were included.ResultsThe pedometer offered independence from standardised rehabilitation since the pedometer supported tailoring, individualised walking activity based on the patient’s choice. This led to an increased autonomy. The patients felt consciously aware of health benefits of walking, and the pedometer provided feedback on walking activity leading to an increased competence to achieve goals for steps. Finally, the pedometer supported relatedness with others. The health professionals’ surveillance of patients’ steps, made the patients feel observed, yet supported, furthermore, their next of kin appeared to be supportive as walking partners.ConclusionCardiac patients’ motivation for walking was evident due to pedometer use. Even though not all aspects of motivation were autonomous and self determined, the patients felt motivated for walking. The visible steps and continuous monitoring of own walking activity made it possible for each individual patient to choose their desired kind of activity and perform ongoing adjustments of walking activity. The immediate feedback on step activity and the expectations of health benefits resulted in motivation for walking. Finally, pedometer supported walking made surveillance possible, giving the patients a feeling of being looked after and supported.Trial registrationCurrent study is a part of The Teledi@log project.

Accuracy of a step counter during treadmill and daily life walking by healthy adults and patients with cardiac disease

Background Step counters have been used to observe activity and support physical activity, but there is limited evidence on their accuracy. Objective The purpose was to investigate the step accuracy of the Fitbit Zip (Zip) in healthy adults during treadmill walking and in patients with cardiac disease while hospitalised at home. Methods Twenty healthy adults aged 39±13.79 (mean ±SD) wore four Zips while walking on a treadmill at different speeds (1.7–6.1 km/hour), and 24 patients with cardiac disease (age 67±10.03) wore a Zip for 24 hours during hospitalisation and for 4 weeks thereafter at home. A Shimmer3 device was used as a criterion standard. Results At a treadmill speed of 3.6 km/hour, the relative error (±SD) for the Zips on the upper body was −0.02±0.67 on the right side and −0.09 (0.67) on the left side. For the Zips on the waist, this was 0.08±0.71 for the right side and -0.08 (0.47) on the left side. At a treadmill speed of 3.6 km/hour and higher, the average per cent of relative error was <3%. The 24-hour test for the hospitalised patients showed a relative error of −47.15±24.11 (interclass correlation coefficient (ICC): 0.60), and for the 24-hour test at home, the relative error was −27.51±28.78 (ICC: 0.87). Thus, none of the 24-hour tests had less than the expected 20% error. In time periods of evident walking during the 24 h test, the Zip had an average per cent relative error of <3% at 3.6 km/hour and higher speeds. Conclusions A speed of 3.6 km/hour or higher is required to expect acceptable accuracy in step measurement using a Zip, on a treadmill and in real life. Inaccuracies are directly related to slow speeds, which might be a problem for patients with cardiac disease who walk at a slow pace.

Patient-reported outcomes are independent predictors of one-year mortality and cardiac events across cardiac diagnoses: Findings from the national DenHeart survey

Aims Patient-reported quality of life and anxiety/depression scores provide important prognostic information independently of traditional clinical data. The aims of this study were to describe: (a) mortality and cardiac events one year after hospital discharge across cardiac diagnoses; (b) patient-reported outcomes at hospital discharge as a predictor of mortality and cardiac events. Design A cross-sectional survey with register follow-up. Methods Participants: All patients discharged from April 2013 to April 2014 from five national heart centres in Denmark. Main outcomes Patient-reported outcomes: anxiety and depression (Hospital Anxiety and Depression Scale); perceived health (Short Form-12); quality of life (HeartQoL and EQ-5D); symptom burden (Edmonton Symptom Assessment Scale). Register data: mortality and cardiac events within one year following discharge. Results There were 471 deaths among the 16,689 respondents in the first year after discharge. Across diagnostic groups, patients reporting symptoms of anxiety had a two-fold greater mortality risk when adjusted for age, sex, marital status, educational level, comorbidity, smoking, body mass index and alcohol intake (hazard ratio (HR) 1.92, 95% confidence interval (CI) 1.52–2.42). Similar increased mortality risks were found for patients reporting symptoms of depression (HR 2.29, 95% CI 1.81–2.90), poor quality of life (HR 0.46, 95% CI 0.39–0.54) and severe symptom distress (HR 2.47, 95% CI 1.92–3.19). Cardiac events were predicted by poor quality of life (HR 0.71, 95% CI 0.65–0.77) and severe symptom distress (HR 1.58, 95% CI 1.35–1.85). Conclusions Patient-reported mental and physical health outcomes are independent predictors of one-year mortality and cardiac events across cardiac diagnoses.

Mental health is a risk factor for poor outcomes in cardiac patients: Findings from the national DenHeart survey

OBJECTIVE To explore (i) the prevalence of cardiac risk factors (obesity, smoking, excessive alcohol consumption and medication non-adherence) among cardiac patients with depression and anxiety, (ii) associations between depression and anxiety scores and cardiac risk factors and (iii) the association of depression and anxiety and cardiac risk factors with mortality, and their population attributable risk. METHODS A national cross-sectional study using patient-reported outcomes at discharge and national register data. For one year (April 15th 2013 to April 15th 2014) all patients discharged or transferred from the five Danish Heart Centres were included in the study. A total of 14,239 patients answered the HADS questionnaire, response rate 51%. RESULTS Mean age was 64.8 years and 69% were male. Patients with depression or anxiety (HADS-D or HADS-A score ≥ 8) had 30% and 45%, respectively, higher odds of being current smokers; 19% and 37% higher odds of being obese and 31% and 24% higher odds of excessive alcohol consumption. Depressive patients had 34% higher odds of being non-adherent to their medication. At one-year follow-up, patients with depression (HADS-D score ≥ 11) had the highest attributable risk associated with mortality followed by: smoking, ischemic heart disease, anxiety, diabetes, hypertension chronic obstructive pulmonary disease and excessive alcohol consumption. CONCLUSION Depression and anxiety in patients with cardiac disease is associated with cardiac risk behaviour such as smoking, obesity, excessive alcohol consumption and medication non-adherence. Depression and anxiety have an attributable risk associated with mortality that is comparable to other well-known risk factors such as smoking.

Hospitalised patients' experiences during Negative Pressure Wound Therapy due to surgical site infection after vascular and cardiac surgery

Surgical site infections that develop after vascular and cardiac surgery are often treated with Negative Pressure Wound Therapy (NPWT). Due to the severity of the infection and risk of bleeding, this NPWT often requires hospitalisation. Fourteen patients were selected for qualitative interviews to investigate their experiences and the meaning of patient participation during hospitalisation with NPWT. Results show that hospitalisation induces tension between an intrusion of privacy and being part of a community. Patients do not feel ill nor are considered ill. They feel minimised, lack participation and miss continuity, yet they still accept their circumstances by adjusting to hospital routines and treatment. The hospitals organisational framework compromises patient participation, yet patients still participate in supporting their own wound healing. They worry, are bored, lack a clear time horizon, and appear to be in an apathetic mood despite having significant time on their hands. In conclusion, the tension between a patients privacy and sense of community, as well as involuntary participation in other patients’ lives, compromises dignity and increases stress. Wound healing appears to be prolonged due to fasting, inactivity and stress. Self‐reliant patients are at risk of being minimised and lack adequate emotional care, and the hospitals organisational framework hampers patient feelings of involvement and participation.

Cardiac surgery patients’ e-health literacy and their use of a digital portal

Objective: To determine how cardiac patients use the Activeheart.dk digital toolbox Methods: Mixed-methods study. A total of n = 33 cardiac surgical patients were enrolled in a study, which encouraged use of the Activeheart portal for 4 weeks after discharge. Patients were surveyed with respect to their demographic characteristics, e-health literacy skills, use of the Internet and use of the portal. In addition to the questionnaire survey, qualitative interviews were conducted with six randomly selected patients in order to study users’ experiences with and use of the portal. Results: Quantitative results showed no relation between cardiac patients’ prior e-health literacy skills and their use of the portal. Approximately 25 out of 31 patients stated that they had the skills to seek, locate and use health information on the Internet. Among the 17 patients who completed the first and second questionnaires, nine rarely used Activeheart.dk, four used it several times per month, and four several times per week. In 10 out of 16 replies, Activeheart.dk was rated as relevant or very relevant. Themes from the qualitative interviews revealed that the effects of medication and emotional, physical and cognitive changes had a higher impact on the use of the portal than prior e-health literacy skills. Conclusion: While participants’ e-health literacy skills ratings were high, and while participants stated that the content of the portal was relevant, their actual use of the portal remained limited. No relationship was found between participants’ e-health literacy skills and their use of the portal. Factors such as patient motivation, resources and timing of the intervention’s introduction seemed to be of greater importance.

Both mental and physical health predicts one year mortality and readmissions in patients with implantable cardioverter defibrillators: findings from the national DenHeart study

Background: Although highly effective in preventing arrhythmic death, there is a high prevalence of anxiety, depression and reduced quality of life among patients who have received an implantable cardioverter defibrillator (ICD). Whether mortality, ICD shock and readmission are predicted by patient-reported outcomes is unknown. Aim: The aim of this study was to describe patient-reported outcomes among patients with ICDs compared by: ICD indication and generator type (ICD or cardiac resynchronisation therapy ICD), and to determine whether patient-reported outcomes at discharge predict mortality, ICD therapy and readmission. Methods: A national cross-sectional survey at hospital discharge (n=998) with register follow-up. Patient-reported outcomes included the Hospital Anxiety and Depression Scale, Short Form-12, HeartQoL, EQ-5D and Edmonton Symptom Assessment Scale. Register data: ICD therapy, readmissions and mortality within one year following discharge. Results: Patients with primary prevention ICDs had significantly worse patient-reported outcomes at discharge than patients with secondary prevention ICDs. Likewise, patients with cardiac resynchronisation therapy ICDs had significantly worse patient-reported outcomes at discharge than patients without cardiac resynchronisation therapy. One-year mortality was predicted by patient-reported outcomes, with the highest hazard ratio (HR) being anxiety (HR 2.02; 1.06–3.86), but was not predicted by indication or cardiac resynchronisation therapy. ICD therapy and ventricular tachycardia/ventricular fibrillation were not predicted by patient-reported outcomes, indication or cardiac resynchronisation therapy. Overall, patient-reported outcomes predicted readmissions, e.g. symptoms of anxiety and depression predicted all readmissions within 3 months (HR 1.50; 1.13–1.98) and 1.47 (1.07–2.03), respectively). Conclusion: Patients with primary indication ICDs and cardiac resynchronisation therapy ICDs report worse patient-reported outcomes than patients with secondary indication and no cardiac resynchronisation therapy. Patient-reported outcomes such as mental health, quality of life and symptom burden predict one-year mortality and acute and planned hospital readmissions.