Aminu Arzet1, Wilbert Sibanda2, D P Naidoo3, Ponnusamy Somalingum4. 1. Department of Medicine, Nelson Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa. Email: aminuarzet@gmail.com. 2. Department of Public Health, Nelson Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa. 3. Department of Cardiology, Nelson Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa. Email: naidood.@ukzn.ac.za. 4. Department of Cardiology, Nelson Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa.
Abstract
BACKGROUND: Patients with coronary artery disease (CAD) are prone to depression, and its presence is associated with poor adverse cardiac outcomes. Although lifestyle modification (LSM) has been shown to be beneficial in managing depression in patients with CAD, it is not known whether the mode of cardiac intervention [(coronary artery bypass graft surgery (CABG) versus percutaneous coronary intervention (PCI)] influences the outcome. OBJECTIVES: We examined the prevalence of depression among myocardial infarction (MI) patients after revascularisation and compared the effect of LSM on incidence of depression in patients who underwent CABG versus PCI. METHODS: We evaluated the risk-factor profile, depression characteristics and lifestyle changes of 100 consecutive participants undergoing coronary revascularisation over a 15-month period (January 2017 to May 2018). The Beck depression inventory II (BDI-II) was used to assess depression and the Goldin leisure-time exercise (GLTE) questionnaire to assess physical activity (PA). RESULTS: One hundred patients were recruited (mean age: males 60.73 ± 4.52 years, females 60.29 ± 3.64 years) but five dropped out, leaving 95 patients for complete analysis. Most of the patients were low-income earners [53 (53.0%)], and 21 (21.0%) had tertiary-level education. The majority had multiple CAD risk factors and co-morbidities (79.0%). Prior to the LSM programme, 51 patients (51.0%) had depression and depressive traits [CABG 34 (66.7%) vs PCI 17 (33.3%), p = 0.047]. After LSM the overall prevalence of depression and depressive traits fell to 33 patients (34.7%) [PCI eight (23.0%) vs CABG 25 patients (72.0%), p = 0.001]. The mean depression scores also fell from 21.11 ± 7.75 to 14.98 ± 9.61 (p = 0.002). At baseline, PCI patients were more physically active compared to CABG patients [three (60.0%) vs two patients (40.0%), respectively, p = 0.715]. After LSM, more PCI patients undertook PA compared to CABG subjects [24 (60.0%) vs 14 patients (35.0%), respectively, p = 0.012]. The PA score was also higher among the PCI group compared to the CABG group [14.16 ± 9.73 vs 9.40 ± 10.94, respectively, p = 0.024]. In fully compliant subjects, the benefit derived was similar regardless of the mode of intervention [OR 1.10, 95% CI: 0.78-4.23, p = 0.191]. Using multivariate analysis, the main predictors of depression and depressive traits were female gender (OR 3.29, 95% CI: 1.51-11.03, p = 0.008), CABG (OR 1.86, 95% CI: 1.68-5.77, p = 0.003), heart failure (OR 2.65, 95% CI: 5.87-13.62, p = 0.000), kidney failure (OR 1.41, 95% CI: 1.30-5.23, p = 0.041), atrial fibrillation (OR 1.60, 95% CI: 1.40-4.77, p = 0.023), low PA (OR 1.97, 95%, CI: 11.23-33.20, p = 0.000), previous history of depression (OR 8.99, 95% CI: 1.90-7.89, p = 0.002) and low income (OR 2.21, 95% CI: 1.40-2.85, p = 0.000). CONCLUSIONS: Depression and depressive traits are common among subjects undergoing coronary revascularisation, more so among CABG than PCI participants. LSM reduced the prevalence of depression and depressive traits, with fully compliant CABG versus PCI groups deriving nearly the same benefits from the LSM regime. No significant reduction in incidence of depression was recorded among LSM partly compliant patients. This study suggests that failure to implement lifestyle changes and engage in PA are major barriers to managing depression after coronary revascularisation.
BACKGROUND: Patients with coronary artery disease (CAD) are prone to depression, and its presence is associated with poor adverse cardiac outcomes. Although lifestyle modification (LSM) has been shown to be beneficial in managing depression in patients with CAD, it is not known whether the mode of cardiac intervention [(coronary artery bypass graft surgery (CABG) versus percutaneous coronary intervention (PCI)] influences the outcome. OBJECTIVES: We examined the prevalence of depression among myocardial infarction (MI) patients after revascularisation and compared the effect of LSM on incidence of depression in patients who underwent CABG versus PCI. METHODS: We evaluated the risk-factor profile, depression characteristics and lifestyle changes of 100 consecutive participants undergoing coronary revascularisation over a 15-month period (January 2017 to May 2018). The Beck depression inventory II (BDI-II) was used to assess depression and the Goldin leisure-time exercise (GLTE) questionnaire to assess physical activity (PA). RESULTS: One hundred patients were recruited (mean age: males 60.73 ± 4.52 years, females 60.29 ± 3.64 years) but five dropped out, leaving 95 patients for complete analysis. Most of the patients were low-income earners [53 (53.0%)], and 21 (21.0%) had tertiary-level education. The majority had multiple CAD risk factors and co-morbidities (79.0%). Prior to the LSM programme, 51 patients (51.0%) had depression and depressive traits [CABG 34 (66.7%) vs PCI 17 (33.3%), p = 0.047]. After LSM the overall prevalence of depression and depressive traits fell to 33 patients (34.7%) [PCI eight (23.0%) vs CABG 25 patients (72.0%), p = 0.001]. The mean depression scores also fell from 21.11 ± 7.75 to 14.98 ± 9.61 (p = 0.002). At baseline, PCI patients were more physically active compared to CABG patients [three (60.0%) vs two patients (40.0%), respectively, p = 0.715]. After LSM, more PCI patients undertook PA compared to CABG subjects [24 (60.0%) vs 14 patients (35.0%), respectively, p = 0.012]. The PA score was also higher among the PCI group compared to the CABG group [14.16 ± 9.73 vs 9.40 ± 10.94, respectively, p = 0.024]. In fully compliant subjects, the benefit derived was similar regardless of the mode of intervention [OR 1.10, 95% CI: 0.78-4.23, p = 0.191]. Using multivariate analysis, the main predictors of depression and depressive traits were female gender (OR 3.29, 95% CI: 1.51-11.03, p = 0.008), CABG (OR 1.86, 95% CI: 1.68-5.77, p = 0.003), heart failure (OR 2.65, 95% CI: 5.87-13.62, p = 0.000), kidney failure (OR 1.41, 95% CI: 1.30-5.23, p = 0.041), atrial fibrillation (OR 1.60, 95% CI: 1.40-4.77, p = 0.023), low PA (OR 1.97, 95%, CI: 11.23-33.20, p = 0.000), previous history of depression (OR 8.99, 95% CI: 1.90-7.89, p = 0.002) and low income (OR 2.21, 95% CI: 1.40-2.85, p = 0.000). CONCLUSIONS: Depression and depressive traits are common among subjects undergoing coronary revascularisation, more so among CABG than PCI participants. LSM reduced the prevalence of depression and depressive traits, with fully compliant CABG versus PCI groups deriving nearly the same benefits from the LSM regime. No significant reduction in incidence of depression was recorded among LSM partly compliant patients. This study suggests that failure to implement lifestyle changes and engage in PA are major barriers to managing depression after coronary revascularisation.
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