Abstract
Aim. This study was conducted to determine the effect of cognitive-behavioral rehabilitation based on stress immunization training on anxiety, stress and depression in patients with coronary artery bypass graft surgery.
Background. Stress, anxiety and depression that play an important role in coronary artery disorders, are being considered as a hindrance to recovery after CABG. Providing the patient with correct coping strategies with stress seems to be helpful in preventing the recurrence.
Method. The study was a quasi-experimental with control group with pretest-posttest design. The statistical population of this study included patients who had coronary artery bypass graft surgery and referred to the Rehabilitation center of Tehran Heart Hospital, Tehran, Iran. Thirty subjects were selected by continuous sampling method and randomly assigned into experimental and control group. The instruments for data collection were “Depression, Anxiety and Stress Scale” (DASS-21), which completed before and after the intervention. The experimental group was exposed to stress immunization training in 10 sessions of 90 minutes. To analyze the data, multivariate covariance analysis, and one-variable covariance analysis were used in SPSS software.
Findings. Stress immunization training significantly influenced the anxiety (p≤0.0001; F=0.39), stress (p≤0.0001; F=0.35), and depression (p≤0.0001; F=0.68) scores of the experimental group compared to the control group.
Conclusion. Stress immunization training plays an important role in reducing negative emotions (anxiety, stress and depression) in patients with coronary artery bypass graft surgery. It is recommended to use this intervention for patients undergoing CABG.

Abstract
Aim. The purpose of this study was to examine the effect of peer education on the anxiety - of post Coronary Artery Bypass Graft patients and caregivers
Background. Patients undergoing coronary artery bypass surgery experience moderate to high anxiety, which has also been reported among their family members. Studies have shown that educating patients and their family caregivers has in many cases reduced their anxiety. Peer education and research on the effect of peers is of great importance in promoting therapeutic and caring goals.
Method. This randomized clinical trial study was performed in year 2018 in surgery wards of Rajaee Cardiovascular Medical and Research center. In this study, 60 family caregivers of patients undergoing coronary artery bypass graft surgery and their respective patients were recruited at the time of discharge from intensive care unit and entering into the surgical ward. The subjects were randomly assigned to experimental and control group. Data collection tools included demographic information questionnaire and Spielberger's "State and trait anxiety" form. Initially, patients' family caregivers who were selected as peers were trained by the researcher in three stages. Before visiting the patients by family caregivers, their anxiety and also, patients' anxiety was measured in both groups. Thereafter, the patients’ family caregivers in the control group received routine training, and the patients' family caregivers in the experimental group received peer training in two sessions by their peers. In the third step, the anxiety of patients and their family caregivers in both groups were measured on the second and fifth days after intervention. The data were analyzed in SPSS 20 software.
Findings. Before intervention, the mean scores of anxiety in the experimental and control groups were not statistically different in both patients and their family caregivers, and the mean anxiety scores in both groups were moderate to high. After intervention, the mean score of anxiety in the experimental group was significantly lower than the control group (P≤0.0001). Also, in the second and fifth days after the intervention, there was a significant difference between the experimental and control groups in the mean score of anxiety of the patients and their family caregivers (P≤0.0001).
Conclusion. Peer education seems to reduce anxiety in patients and their family caregivers after discharge from ICU. It is suggested that peer education be used as effective and low cost education to reduce patient and family caregiver anxiety.

Abstract
Aim. This study aimed to examine the effect of open visiting hours on sleep quality, anxiety, and satisfaction of patients undergoing coronary artery bypass graft surgery (CABG).
Background. The importance of visiting patients after CABG has been emphasized in various studies, but there is insufficient evidence to confirm whether restricted /open visits may have more positive or negative effects than each other.
Method. In this clinical trial study, 60 post-CABG patients, admitted to Shahid Rajaei Cardiovascular, Medical and Research center, were randomly selected and divided into experimental (n=30) and control group (n=30). Patients in experimental group received an open visiting schedule (free visiting) and those in control group experienced a regular visiting schedule (restricted visiting). Anxiety was measured on the second and fourth days of hospitalization by the Spielberger Anxiety Inventory (STAI), sleep quality was measured by Richard Campbell and satisfaction was assessed through researcher-made questionnaire on the fourth day of hospitalization. Data were analyzed using independent t-test in SPSS-20 software.
Findings. There was a statistically significant difference between control and experimental groups in terms of anxiety mean score (43.97±6.76 against 35.90±4.31, respectively) (p≤0.0001). There was also a statistically significant difference between control and experimental groups in terms of mean score of patient satisfaction (46.13±7.15 vs 32.23±4.67, respectively) (p≤0.0001). A statistically significant difference was found between control and experimental groups in terms of sleep quality mean score (2.33±0.8 vs 3.33±0.75, respectively) (p≤0.0001).
Conclusion. Open visiting can reduces anxiety, and improves sleep quality and patients' satisfaction after CABG.

Abstract
Aim. The purpose of this study was to review the importance of cardiac rehabilitation and physical activity training in the second phase of rehabilitation.
Background. Cardiac rehabilitation is defined as a comprehensive long-term program consisting of medical assessment, exercise program administration, correction of cardiovascular risk factors, training and counseling. Familiarizing nurses with the area of ​​cardiac rehabilitation and providing necessary education to patients will have a significant effect on reducing complications and improving quality of life.
Method. This review study was carried out by library and internet searches in the years 2018-2019 using the keywords “coronary artery bypass graft surgery”, “adherence to treatment”, “cardiovascular disease”, “physical activity”, “exercises at home”, “cardiac rehabilitation” and their Persian equivalents. The search was carried out in databases, search engines PubMed, SID, MagIran, Web of Sciences, Cochrane Library, CINHAL, OVID, Google Scholar, Up-to-date, and Scopus without time limit. A total of 51 articles were found in relation to the subject under study, of which, 4 articles were excluded because of duplication and 10 articles were excluded because their full texts were not available. Finally, 37 articles were included in the study.
Findings. The role of the nurse in training cardiac patients for rehabilitation is of great importance. By educating patients about the principles of rehabilitation for prevention and management of complications, an important role can be played in improving the quality of life of patients and increasing their survival.
Conclusion. Nurses' acquaintance with the principles of cardiac rehabilitation is of particular importance. It is suggested that nurses consider rehabilitation education as one of the supportive therapeutic and preventive approaches and should always be familiar with the latest guidelines in this area.

Abstract
Aim. The aim of this study was to evaluate the effect of cardiac rehabilitation training on patients' quality of life after coronary artery bypass grafting at Dr. Lavasani Hospital in Tehran.
Background. Coronary artery disease is the most common and serious chronic life-threatening disease. This disease affects many aspects of people's lives and reduces the quality of life. In many cases, coronary artery bypass graft surgery is needed to treat cardiac problems. Improving the quality of life is one of the important goals of participating in a cardiac rehabilitation program.
Method. In this one-group quasi-experimental study, 45 patients under coronary artery bypass graft surgery, hospitalized in Dr Lavasani Heart Hospital in Tehran, Iran, were selected by simple random sampling and were studied in a before-after design. Data collection tools included demographic questionnaire and Macnew Heart Disease Health-Related Quality of Life questionnaire. Cardiac rehabilitation training program was implemented in two sessions of 30 to 45 minutes with an interval of at least 24 hours at the time of hospitalization. Quality of life was measured in two stages, before the intervention and one month after the second training session. Data were analyzed in SPSS software version 25 using descriptive and inferential statistics.
Findings. The highest percentage of samples was male (57.8 percent), married (95.7 percent) and had primary education (47.8 percent). The mean age of women was 60.32±9.73 years, and the mean age of men was 60.50±12.60 years. After intervention, the mean quality of life score (128.71±4.95) increased significantly compared to the mean quality of life score before intervention (96.66±9.30) (p≤0.0001).
Conclusion. Cardiac rehabilitation in patients undergoing coronary artery bypass graft surgery can increase their quality of life. Nurses can play an important role in improving the quality of life of these patients through implementing cardiac rehabilitation training.

Abstract
Aim. The aim of this study was to examine the effect of protocol of weaning from mechanical ventilation on the gastrointestinal function in people undergoing CABG.
Background. The most common problems after cardiac surgery in the intensive care unit are change in vital signs, respiratory problems, unsuccessful separation from mechanical ventilation, and gastrointestinal problems. Due to the numerous effects that gastrointestinal problems have on the patient after cardiac surgery and also the economic burden that these complications impose on the patient and the health care system, choosing the best technique to prevent and control these problems is critical for the health care team.
Method. The present study was a randomized clinical trial conducted on 100 people undergoing CABG. They were allocated to control and experimental group based on permuted block randomization. The control group received routine way and experimental group received protocol of weaning. The groups  were compared in terms of nausea and vomiting, the time of beginning oral diet, defecation and bowel sounds before weaning 2, 6, and 12 hours after weaning from mechanical ventilation. Data were analyzed In SPSS version 23 using chi-square, Mann–Whitney U and Fisher tests.
Findings. In experimental group, there was a faster onset of bowel sounds and movements and earlier beginning of oral diet.
Conclusion. Patients who were under the protocol of weaning from mechanical ventilation had better gastrointestinal functional status compared to those who were under routine weaning.

Abstract
Aim. The aim of this literature review was to investigate the importance of adherence to diet in and nutritional recommendations for patient after coronary artery bypass graft surgery.
Background. Nutritional patterns after heart surgery are among the most important aspects of care that is provided by the nurse. Due to the importance of this issue, various studies have been conducted to focus on principles of proper nutrition after coronary artery bypass graft surgery and the necessary recommendations.
Method. The present review study was conducted through searching out databases and search engines Pub Med, SID, MagIran, Web of Sciences, Cochrane Library, CINHAL, OVID, Up-to-date, and Scopus without time limit using the keywords Coronary artery bypass graft surgery, Adherence to nutrition therapy, Cardiovascular disease, Survival rate, Complications of heart disease and nursing care, Diet, and Nutritional support. Out of a total of 103 articles, 65 articles with accessible full text entered the qualitative review stage, of which 51 articles entered the literature review.
Findings. The use of appropriate dietary approach such as consumption of fruits and vegetables, nuts and nuts, consumption of dairy products, fish and cooked and steamed foods should be the first priority of patients after coronary artery bypass graft surgery. They should avoid of fried and processed materials as much as possible.
Conclusion. Nurses' familiarity with the principles of nutrition and providing nutritional solutions, based on the latest guidelines published, to patients after coronary artery bypass graft surgery plays an important role in reducing complications and readmission of patients.

Abstract
Aim. This study was conducted to compare the effect of multidimensional spiritual therapy and stress inoculation training (SIT) on physiological and psychological coordination of heart rate variability (HRV) and depression in patients after coronary artery bypass graft (CABG) surgery.
Background. Depression and other emotional disorders play an important role in reducing the physiological and psychological coordination of heart rate in patients after coronary artery bypass graft (CABG) surgery. Depression and other emotional disorders prevent the person from recovering from the pathologic condition. It seems that preparing the patient for proper coping techniques is helpful in improving emotional disorders and preventing recurrence of disease.
Method. This was a clinical trial with two experimental and one control group. The study population included patients after CABG in Tehran Cardiac Research Center, Tehran, Iran. Thirty patients were randomly selected and assigned into three groups. The instrument of this study was the DASS-21 scale and the evaluation of physiological and psychological coordination of heart rate, which was measured before the intervention and at the end of the 10th session in groups. The first experimental group was exposed to the Meichenbaum stress inoculation training for 10 sessions of 90-minute duration, and the second experimental group received multidimensional spiritual therapy. Data were analyzed using Multivariate analysis of covariance in SPSS.
Findings. Multivariate analysis of covariance showed that SIT and multidimensional spiritual therapy interventions both have a statistically significant effect in reducing depression in one-month and three-month follow-up, compared to the control group, but their effects on reducing depression was significantly different (-2.200, P=0.002). However, no statistically significant difference was observed between experimental groups in terms of changes in physiological and psychological coordination (-0.00133, P=0.1).
Conclusion. SIT intervention seems to be less effective than multidimensional spiritual therapy in reducing depression, but its effect on changes in physiological and psychological coordination is the same as multidimensional spiritual therapy.

Abstract
Aim. This study aimed to examine the effects of preoperative preparation of patients and family caregivers on outcomes after coronary artery bypass graft surgery (CABG).
Background. Preoperative preparation can improve patients’ experience of surgery and hospitalization. However, there is limited data about how preoperative preparation affects postoperative outcomes following CABG.
Method. This non-randomized clinical trial was conducted on ninety pairs of patient/ caregiver in the time period from July to November 2018. The participants were purposively selected and non-randomly allocated to either control or experimental group. The intervention was performed one day after admission and the day before CABG in the form of an educational video, an intensive care unit tour, and an educational booklet. In both groups, on the third day after surgery, patients' delirium was assessed in the ICU and family caregivers were asked to complete a family satisfaction questionnaire. Patients and their family caregivers in both groups completed a hospital anxiety and depression questionnaire (HADS) on the first and seventh days after surgery and before discharge. Data were analyzed in SPSS version 16.0 using descriptive and inferential statistics. 
Findings. After intervention, the mean score of patients’ anxiety and depression in the intervention group was significantly less than the control group (P=0.03). After intervention, the mean score of anxiety and depression among family caregivers in the control and experimental groups were not significantly different (P=0.11). Family caregivers’ satisfaction of experimental group was significantly higher than the control group in both healthcare providers’ performance dimension (P=0.01) and comfort dimension (P=0.027). Moreover, the groups did not significantly differ from each other regarding delirium incidence (P=0.6) and length of stay in the intensive care unit (P=0.21).
Conclusion. Considering that the preparation of the patient and family caregiver on the day before CABG can reduce patients' anxiety and depression and increase the satisfaction of the family caregiver, it is recommended to use this intervention for patients and family caregivers before CABG.

Abstract
Aim. The present study was conducted to examine the effect of an empowerment program on the life satisfaction of patients with coronary artery disease.
Background. Because of the chronic and progressive nature of coronary artery disease, patients suffer frequent problems and relapses. Heart disease is considered as one of the debilitating diseases, and as such adversely affects the patient's self-care, quality of life, and health status.
Method. In this randomized clinical trial, 84 people with coronary artery disease, admitted to post-CCU wards in Tehran's Center for Heart diseases, were recruited in 2017. The study subjects were selected based on inclusion criteria. After explaining the study objectives and obtaining written signed consents, patients were assigned to experimental and control groups by blocking random allocation. Both groups completed questionnaires for demographic data and disease history, and Life Engagement Test. The Magic Empowerment Program was performed for experimental group as three workshop sessions for three consecutive days. Intervention continued after patients' discharge from the hospital through phone calls once a week for eight weeks. The Life Engagement Test was completed by the researcher for both groups, data were analyzed in SPSS-16 using descriptive and inferential statistics.
Findings. The results showed no statistically significant difference between groups in terms of demographic variables and disease history. Before intervention, there was no statistically significant difference between the mean scores of life satisfaction of experimental and control group and the two groups were homogeneous. After intervention, a statistically significant difference was observed between the groups in mean score of Life Engagement (P≤0.0001). The mean score of life satisfaction in experimental group, before and after the intervention was statistically significant (P≤0.0001), while in the control group there was no statistically significant difference.
Conclusion. The empowerment program increased life satisfaction of patients with coronary artery disease. Nurses can benefit from the empowerment program to improve life satisfaction, which is one of the dimensions of psychosocial health, in these patients.

Abstract
Aim. The aim of this study was to determine the moderating role of affective temperament in the relationship between biomarkers (troponin, white blood cell count, and neutrophil to lymphocyte ratio) and the severity of coronary artery disease.
Background. Coronary artery disease is the leading cause of death among adults worldwide and is considered as an inflammatory disease. Recent studies, in addition to biological factors, have focused on the role of psychological factors in the incidence and severity of this disease.
Method. In this study, 200 patients (145 males, 55 females) with coronary artery disease admitted to Shahid Rajaei Hospital in Tehran in 2018-2019 were selected by continuous sampling. Participants were asked to complete the positive and negative affectivity scale (Besharat, 2014). Also, the number of biomarkers was assessed through blood tests and the number of involved vessels was assessed through angiography and diagnosis by a specialist physician.
Findings. The results of hierarchical multiple regression showed that in the first step, 62 percent of the variance of coronary artery disease was predicted by biomarkers, and by entering the interaction between predictor variables (severity of coronary artery disease) and moderating variables (positive affectivity and negative affectivity), explanation of variance of the coronary artery disease increased by 9 percent and reached to 71 percent.
Conclusion. Based on the findings of the study, affective temperament affects the relationship between biomarkers and the severity of coronary artery disease, and therefore, as a psychological factor, could plays an important role in preventing coronary artery disease and decrease the number of deaths and the annual cost of this disease.

Abstract
Aim. The aim of this study was to compare the effect of integrative behavioral couple therapy, narrative couple therapy, and couple schema therapy on affective capital and depression among people with coronary artery disease.
Background. Coronary artery disease is one of the heart diseases that can cause problems for couples.
Method. This was a semi-experimental study with a pretest and posttest design and control group. The statistical population consisted of people with coronary artery disease and their spouses out of which 64 couples were selected by purposive sampling method and randomly assigned to three experimental groups and a control group (16 couples in each group). Affective Capital Questionnaire and Depression Inventory of Beck was used to assess dependent variables in two stages. The three intervention groups were each treated for 8 sessions of 90 minutes and the control group did not receive any treatment. The data were analyzed in SPSS by descriptive and inferential statistics.
Findings. In terms of affective capital, there was a statistically significant difference of integrative behavioral couple therapy, narrative couple therapy and couple schema therapy with the control group (p­≤0.001), and of integrative behavioral couple therapy with narrative couple therapy and couple schema therapy (p­≤0.001). For depression, there was a statistically significant difference of the three intervention groups with the control group, and of integrated behavioral couple therapy and couple schema therapy with couple narrative therapy (p<0.05).
Conclusion. According to the results, integrative behavioral couple therapy, couple schema therapy and narrative couple therapy are effective in increasing affective capital and reducing depression in people with coronary artery disease and their spouses. It is recommended that these three interventions be used for these patients and their spouses in cardiovascular disease centers.
 

Abstract
Aim. The aim of this study was to examine the effect of cognitive-behavioral therapy on depression, anxiety, and stress in patients after coronary artery bypass graft surgery.
Background. Coronary artery bypass graft surgery, like other surgeries, is stressful for the patient, and depression, anxiety, and stress are common important disorders in these patients. In this regard, one of the effective psychotherapy methods to reduce negative psychological factors and prevent recurrence of the disease is cognitive-behavioral therapy.
Method. The design of the present study was quasi-experimental with a pretest-posttest design with a control group. The statistical population of the study included all patients after coronary artery bypass graft surgery in selected AJA hospital in Tehran, Iran. Based on convenience sampling, 30 people were selected and randomly allocated to experimental (n=15) and control (n=15) group. They responded to the Depression, Anxiety and Stress Questionnaire (DASS-21) and underwent 15 sessions of psychotherapy. The experimental and control group were homogeneous in terms of age, education, as well as duration of hospital stay and absence of other chronic diseases. The univariate analysis of covariance was performed using SPSS-23.
Findings. The results showed that depression, anxiety and stress of the experimental group significantly reduced in the post-test compared to those of control group.
Conclusion. In addition to medical interventions, cognitive-behavioral therapy can also be used for patients after coronary artery bypass graft surgery to reduce depression, anxiety and stress and prevent recurrence of the disease. Special attention can also be paid to the psychological factors that cause or exacerbate cardiovascular disease.

Abstract
Aim. The aim of this study was to compare the effect of narrative couple therapy, couple schema therapy and integrative behavioral couple therapy on hope and perceived stress among patients with coronary artery disease and their spouses.
Background. Coronary artery disease is one of the heart diseases that can make couples face problems and need help.
Methods. This research was a semi-experimental study with a pretest and posttest design and with a control group. The statistical population was people with coronary artery disease and their spouses in the winter of 2021. Sixty four couples were selected by purposive sampling method and randomly assigned to three experimental groups and a control group (16 couples for each group). Hope scale of Snyder and perceived stress of Leung et al. were used to assess dependent variables in two stages. The three intervention groups were each treated for 8 sessions of 90 minutes and the control group did not receive any intervention. The data were analyzed by analysis of covariance and post-hoc Bonferroni test.
Findings. The results showed that there was a statistically significant difference of integrative behavioral couple therapy and couple schema therapy with the control group in terms of hope (P≤0.0001), but there was no statistically significant difference between the narrative couple therapy and control group and between three interventions. About the perceived stress, the results showed that there was a statistically significant difference of integrative behavioral couple therapy, narrative couple therapy and couple schema therapy with the control group (p≥0.05).
Conclusion. Considering the effect of integrative behavioral couple therapy and couple schema therapy in increasing hope and effect of the mentioned two interventions and narrative couple therapy in reducing perceived stress among people with coronary artery disease and their spouses. It is recommended to use these interventions in cardiovascular treatment centers.

Abstract
Aim. The aim of this study was to compare the effect of acceptance and commitment-based therapy and emotion regulation education on chronic pain and self-care in women with coronary artery disease.
Background. Research shows that coronary heart disease is one of the leading causes of death and disability in the world, which reduces the useful efficiency of people. Psychological factors can change many aspects of patients' lives and relationships.
Method. The research design was quasi-experimental pre-test-post-test with control group. The statistical population in this study included all women with coronary artery disease referred to Tabriz Heart Hospital in 2020. Women who had inclusion criteria were selected and randomly assigned to the first experimental group (n=15), the second experimental group (n=15) and the control group (n=15). The first experimental group (emotion regulation education) was subjected to 12 sessions of 90-minute duration (three sessions per week), The second experimental group (acceptance and commitment-based therapy) received 8 sessions of 90-minute duration, and the control group did not receive any intervention. The chronic pain scale of Von Korff et al. and the self-care scale of Rigel et al. were used to collect the data. Data were analyzed by multivariate analysis of covariance and LSD post hoc test in SPSS Version 21.
Findings. The results showed that treatment based on acceptance and commitment and emotion regulation education have an effect on chronic pain and self-care of patients with coronary artery occlusion (P ≤0.0001), as they reduced chronic pain and improve patients' self-care. The results also showed that acceptance and commitment therapy has a greater effect on chronic pain and patients' self-care than emotion regulation education.
Conclusion. Attention to acceptance and commitment therapy and emotion regulation education can play a role in reducing the psychological problems of women with coronary artery disease.

Abstract
Aim. This review study was conducted with the aim of highlighting the importance of a preoperative preventive approach in the recovery of patients undergoing coronary artery bypass surgery.
Background. With the increase in the number of patients who are candidated for heart surgery, improving the health status before the operation is of great importance to optimize the results after the operation. This review has been conducted with the aim of evaluating the evidence related to the pre-rehabilitation of patients undergoing coronary artery bypass surgery.
Method. The present literature review was conducted by searching out library resources and databases, Scopus, Chochrane Library, Magiran, SID, PubMed, Up-to-date, OVID, CINAHL, and Web of Science with the keywords, coronary artery bypass surgery, pre-rehabilitation, cardiovascular disease and their Persian equivalents without time limit. From a total of 104 articles, 63 full texts articles entered the review stage, of which 17 articles entered the literature review.
Findings. The findings indicate the favorable effects of pre-rehabilitation on improving the quality of life and preventing complications in the early postoperative period. Pre-rehabilitation programs should adopt multifaceted approaches including nutrition, exercise, and anxiety reduction to improve patient resilience in the preoperative period. The pre-operative period is a critical opportunity to implement pre-rehabilitation interventions for vulnerable patients awaiting cardiac surgery.
Conclusion. Cardiac pre-rehabilitation includes a wide range of preventive interventions that can be taught by nurses to patients undergoing cardiac surgery. Pre-rehabilitation requires an interdisciplinary approach, because it suggests a change from the current model of health care and transformation from one-dimensional care to interdisciplinary care, which can be an effective tool for the medical and nursing system in timely identification of physical and mental disorders in initial preoperative assessment, preoperative education and management, as well as prevention of postoperative complications.

Abstract
Aim. This study aimed to compare the effect of Adaptive Support Ventilation (ASV) and Synchronized Intermittent Mandatory Ventilation-Pressure Support (SIMV-PS) modes on consequence of weaning off patients from mechanical ventilator after coronary artery bypass surgery
Background. The ventilation mode used for respiratory support in patients after coronary artery bypass graft surgery is very important. In addition to avoiding pressure on patient's sternotomy incision, the ventilation mode should also provide the possibility of rapid weaning of patient to avoid complications caused by long-term ventilation.
Method. In a semi-experimental study, 26 patients were ventilated with ASV as the experimental group and 26 patients were ventilated with SIMV-PS mode as the control group after coronary artery bypass graft surgery in Rajaie Cardiovascular Medical and Research Center, Tehran, Iran. Mechanical ventilation time and endotracheal tube removal time, hemodynamic variables, and arterial blood gas analysis were compared between the two groups. Data were analyzed using an independent t-test, repeated measures ANOVA and chi-square.
Findings. Out of 52 patients, 36 (69.2 percent) were male and 16 (30.8 percent) were female. The mean time for the endotracheal tube removal was 89.42±33.83 minutes in the experimental group and 101.53±44.91 minutes in control group, which did not have a statistically significant difference (p=0.843). The mean duration of mechanical ventilation of patients in the experimental group was 483.84±158.153 minutes and in the control group, it was 541.92±257.81 minutes, which were not statistically different (p=0.332).
Conclusion. The use of ASV mode for mechanical ventilation after coronary artery bypass graft did not affect reducing the duration of mechanical ventilation and the time of endotracheal tube removal compared to SIMV-PS mode. Therefore, the use of ASV mode for respiratory support of patients undergoing coronary artery bypass surgery should be considered according to the patient's condition and the nurses' expertise.