Background: Many clinical and paraclinical studies related to coronary artery disease have been done in Vietnam in recent years. However, there have been no studies on nurses’ knowledge and practice regarding patient care after coronary angiography (CAG) or percutaneous coronary intervention (PCI). This study was conducted to assess nurses' knowledge and practice on patient’s safety after CAG or PCI and its associated factors. Methods: A descriptive cross-sectional study was conducted from December 2019 to June 2020 at the Department of Internal Cardiology, Interventional Cardiology, Intravascular Intervention, and Intensive care unit/Coronary care unit in three general and specialist hospitals in Ho Chi Minh city, Vietnam. 167 nurses who have taken care of patients after CAG or PCI were included in the study through using convenient sampling technique. A translated self-administered questionnaire was utilised. This self-reported survey achieved 100% response rate. Statistical analysis was performed by the Chi-square test (X2). Statistical significance level was at p<0.05 to determine factors related to nurses’ knowledge and practice. Prevalence ratio (PR) with 95% confidence interval (95% CI) were also used to measure the association. Results: The study findings revealed that only 36% of the study sample had a good knowledge while 78% of them had a good practice on patient’s safety after CAG or PCI. There were association between educational level, working place with the knowledge (PR=1.87-1.92, p<0.01) and practice (PR=1.18-1.35, p<0.05) on patient’s safety after CAG or PCI among Vietnamese nurses. Besides those factors, the number of years working in cardiac specialty were also found to have an association with the practice. A moderately positive correlation between the knowledge and the practice towards patient‘s safety after CAG or PCI has been identified in this study (PR=1.27, 95% CI [1.09 – 1.47], p=0.005). Conclusions: More than a half of the study sample had poor knowledge but performed good practice in some items of care for patients after CAG or PCI. There was positive association between the knowledge and practice about patient’s safety after CAG or PCI among Vietnamese registered nurses. Educational training programs for staffs working in coronary angiography or percutaneous coronary intervention is recommended to develop.

Introduction: Estimating the probability of obstructive coronary artery disease in patients undergoing noncoronary cardiac surgery should be considered compulsory. Our study sought to evaluate the prevalence of obstructive coronary artery disease in patients undergoing valvular heart surgery and to utilize predictive methodology of concomitant obstructive coronary artery disease in these patients. Methods: The retrospective study cohort was derived from a tertiary care hospital registry of patients undergoing coronary angiogram prior to valvular heart operations. Decision tree, logistic regression, and support vector machine models were built to predict the probability of the appearance of obstructive coronary artery disease. A total of 367 patients from 2016 to 2019 were analyzed. Results: The mean age of the study population was 57.3±9.3 years, 45.2% of the patients were male. Of 367 patients, 76 (21%) patients had obstructive coronary artery disease. The decision tree, logistics regression, and support vector machine models had an area under the curve of 72% (95% CI: 62% - 81%), 67% (95% CI: 56% - 77%), and 78% (95% CI: 68% - 87%), respectively. Multivariate analysis indicated that hypertension (OR 1.98; P=0.032), diabetes (OR 2.32; P=0.040), age (OR 1.05; P=0.006), and typical angina (OR 5.46; P<0.001) had significant role in predicting the presence of obstructive coronary artery disease. Conclusion: Our study revealed that approximately one-fifth of patients who underwent valvular heart surgery had concomitant obstructive coronary artery disease. The support vector machine model showed the highest accuracy compared to the other model.

Objectives: To evaluate the effectiveness and safety of the first sirolimus-eluting stent made in Vietnam (Xplosion stent) on Vietnamese patients via the following outcomes: restenosis rate in the stent and at the two heads of stent, stent occlusion rate, and mortality rate due to myocardial infarction at 6 months and 12 months following stent placement. Methods and Results: The prospective, open-label, non-randomized, longitudinal study enrolled 43 patients diagnosed with stable angina and de novo lesions with a 2.5 -3.5 mm reference diameter and ≤ 24 mm in length. The patients received one stent per branch, and some received stents in multiple branches. All patients were scheduled for angiographic follow-up at 6 months, and if subjects consented, at 12 months. The subjects' mean age was 60.05 ± 11.07 years, and many had cardiovascular risk factors, such as hypertension (83.72%), dyslipidemia (53.49%), and diabetes mellitus (25.58%). Stenting was performed on 50 lesions with a sirolimus drug-eluting stent (1.16 stent/patient on average). Of the patients, 92% had single-vessel coronary artery disease, and type B lesions (AHA) accounted for the majority (56%), with distribution on the LAD (42%), LCx (24%), and RCA (34%). The technical and procedural success rate of stent placement was 97.67%, with a very low complication rate (0%). The restenosis rate at 6 months was 0%. All patients were followed up to 12 months. Only two patients had recurrent chest pain and underwent coronary angiography; however, there was no in-stent restenosis and no need for revascularization. Therefore, the rate of chest pain recurrence after 12 months was 4.65% (2/43), and the rate of target vessel revascularization at 12 months was 0%. At 6-and 12-month follow-up, we observed no death due to unknown causes, no target-vessel myocardial infarction, and two clinically-driven re-angiographies with no need for revascularization. No additional events were reported beyond the 6-month follow-up. During the entire 12-month follow-up period, none of the patients experienced a definite or probable stent thrombosis. Conclusion: The new sirolimus-eluting stents manufactured in Vietnam use a new technology transferred from the United States. They were placed successfully and showed a sustained favorable safety profile for up to 12 months. These findings suggest that these new stents could be used in many catheterization laboratories in Viet Nam.

Left ventricular noncompaction, or noncompaction cardiomyopathy, is a rare congenital cardiomyopathy caused by the failure of the myocardial compaction. It has distinct morphological characteristics in the ventricular cavity and main cclinical manifestations are heart failure, arrhythmia, and thromboembolic complications. This paper reports on a patient who was admitted to the hospital with a diagnosis of acute myocardial infarction and severe left ventricular systolic dysfunction. During the patient's assessment and investigation, left ventricular noncompaction cardiomyopathy was diagnosed. In this literature review, we discuss the diagnostic criteria and the treatment of these patients.