Background: Acute coronary syndrome (ACS) remains a cause of high morbidity and mortality among adults, despite advances in treatment. Treatment modality and outcomes of ACS mainly depend on the time yielded since the onset of symptoms. Prehospital delay is the time between the onset of myocardial ischemia/infarction symptoms and arrival at the hospital, where either pharmacological or interventional revascularization is available. This delay remains unacceptably long in many countries worldwide, including Bangladesh. The current study investigates several sociodemographic characteristics as well as clinical, social, and treatment-seeking behaviors, with an aim to uncover the factors responsible for the decision time to get medical help and home-to-hospital delay. Materials and Methods: A prospective cross-sectional study was conducted between July 2019 and June 2020 in 21 district hospitals and 6 medical college hospitals where cardiac care facilities were available. The population selected for this study was patients with ACS who visited the studied hospitals during the study period. Following confirmation of ACS, a semi-structured data sheet was used to collect the patient data and was subsequently analyzed. Results: This study evaluated 678 ACS patients from 30 districts. The majority of the patients were male (81.9%), married (98.2%), rural residents (79.2), middle-aged (40–60 years of age) (55.8%), low-income holders (89.4%), and overweight (56.9%). It was found that 37.5% of the patients received their first medical care after 12 h of first symptom presentation. The study found that the patients’ age, residence, education, and employment status were significant factors associated with prehospital delay. The patients with previous myocardial infarction (MI) and chest pain arrived significantly earlier at the hospital following ACS onset. Location of symptom onset, first medical contact with a private physician, distance from symptom onset location to location of first medical contact, the decision about hospitalization, ignorance of symptoms, and mode of transportation were significantly associated with prehospital delay. Conclusions: Several factors of prehospital delay of the ACS patients in Bangladesh have been described in this study. The findings of this study may help the national health management system identify the factors related to treatment delay in ACS and thus reduce ACS-related morbidity and mortality.

Background: Left main coronary artery disease constitutes highest risk lesion subset of CAD population. Flow dynamics and pathophysiology in the left main coronary artery are different from that of the other coronary arteries. So traditional risk factors might interact differently with left main artery resulting in different clinical and angiographic characteristics compared to others. Anatomic pattern evaluation in left main coronary artery disease is important in deciding best management options. However, their pattern and profiles were variably shown in different studies with discrepant Results suggesting geographic variation and lead to evaluation of characteristics in our own population. Better understanding this specific problem might lead to further improvement in its management. Methods: It was an observational cross-sectional study. Ninety-one adult coronary artery disease patients over the period of one year who underwent invasive coronary angiogram were studied. Study subjects were divided into two groups after coronary angiogram: Left main (Group 1) and Non-left main (Group 2) CAD. Demographic data, risk factor profiles and angiographic patterns of both groups were compared to see if any statistically significant difference present or not. Results: The mean age and standard deviation in group 1 is 55.2±9.4 and in group 2 is 55.5±12.9; the comparative analysis showed no statistically significant difference. Most of the patients were male 69 (76%) and the comparative study showed statistically significant differences (p=0.046) which showed left main disease tended to be higher in male. Majority (64%) had BMI in normal range with no significant difference. Among the risk factors comparison, diabetes and family history of CAD showed significant association with the left main cohort (p<0.05). Non-ST elevated ACS was the most common presentation and significantly associated with the left main group (p<0.05). On coronary angiogram, there were 80 patients (87.92%) who had no left main artery involvement while 11 patients (12.08%) had left main disease. The comparative study of coronary artery involvement among the two groups reveals no statistically significant differences (p>0.05) but triple vessel disease was found more commonly than single and double vessel disease. Distal lesions (64%) were found more frequently than other types of left main stenosis followed by ostio-proximal lesion (36%). Conclusion: In the patients with left main coronary artery disease, male gender, diabetes mellitus, positive family history and presentation with non-ST elevation ACS were found to be significantly associated. Distal left main lesion and triple vessel disease were commonly found. University Heart Journal 2022; 18(1): 3-9

Background: Corona virus disease (COVID-19) has been associated with different cardiac complications including cardiac arrhythmias. Arrhythmias carries a great influence on the outcomes. The pathophysiology of these manifestations remain elusive. This study was aimed to observe the incidence and outcome of cardiac arrhythmia in patients with COVID-19 infection from July 2020 to May 2021. Method: We conducted an observational study of patients ³18 years of age with a clinical diagnosis of COVID -19 infection attending Bangabandhu sheikh Mujib Medical University (BSMMU) with and without cardiac arrhythmias from July 2020 to May 2021. Patients were labeled as having arrhythmia if they had sinus bradycardia (heart rate <40 bpm), A-V block, Atrial fibrillation (AF), atrial flutter (AFL), supraventricular tachycardia (SVT), nonsustained VT, sustained VT, ventricular fibrillation (VF). We excluded those patients presented with Acute Coronary syndrome & cardiogenic shock. Different clinical data including demographics, comorbidities (like Hypertension, Diabetes mellitus, Chronic kidney disease, IHD), baseline electrocardiographic and echocardiographic findings, antiviral therapy, use of any proarrhythmic drugs. Results: Data was collected from 2264 patients from BSMMU with COVID-19 infection. Among them 158 patients (6.97%) had cardiac arrhythmia, 78 (48.91%) had hypertension, 37 (23.41%) ischaemic heart disease, 31 (19.62%) diabetes, 14 (8.88%) had CKD. Out of 158 patients 53.79% had sinus bradycardia (heart rate £40bpm); 16(10.1%) had first degree AV block; 14 (8.86 %) had 2nd or 3rd degree AV block; 27 (17.08%) had AF; 7 (4.40%) had AFL; 6 (3.7%) had SVT; and 3 (1.89%) of had NSVT. Only one of S. bradycardia patient required temporary pacemaker. 80 (93.75%) did not require any specific treatment and 4 ( 6.25%) was ventilated. 14 (8.86%) had advance AV block, 11 (78.57%) was discharged, 1 (7.14%) required permanent pacemaker and 3 (21.42%) needed mechanical ventilation in addition to standard treatment. 40 (25.31%) had AF/AFL/SVT; all of them were treated with different antiarrhythmic drugs. 40.0% needed mechanical ventilation and 60.0% discharged safely. 3 (1.89%) had NSVT or VT, 2 (66.67%) of them needed mechanical ventilation and 1 (33.33%) was discharged safely. 87.32% patient was discharged safely and 16.4% was ventilated. Among 26 ventilated patients 15 (57.69%) was expired. Out of them 11 (68.75% of 16 patient) had atrial tachyarrhythmia, 2 (100% of 2 patient) had ventricular tachyarrhythmia and 2 (16.67% of 12 patient) had bradyarrhythmia. Conclusion: COVID-19 infection made a profound negative effect on the lives of millions of people across the world. More than 3 millions of people already died. Lots of patients of COVID-19 infection developed cardiac arrhythmia and was associated with high morbidity and mortality. Appropriate monitoring by ECG with accurate and early identification of arrhythmia is important for better management and outcome. University Heart Journal 2022; 18(1): 61-64

Introduction: Chronic heart failure with reduced ejection fraction is a major complication of diseases involving myocardium. Despite numerous pharmacological interventions and invasive therapeutic techniques, therapeutic options for end stage heart failure remain limited to left ventricular assist device & organ transplantation. Regenerative medicine may bring hope here. Method: This pilot study was carried out at the Department of cardiology in collaboration with department of haematology, Bangabandhu Sheikh Mujib Medical University, Dhaka, from October 2017 to March 2018. Considering inclusion & exclusion crieteria ten (10) patients were taken in stem cell group and ten (10) patients in control group. Patients in the control arm received standard of care in accordance with practice guidelines for heart failure management (GDMT). Patients in the cell therapy arm received, in addition to standard of care, bone marrow–derived cardiopoietic stem cells (G-CSF) meeting quality release criteria. Baseline clinical and echocardiographic data were obtained and recorded in pre-formed data sheet. Close liaison was maintained with all patients and followed up after 30 days & after 3 months and for any complication. The absolute change in 6 MWD from baseline to 30 days, 3 months & 6 months improved significantly in the both groups. But significant improvement was found at 6 months follow up of 6MWD between the two groups (300±28 vs 375±25, p= 0.04). Baseline BORG scale was similar in the control group and the SCT group (8.1±0.56 and 8.3±0.67 respectively, P= 0.45). The absolute change in BORG scale from baseline to 30 days, 3 months & 6 months improved significantly in the both groups. But improvement was not statistically significant in between the two groups (p= 0.32, 0.45, 0.23 respectively). Echocardiographic observation also revealed a similar baseline LVIDd, LVEF level in the control group and the SCT group which was not statistically significant (p = 0.45, 0.52 respectively). Gradual improvement in LVIDd were found at 30 days, 3 months, 6 months follow up observation but statistically significant absolute change was found only at 6 months follow up in between groups (62.4±1.8 vs 56±2.4, p=0.03). Baseline LVEF were less than 30% in both control & SCT group (29.5±0.8% & 28.7±1.3% respectively). The echocardiographic evaluation also revealed a significant increase in LVEF at 6 months (34% ±1.6 and 40% ± 2.5%, p = 0.04) of follow-up in between group but not at 30 days & 3 months follow up. University Heart Journal Vol. 16, No. 2, Jul 2020; 52-58

Background: Left atrial appendage (LAA) is considered the “most lethal human appendage” as it causes significant mortality and morbidity in chronic rheumatic mitral stenosis patients due to cardiogenic cerebral infract. Presence of LAA dysfunction has been shown to be a strong predictor of thrombus formation and the risk of embolic event, even if no clot is found at the time of initial examination. LAA emptying velocity are measured by trans esophageal echocardiography (TEE) represent as a surrogate marker for left atrial(LA) function .LAA emptying velocities (contraction velocity) < 20cm/s are associated with risk of spontaneous echo contrast(SEC), LAA thrombus, and subsequent cardio embolic events. So early detection of low emptying velocity without SEC or LA thrombus can reduce mortality & morbidity related to cardio embolic stroke and also helps in further management procedure like cardio version etc. So we will compare LAA emptying velocity moderate versus severechronic rheumatic mitral stenosis patients in our population for further attention. Objective: To assess emptying velocity of LAA in patient with moderate versus severe chronic rheumatic mitral stenosis, from a Bangladesh health service perspective. Method: This was a cross sectional study which was conducted in UCC, BSMMU during the period of from February 2019 to September 2019 in Echo lab . Study Procedure: We were enrolled 33 CRHD with MS (moderate to severe) patients who underwent TEE and met inclusion & exclusion criteria. The purpose of the study was explained to each subject & informed written consent was obtained. After getting consent relevant history, physical examination and preprocedural investigation was obtained in predesigned structured data collection sheet. TEE was done with Vivid E9® machine. Pulse wave Doppler was position at the tip of the LAA and then emptying velocity of LAA moderate and severe were compared. Outcome measure: Among 33 patients, 3 patients were excluded due to outlier and inadequate data.. In chronic rheumatic mitral stenosis in moderate versus severe cases average LAA emptying velocities were significantly higher moderate CRHD with MS compare to severe CRHD with MS,(26.57±4.91;31.12±5.04), P=0.018. Conclusion:Appendicular emptying velocity of LAA significantly lower in severe CRHD with MS compare to moderate CRHD with MS and it has temporal relation with MS severity. It can be used as a reliable, simple and sami-invasive tool to early predict severity and prevent complication in CRHD with MS as well as for prophylactic measured taken. University Heart Journal 2022; 18(2): 73-79

Although severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is well known for causing an acute respiratory disease, a number of patients after they get recovered from acute infection, subsequently experience a constellation of symptoms and events that lasts for more than 3 months. Adequate clinical data are now accumulating on the subacute and long-term effects of Covid-19 and can involve multiple organ systems. This spectrum of symptoms and late manifestations are thought to have a possible link with the covid-19 and this condition is named LONG COVID or POST-COVID. Some of the patients may show the ongoing evidence of cardiovascular damage on long term without having symptoms which may be picked up by different imaging modalities like CMR. There has been an increase in the number of COVID-19 patients in an exponential fashion so as to cause a collapse in the healthcare system in many countries across the world, with an effect not only on public health, but also on social and economic activities. University Heart Journal 2022; 18(2): 118-124

Clinicians have long recognized that acute myocardial infarction (MI) can occur in the absence of atherothrombosis . The Universal Definition of MI Global Taskforce introduced a classification system in 2007 (and reaffirmed in 2012) that defined type 2 MI (following standard diagnostic criteria) as MI occurring due to an imbalance in myocardial oxygen supply and/or demand not caused by atherosclerotic plaque disruption. Nevertheless, ambiguity remains regarding how to diagnose type 2 MI and how to distinguish it from both type 1 MI and myocardial injury. Here we report a case of a 23 year old young woman attended to emergency department, with typical chest pain and shortness of breath for 6 hours, Diarrhoea for 2 days, and single time loss of consciousness for 5 minutes, 6 hours before attending to hospital. Cardiac enzymes were rising titres in subsequent samples, Serum Creatinine was also high. Echocardiography performed 36 hour later, showed no regional wall motion abnormality, coronary angiogram showed normal coronary arteries. So, a diagnosis of Myocardial Infarction (Type 2 MI) with Non Obstructive Coronary Artery (MINOCA) was made, and MINOCA was attributed to hypovolemic shock (resulting from Dirrrahoea), manifested as MI, Syncope and AKI. University Heart Journal 2022; 18(2): 128-131

Background: The whole world is going through a grim crisis instigated by the Novel Coronavirus (COVID-19) pandemic. Health systems of Bangladesh are overburdened in response to the disease. Healthcare workers (HCWs) are at a high risk of getting the infection and the source of transmission in the community. Objectives: This study was designed to explore the real scenario about knowledge, perception and practical behavior about COVID-19 among healthcare professionals of Bangladesh to combat the pandemic during the first outbreak of the COVID-19 pandemic in Bangladesh. Findings of this study might be utilized for the promulgation of policy and program for upcoming days. Materials and Methods: This cross-sectional survey was conducted among the adult Bangladeshi healthcare professionals of purposively selected three type of healthcare facilities- a Tertiary level hospital: Bangabandhu Sheikh Mujib Medical University as well as District hospital and Upazila health Complex from highly infected district Narayangonj and low infected district- Brahmanbaria. A number of 241 HCWs were interviewed using a semi-structured self-administered questionnaire electronically via-email, Facebook Messenger or other social media communication. Result: It is observed that knoledge level is higher among the elder people (age >40 years) than the young people (age <30 years) (10.84±0.48 vs 10.13±1.39, p value is 0.003 at 1% level of confidence). Although there was no significant difference in attitude among them (Attitude score in age >40 years vs <30 years age group was 3.24±0.96 vs 2.96±0.635 with p value is >0.05 at 5% level of significance). Conclusion: To reduce the risk of infection among health care professionals who are not in direct contact with patients. Policy and education should be implemented to convey the importance of possible exposure to the virus. KYAMC Journal. 2022;12(04): 190-195