ABSTRACT
Background: Operator dependent two-dimensional (2D) echocardiography is a noninvasive test to assess myocardial hypokinesia. Inter observer variability is more as it is subjective. Objective evidence of 2D global longitudinal strain (2D GLS) and strain rate imaging are getting popularity. Methods: This cross sectional study was done on 20 patients who came for dobutamine stress echo (DSE) in the department of cardiology of BSMMU, Dhaka from 1st February 2019 to 31st July 2019. 2D GLS was done before and just after DSE. Results: DSE findings revealed 6 patients had viable LAD, 9 had viable LCX and 6 had viable RCA, 9 had nonviable LAD, 2 had nonviable LCX and 3 had nonviable RCA territories. Difference in Post-systolic strain rate (SRps) in myocardial segments supplied by LAD at baseline peak stress in patients who had normal and nonviable LAD (-21% to. -23%, p=0.98) and (-6%to – 7%, p= 2.87) which were not significant. At peak exercise there was a trend towards greater SRps in viable territory of LAD in compared with baseline and peak stress (-1% to -16%, P = 0.05) which was significant. SRps in myocardial segments supplied by LCX at baseline and peak stress in patients who have normal and nonviable LCX (-20% to. -21%, p=0.82) and (-5%to – 5%, p=1.18) which had similar result as LAD territory. At peak exercise there was a trend towards greater SRps in viable territory of LCX compared with baseline and peak stress (-12% to -15%, P = 0.06). There was no significant difference in SRps in myocardial segments supplied by RCA at baseline and peak stress in patients who had normal and nonviable RCA (-23% to. -24%, p=1.72) and (-4%to – 5%, p=2.10). At peak exercise there was a trend towards greater SRps in viable territory of RCA compared with baseline and peak stress (-10% to -15%, P = 0.04). Conclusion: Results of subjective interpretation of DES has compared with objective evidence 2D GLS on peak stress which has similarity. It was a small study. Future large study is needed to establish these findings.
ABSTRACT
Background: Acute Kidney Injury (AKI) is a strong predictor of in-hospital adverse outcomes, which is a common complication of acute coronary syndromes (ACS). ACS patients with renal impairment during hospitalization are associated with adverse outcomes like heart failure, cardiogenic shock, arrhythmia, dialysis requirement and mortality. Objective: To compare ACS patients with or without AKI has significant risk of in-hospital adverse outcomes. Methods: This prospective comparative study was conducted in the Department of Cardiology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, during the period of July 2017 to June 2018. A total of 70 eligible patients were included in this study. Electrocardiography, blood test for serum creatinine (on admission, 12 hours, 48 hours and at the time of discharge), lipid profile, RBS, 2-D echocardiography along with serum troponin, CK MB and electrolytes were done for all patients. Results: It was observed that mean age was 58.0±8.5 years in group A (ACS with AKI) and 55.6±12.3 years in group B (ACS without AKI). Male population was predominant in both the groups (85.7% and 74.2%, respectively). Heart failure was more common in group A than in Group B (74.3% vs 34.2% p=0.001 respectively). Arrhythmia was more common in group A than in Group B (100% vs 74.2% respectively). The mean duration of hospital stay was significantly higher in Group A than in the Group B (9.4±2.3 vs 7.2±0.6; p=0.001) days. Conclusion: This study showed adverse outcomes including longer duration of hospital stays were more common in the patients with AKI (group A) than in the patients without AKI (group B).