-
Evaluation of Different ECG Parameters to Predict the Culprit Artery and Site of Occlusion in Patient with Acute Inferior Wall Myocardial Infarction
Omar Samir Sedik,
Ashraf Mohammed Anwar,
Ashraf Al-Amir Abd Elfattah,
Ali Ali Ramzy,
Mamdouh Helmy Eltahan
Issue:
Volume 1, Issue 1, January 2017
Pages:
1-6
Received:
22 January 2017
Accepted:
8 February 2017
Published:
1 March 2017
DOI:
10.11648/j.ccr.20170101.11
Downloads:
Views:
Abstract: The determination of infarct related artery in acute inferior myocardial infarction (MI) is extremely important. The present study aimed to evaluate the use of different ECG criteria to predict the culprit artery and site of occlusion in patients with acute inferior wall MI. The study conducted 100 patients (51.3±10.2 yrs, 79% males) presented by acute inferior MI. All patients were subjected to surface 12-lead ECG. Four ECG criteria were analyzed for prediction of culprit artery; ST segment depression in lead aVR >1 mV, ST segment elevation in lead III more than lead II, ST segment depression in lead I >0.05 mV and ST segment elevation in lead V4R > 1mV. The sum of ST segment elevation in lead II, III and aVF and ST segment elevation in lead V4R > 1mV were analyzed to predict the site of occlusion. Patients were divided into 2 groups based on the angiographic definition of the culprit artery: Group I included 79 patients (79%) with RCA lesion and Group II included 20 patients (20%) with LCX lesion. Only 1 patient (1%) was excluded because he had normal coronary angiography. In Group I, the ST segment elevation in lead III greater than lead II and ST segment depression in lead I > 0.05 mm had a comparable sensitivity (78% and 71% respectively) and specificity (60%. and 65% respectively) for RCA as the culprit artery. The ST segment elevation ≥ 1mm in V4R had very low sensitivity (37%) and highest specificity (100%). In Group II, ST segment depression ≥ 1mm in aVR was the best criteria for LCX as the culprit artery with sensitivity of 60% and specificity 81%. The sum of ST segment elevation in lead II, III and aVF was higher in proximal RCA (8.51±4.44mm) than both mid RCA (5.95 ± 3.06 mm) and distal RCA (5.00 ± 2.77 mm) (P value <0.001). The study concluded that it is possible to predict the culprit coronary artery in acute inferior wall MI by using the readily obtainable measures on the admission ECG.
Abstract: The determination of infarct related artery in acute inferior myocardial infarction (MI) is extremely important. The present study aimed to evaluate the use of different ECG criteria to predict the culprit artery and site of occlusion in patients with acute inferior wall MI. The study conducted 100 patients (51.3±10.2 yrs, 79% males) presented by a...
Show More
-
An Approximate Method to Find Changes in the Blood Flow Rate Due to Planar Pathological Tortuosity of a Larger Coronary Artery
Issue:
Volume 1, Issue 1, January 2017
Pages:
7-17
Received:
30 January 2017
Accepted:
22 February 2017
Published:
15 March 2017
DOI:
10.11648/j.ccr.20170101.12
Downloads:
Views:
Abstract: Proceed from the analysis of coronarographies of patients with cardiac ischemia and cardiac syndrome X, an approximate method is developed to allow cardiologists to find (with satisfactory precision and speed) both changes in the blood flow rate in larger coronary arteries, caused by the appearance of their planar pathological tortuosity, and a hemodynamic significance of those changes based on the data taken from the appropriate coronarographies only. This method is based on replacement of real blood flows in the originally healthy and subsequently pathologically tortuous artery with the corresponding cross-sectionally averaged ones, and subsequent calculation of the blood flow characteristics of interest in terms of the corresponding averaged flow characteristics. It allows one not to take account of a number of identical factors for the originally healthy and subsequently pathologically tortuous segment of the coronary artery under investigation, and gives one the possibility to determine the blood flow parameters of concern at any time after carrying out a coronarography. In addition, the developed method is not associated with solving complicated technical problems, and does not require special facility to be used, special professional training and significant expences. It was successfully tested in laboratory conditions and then successfully applied to appropriate patients.
Abstract: Proceed from the analysis of coronarographies of patients with cardiac ischemia and cardiac syndrome X, an approximate method is developed to allow cardiologists to find (with satisfactory precision and speed) both changes in the blood flow rate in larger coronary arteries, caused by the appearance of their planar pathological tortuosity, and a hem...
Show More
-
The Model of the Myocardium in the MSC Sinda System
Vladyslav Shlykov,
Valentyna Danilova,
Vitaliy Maksymenko
Issue:
Volume 1, Issue 1, January 2017
Pages:
18-22
Received:
31 January 2017
Accepted:
6 March 2017
Published:
22 March 2017
DOI:
10.11648/j.ccr.20170101.13
Downloads:
Views:
Abstract: The model for the physical system of myocardium and coronary vessels are realized on basis RC-thermal network in the MSC Sinda system for the heat transfer model, which allows you to explore the process of hypo- and hyperthermia with cardiopulmonary bypass.
-
Prevalence of Thrombocytopenia Among Pregnant Women in Tripoli Region, Libya
Samira Muspah Saleh Altayri
Issue:
Volume 1, Issue 1, January 2017
Pages:
23-28
Received:
10 March 2017
Accepted:
25 March 2017
Published:
11 April 2017
DOI:
10.11648/j.ccr.20170101.14
Downloads:
Views:
Abstract: The aim of this study is to investigate the prevalence and the commonest degree of thrombocytopenia among pregnant women in Tripoli region, Libya. This is cross section study included pregnant women who were admitted to obstetrical ward department of obstetrics and gynecology in Al-gala Hospital, Tripoli, Libya. This study was carried out over a period of 5 month from February 2009 to June 2009 on 3520 pregnant women. 5 ml of venous blood specimens were take from each pregnant woman in K3 EDTA (tubes for the haematological examinations. The analysis of haematological indices was done using automated hematological analyzer. The results showed that 17% of pregnant women were thrombocytopenic. Thrombocytopenia increased with increase of age pregnant women. 81% of patients had mild thrombocytopenia and 19% of patients had moderate thrombocytopenia were found in this study when compared with control group. The incidence of mild thrombocytopenia was 42.5% in age group (30 -39) Followed by 37.8% in age group (20-29). The prevalence of thrombocytopenia increased with increase of the gestational age to reach maximum at the third trimester of gestation. Association of onset of thrombocytopenia disorder with age distribution of patients in age group 20-29 years old were 2.7% during first trimester, 17.8% during second trimester and 79.5% during third trimester. In age group 30 – 39 years old were 3.2% during first trimester, 10.8% during second trimester and 86% during third trimester. In age group 40-49 years old were 46.7% during second trimester and 53.3 during third trimester. 37% of thrombocytopenic pregnant women were anaemic. Association of onset of anaemia disorder with age distribution of patients in age group 20-29 years old were 26.9% during second trimester and 73.1% during third trimester. In age group 30 – 39 years old were 14.3% during second trimester and 85.7% during third trimester. Data shows that 26% of patients had mild anaemia and 8.8% of patients had moderate anaemia and 1.8% severe anaemia cases were found in this study when compared with 62.9% non anaemic. It can be concluded that thrombocytopenia disorders in pregnancy are very common in Tripoli region. Careful surveillance is required for these pregnancies in high-risk units for early detection and treatment of possible complications, in order to try to reduce maternal and neonatal morbidities. Further prospective studies among these high-risk populations with moderate to severe thrombocytopenia should investigate the efficacy of possible surveillance programs.
Abstract: The aim of this study is to investigate the prevalence and the commonest degree of thrombocytopenia among pregnant women in Tripoli region, Libya. This is cross section study included pregnant women who were admitted to obstetrical ward department of obstetrics and gynecology in Al-gala Hospital, Tripoli, Libya. This study was carried out over a pe...
Show More
