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https://www.readbyqxmd.com/read/27752031/short-term-outcome-of-acute-inferior-wall-myocardial-infarction-with-emphasis-on-conduction-blocks-a-prospective-observational-study-in-indian-population
#1
Varun Kumar, Santosh Sinha, Prakash Kumar, Mohammed Razi, Chandra Mohan Verma, Ramesh Thakur, Umeshwar Pandey, Rajpal Singh Bhardwaj, Mohammed Ahmad, R K Bansal, Shalini Gupta
OBJECTIVE: The primary aim of the present study was to evaluate the complications, particularly conduction blocks, subsequent morbidity and mortality, and effect of thrombolytic therapy in Indian patients with inferior wall myocardial infarction (IWMI). METHODS: This was a prospective, observational, single-center study conducted at LPS Institute of Cardiology, Kanpur, from December 2011 to May 2014. Patients who presented with typical chest pain and were subsequently diagnosed by standardized diagnostic criteria as having IWMI were enrolled...
October 12, 2016: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/24772703/lead-avr-the-neglected-lead
#2
REVIEW
M Chenniappan, R Uday Sankar, K Saravanan, Karthikeyan
The aVR is often neglected lead. It is an unipolar lead facing the right superior surface. As all the depolarisations are going away from lead aVR, all waves are negative in aVR (P, QRS, T) in normal sinus rhythm. In dextrocardia, (True and technical) the p is upright in aVR. The lead aVR is a very important lead in localisation of Coronary Artery Disease. In the presence of anterior ST elevation, ST elevation in lead aVR and V1 denotes proximal LAD obstruction where ST elevation is more in lead V1, than in aVR...
September 2013: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/24530590/evaluation-of-dams-and-weirs-operating-for-water-resource-management-of-the-geum-river
#3
Jung Min Ahn, Sangjin Lee, Taeuk Kang
As part of the Four Major Rivers Restoration Project, 16 multi-functional weirs have recently been constructed in each river system in Korea. The Project has pursued ecological approaches through constructing artificial weirs in waterways to ensure sufficient flow even in the dry seasons, improving agricultural reservoirs to supply environmental flow for the rivers, and thereby enhancing the water quality of the rivers. However, these anthropogenic activities have been accompanying a significant change in the riverine environment...
April 15, 2014: Science of the Total Environment
https://www.readbyqxmd.com/read/24396263/left-arm-left-leg-lead-reversal-in-a-case-of-inferior-wall-myocardial-infarction-mimics-as-high-lateral-wall-infarction
#4
Satish Karur, Soumya Patra, Ravindranath K Shankarappa, Navin Agrawal, Manjunath Cholenahally Nanjappa
A 56-year-old male patient was admitted with an evolved inferior wall myocardial infarction (IWMI). Electrocardiogram (ECG) showed presence of ST elevation and T wave inversion in the inferior leads. ECG taken on the next day surprisingly showed features suggestive of acute high lateral wall myocardial infarction (LWMI), without features suggestive of re-infarction which was finally diagnosed to be an artefact due to lead reversal. Lead reversal between left arm and left leg can mimic as high LWMI in a case with IWMI and we should aware of this situation before misdiagnosing it as re-infarction...
September 2013: Journal of Cardiovascular Disease Research
https://www.readbyqxmd.com/read/24206875/echocardiographic-assessment-of-right-ventricular-function-in-inferior-wall-myocardial-infarction-and-angiographic-correlation-to-proximal-right-coronary-artery-stenosis
#5
COMPARATIVE STUDY
Gopalan Nair Rajesh, Deepak Raju, Deepak Nandan, Vellani Haridasan, Desabandhu Vinayakumar, Kader Muneer, C G Sajeev, Kadangot Babu, M N Krishnan
BACKGROUND: Presence of right ventricular (RV) infarction imposes a higher risk of adverse events in inferior wall myocardial infarction (IWMI). In this study, we attempted to correlate various indices of RV function assessed by echocardiography with presence of a proximal right coronary artery (RCA) stenosis in patients with first episode of acute IWMI. METHODS: In a prospective study, patients with first episode of acute IWMI underwent echocardiographic assessment within 24 h of symptom onset and indices of RV function viz...
September 2013: Indian Heart Journal
https://www.readbyqxmd.com/read/21954053/the-pulmonary-artery-pulsatility-index-identifies-severe-right-ventricular-dysfunction-in-acute-inferior-myocardial-infarction
#6
Ravi Korabathina, Kevin S Heffernan, Vikram Paruchuri, Ayan R Patel, James O Mudd, Jordan M Prutkin, Nicole M Orr, Andrew Weintraub, Carey D Kimmelstiel, Navin K Kapur
BACKGROUND: Right ventricular dysfunction (RVD) is a major cause of morbidity and mortality in the setting of acute inferior wall myocardial infarction (IWMI), and early detection may improve clinical outcomes. We defined a novel hemodynamic index, the pulmonary artery pulsatility index (PAPi), and explored whether the PAPi correlates with severe RVD in acute IWMI. METHODS: From 2008 to 2010, we identified 20 patients presenting with angiographically confirmed proximal right coronary artery occlusion and suspected RVD (sRVD) as defined by hemodynamic instability, profound bradycardia, or ST-elevation in lead V4R...
October 1, 2012: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/21868253/effects-of-a-percutaneous-mechanical-circulatory-support-device-for-medically-refractory-right-ventricular-failure
#7
MULTICENTER STUDY
Navin K Kapur, Vikram Paruchuri, Ravikiran Korabathina, Ramzi Al-Mohammdi, James O Mudd, Jordan Prutkin, Michele Esposito, Ameer Shah, Michael S Kiernan, Candice Sech, Duc Thinh Pham, Marvin A Konstam, David Denofrio
BACKGROUND: Medically refractory right ventricular failure (MR-RVF) is associated with high in-hospital mortality and is managed with surgical assist devices, atrial septostomy, or extracorporeal membrane oxygenation. This study explored the hemodynamic effect associated with a percutaneous RV support device (pRVSD) for MR-RVF. METHODS: Between 2008 and 2010, 9 patients with MR-RVF, defined as cardiogenic shock despite maximal medical therapy, were treated with a pRVSD...
December 2011: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/20548974/electrocardiographic-identification-of-the-culprit-coronary-artery-in-inferior-wall-st-elevation-myocardial-infarction
#8
REVIEW
Mohammed Almansori, Paul Armstrong, Yuling Fu, Padma Kaul
BACKGROUND: Electrocardiograms (ECGs) are essential in identifying the type and location of acute myocardial infarction. In the setting of inferior wall myocardial infarction (IWMI), identification of the right coronary artery (RCA) as the culprit artery is important because of the potential complications associated with its involvement. OBJECTIVES: To evaluate previous ECG criteria used for the identification of RCA involvement and validate them in the Assessment of the Safety and Efficacy of a New Treatment Strategy with Percutaneous Coronary Intervention (ASSENT 4 PCI) cohort; and to develop an improved simplified score to identify RCA involvement...
June 2010: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/20412273/assessment-of-right-ventricular-diastolic-function-by-tissue-doppler-imaging-in-patients-with-acute-right-ventricular-myocardial-infarction
#9
Mohammed Mukhaini, Panduranga Prashanth, Said Abdulrehman, Majid Zadjali
BACKGROUND: It is known that right ventricular systolic parameters as assessed by color tissue Doppler imaging (TDI) are abnormal in patients with inferior wall ST elevation myocardial infarction (IWMI) with right ventricular myocardial infarction (RVMI). This study was undertaken to determine right ventricular diastolic function as assessed by TDI in patients with acute RVMI. METHODS: Thirty-five patients with first IWMI were studied and compared with 20 age-matched healthy controls, and categorized into those with (14 patients) and without (21 patients) RVMI based on standard ECG criteria...
May 2010: Echocardiography
https://www.readbyqxmd.com/read/15656026/importance-of-reciprocal-leads-in-acute-myocardial-infarction
#10
G P Parale, P M Kulkarni, S K Khade, Swapna Athawale, Amit Vora
OBJECTIVES: To study the relevance of the ECG changes in the reciprocal leads in patients with acute anterior and inferior wall myocardial infarction, with regard to culprit artery localization and left ventricular (LV) function. METHODS: Three hundred patients of acute myocardial infarction (AMI) (180 anterior, 120 inferior) aged between 30-90 years (mean age - 60 yrs; M:F - 220:80) were studied with regard to the reciprocal lead changes which were correlated with the culprit coronary artery and LV function...
May 2004: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/15161119/prevalence-of-right-ventricular-myocardial-infarction-in-patients-with-acute-inferior-wall-myocardial-infarction
#11
S Khan, A Kundi, S Sharieff
The objective was to evaluate the prevalence of right ventricular myocardial infarction (RVMI) in patients with acute inferior wall myocardial infarction (IWMI) admitted to the National Institute of Cardiovascular Diseases, Karachi, Pakistan. Between August 2000 and May 2001, a total of 100 patients with acute IWMI were enrolled. History of all patients was taken, and thorough clinical examination was performed to asses the presence of signs of right ventricular infarction. Standard 12-lead electrocardiogram was recorded immediately on arrival of patients along with right precordial leads...
April 2004: International Journal of Clinical Practice
https://www.readbyqxmd.com/read/15093851/electrocardiographic-manifestations-acute-inferior-wall-myocardial-infarction
#12
Noelle Rotondo, Marc L Pollack, Theodore C Chan, William J Brady, Richard A Harrigan
The 12-lead electrocardiogram (EKG) is an important tool in evaluating the patient with acute myocardial infarction (MI). Patients with acute inferior wall myocardial infarction (IWMI) represent a heterogeneous group in terms of morbidity, mortality, Emergency Department (ED) management, and site of occlusion in the culprit coronary artery. The standard 12-lead EKG, right-sided chest leads and posterior chest leads, in conjunction with clinical findings often provide the necessary information for the Emergency Physician (EP) to predict complications, morbidity and mortality...
May 2004: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/14732243/a-malaria-risk-analysis-in-an-irrigated-area-in-sri-lanka
#13
Eveline Klinkenberg, Wim van der Hoek, Felix P Amerasinghe
Malaria in Sri Lanka is unstable and epidemic, with large spatial and temporal differences in transmission dynamics. The disease is of great public health significance and identification of underlying risk factors is important in order to use the limited resources in a cost-effective way. The International Water Management Institute (IWMI) recently launched a project of GIS-based malaria risk mapping in Sri Lanka, to investigate whether this tool could be used for epidemic forecasting and for the planning of malaria control activities...
January 2004: Acta Tropica
https://www.readbyqxmd.com/read/11507790/recognition-and-management-of-inferior-wall-myocardial-infarctions-and-right-ventricular-infarcts
#14
REVIEW
N M Scroggins
Cardiovascular disease is a predominant health problem in the United States. Annually, more than 6 million people experience an acute myocardial infarction (MI). Right ventricular infarct (RVI) occurs in approximately one third of all patients who present with an inferior wall myocardial infarction (IWMI). The aggressive initial treatment of IWMI with RVI may improve morbidity and mortality. Thus, it is essential to understand the different modalities used to treat a right and left ventricular MI.
July 2001: Journal of Infusion Nursing: the Official Publication of the Infusion Nurses Society
https://www.readbyqxmd.com/read/6909200/acute-myocardial-infarction-and-fascicular-block
#15
A G Arcebal, L Lemberg
Left anterior fascicular block may mask an IWMI. On the other hand, a narrow QS deflection in a VF is often misinterpreted as evidence of extensive inferior wall infarction. Vectorcardiographic analysis usually establishes the coexistence of LAFB and IWMI. Standard Lead II of the ECG is the most valuable in differentiating the etiology of ALAD: (1) rS pattern in LAFB, (2) Qr or QR in IWMI, or (3) a QS pattern or a smaller or slurred r wave with a deep S wave in combined IWMI and LAFB.
July 1981: Heart & Lung: the Journal of Critical Care
https://www.readbyqxmd.com/read/3996067/a-simplified-qrs-scoring-system-for-the-estimation-of-the-severity-of-acute-inferior-wall-myocardial-infarction
#16
A Arditti, S Sclarovsky, R F Lewin, C Helman, B Strasberg, N Zafrir, J Agmon
Electrocardiographic assessment of the R/Q wave ratio (lead 2) of patients with a first acute inferior wall myocardial infarction (IWMI) offers important indirect quantitative information regarding the severity and extent of the myocardial damage. Eighty-eight consecutive patients with IWMI were investigated by echocardiography and radionuclear angiography. After measuring the R/Q ratio in lead 2 during the ST-wave stabilized stage of myocardial infarction, patients were separated into three groups--group 1 with an R/Q ratio greater than 2; group 2 with an R/Q ratio between 1 to 2; and group 3 with an R/Q ratio less than 1...
June 1985: Chest
https://www.readbyqxmd.com/read/3396407/precordial-t-wave-polarity-changes-in-acute-inferior-infarction-a-poor-indicator-of-associated-disease-of-the-left-anterior-descending-coronary-artery
#17
M J Robbins, W Sherman, P Schweitzer, M Cohen
T-wave polarity in V1 to V3 was examined in 70 patients with acute inferior wall myocardial infarctions (IWMI) as an indicator of significant disease in the left anterior descending coronary artery (LAD). Fifty-three percent (37/70) had precordial T-wave inversions, and of these 38 percent (14/37) had angiographically significant LAD disease. Conversely, 47 percent (33/70) had upright T waves in V1 to V3, and of these, 52 percent (17/33) had significant LAD disease. Likewise, 41 percent of the patients with ST segment depression in V1 to V3 had significant LAD disease, while 50 percent of those with isoelectric ST segments were similarly affected...
August 1988: Chest
https://www.readbyqxmd.com/read/3241140/the-natural-course-of-electrocardiographic-stages-of-acute-inferior-myocardial-infarction-in-regard-to-r-q-ratio-group-classification
#18
E Klainman, S Sclarovsky, A Mager, O Topaz, J Agmon
Forty-three patients with their first acute inferior wall myocardial infarction (IWMI) were divided into three groups according to the R/Q ratio in standard lead II. This was done to correlate these groups with the characteristic course of electrocardiographic stages. The R/Q ratio was measured on the ninth day of follow-up study, and the electrocardiographic stages were followed from the onset of the IWMI up until the ninth day. Patients with R/Q greater than 2 (group I) had a more rapid progression through the electrocardiographic stages, along with a better clinical course than patients with a lower R/Q ratio...
November 1988: Journal of Electrocardiology
https://www.readbyqxmd.com/read/2776152/clinical-significance-of-high-frequency-qrs-potentials-in-myocardial-infarction-analysis-based-on-power-spectrum-of-lead-iii
#19
K K Talwar, G S Rao, U Nayar, M L Bhatia
Power spectrum analysis of ECG lead III QRS potentials using the Fast Fourier Transform technique was performed in 10 normal subjects and nine patients with inferior wall myocardial infarction (IWMI). A relative lowering in both low and high frequency QRS potentials was observed in the infarct group, in agreement with previous studies on power spectrum of lead II. However, contrary to earlier conclusions, the lowering was independent of a general attenuation in QRS voltages. Discriminant analysis of the frequency components showed that the high frequency components (190-310 Hz) were able to discriminate better between the two groups than the low frequency components (10-120 Hz)...
January 1989: Cardiovascular Research
https://www.readbyqxmd.com/read/1450392/quantitative-assessment-of-regional-wall-motion-abnormalities-with-2de-in-cases-of-myocardial-infarction
#20
Y Yang, Z Chen, Y Xu, W Kou, R Gao, H Yang
The severity, extent and localization of regional wall motion abnormalities (RWMA) were quantitatively assessed with apical biplane two-dimensional echocardiography (2DE) using a fixed-axis system, ten-segment division area method in 56 patients with old myocardial infarction (OMI). RWMA were found to be more severe in the anterior wall MI (AWMI) group than in the inferoposterior wall MI (IWMI) group and most severe in the extensive AWMI with ventricular aneurysm (EAWMI with VA) group; the extent of RWMA was smallest in the IWMI group, significantly larger in the AWMI group, and largest in the EAWMI with VA group...
June 1992: Chinese Medical Sciences Journal, Chung-kuo i Hsüeh K'o Hsüeh Tsa Chih
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