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| 1 | Significance of inferior wall ischemia in non-dominant right coronary artery anatomy显示文摘AIM To investigate the relationship of inferior wall ischemia on myocardial perfusion imaging in patients with nondominant right coronary artery anatomy.METHODS This was a retrospective observational analysis of consecutive patients who presented to the emergency department with primary complaint of chest pain.Only patients who underwent single photon emission computed tomography(SPECT)myocardial perfusion imaging(MPI)were included.Patients who showed a reversible defect on SPECT MPI and had coronary angiography during the same hospitalization was analyzed.Patients with prior history of coronary artery disease(CAD)including history of percutaneous coronary intervention and coronary artery bypass graft surgerys were excluded.True positive and false positive results were identified on the basis of hemodynamically significant CAD on coronary angiography,in the same territory as identified on SPECT MPI.Coronary artery dominance was determined on coronary angiography.Patients were divided into group 1 and group 2.Group1 included patients with non-dominant right coronary artery(RCA)(left dominant and codominant).Group2 included patients with dominant RCA anatomy.Demographics,baseline characteristics and positive predictive value(PPV)were analyzed for the two groups.RESULTS The mean age of the study cohort was 57.6 years.Sixtyone point seven percent of the patients were males.The prevalence of self-reported diabetes mellitus,hypertension and dyslipidemia was 36%,71.9%and 53.9%respectively.A comparison of baseline characteristics between the two groups showed that patients with a non-dominant RCA were more likely to be men.For inferior wall ischemia on SPECT MPI,patients in study group 2 had a significantly higher PPV,32/42(76.1%),compared to patients in group 1,in which only 3 out of the 29 patients(10.3%)had true positive results(P value<0.001 Z test).The difference remained statistically significant even when only patients with left dominant coronary system(without co-dominant)were compared to patients with right dominant system(32/40,76.1%in right dominant group,3/19,15.8%in left dominant group,P value<0.001 Z test).There was no significant difference in mean hospital stay,re-hospitalization,and in-hospital mortality between the two groups.CONCLUSION The positive predictive value of SPECT MPI for inferior wall ischemia is affected by coronary artery dominance.More studies are needed to explain this phenomenon. | Ali Osama Malik Oliver Abela Subodh Devabhaktuni Arhama Aftab Malik Gayle Allenback Chowdhury H Ahsan Sanjay Malhotra Jimmy Diep | 2017 | World Journal of Cardiology2017，9，3： | 2 |
| 2 | Artificial neural networks for RF and microwave design-fi'om theory to practice显示文摘 | ZHANG Q J GUPTA K C DEVABHAKTUNI V K | 2003 | IEEE Trans Microwave Theory Tech2003，51，： | 1 |
| 3 | A robust algorithmfor automatic development of neural network models for microwave applications 显示文摘 | Devabhaktuni V K Yagoub M C E Zhang Q 3 | 2001 | IEEE Transactions Microwave Theory Technolo- gy2001，49，12： | 1 |
| 4 | Artificial neural networks for RF and microwave design-from theory to practice显示文摘 | Zhang Q J Gupta K C Devabhaktuni V K | 2003 | IEEE Transactions on Microwave Theory and Techniques2003，51，4： | 1 |
| 5 | A hierarchical neural network approach to the development of a library of neural models for microwave design显示文摘 | Wang Fang Devabhaktuni V K Zhang Q J | 1998 | IEEE Trans MTT1998，46，12： | 1 |
| 6 | A novel hybrid fusion algorithm to bridge the period of GPS outages using low-cost INS显示文摘 | BHATT D AGGARWAL P DEVABHAKTUNI V | 2014 | Expert Systems with Applications2014，41，5： | 1 |
| 7 | Artificial neural networks for RF and microwave design-from theory to practice显示文摘 | Zhang Qijun Gupta K C Devabhaktuni V K | 2003 | IEEE Transactions on Microwave Theory and Technlques2003，51，4： | 1 |
| 8 | Dempster shafer neural network algorithm for land vehicle navigation application显示文摘 | Priyanka Aggarwal Deepak Bhatt Vijay Devabhaktuni | 2013 | Information Sciences2013，253，： | 1 |
| 9 | Adjustable bandwidth filter design based on interdigital capacitors显示文摘 | Zhu L Devabhaktuni V Wang C Y | 2008 | Microwave and Wireless Components Letters2008，18，1： | 1 |
| 10 | Artificial neural networks for RF and microwave design-from theory to practice显示文摘 | Zhang Q J Gupta K C Devabhaktuni V K | 2003 | Microwave Theory and Techniques IEEE Transactions on2003，51，4： | 1 |
| 11 | A novel hybrid fusion algorithm to bridge the period of GPS outages using low-cost INS显示文摘 | Bhatt D Agganwal P Devabhaktuni V | 2014 | Expert Systems with Applications2014，41，5： | 1 |
| 12 | Fixed combination of amlodipine and atorvastatin in cardiovascular risk management:patient perspectives显示文摘 | DEVABHAKTUNI M BANGALORE S | 2009 | Vasc Health Risk Manag2009，5，1： | 1 |
| 13 | Artificial neural networks for RF and microwave design-from theory to practice显示文摘 | Zhang Q J Gupta K C Devabhaktuni V K | 2003 | IEEE Trans- actions on Microwave Theory and Techniques2003，51，4： | 1 |
| 14 | ACRLH microstrip delay line for high-speed electroniccircuits显示文摘 | SWBAK S ZHU L DEVABHAKTUNI V K | 2007 | Piers Online2007，3，3： | 1 |
| 15 | A new ANN-based modeling approach for rapid EMI/EMC analysis of PCB and shielding enclosures显示文摘 | Devabhaktuni V Bunting C F Green D e! al | 2013 | IEEE Transactions on Electromagnetic Compatibility2013，55，2： | 1 |
| 16 | Smart meters for power grid : Challenges, issues, advantages and status 显示文摘 | DEPURU S S S R WANG L DEVABHAKTUNI V | 2011 | Renewable and Sustainable Energy Reviews2011，15，6： | 1 |
| 17 | Neural network stuctures and training algorithms for microwave applications 显示文摘 | Wang F Devabhaktuni V Zhang Q J | 1999 | International Journal of RF and Microwave Design1999，19，3： | 1 |
| 18 | A robust algorithm for automatic development of neural - network models for microwave applications 显示文摘 | Devabhaktuni V Yagoub M C E Zhang Q J | 2001 | IEEE trans microwave theory tech2001，49，： | 1 |
| 19 | Artificial neural networks for RF and microwave design -from theory to practice 显示文摘 | Zhang Q J Gupta K C Devabhaktuni V K | 2003 | IEEE trans microwave theory and tech2003，51，： | 1 |
| 20 | Smart meters for power grid: Challenges, issues, advantages and status显示文摘 | DEPURU S S S R WNAG Ling-feng DEVABHAKTUNI V | 2011 | Renewable and Sustainable Energy Reviews2011，15，6： | 1 |
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