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14. Using analytic hierarchy process to determine forex risk hedging strategies of SMEs.

Author

Sharma, Renuka, Mehta, Kiran, and Chugh, Aman

Subjects
HEDGING (Finance), ANALYTIC hierarchy process, SMALL business, FOREIGN exchange market, EXPLORATORY factor analysis, GROUP decision making
Abstract

The study aims to explore the determinants of hedging strategies to mitigate forex exposure risk for IndianSMEs and other unlisted firms which comes in the category of non-financial in nature. Further, these determinants are prioritized based on expert opinion. Basically, the current research is exploratory in nature. It is based on primary data. The analysis is done in two sections. The first part focuses on the extraction of factors explaining the determinants of a hedging strategy adopted to reduce forex risk. For this purpose, the basic technique called exploratory factor analysis (EFA) is applied. The second part has an applied analytic hierarchy process (AHP), which makes paired comparison of factors discovered through EFA and thus prioritizes the determinants based on expert decision making. The study has practical implications for SMEs, unlisted firms, forex risk advisors, and regulators too. The factors that make up a hedging strategy will help all of these groups make good decisions when making a hedging strategy and developingforex risk hedging instruments for small and medium-sized businesses (SMEs) and firms that are not publicly traded. The study is unique because no other research has looked into what makes SMEs and unlisted firms choose hedging strategies for forex risk exposure. [ABSTRACT FROM AUTHOR]

Published
2023
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17. Galectin-3 Regulates Atrial Fibrillation Remodeling and Predicts Catheter Ablation Outcomes

Author

Takemoto, Yoshio, Ramirez, Rafael J., Yokokawa, Miki, Kaur, Kuljeet, Ponce-Balbuena, Daniela, Sinno, Mohamad C., Willis, B. Cicero, Ghanbari, Hamid, Ennis, Steven R., Guerrero-Serna, Guadalupe, Henzi, Bettina C., Latchamsetty, Rakesh, Ramos-Mondragon, Roberto, Musa, Hassan, Martins, Raphael P., Pandit, Sandeep V., Noujaim, Sami F., Crawford, Thomas, Jongnarangsin, Krit, Pelosi, Frank, Bogun, Frank, Chugh, Aman, Berenfeld, Omer, Morady, Fred, Oral, Hakan, and Jalife, José

Published
2016
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20. Ablation of paroxysmal atrial fibrillation using a second‐generation cryoballoon catheter or contact‐force sensing radiofrequency ablation catheter: A comparison of costs and long‐term clinical outcomes

Author

Yokokawa, Miki, Chugh, Aman, Latchamsetty, Rakesh, Ghanbari, Hamid, Crawford, Thomas, Jongnarangsin, Krit, Cunnane, Ryan, Saeed, Mohammed, Hornsby, Kyle, Krishnasamy, Kavita, Lohawijarn, Watchara, Keast, Robert, Karpenko, David, Bogun, Frank, Pelosi, Frank, Jr, Morady, Fred, and Oral, Hakan

Published
2018
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22. Abstract 18092: Ablation of Paroxysmal Atrial Fibrillation Using a 2nd Generation Cryoballoon Catheter or Contact-Force Sensing Radiofrequency Ablation Catheter: A Comparison of Costs and Long-Term Clinical Outcomes

Author

Yokokawa, Miki, Chugh, Aman, Latchamsetty, Rakesh, Ghanbari, Hamid, Crawford, Thomas, Jongnarangsin, Krit, Cunnane, Ryan, Saeed, Mohammed, Hornsby, Kyle, Krishnasamy, Kavita, Lohawijarn, Watchara, Keast, Robert, Karpenko, David, Bogun, Frank, Pelosi, Frank, Jr, Morady, Fred, and Oral, Hakan

Published
2017

23. Incidental left atrial appendage isolation after catheter ablation of persistent atrial fibrillation: Mechanisms and long‐term risk of thromboembolism.

Author

Ghannam, Michael, Jongnarangsin, Krit, Emami, Hamed, Yokokawa, Miki, Liang, Jackson J., Saeed, Mohammed, Oral, Hakan, Morady, Fred, and Chugh, Aman

Subjects
THROMBOEMBOLISM risk factors, EVALUATION of medical care, CONFIDENCE intervals, RADIO frequency therapy, ORAL drug administration, ATRIAL fibrillation, CATHETER ablation, SURGICAL complications, ANTICOAGULANTS, ATRIAL flutter, SURGERY, PATIENTS, RISK assessment, EXPERIENCE, TREATMENT effectiveness, DESCRIPTIVE statistics, HEART atrium, TACHYCARDIA, LEFT heart atrium
Abstract

Introduction: Incidental left atrial appendage (LAA) isolation may occur during radiofrequency ablation of persistent atrial fibrillation (AF). The study aims to describe the mechanisms and long‐term thromboembolic risk related to incidental LAA isolation. Methods: Patients who experienced incidental LAA isolation after AF ablation were included. Culprit sites where ablation resulted in LAA isolation were identified. Thromboembolic risk despite oral anticoagulation (OAC) was compared to that in a propensity‐matched control group without LAA isolation. Results: Forty‐one patients with LAA isolation, and 82 matched patients without LAA isolation were included. The patient age, ejection fraction, LA diameter, and CHA2DS2‐VASc score were 64 ± 11 years, 55 ± 12%, 45.0 ± 7 mm and 2.62 ± 1.5, respectively. Culprit sites included the LAA base, mitral isthmus, inferior LA, Bachmann′s bundle, coronary sinus, and Marshall vein. After 4.2 ± 3.6 years follow‐up, thromboembolism occurred in 7 of 41 patients (17%) with LAA isolation versus 3 of 82 patients (4%) without isolation (log rank p <.009, HR 5.14, 95% CI [1.32–19.94], p =.02). Patients with and without thromboembolism had similar CHA2DS2‐VASc scores (2.65 ± 1.3 vs. 2.71 ± 0.76, p =.89). Thromboembolism occurred during noncompliance with or temporary discontinuation of OAC in four of the seven patients. Conclusions: Incidental LAA isolation may occur during ablation of atrial arrhythmias in the vicinity of, or even at sites remote from the appendage. Patients with incidental LAA isolation had higher rates of thromboembolism compared to patients without isolation. Since thromboembolism may occur despite prescription for OAC, the risks of LAA isolation must be weighed against clinical benefit and appendage occlusion devices should be considered in vulnerable patients. [ABSTRACT FROM AUTHOR]

Published
2023
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27. Three‐dimensional‐guided and ICE‐guided transseptal puncture for cardiac ablations: A propensity score match study.

Author

Chokesuwattanaskul, Ronpichai, Ananwattanasuk, Teetouch, Hughey, Andrew B., Stuart, Elizabeth A., Shah, Muazzum M., Atreya, Auras R., Chugh, Aman, Bogun, Frank, Crawford, Thomas, Pelosi, Frank, Cunnane, Ryan, Ghanbari, Hamid, Latchamsetty, Rakesh, Chung, Eugene, Saeed, Mohammed, Ghannam, Michael, Liang, Jackson, Oral, Hakan, Morady, Fred, and Jongnarangsin, Krit

Subjects
ECHOCARDIOGRAPHY, THREE-dimensional imaging, SCIENTIFIC observation, ARTERIAL puncture, FLUOROSCOPY, TREATMENT effectiveness, COMPARATIVE studies, DESCRIPTIVE statistics, LOGISTIC regression analysis, ABLATION techniques, PATIENT safety, PROBABILITY theory, LONGITUDINAL method
Abstract

Introduction: Transseptal puncture (TSP) is routinely performed for left atrial ablation procedures. The use of a three‐dimensional (3D) mapping system or intracardiac echocardiography (ICE) is useful in localizing the fossa ovalis and reducing fluoroscopy use. We aimed to compare the safety and efficacy between 3D mapping system‐guided TSP and ICE‐guided TSP techniques. Methods: We conducted a prospective observational study of patients undergoing TSP for left atrial catheter ablation procedures (mostly atrial fibrillation ablation). Propensity scoring was used to match patients undergoing 3D‐guided TSP with patients undergoing ICE‐guided TSP. Logistic regression was used to compare the clinical data, procedural data, fluoroscopy time, success rate, and complications between the groups. Results: Sixty‐five patients underwent 3D‐guided TSP, and 151 propensity score‐matched patients underwent ICE‐guided TSP. The TSP success rate was 100% in both the 3D‐guided and ICE‐guided groups. Median needle time was 4.00 min (interquartile range [IQR]: 2.57–5.08) in patients with 3D‐guided TSP compared to 4.02 min (IQR: 2.83–6.95) in those with ICE‐guided TSP (p =.22). Mean fluoroscopy time was 0.2 min (IQR: 0.1–0.4) in patients with 3D‐guided TSP compared to 1.2 min (IQR: 0.7–2.2) in those with ICE‐guided TSP (p <.001). There were no complications related to TSP in both group. Conclusions: Three‐dimensional mapping‐guided TSP is as safe and effective as ICE‐guided TSP without additional cost. [ABSTRACT FROM AUTHOR]

Published
2023
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37. A Randomized Assessment of the Incremental Role of Ablation of Complex Fractionated Atrial Electrograms After Antral Pulmonary Vein Isolation for Long-Lasting Persistent Atrial Fibrillation

Author

Oral, Hakan, Chugh, Aman, Yoshida, Kentaro, Sarrazin, Jean F., Kuhne, Michael, Crawford, Thomas, Chalfoun, Nagib, Wells, Darryl, Boonyapisit, Warangkna, Veerareddy, Srikar, Billakanty, Sreedhar, Wong, Wai S., Good, Eric, Jongnarangsin, Krit, Pelosi, Frank, Jr, Bogun, Frank, and Morady, Fred

Published
2009
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42. Relationship between the spectral characteristics of atrial fibrillation and atrial tachycardias that occur after catheter ablation of atrial fibrillation

Author

Yoshida, Kentaro, Chugh, Aman, Ulfarsson, Magnus, Good, Eric, Kuhne, Michael, Crawford, Thomas, Sarrazin, Jean F., Chalfoun, Nagib, Wells, Darryl, Boonyapisit, Warangkna, Veerareddy, Srikar, Billakanty, Sreedhar, Wong, Wai S., Jongnarangsin, Krit, Pelosi, Frank, Jr., Bogun, Frank, Morady, Fred, and Oral, Hakan

Published
2009
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