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Kohei Hasegawa MD, MPH is an attending physician at the MGH Department of Emergency Medicine. He is also an Associate Professor of Emergency Medicine at Harvard Medical School.
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Dr. Kohei Hasegawa is an attending physician at the MGH Department of Emergency Medicine. He received his medical degree from Tokai University (Japan) and Master of Public Health degree from Harvard University. Dr. Hasegawa completed his emergency medicine residency and research fellowship at Massachusetts General Hospital. Dr. Hasegawa is additionally an Associate Professor of Emergency Medicine at Harvard Medical School.Dr. Hasegawa is an active clinician-scientist. He is the founder/director of the Japanese Emergency Medicine Network (JEMNet) and a faculty member of Emergency Medicine Network (EMNet), multi-center collaborations that aim to improve public health through projects in emergency care, particularly multicenter clinical research.
Dr. Hasegawa has made significant contributions to the field of airway and respiratory emergency research. He has assembled a team of researchers from more than 50 centers to conduct several large-scale studies of emergency airway management and acute asthma management in the US and Japan.
He has published >100 peer-reviewed articles since 2012. His published manuscripts include first-author publications in the journals, such as JAMA, JACI, JACC, AJRCCM, Annals of Emergency Medicine, and Pediatrics. In addition to these original research papers, he has published more than 40 reviews, textbook chapters, and editorials.
View my most recent publications at PubMed
A study led by MGH investigators suggests that bariatric surgery can significantly reduce the risk of asthma attacks – also called exacerbations – in obese patients with asthma.
A study comparing the care delivered to patients coming to hospital emergency departments for acute asthma attacks in recent years with data gathered more than 15 years earlier finds that, while achievement of most guidelines defining appropriate pharmacologic treatments for particular patients improved, hospitals did less well in meeting several other guidelines.
Almost one-third of acute heart failure syndrome patients seen in hospital emergency departments in Florida and California during 2010 had ED visits during the following year, findings that suggest a lack of appropriate outpatient care.
A study conducted by MGH investigators found that patients brought to hospital emergency departments more than once in a year for treatment of opioid drug overdoses are more likely to be hospitalized for overdose and to need respiratory support with a mechanical ventilator. The study also identified factors that increased the risk of subsequent overdoses requiring emergency department visits.
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