Walker Jonathan R, Mousavi Negareh, Horlick Erich, Seifer Colette, Jassal Davinder S
Institute of Cardiovascular Sciences, St Boniface General Hospital, Winnipeg, MN, Canada.
J Am Soc Echocardiogr. 2009 Jul;22(7):863.e1-3. doi: 10.1016/j.echo.2009.02.021. Epub 2009 Apr 9.
Acute inferior ST-elevation myocardial infarction (STEMI) alone contributes to approximately 10% of in-hospital mortality due to ischemic heart disease. Right ventricular involvement occurs in 50% of patients who present with inferior STEMIs, increasing in-hospital mortality to 31%. In the setting of concomitant severe tricuspid regurgitation, acute rupture of the papillary muscles within the right ventricle should be considered in the differential diagnosis. The authors present the case of a patient with intractable hypoxia in the setting of an acute inferior STEMI complicated by rupture of the posterior tricuspid valve papillary muscle.
