Phasic flow patterns of right versus left coronary arteries in patients undergoing clinical physiological assessment
Henry Seligman, Sukhjinder Nijjer, Tim P. van de Hoef, Guus A. de Waard, Hernán Mejía‐Rentería, Mauro Echavarría‐Pinto, Matthew Shun‐Shin, James P. Howard, Christopher Cook, Takayuki Warisawa, Yousif Ahmad, Vitaliy Androshchuk, Christopher Rajkumar, Alexandra N. Nowbar, Mihir A Kelshiker, Martijn A. van Lavieren, Martijn Meuwissen, Ibrahim Danad, Paul Knaapen, Sayan Sen, Rasha Al‐Lamee, Jamil Mayet, Javier Escaned, Jan J. Piek, Niels van Royen, Justin E. Davies, Dárrel P. Francis, Ricardo Petraco
Abstract
BACKGROUND: Coronary blood flow in humans is known to be predominantly diastolic. Small studies in animals and humans suggest that this is less pronounced or even reversed in the right coronary artery (RCA). AIMS: This study aimed to characterise the phasic patterns of coronary flow in the left versus right coronary arteries of patients undergoing invasive physiological assessment. METHODS: We analysed data from the Iberian-Dutch-English Collaborators (IDEAL) study. A total of 482 simultaneous pressure and flow measurements from 301 patients were included in our analysis. RESULTS: <0.001, p=0.98). CONCLUSIONS: In patients with coronary artery disease undergoing physiological assessment, diastolic flow predominance is seen in both left and right coronary arteries. Clinical interpretation of coronary physiological data should therefore not differ between the left and the right coronary systems.