The Brockenbrough-Braunwald-Morrow sign

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Presentation transcript:

The Brockenbrough-Braunwald-Morrow sign Hao Cui, MD, PhD, Anita Nguyen, MBBS, Hartzell V. Schaff, MD The Journal of Thoracic and Cardiovascular Surgery Volume 156, Issue 4, Pages 1614-1615 (October 2018) DOI: 10.1016/j.jtcvs.2018.04.095 Copyright © 2018 The American Association for Thoracic Surgery Terms and Conditions

Figure 1 Brockenbrough-Braunwald-Morrow sign in obstructive hypertrophic cardiomyopathy. A, Left ventricular pressure tracing superimposed on aortic pressure tracing shows a typical Brockenbrough-Braunwald-Morrow sign before septal myectomy, with significant decrease in pulse pressure after a premature ventricular contraction. B, In the postbypass tracing, after septal myectomy, it can be seen that the premature ventricular contraction did not trigger the Brockenbrough-Braunwald-Morrow sign. Red line indicates left ventricular pressure tracing; blue line indicates aortic pressure tracing; brackets indicate pulse pressure before and after premature ventricular contraction. ECG, Electrocardiogram. The Journal of Thoracic and Cardiovascular Surgery 2018 156, 1614-1615DOI: (10.1016/j.jtcvs.2018.04.095) Copyright © 2018 The American Association for Thoracic Surgery Terms and Conditions

Figure 2 Left ventricular pressure tracing superimposed on aortic pressure tracing in a patient with valvular aortic stenosis. A, In this patient, pulse pressure did not change after a premature ventricular contraction. B, No post–premature ventricular contraction changes in pulse pressure are seen after aortic valve replacement. Red line indicates left ventricular pressure tracing; blue line indicates aortic pressure tracing; brackets indicate pulse pressure before and after premature ventricular contraction. ECG, Electrocardiogram. The Journal of Thoracic and Cardiovascular Surgery 2018 156, 1614-1615DOI: (10.1016/j.jtcvs.2018.04.095) Copyright © 2018 The American Association for Thoracic Surgery Terms and Conditions

Figure 3 Left ventricular pressure tracing superimposed on aortic pressure tracing in a patient with membranous and tunnel subaortic stenosis. A, No post–premature ventricular contraction change in pulse pressure was seen before the operation. B, After membranectomy and myectomy, there was a slight widening of arterial pulse pressure after premature ventricular contraction. Red line indicates left ventricular pressure tracing; blue line indicates aortic pressure tracing; brackets indicate pulse pressure before and after premature ventricular contraction. ECG, Electrocardiogram. The Journal of Thoracic and Cardiovascular Surgery 2018 156, 1614-1615DOI: (10.1016/j.jtcvs.2018.04.095) Copyright © 2018 The American Association for Thoracic Surgery Terms and Conditions

The Brockenbrough-Braunwald-Morrow sign in a patient with obstructive HCM. The Journal of Thoracic and Cardiovascular Surgery 2018 156, 1614-1615DOI: (10.1016/j.jtcvs.2018.04.095) Copyright © 2018 The American Association for Thoracic Surgery Terms and Conditions