Skip to main content
Figure 2 | BMC Cardiovascular Disorders

Figure 2

From: Acute effects of using an electronic nicotine-delivery device (electronic cigarette) on myocardial function: comparison with the effects of regular cigarettes

Figure 2

Myocardial performance index, measured by two methods: (1) Doppler flow velocity measurements of mitral inflow and left ventricular outflow tract; the index was derived by the formula: MPI = (a-b)/b, and (2) Pulsed-wave tissue Doppler measurements of mitral annulus velocity; the index was derived from the formula: MPIt = (a’-b’)/b’.

Back to article page

BMC Cardiovascular Disorders

ISSN: 1471-2261

Contact us