Prosthetic Heart Valve Severity Scales

Flashcards covering the severity scales for prosthetic aortic (AV) and mitral (MV) valve stenosis based on Zoghbi et al. (2009).

Normal Peak Velocity (Prosthetic AV)

<3\,m/sec

Possible Stenosis Peak Velocity (Prosthetic AV)

$$3-4\,m/sec$$

Significant Stenosis Peak Velocity (Prosthetic AV)

>4\,m/sec

Normal Mean PG (Prosthetic AV)

<20\,mmHg

Possible Stenosis Mean PG (Prosthetic AV)

$$20-35\,mmHg$$

Significant Stenosis Mean PG (Prosthetic AV)

>35\,mmHg

Normal Effective Orifice Area (Prosthetic AV)

>1.2\,cm^2

Possible Stenosis Effective Orifice Area (Prosthetic AV)

$$0.8-1.2\,cm^2$$

Significant Stenosis Effective Orifice Area (Prosthetic AV)

<0.8\,cm^2

Normal Acceleration Time (Prosthetic AV)

<80\,ms

Possible Stenosis Acceleration Time (Prosthetic AV)

$$80-100\,ms$$

Significant Stenosis Acceleration Time (Prosthetic AV)

>100\,ms

Normal Peak Velocity (Prosthetic MV)

< 1.9\,m/sec

Possible Stenosis Peak Velocity (Prosthetic MV)

$$1.9-2.5\,m/sec$$

Significant Stenosis Peak Velocity (Prosthetic MV)

> 2.5\,m/sec

Normal Mean PG (Prosthetic MV)

<5\,mmHg

Possible Stenosis Mean PG (Prosthetic MV)

$$6-10\,mmHg$$

Significant Stenosis Mean PG (Prosthetic MV)

>10\,mmHg

Normal Effective Orifice Area (Prosthetic MV)

>2\,cm^2

Possible Stenosis Effective Orifice Area (Prosthetic MV)

$$1-2\,cm^2$$

Significant Stenosis Effective Orifice Area (Prosthetic MV)

<1\,cm^2

Normal Pressure Half Time (Prosthetic MV)

< 130\,ms

Possible Stenosis Pressure Half Time (Prosthetic MV)

$$130-200\,ms$$

Significant Stenosis Pressure Half Time (Prosthetic MV)

< 200\,ms