Limitations

• Not valid for multiple jets
• Small values; small measurement errors leads to large % error
• Intermediate values need confirmation
• Affected by systolic changes in regurgitant flow

Usefulness/Advantages

• Relatively quick and easy
• Relatively independent of haemodynamic factors
• Not affected by other valve leak
• Good for extremes MR: mild vs. Severe
• Can be used in eccentric jet