Medical Calculator#echo#Contractility#echocardiogram
LV/RV Contractility (dp/dt)
1
seconds
2
About
Dp/dt represents the ratio of pressure change in the ventricular cavity during the isovolemic contraction period.
LV dP/dt is estimated by using time interval between 1 and 3 m/sec on MR velocity spectrum.
(Normal LV dp/dt is > 1200 mmHg/s).
RV dP/dt is estimated by using time interval between 1 and 2 m/sec on TR velocity spectrum.
Published Literature & References:
- [1]Oh J, Seward JB, Tajik AJ.: The Echo Manual 3rd edition. Lippincott, Williams, Wilkins. 2007
- [2]Barigiggia GS et al.: A new method for estimating left ventricular dP/dt by continuous wave Doppler-echocardiography. Validation studies at cardiac catheterization.Circulation 1989, 80 (5): 1287-92
- [3]Chung NS et al.: Measurement of left ventricular dp/dt by simultaneous Doppler echocardiography and cardiac catheterization.Journal of the American Society of Echocardiography 1992, 5 (2): 147-52
- [4]Camm AJ, Lüscher TF, Serruys P.: The ESC Textbook of Cardiovascular Medicine. Blackwell Publishing 2006
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dp/dt
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Clinical Parameters (0/2)
0%Medical calculation formulas standardized according to evidence-based clinical protocols.
About
Dp/dt represents the ratio of pressure change in the ventricular cavity during the isovolemic contraction period.
LV dP/dt is estimated by using time interval between 1 and 3 m/sec on MR velocity spectrum.
(Normal LV dp/dt is > 1200 mmHg/s).
RV dP/dt is estimated by using time interval between 1 and 2 m/sec on TR velocity spectrum.
Published Literature & References:
- [1]Oh J, Seward JB, Tajik AJ.: The Echo Manual 3rd edition. Lippincott, Williams, Wilkins. 2007
- [2]Barigiggia GS et al.: A new method for estimating left ventricular dP/dt by continuous wave Doppler-echocardiography. Validation studies at cardiac catheterization.Circulation 1989, 80 (5): 1287-92
- [3]Chung NS et al.: Measurement of left ventricular dp/dt by simultaneous Doppler echocardiography and cardiac catheterization.Journal of the American Society of Echocardiography 1992, 5 (2): 147-52
- [4]Camm AJ, Lüscher TF, Serruys P.: The ESC Textbook of Cardiovascular Medicine. Blackwell Publishing 2006