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[Color M-mode Doppler for postoperative estimation of pulmonary capillary wedge pressure]
S Thierry1, D Thébert, E Brocas
1Service de chirurgie cardiaque, CHU Henri-Mondor, avenue du Maréchal-de-Lattre-de-Tassigny, 94010 Créteil, France. stephane.thierry@ch-sud-francilien.fr <stephane.thierry@ch-sud-francilien.fr>
Annales Francaises D'Anesthesie Et De Reanimation
|October 9, 2004
Summary
The E/Vp ratio, derived from Doppler echocardiography, reasonably estimates pulmonary capillary wedge pressure (PAPO) in post-cardiac surgery patients. This non-invasive method offers valuable insights for managing these patients.
Area of Science:
- Cardiology
- Medical Imaging
- Echocardiography
Background:
- Pulmonary capillary wedge pressure (PAPO) is a critical hemodynamic parameter.
- Accurate PAPO measurement is vital for managing post-cardiac surgery patients.
- Non-invasive methods for PAPO estimation are highly desirable.
Purpose of the Study:
- To assess the accuracy of the E/Vp ratio for estimating PAPO.
- To evaluate the E/Vp index in patients following cardiac surgery.
Main Methods:
- Prospective clinical trial involving post-cardiac surgery patients.
- Transthoracic echocardiography was used to measure peak early E transmitral pulsed Doppler velocities and color M-mode Doppler flow propagation velocity (Vp).
- The E/Vp ratio was compared with simultaneously obtained pulmonary capillary wedge pressure (PAPO).
Main Results:
- The study included 38 patients.
- A significant correlation (r = 0.71, p < 0.0001) was found between PAPO and E/Vp.
- The E/Vp ratio demonstrated 79% sensitivity and 79% specificity for predicting PAPO > 15 mmHg.
Conclusions:
- The E/Vp ratio is a reasonably accurate Doppler echocardiography-derived index for estimating PAPO.
- This non-invasive method can be reliably used in post-cardiac surgery patients.