Can the left ventricular early diastolic tissue-to-blood time interval be used to identify a normal pulmonary capillary wedge pressure?
| Autor: | Ronny Wikh, Anita Persson, Kenneth Caidahl, Cecilia Wallentin Guron |
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| Rok vydání: | 2007 |
| Předmět: |
Male
medicine.medical_specialty Time Factors Diastole Reference Values Internal medicine medicine Humans Ventricular Function Radiology Nuclear Medicine and imaging Pulmonary Wedge Pressure Systole Pulmonary wedge pressure Aged Echocardiography Doppler Pulsed Pulsed doppler E/A ratio business.industry Models Cardiovascular Reproducibility of Results General Medicine Middle Aged Preload Cardiology Early diastolic Female Cardiology and Cardiovascular Medicine Normal pulmonary capillary wedge pressure business |
| Zdroj: | European Journal of Echocardiography. 8:94-101 |
| ISSN: | 1525-2167 |
| DOI: | 10.1016/j.euje.2006.02.003 |
| Popis: | The pulsed Doppler early diastolic left ventricular (LV) tissue (e)-blood (E) onset temporal relationship (e-E) is suggested to predict pulmonary capillary wedge pressure (PCWP), through the formulas: tau = 32 + 0.7(e-E) and PCWP = LV end-systolic pressure x e(-IVRT/tau). Small changes/errors in E could influence the quotient IVRT/tau by oppositely affecting IVRT and e-E. At rest in 50 healthy individuals we noted: e-E: 2 +/- 14 ms; IVRT: 89 +/- 17 ms; calculated tau: 33 +/- 10 ms; and PCWP: 9 +/- 9 mmHg (12 mmHg in 28%). Non-pharmacological preload alterations in 14 individuals rendered an intraindividual 'PCWP'-fluctuation of up to 40 mmHg. This application may therefore not be clinically robust. |
| Databáze: | OpenAIRE |
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