{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,3]],"date-time":"2026-05-03T01:13:28Z","timestamp":1777770808273,"version":"3.51.4"},"reference-count":0,"publisher":"S. Karger AG","license":[{"start":{"date-parts":[[2008,11,19]],"date-time":"2008-11-19T00:00:00Z","timestamp":1227052800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/karger.com\/pages\/terms-and-conditions"},{"start":{"date-parts":[[2008,11,19]],"date-time":"2008-11-19T00:00:00Z","timestamp":1227052800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/karger.com\/pages\/terms-and-conditions"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cardiology"],"abstract":"<jats:p>This study included 249 consecutive patients with suspected significant aortic valve stenosis. Using contemporary ultrasound equipment we reassessed the value of out-patient Doppler-derived maximum pressure gradients for the prediction of peak-to-peak pressure gradients measured later at heart catheterization. It was possible to record the pressure gradient in 97% of the patients by Doppler examination and in 86% at heart catheterization. There was a fair, statistically significant correlation between Doppler and invasive gradients (n = 201, r = 0.80, p &lt; 0.05, SEE = 21 mm Hg), independent of coexistent aortic regurgitation, atrial fibrillation, left ventricular function, number of days between the examinations and other variables analysed. A Doppler gradient &gt; 80 mm Hg was 98% (90-100%) predictive of critical aortic stenosis (gradient &gt; 50 mm Hg as determined by heart catheterization). Similarly, a Doppler gradient of &lt; 30 mm Hg was 98% (87-100%) predictive of non-critical stenosis. In the remaining patients (53% of the population) the Doppler gradient did not contribute decisively to clinical management.<\/jats:p>","DOI":"10.1159\/000177152","type":"journal-article","created":{"date-parts":[[2008,11,21]],"date-time":"2008-11-21T07:02:29Z","timestamp":1227250949000},"page":"545-551","source":"Crossref","is-referenced-by-count":0,"title":["Doppler Echocardiographic Estimation of the Pressure Gradient in Aortic Stenosis"],"prefix":"10.1159","author":[{"given":"Anne Pauline","family":"Schroeder","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Henrik","family":"Egeblad","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bent \u00d8stergaard","family":"Kristensen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"127","published-online":{"date-parts":[[2008,11,19]]},"container-title":["Cardiology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/karger.com\/article-pdf\/doi\/10.1159\/000177152","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T16:40:37Z","timestamp":1777480837000},"score":1,"resource":{"primary":{"URL":"https:\/\/karger.com\/article\/doi\/10.1159\/000177152"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2008,11,19]]},"references-count":0,"URL":"https:\/\/doi.org\/10.1159\/000177152","archive":["Portico"],"relation":{},"ISSN":["0008-6312","1421-9751"],"issn-type":[{"value":"0008-6312","type":"print"},{"value":"1421-9751","type":"electronic"}],"subject":[],"published":{"date-parts":[[2008,11,19]]}}}