Pulmonary to Systemic Flow Ratio in Precapillary Pulmonary Hypertension Without Left-to-Right Shunts: A Prognostic Implication of the Fick Method

Autor: Kemal Can Tertemiz, Dilek Sezgin, Burak Açar, Can Sevinc, Bahri Akdeniz, Mehmet Yilmaz, Merih Birlik, Bihter Şentürk, Buse Ozcan Kahraman, Ebru Özpelit
Rok vydání: 2021
Předmět:
Zdroj: Bakirkoy Tip Dergisi / Medical Journal of Bakirkoy. 17:227-232
ISSN: 1305-9327
1305-9319
DOI: 10.4274/bmj.galenos.2021.67044
Popis: Objective: We routinely calculate the pulmonary to systemic (Qp/Qs) ratio to avoid missing any left-to-right shunts in patients with precapillary pulmonary hypertension (PH). However, the pulmonary artery oxygen saturation (SpaO(2)) was lower than the mixed venous oxygen saturation (SmvO(2)) calculated using the formula; hence, the Qp/Qs ratio was calculated as less than "1" in some patients despite the absence of any detectable shunt. We hypothesized that this observation might have prognostic significance; however, to the best of our knowledge, it has not been investigated yet. Therefore, we aimed to examine the prognostic value of the Qp/Qs ratio in precapillary PH without left-to-right shunts.
Databáze: OpenAIRE