id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ecj-7265	Di Domenico, Sandro; Aseni, Paolo; Bonacchini, Luca; Bottiroli, Maurizio; Guerrieri, Rossella; Basile, Adriano; Bellone, Andrea	Respiratory distress due to platypnea-orthodeoxia syndrome: A diagnostic challenge in emergency setting	2018	4	.pdf	application/pdf	2805	150	48	The early presence of microbubbles in the left atrium is suggestive for intra-cardiac shunt, while a delayed appearance of the contrast is consistent with extra-cardiac shunt that in most of the cases is intrapulmonary.10 Some cases of aneurysm of the ascending aorta associated with right to left shunting across a PFO have been reported during last years.11-14 In a series of 18 patients with POS and PFO,15 4 patients had an associated aortic root aneurysm, and 12 patients presented an enlarged aortic root. The etiology of POS can be divided into four major groups: intra-car- diac shunt, pulmonary shunt, ventilation-perfusion mismatch or a combination of these as shown in Table 1.	cache/ecj-7265.pdf	txt/ecj-7265.txt