NDLI: Endobronchial ultrasound and esophageal ultrasound: just because we can, does not necessarily mean we should.

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Endobronchial ultrasound and esophageal ultrasound: just because we can, does not necessarily mean we should.

Content Provider	Semantic Scholar
Author	Wang, Ko Pen Feller-Kopman, David J. Mehta, Atul C. Sharma, Malay Marut Yarmus, Lonny
Copyright Year	2011
Abstract	www.chestpubs.org P 5 not signifi cant). Insuffi cient sample size (N 5 21) is a possible explanation for these negative results. Regarding the impact of inertial forces, most patients with severe pulmonary hypertension tend to have right atrial enlargement, which may minimize the impact of inertial forces and pressure recovery. Other explanations for the discrepancies may also exist beyond those cited in our study or by Dr Giardini, including the impact of changes in intrathoracic pressure occurring with respiration, which are not routinely accounted for during the standard noninvasive Doppler examination but are easily accounted for by measuring PASP at end-expiration during invasive cardiac catheterization. Thus, although we do not completely agree with the statement by Dr Giardini that limitations inherent to the modifi ed Bernoulli equation explain the inaccuracy, we do agree that it is the summation of many potential errors (including those associated with the modifi ed Bernoulli equation) that may result in clinically relevant errors in Doppler estimates of PASP in patients with pulmonary hypertension. Larger studies, which could provide additional, clinically relevant insight into the effects of oxygen saturation and hemoglobin level on the discrepancies between Doppler and invasive measurements of PASP in patients with pulmonary hypertension, should be encouraged.
Starting Page	271
Ending Page	272
Page Count	2
File Format	PDF HTM / HTML
DOI	10.1378/chest.11-0171
Alternate Webpage(s)	http://journal.publications.chestnet.org/pdfaccess.ashx?url=/data/journals/chest/22098/110171.pdf
Alternate Webpage(s)	http://journal.publications.chestnet.org/pdfaccess.ashx?resultclick=1&url=/data/journals/chest/22098/110171.pdf
PubMed reference number	21729906
Alternate Webpage(s)	https://doi.org/10.1378/chest.11-0171
Journal	Medline
Volume Number	140
Issue Number	1
Journal	Chest
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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