However, bleeding within the false lumen compresses the true lumen
and impairs myocardial perfusion.
In some patients, the procedure may fail due to spasm or no true lumen
Intravascular ultrasound (IVUS) using the Volcano Eagle Eye IVUS catheter was performed to ensure location of the wire in the true lumen
distally, evaluate the nature and extent of coronary dissection, and select appropriate size of coronary artery stents.
As indicated by the CTA images, the area and pressure of the false lumen were larger than those of the true lumen
, resulting in significant reduction of true lumen
The SIDSMA was categorized into three types according to the presence of false lumen flow and true lumen
patency at the dissected segment, as described by Yun et al.
Early studies reported differences of blood flow in the false lumen compared to the true lumen
by using 2D velocity-encoded magnetic resonance imaging (MRI) .
The techniques for the retrograde approach are classified into four categories: (1) the kissing-wire technique (i.e to advance an antegrade stiff wire toward a retrograde one, which is a clear landmark of distal true lumen
), (2) the retrograde wire crossing technique, (3) the CART technique, and (4) the reverse CART (Controlled antegrade retrograde subintimal tracking) retechnique14.
AO, aorta; LA, left atrium; T, true lumen
; F, false lumen.
The "complicated" type B-AD cases were classified with two or more of the following clinical presentations: (1) Symptomatic visceral malperfusion; (2) lower limb ischemia; (3) multi-barreled AD; (4) great compression of the true lumen
<10%); (5) large primary entry tear (≥10 mm); (6) refractory hypertension; and (7) recurrent thoracic pain or pain with documented rapid aortic enlargement, interpreted to be impending rupture.
Although Leapers/UTG flashlights will also lose lumens over time, mostly due to battery charge reduction, a careful balance between heat development, current and overall runtime means that they advertise a "True Lumen
" guarantee, and that is unique in the industry.
The redesigned Outback Elite Re-Entry Catheter enables faster and more precise re-entry into the true lumen
in the most challenging cases, and represents the first ever re-entry device available in Japan.