Plaque Prolapse After Stent Implantation in Patients With Acute Myocardial InfarctionAn Intravascular Ultrasound Analysis
Young Joon Hong, MD, PhD,
Myung Ho Jeong, MD, PhD, FACC*,
Youngkeun Ahn, MD, PhD, FACC,
Doo Sun Sim, MD,
Jong Won Chung, MD,
Jung Sun Cho, MD,
Nam Sik Yoon, MD,
Hyun Ju Yoon, MD,
Jae Youn Moon, MD,
Kye Hun Kim, MD, PhD,
Hyung Wook Park, MD, PhD,
Ju Han Kim, MD, PhD,
Jeong Gwan Cho, MD, PhD, FACC,
Jong Chun Park, MD, PhD,
Jung Chaee Kang, MD, PhD
Heart Center of Chonnam National University Hospital, Cardiovascular Research Institute, Chonnam National University, Gwangju, Korea.
View larger version (19K):
[in this window]
[in a new window]
[Download PPT slide]
|
Figure 1 Incidence of PP in Relation to the Stent Length
Stent length was divided into 3 groups such as short stent length group (less than 18 mm, n = 137), intermediate stent length group (between 18 and 28 mm, n = 89), and long stent length group (more than 28 mm, n = 84). Plaque prolapse (PP) was most frequently observed in the group with the long stents (>28 mm) compared with the groups with short- ( 18 mm) or intermediate-length (>18 and 28 mm) stents.
|
|
View larger version (18K):
[in this window]
[in a new window]
[Download PPT slide]
|
Figure 2 Incidence of PP in Relation to the Presence or Absence of the Plaque Rupture
A ruptured plaque contained a cavity that communicated with the lumen with an overlying residual fibrous cap fragment. A fragmented and loosely adherent plaque without a distinct cavity and without a fibrous cap fragment was not considered a plaque rupture. The PP was observed more frequently in lesions with plaque rupture compared with lesions without plaque rupture.
|
|
View larger version (22K):
[in this window]
[in a new window]
[Download PPT slide]
|
Figure 3 Incidence of PP in Relation to the Remodeling Pattern
Remodeling index was defined as the lesion site external elastic membrane (EEM) cross-sectional area (CSA) divided by the average of the proximal and distal reference EEM CSA. Positive remodeling (n = 113) was defined as a remodeling index >1.05, intermediate remodeling (n = 75) as a remodeling index between 0.95 and 1.05, and negative remodeling (n = 122) as a remodeling index <0.95. The PP was most frequently observed in the group showing positive remodeling compared with the groups showing intermediate or negative remodeling.
|
|
|
