Login | Users Online: 217  
Home Print this page Email this page Small font sizeDefault font sizeIncrease font size   
Home | About us | Editorial board | Search | Ahead of print | Current Issue | Archives | Submit article | Instructions | Subscribe | Advertise | Contact us
 


 
Table of Contents
CASE REPORT
Year : 2015  |  Volume : 16  |  Issue : 4  |  Page : 161-163  

Left ventricular outflow tract pseudoaneurysm formation following three aortic valve replacement surgeries


1 Cardiology Division, Massachusetts General Hospital, Boston, USA
2 Cardiology Division, University of Puerto Rico, Puerto Rico, USA

Date of Web Publication18-Dec-2015

Correspondence Address:
Nasrien E Ibrahim
32 Fruit Street, Yawkey 5962, Boston, MA 02108
USA
Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1995-705X.172209

Rights and Permissions
   Abstract 

We present a case of a pseudoaneurysm arising from the left ventricular outflow tract/aortic root as a complication of aortic valve surgery. A 45-year-old Nigerian female presented to our institution's emergency department with chest discomfort. She had three bioprosthetic aortic valve replacements in the preceding year at an outside institution for aortic regurgitation and wanted a second opinion on remaining surgical options. The learning points relevant to this case are as follows: (1) Recognizing potential complications postmultiple valve surgeries, (2) screening patients for chronic infections and rheumatologic conditions that can contribute to failed valve surgeries.

Keywords: Aortic valve prosthesis, aortic valve replacement, echocardiography, pseudoaneurysm


How to cite this article:
Ibrahim NE, Lopez-Candales A. Left ventricular outflow tract pseudoaneurysm formation following three aortic valve replacement surgeries. Heart Views 2015;16:161-3

How to cite this URL:
Ibrahim NE, Lopez-Candales A. Left ventricular outflow tract pseudoaneurysm formation following three aortic valve replacement surgeries. Heart Views [serial online] 2015 [cited 2018 May 24];16:161-3. Available from: http://www.heartviews.org/text.asp?2015/16/4/161/172209


   Introduction Top


While aortic valve replacement (AVR) is the treatment of choice for several aortic valve disorders; [1] it is important to recognize some complications post this surgical procedure. Most importantly, these include valve dehiscence, conduction abnormalities, thrombosis, infective endocarditis, fistulas, and left ventricular outflow tract (LVOT) pseudoaneurysms, among others. [1],[2],[3] Current imaging modalities such as echocardiography, computed tomography (CT), and magnetic resonance imaging have allowed us to detect these potential complications during follow-up of postoperative patients. In this case report, we present the case of a patient with three previous surgical bioprosthetic AVRs who presented to our institution for an additional surgical opinion. An LVOT/aortic root pseudoaneurysm was identified by echocardiography and confirmed by CT. Images of this worrisome AVR complication are presented.


   Case Report Top


A 45-year-old Nigerian female was seen in our emergency department complaining of chest pain. Her history was remarkable for having three bioprosthetic AVR procedures in the preceding year at another institution, the most recent being 6 months prior to the presentation. The initial indication for AVR was aortic regurgitation and her previous valve surgeries were noted to be complicated by endocarditis. Her past medical history is remarkable for childhood malarial and typhoid infections; all completely treated.

She had no other significant past medical history. She complained of dyspnea on exertion, chest discomfort, orthopnea, and the need for supplemental oxygen at home; therefore, she requested a second opinion regarding any remaining surgical options to treat her disabling symptoms. During her hospital course, an echocardiogram was obtained that demonstrated the sewing ring to be positioned higher than it normally is above the Sinuses of Valsalva [Figure 1], [Video 3 and 4]. A small mass was also noted on the posterior portion of the sewing ring with a fibrinous strand going to the base of the native aortic annulus [Figure 1]. A mild perivalvular leak was also noted [Figure 2] and [Video 5]. More interestingly, there appeared to be a 2 cm perforation in the LVOT and a large clear space in the lateral pericardial wall consistent with a pseudoaneurysm [Figure 3]. Contrast was used to opacify the chambers and the pseudoaneurysm is clearly seen [Figure 4], [Videos 1, 2 and 6]. Rheumatology, allergy and immunology, as well as infectious diseases services were consulted to assist with management of this case and determine if there was any underlying process contributing to her bioprosthetic AVR failure and development of the postsurgical pseudoaneurysm. They were unable to demonstrate any underlying systemic process as contributing to her cardiac disease. The patient had a cardiac CT that confirmed echocardiographic findings. The CT demonstrated a large multilobulated pseudoaneurysm arising from the LVOT/aortic root. The volume of the pseudoaneurysm cavity measured 197.9 mL.
Figure 1: Parasternal long view showing the sewing ring to be positioned higher than it normally is above the Sinuses of Valsalva (arrow) and a small mass was also noted on the posterior portion of the sewing ring with a fibrinous strand going to the base of the native aortic annulus. LV = Left ventricle, LA = Left atrium

Click here to view
Figure 2: Parasternal long view showing mild perivalvular leak

Click here to view
Figure 3: Apical 4-chamber showing 2 cm perforation in the left ventricular outflow tract and a large clear space in the lateral pericardial wall consistent with a pseudoaneurysm. RV = Right ventricle, PSA = Pseudoaneurysm

Click here to view
Figure 4: Apical 4-chamber with contrast demonstrating the pseudoaneurysm clearly

Click here to view





















   Discussion Top


Aortic valve replacement surgery is associated with multiple complications. Formation of a pseudoaneurysm can occur especially after multiple valve surgeries. The development of the pseudoaneurysm is most times related to suturing technique. The high-velocity blood flow in the LVOT enters the tear formed by the suture and a pseudoaneurysm develops. [4],[5] Barbetseas and colleagues used echocardiography for evaluation of aortic aneurysms after AVR. [6] Even though transthoracic echocardiography clearly documented the presence of the pseudoaneurysm that formed postoperatively in our case; cardiac CT was ordered for confirmatory purposes to reach a final therapeutic decision. In our patient's case, the decision of whether or not to reoperate has not yet been made.

 
   References Top

1.
Groves P. Valve disease: Surgery of valve disease: Late results and late complications. Heart 2001;86:715-21.  Back to cited text no. 1
    
2.
Okajima T, Wada T, Akutsu K, Yoshimuta T, Sakamoto S, Tamori Y, et al. Giant aortic root aneurysm after aortic valve replacement. Can J Cardiol 2008;24:e109.  Back to cited text no. 2
    
3.
Gupta R, Jammula P, Huang MH, Atar S, Ahmad M. An unusual complication after aortic valve replacement. J Clin Ultrasound 2006;34:361-4.  Back to cited text no. 3
    
4.
Tsai IC, Hsieh SR, Chern MS, Huang HT, Chen MC, Tsai WL, et al. Pseudoaneurysm in the left ventricular outflow tract after prosthetic aortic valve implantation: Evaluation upon multidetector-row computed tomography. Tex Heart Inst J 2009;36:428-32.  Back to cited text no. 4
    
5.
Van Dyck M, Glineur D, de Kerchove L, El Khoury G. Complications after aortic valve repair and valve-sparing procedures. Ann Cardiothorac Surg 2013;2:130-9.  Back to cited text no. 5
    
6.
Barbetseas J, Crawford ES, Safi HJ, Coselli JS, Quinones MA, Zoghbi WA. Doppler echocardiographic evaluation of pseudoaneurysms complicating composite grafts of the ascending aorta. Circulation 1992;85:212-22.  Back to cited text no. 6
    


    Figures

  [Figure 1], [Figure 2], [Figure 3], [Figure 4]



 

Top
 
  Search
 
    Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
    Access Statistics
    Email Alert *
    Add to My List *
* Registration required (free)  

 
  In this article
    Abstract
   Introduction
   Case Report
   Discussion
    References
    Article Figures

 Article Access Statistics
    Viewed569    
    Printed5    
    Emailed0    
    PDF Downloaded51    
    Comments [Add]    

Recommend this journal