university of groningen endovascular approaches to complex … · 2020. 1. 13. · repair an...
TRANSCRIPT
University of Groningen
Endovascular approaches to complex aortic aneurysmsde Niet, Arne
DOI:10.33612/diss.111895510
IMPORTANT NOTE: You are advised to consult the publisher's version (publisher's PDF) if you wish to cite fromit. Please check the document version below.
Document VersionPublisher's PDF, also known as Version of record
Publication date:2020
Link to publication in University of Groningen/UMCG research database
Citation for published version (APA):de Niet, A. (2020). Endovascular approaches to complex aortic aneurysms. University of Groningen.https://doi.org/10.33612/diss.111895510
CopyrightOther than for strictly personal use, it is not permitted to download or to forward/distribute the text or part of it without the consent of theauthor(s) and/or copyright holder(s), unless the work is under an open content license (like Creative Commons).
Take-down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediatelyand investigate your claim.
Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons thenumber of authors shown on this cover page is limited to 10 maximum.
Download date: 16-05-2021
CHAPTER
General introduction
1
Chap
ter
1
8
1General introduction 9
An increased diameter of the abdominal aorta usually develops undetected. Once the
abdominal aorta is aneurysmatic, the risk of rupture increases. A fast growing, saccular
shaped, mycotic, or large diameter aneurysm correlates with the risk of rupture.1-3 Rupture of
an abdominal aortic aneurysm (AAA) was observed on average in a Scandinavian population
in 6 per 100,000 persons, and once ruptured out of hospital death is around 85%.4 A small
amount of people reaches the hospital in time and if left untreated virtually all patients die
from the ruptured AAA (rAAA). In treated rAAA cases, a 30-43% mortality risk still exists
in current practice.5,6 Most of these AAAs are found by chance during imaging for another
medical issue, but mortality risk once ruptured mandates active surveillance or planned
surgical treatment of the intact AAA once discovered.
Possibly the first known description of a ‘tumor of the vessels’ dates back to 1550 BC in ancient
Egypt, on the Ebers Papyrus. Although mostly regarded to pseudoaneurysms, it was the first
known description of aneurysmatic vascular disease.7 Almost two millennia later, in the 2nd
century AD, a more thorough description of an aortic aneurysm was recorded: ‘There are
two kinds of aneurysms: in the first the artery is locally dilated, in the second the artery has
been torn and has disgorged blood into the surrounding flesh.’8 This description by Antyllus
was followed by a description of opening the aneurysm, evacuating its content, removing the
dilation and tying both sides of the artery together. It was until 1817 when Sir Astley Cooper
described the treatment of an iliac artery rupture by ligating the aorta. The acute bleeding was
treated, but the patient died 48 hours post-operatively. In this case the active problem was
probably treated, but the patient did not seem to benefit.
AAA treatment similar like we currently know it was founded by Dr. Rudolph Matas in 1888
by describing the concept of endoaneurysmorrhaphy.7,9 The aneurysm was opened, clamping
was done by ‘pressure over the exposed artery by the finger of an assistant’ and the aortic wall
was folded and sutured to the abdominal wall to treat the aneurysm while preserving aortic
lumen (Figure 1).10 This technique seemed more successful, because his patient survived 18
months finally succumbing of pulmonary tuberculosis. The aorta, however, still consisted of
a weakened aneurysmatic wall.7 The use of a foreign body for the treatment of an AAA was
introduced in the 1940s, and the most famous case was the use of cellophane wrapped within
the aorta of Albert Einstein. After treatment he survived another five years, ultimately dying
from a rAAA.11 It was questionable if the wrapping prolonged survival, and in the early 1950s,
Dr Charles Dubost described the first procedure as we still perform it today. Through an open
left thoraco-abdominal approach, the abdominal aorta was resected and a human aortic graft
Chap
ter
1
10
was implanted (Figure 2).12
Since then the open abdominal surgical procedure has been
refined with the use of a synthetic tube or bi-iliac graft and
this remained unchanged for the last few decades. In these
open procedures current 30 day post-operative mortality
rate is 3-5% with a complication risk of 13-47%.13,14
To prevent complications related to major open surgical
repair an endovascular approach was introduced in the
former Soviet Union by Dr. Nikolay Volodos. In 1987 a
self-fixating synthetic endograft was introduced from the
femoral artery into the thoracic aorta for a post-traumatic
false aneurysm. The patient survived over 18 years, finally
succumbing from a myocardial infarction.15 Subsequently,
the procedure was described more thoroughly by Parodi et
al. in the early 90s (Figure 3).16
Figure 1: The concept of endoaneurysmarrhaphy described by Dr. Rudolph Matas first performed in 1888. The aortic lumen is preserved by opening the aneurysm, folding the wall of aneurysm and suturing it to the abdominal wall. 10
Figure 2: The first description of using an interposition graft by Dr. Charles Dubost in 1951.12
1General introduction 11
Figure 3: The introduction of an endograft through the femoral artery. The endograft consists of a metal stent covered by fabric and is held within a sheath during introduction. After deployment the endograft seals the abdominal aneurysm.16
15-30% with a high incidence of conversion to open repair. The endografts and delivery
systems were made by the surgeons themselves, and most complications were related to
malposition and improper release of the endograft.17 In the sequential years the design and
manufacturing shifted towards dedicated industries and surgeons gained more experience.18
Newer generations endografts had a more flexible design and with a lower profile making
optimal deployment easier.19 Different endograft designs were introduced into the market
by different manufactures and the preferred endograft can be chosen for specific anatomic
features. The 30-day post-operative complication rates improved towards 5%, with a lower
mortality rate up to 2% in EVAR versus 5% in open surgical repair.20-22 Over the recent years
these devices have been developed further, but the long-term outcome of the latest generations
endografts is not yet clear. In Chapter 2 the available studies with at least three years follow-up
of these currently available devices are reviewed.
The endograft is tied within a sheath and
introduced from the femoral arteries.
Once deployed it can seal the AAA
preventing the necessity of an open
surgical procedure. Those endografts are
usually designed with a metal stent for
support, covered by a fabric sealing of the
aneurysmal sac from blood pressure. By
placing the endograft just below the renal
arteries vascularization is maintained to
the visceral arteries, and depending on
design, blood flow is maintained to one or
both iliac arteries.
The initial results of this endovascular
aneurysm repair (EVAR) had a 30-day
post-operative complication rate of
Chap
ter
1
12
The use of these infrarenal EVAR endografts is limited in complex AAAs with certain
anatomical features. Once the aortic neck becomes too short (<10mm), too angulated (>60°),
is calcified or has a non-parallel configuration, the classic endograft cannot seal properly.23
Consequently, there is an increased risk of migration of the endograft or a type Ia endoleak.24,25
A more proximal deployment of the endograft in patients with such anatomical features,
would cover the renal arteries (RA), superior mesenteric artery (SMA) or even the celiac
axis (CA). By fenestrating the endograft at the location of those visceral arteries, the vas-
cularization is maintained, and a more proximal placement of the endograft is only limited
to sheath size (Figure 4).26,27 The fenestrations are stented with balloon expandable covered
stents to maintain vascularization. These stents have an acceptable patency rate both at early
and long-term follow-up.28 Furthermore, these stents seem to prevent rotation and migration
of the main endograft.29
The development of the fenestrated endovascular aneurysm repair (FEVAR) started with fe-
nestrating the infrarenal endograft just before procedure and adding markers to the fenestra-
tions (Figure 4).26,27,30 Currently, the fenestrated endografts are designed using dedicated
software and are customized according to individual patient anatomy. The differences and
results in current literature of commercially available custom-made endografts are reviewed
in Chapter 3.
An AAA is considered an age related disease. Life expectancy in the Western population
increases and more elderly will be in need for elective AAA treatment. Elderly often have
more comorbidities and consequently they are at higher risk for surgical repair.31 With an
already shorter life expectancy in an increasing age, treatment of an AAA might not be
beneficial regarding to survival and reintervention-free survival. Especially in complex AAA
cases outcome of FEVAR is not fully clear in the elderly.32,33 Chapter 4 compares the outcome
of FEVAR in octogenarians versus non-octogenarians for survival and reintervention-free
survival.
As described in Chapter 3, the various available fenestrated endografts consist of different
materials and the design is also slightly different. Consequently, the endografts can have a
different influence on the patient’s native anatomy. Furthermore, an inadequate endograft
conformability to the patient’s anatomy can lead to complications, ultimately necessitate rein-
terventions.34 The Zenith® Fenestrated endograft (Cook Medical, Bloomington, Indiana) was
the first introduced fenestrated endograft and contains circular stainless steel Z-stents and
1General introduction 13
Bungay. Since its introduction more experience has been gained with this specific design and
current literature is reviewed in more detail in Chapter 6. Apart from a few studies, literature
on the Fenestrated Anaconda™ for primary complex AAAs was limited. One of these studies
reported a 10% incidence of a specific procedural endoleak.35 In these cases, blood still flows
along the top of the endograft into the aneurysmal sac. Consequently, pressure remains in the
aneurysmal sac, and the risk of rupture is still present. There are up to five different endoleaks,
but this specific endoleak is called a type Ia endoleak (Figure 5).36 During the procedure type I
and type III endoleaks are considered important criteria for technical success, because mainly
those keep pressure in the aneurysmal sac. The question remains if these procedural endoleaks
influence clinical outcome and the 10% incidence of a procedural type Ia endoleak was not
seen in all studies. Therefore, in Chapter 7 a global analysis of the Fenestrated Anaconda™ is
Figure 4: Proximal part of an endograft with an enforced puncture hole (fenestration) for a more proximal placement of the endograft while maintaining vascularization of the target vessel. 27
after releasing repositioning is possible
with the diameter-reducing ties. The
Fenestrated Anaconda™ endograft
(Terumo Aortic, Inchinnan, Scotland,
UK) was introduced a few years later
and contains circular nitinol stents
with a stent free zone for fenestrations.
After deployment it is fully collapsed,
repositioned and redeployed. Chapter 5
focuses on the difference in anatomical
change in treated patients by either the
Zenith® Fenestrated or the Fenestrated
Anaconda™.
One of the newer fenestrated endografts
is the Fenestrated Anaconda™, and was
first described in 2011 by Dr. Peter
Chap
ter
1
14
carried out, particularly focusing on the incidence and clinical relevance of these procedural
endoleaks.
As discussed in this introduction, after treatment of an (r)AAA a complicated course can
necessitate a reintervention. In some cases open redo surgery can be unfavorable due
to patient comorbidities, anatomical features of the AAA, previous AAA repair or partial
involvement of the thoracic aorta (a thoraco-abdominal aortic aneurysm, TAAA). Especially
in patients with open redo surgery after previous EVAR, the procedural mortality can be as
high as 14%.37 In cases with a type Ia endoleak after EVAR, a migrated infrarenal endograft,
a TAAA involving the visceral arteries, a para-anastomotic AAA after prior open surgical
repair or a complex AAA with a normal distal aorta, a proximal cuff can be used. Placement
of this aortic cuff towards to the thoracoabdominal transition will results in devascularization
of the visceral arteries. A fenestrated aortic cuff may be a proper alternative and can be used
in such cases. The use of a Zenith® Fenestrated aortic cuff had a technical success 92% and
a one year survival rate of 94%.38 In recent years 57 cases were treated with the Fenestrated
Anaconda™ aortic cuff globally. The results from 29 of these cases were gathered and are
described in Chapter 8.
Figure 5: Description of endoleaks in fenestrated endografts. The type I and III endoleaks are considered to maintain pressure in the aneurysmal sac, consequently leading to aneurysm sac expansion and eventual rupture.36
1General introduction 15
In case the aneurysm extends to the visceral arteries, there will be too much distance between
the fenestration and the target vessel and a fenestrated endograft will not be sufficient. By
attaching a branch to the folded endograft (Branched EVAR, BEVAR), a bridge can be formed
between the placed endograft and the origin of the target vessel. After deployment of the main
endograft, with the attached branch, an additional stent will be placed within the branch to
close the gap between the branch and the target vessel. The technique was introduced in 1994
and described in 1997 by Inoue et al. for the left subclavian artery.39 Shortly thereafter, in 1995,
they introduced the similar design for an aneurysm in the descending aorta with a branch to
the celiac axis (Figure 6).40
Once a TAAA is present, 26% of patients die within two years, while open surgical repair has
an in-hospital post-operative mortality up to 22%.41,42 A branched, or combined branched and
fenestrated, EVAR (b/f EVAR) can be used to seal a TAAA or pararenal AAA. Current reported
technical success of this design ranges between 87 and 100%, but the long-term results of the
b/f EVAR are still unknown.43,44 To bridge the gap between the branch or fenestration and
the target vessel covered stents are used. The durability of these stents have been proven, but
the change in geometrical configuration over time has not yet been described before.45 The
peri-operative experience and long term
follow-up after treatment with BEVAR
is described in Chapter 9. Furthermore,
this chapter focuses on the geometrical
changes of bridging stents over time in
both branches and fenestrations.
In both Chapter 10 (English) and Chapter
11 (Dutch) these studies are summarized
and the future perspective are discussed.
Figure 6: By attaching a branch to the main endograft, a bridge can be formed between the endograft and the target vessel. The endograft and attached branch are deployed and a covered stent is placed to close the gap between the branch and the target vessel.40
Chap
ter
1
16
1.Grant SW, Hickey GL, Grayson AD, Mitchell DC, McCollum CN. National risk prediction model for elective abdominal aortic aneurysm repair. Br J Surg. 2013;100:645-53.
2.Parkinson F, Ferguson S, Lewis P, Williams IM, Twine CP, South East Wales Vascular Network. Rupture rates of untreated large abdominal aortic aneurysms in patients unfit for elective repair. J Vasc Surg. 2015;61:1606-12.
3.Chaikof EL, Dalman RL, Eskandari MK, Jackson BM, Lee WA, Mansour MA, et al. The Society for Vascular Surgery practice guidelines on the care of patients with an abdominal aortic aneurysm. J Vasc Surg. 2018;67:2-77.
4.Bengtsson H, Bergqvist D. Ruptured abdominal aortic aneurysm: a population-based study. J Vasc Surg. 1993;18:74-80.
5.Gupta AK, Dakour-Aridi H, Locham S, Nejim B, Veith FJ, Malas MB. Real-world evidence of superiority of endovascular repair in treating ruptured abdominal aortic aneurysm. J Vasc Surg. 2018;68:74-81.
6.Briggs CS, Sibille JA, Yammine H, Ballast JK, Anderson W, Nussbaum T, et al. Short-term and midterm survival of ruptured abdominal aortic aneurysms in the contemporary endovascular era. J Vasc Surg. 2018;68:408,414.e1.
7.Bobadilla JL. From Ebers to EVARs: A Historical Perspective on Aortic Surgery. Aorta (Stamford). 2013;1:89-95.
8.Prioreschi P. A history of Medicine: Roman medicine. 2nd ed. Horatius Press; 1996.
9.Livesay JJ, Messner GN, Vaughn WK. Milestones in the treatment of aortic aneurysm: Denton A. Cooley, MD, and the Texas Heart Institute. Tex Heart Inst J. 2005;32:130-4.
10.Matas R. I. An Operation for the Radical Cure of Aneurism based upon Arteriorrhaphy. Ann Surg. 1903;37:161-96.
11.Cohen JR, Graver LM. The ruptured abdominal aortic aneurysm of Albert Einstein. Surg Gynecol Obstet. 1990;170:455-8.
12.Dubost C, Allary M, Oeconomos N. Resection of an aneurysm of the abdominal aorta: reestablishment of the continuity by a preserved human arterial graft, with result after five months. AMA Arch Surg. 1951;44:848-51.
13.Conrad MF, Crawford RS, Pedraza JD, Brewster DC, Lamuraglia GM, Corey M, et al. Long-term durability of open abdominal aortic aneurysm repair. J Vasc Surg.
2007;46:669-75.
14.Landry GJ, Liem TK, Abraham CZ, Jung E, Moneta GL. Predictors of perioperative morbidity and mortality in open abdominal aortic aneurysm repair. Am J Surg. 2019.
15.Volodos NL. The 30th Anniversary of the First Clinical Application of Endovascular Stent-grafting. Eur J Vasc Endovasc Surg. 2015;49:495-7.
16.Parodi JC, Palmaz JC, Barone HD. Transfemoral intraluminal graft implantation for abdominal aortic aneurysms. Ann Vasc Surg. 1991;5:491-9.
17.Chuter TA, Risberg B, Hopkinson BR, Wendt G, Scott RA, Walker PJ, et al. Clinical experience with a bifurcated endovascular graft for abdominal aortic aneurysm repair. J Vasc Surg. 1996;24:655-66.
18.Tadros RO, Sher A, Kang M, Vouyouka A, Ting W, Han D, et al. Outcomes of using endovascular aneurysm repair with active fixation in complex aneurysm morphology. J Vasc Surg. 2018.
19.Maudet A, Daoudal A, Cardon A, Clochard E, Lucas A, Verhoye JP, et al. Endovascular Treatment of Infrarenal Aneurysms: Comparison of the Results of Second- and Third-Generation Stent Grafts. Ann Vasc Surg. 2016;34:95-105.
20.Prinssen M, Verhoeven EL, Buth J C, P.W., van Sambeek M.R., Balm R, Buskens E, et al. A randomized trial comparing conventional and endovascular repair of abdominal aortic aneurysms. N Engl J Med. 2004;351:1607-18.
21.Greenhalgh RM, Brown LC, Kwong GP, Powell JT, Thompson SG, EVAR trial participants. Comparison of endovascular aneurysm repair with open repair in patients with abdominal aortic aneurysm (EVAR trial 1), 30-day operative mortality results: randomised controlled trial. Lancet. 2004;364:843-8.
22.Lederle FA, Freischlag JA, Kyriakides TC, Padberg FT,Jr, Matsumura JS, Kohler TR, et al. Outcomes following endovascular vs open repair of abdominal aortic aneurysm: a randomized trial. JAMA. 2009;302:1535-42.
23.Chisci E, Kristmundsson T, de Donato G, Resch T, Setacci F, Sonesson B, et al. The AAA with a challenging neck: outcome of open versus endovascular repair with standard and fenestrated stent-grafts. J Endovasc Ther. 2009;16:137-46.
24.Sternbergh WC,3rd, Carter G, York JW, Yoselevitz M, Money SR. Aortic neck angulation predicts adverse outcome with endovascular abdominal aortic aneurysm repair. J Vasc Surg. 2002;35:482-6.
References
1General introduction 17
25.Sampaio SM, Panneton JM, Mozes GI, Andrews JC, Bower TC, Karla M, et al. Proximal type I endoleak after endovascular abdominal aortic aneurysm repair: predictive factors. Ann Vasc Surg. 2004;18:621-8.
26.Park JH, Chung JW, Choo IW, Kim SJ, Lee JY, Han MH. Fenestrated stent-grafts for preserving visceral arterial branches in the treatment of abdominal aortic aneurysms: preliminary experience. J Vasc Interv Radiol. 1996;7:819-23.
27.Browne TF, Hartley D, Purchas S, Rosenberg M, Van Schie G, Lawrence-Brown M. A fenestrated covered suprarenal aortic stent. Eur J Vasc Endovasc Surg. 1999;18:445-9.
28.Grimme FA, Zeebregts CJ, Verhoeven EL, Bekkema F, Reijnen MM, Tielliu IF. Visceral stent patency in fenestrated stent grafting for abdominal aortic aneurysm repair. J Vasc Surg. 2014;59:298-306.
29.England A, García-Fiñana M, Fisher RK, Naik JB, Vallabhaneni SR, Brennan JA, et al. Migration of fenestrated aortic stent grafts. J Vasc Surg. 2013;57:1543-52.
30.Uflacker R, Robison JD, Schonholz C, Ivancev K. Clinical experience with a customized fenestrated endograft for juxtarenal abdominal aortic aneurysm repair. J Vasc Interv Radiol. 2006;17:1935-42.
31.Lange C, Leurs LJ, Buth J, Myhre HO, EUROSTAR collaborators. Endovascular repair of abdominal aortic aneurysm in octogenarians: an analysis based on EUROSTAR data. J Vasc Surg. 2005;42:624-30.
32.Hertault A, Sobocinski J, Kristmundsson T, Maurel B, Dias NV, Azzaoui R, et al. Results of F-EVAR in octogenarians. Ann Vasc Surg. 2014;28:1396-401.
33.Roy IN, Millen AM, Jones SM, Vallabhaneni SR, Scurr JR, McWilliams RG, et al. Long-term follow-up of fenestrated endovascular repair for juxtarenal aortic aneurysm. Br J Surg. 2017;104:1020-7.
34.Schuurmann RCL, van Noort K, Overeem SP, van Veen R, Ouriel K, Jordan WD,Jr, et al. Determination of Endograft Apposition, Position, and Expansion in the Aortic Neck Predicts Type Ia Endoleak and Migration After Endovascular Aneurysm Repair. J Endovasc Ther. 2018:1526602818764616.
35.Dijkstra ML, Tielliu IF, Meerwaldt R, Pierie M, van Brussel J, Schurink GW, et al. Dutch experience with the fenestrated Anaconda endograft for short-neck
infrarenal and juxtarenal abdominal aortic aneurysm repair. J Vasc Surg. 2014;60:301-7.
36.Jain AK, Oderich GS, Tenorio ER, Karkkainen JM, Mendes BC, Macedo TA, et al. Natural history of target vessel endoleaks after fenestrated-branched endovascular aortic repair. J Vasc Surg. 2018;67:e53-4.
37.Locati P, Socrate AM, Costantini E. Paraanastomotic aneurysms of the abdominal aorta: a 15-year experience review. Cardiovasc Surg. 2000;8:274-9.
38.Katsargyris A, Yazar O, Oikonomou K, Bekkema F, Tielliu I, Verhoeven EL. Fenestrated stent-grafts for salvage of prior endovascular abdominal aortic aneurysm repair. Eur J Vasc Endovasc Surg. 2013;46:49-56.
39.Inoue K, Iwase T, Sato M, Yoshida Y, Tanaka T, Kubota Y, et al. Clinical application of transluminal endovascular graft placement for aortic aneurysms. Ann Thorac Surg. 1997;63:522-8.
40.Inoue K, Iwase T, Sato M, Yoshida Y, Ueno K, Tamaki S, et al. Transluminal endovascular branched graft placement for a pseudoaneurysm: reconstruction of the descending thoracic aorta including the celiac axis. J Thorac Cardiovasc Surg. 1997;114:859-61.
41.Hansen PA, Richards JM, Tambyraja AL, Khan LR, Chalmers RT. Natural history of thoraco-abdominal aneurysm in high-risk patients. Eur J Vasc Endovasc Surg. 2010;39:266-70.
42.Cowan JA,Jr, Dimick JB, Henke PK, Huber TS, Stanley JC, Upchurch GR,Jr. Surgical treatment of intact thoracoabdominal aortic aneurysms in the United States: hospital and surgeon volume-related outcomes. J Vasc Surg. 2003;37:1169-74.
43.Gallitto E, Gargiulo M, Freyrie A, Massoni CB, Pini R, Mascoli C, et al. Endovascular Repair of Thoracoabdominal Aortic Aneurysm in High-Surgical Risk Patients: Fenestrated and Branched Endografts. Ann Vasc Surg. 2017;40:170-7.
44.Baba T, Ohki T, Kanaoka Y, Maeda K, Ohta H, Fukushima S, et al. Clinical Outcomes of Spinal Cord Ischemia after Fenestrated and Branched Endovascular Stent Grafting during Total Endovascular Aortic Repair for Thoracoabdominal Aortic Aneurysms. Ann Vasc Surg. 2017;44:146-57.
45.Mastracci TM, Greenberg RK, Eagleton MJ, Hernandez AV. Durability of branches in branched and fenestrated endografts. J Vasc Surg. 2013;57:926-33.