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Cardiology Research

Case Report

Volume 8, Number 5, October 2017, pages 246-253

Successful Treatment of Iatrogenic External Iliac Artery Perforation With Covered Stent: Case Report and Review of the Literature

Retroperitoneal hemorrhage from iliac artery injury is a potentially serious complication of vascular interventional procedures leading to hemorrhagic shock and death if not diagnosed early [1] and treated promptly. The reported incidence of retroperitoneal hematoma is 0.49-0.74% in patients after an interventional procedure and carries a mortality risk of 4-12% [2, 3]. The use of covered stents to repair such vascular injuries has gained popularity given the high morbidity of emergency surgical vascular repair [4, 5]. We report a life-threatening retroperitoneal bleed caused by an iatrogenic perforation of the left external iliac artery during Impella left ventricular assist device insertion for support in a high-risk coronary artery intervention procedure. The perforation was successfully sealed using an iCAST covered stent.

A 70-year-old male with known coronary artery disease and stable angina was admitted to our facility with a prolonged chest pain episode at rest, associated with dyspnea. His electrocardiogram revealed diffuse ST and T wave abnormalities indicative of ischemia and his plasma troponin I levels increased from 0.07 to 0.23 ng/mL. He was treated for non-ST-elevation myocardial infarction and underwent left heart catheterization. This revealed left anterior descending artery (LAD) with 80% proximal, 95% mid and 100% distal disease (Fig. 1a). The left circumflex and right coronary arteries were 100% occluded proximally and received collaterals from the LAD. The patient declined coronary artery bypass surgery; therefore, the decision was made to proceed with high-risk percutaneous coronary intervention (PCI) of the LAD with Impella left ventricular assist device and temporary venous pacemaker support. Left femoral artery angiogram, accessed through a 45 mm Arrow sheath, revealed severely tortuous and calcified aorta, left external iliac and left common iliac artery. The left femoral access was pre-dilated and a 14-inch Impella sheath was introduced through the left common femoral artery. He developed groin pain at the access site with mild hypotension thought to be due to sedation given, including versed and fentanyl, which responded to intravenous fluids and dopamine. He underwent successful rotational atherectomy of the proximal and mid LAD with deployment of Synergy (Boston Scientific) drug-eluting stents (Fig. 1b). Following PCI, the patient suffered acute profound hypotension necessitating intravenous fluids and vasopressor support with epinephrine. Emergency transthoracic echocardiogram did not reveal any pericardial effusion, and showed normal left ventricle (LV) and right ventricle (RV) systolic function. The Impella device was removed and selective left common iliac angiogram from the right femoral access revealed a vascular injury site with shift of the bladder to the right indicative of retroperitoneal hematoma (Fig. 2a). A digital subtraction angiogram (DSA) revealed extravasation of blood at the vascular injury site (Fig. 3a). An 8.0 × 59 mm iCAST covered stent was deployed to the left external iliac artery with successful sealing of the perforation (Figs. 2b and 3b). The Impella device site was closed with two Perclose devices. Computed tomography (CT) of the abdomen revealed large retroperitoneal bleeding along the plane of left external iliac artery (Fig. 4a, b). The patient required 4 units of packed red blood cell transfusion. His hospital course was complicated by transient acute kidney injury, with return of his renal function to baseline at discharge 10 days later.

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Figure 1. Figure 1. Left heart cathetrization RAO view showing (a) severe proximal and mid LAD disease pre PCI, Impella support device is seen in the LV, and a temporary transvenous pacemaker wire in the RV. (b) Post atherectomy and stent placement in the proximal and mid LAD.

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Figure 2. Figure 2. Peripheral angiogram of the left iliac artery showing (a) site of vascular injury and shift of the bladder to the right indicative of compression from the rapidly accumulating retroperitoneal hemaoma; (b) after endovascular repair of the left iliac perforation using a covered stent.

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Figure 3. DSA of the left iliac artery showing (a) extravasation of blood into the retroperitoneal space at the site of vascular perforation; (b) resolution of the bleeding following the deployment of a covered stent.

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Figure 4. CT of the abdomen without contrast in transverse (a) and coronal (b) planes showing site of the covered stent surrounded by retroperitoneal hemorrhage along the plane of left external iliac artery.

With the advent of progressively sophisticated endovascular therapies to treat vascular, coronary, valvular and other structural heart disease, the use of increasingly larger sheaths has been associated with a surge in iatrogenic vascular access complications [6]. Vascular perforation or rupture is a serious potential complication of any endovascular procedures and can lead to organ, limb, or life loss. The management of this deleterious complication has evolved from emergent surgery [7] to now include multiple percutaneous options including the use of prolonged balloon tamponade [8], stent grafts [9], coil embolization [10], vascular plug [11], coagulated thrombus injection [12] and localized thrombin injection [13]. Iatrogenic iliac artery injuries including dissection and perforation appear to be more common in patients with calcified atherosclerotic aorto-iliac disease and tortuous vessels [14], as was seen in our patient.

Case series or trials studying the use of devices to treat iliac artery perforation or rupture are few. One series [15] analyzed 1,642 peripheral interventions (46% iliac and 54% femoro-distal) and reported only two cases of perforation and hematoma requiring surgery (one retroperitoneal hemorrhage and one pseudo-aneurysm). Palmaz et al [16] reported a 0.9% incidence (five out of 587 procedures) of vessel rupture and pseudo-aneurysms in patients who underwent iliac artery stenting procedures. Allaire et al [17] examined 657 iliac interventions from 1981 to 2000 and found a 0.8% incidence (five patients) of vessel rupture; they recommended covered stents to treat ruptured vessels.

Risk factors associated with rupture [17-19] include calcified vessels, vascular stenosis, oversized balloons, history of recent endarterectomy, chronic steroid therapy, and diabetes mellitus. Some authors have used balloon tamponade for a few minutes as a treatment for contained bleeding [8, 19], but this method is thought to be unreliable as bleeding may resume later. In a recent series of seven iliac artery ruptures [20], all were successfully treated with stent grafts.

Endovascular therapy of traumatic and iatrogenic vascular complications varies among reports in the literature. Lagana et al [21] reported 13 patients with traumatic and iatrogenic arterial iliac ruptures who were all treated successfully with stent grafts. Hamilos and colleagues [22] reported successfully treating a large iliac artery rupture with a coated stent. Trehan et al [23] used a longer stent-graft on a shorter balloon to emergently treat an iatrogenic iliac artery rupture. Mehta et al [24] successfully treated a massive bleed from a guidewire perforation of an external iliac artery with hand-made stent-graft placement. Arat and colleagues [25] reported successful treatment of a femoral bleeding site with two covered self-expanding coronary stent-grafts. Nozary and Hashemi Fard [26] reported a rare simultaneous dissection, perforation and thrombosis of the external iliac artery following angiography which did not respond to firm compression and required arteriotomy and vascular repair. Overall, iliac artery injury and rupture outcomes have significantly improved, especially as endoluminal management has evolved as the primary treatment strategy [27].

With the introduction of the radial approach to endovascular procedures, vascular complications of the radial artery have been increasingly reported. Chatterjee et al [28], Narayan et al [29] and Al-Sekaiti et al [30] all reported successfully treating radial artery perforation during transradial catheterization using polytetrafluoroethylene-covered coronary stents. Other vascular injuries have also been reported with successful endovascular repair using covered stents including carotid injury [31, 32], subclavian injury [33], brachial injury [34] and traumatic vascular injuries [35].

Iatrogenic iliac artery injury during other intravascular or orthopedic surgery has been reported, with successful endovascular repair. Wozniak et al [36] reported six out of 328 patients (1.8%) undergoing endovascular surgery for iliac stenosis sustained iliac injury, four of whom received endovascular treatment while two required classical vascular surgery. Adovasio et al [37] and Kwolek et al [38] reported endovascular treatment of iliac artery injury following hip arthroplasty and hip prosthesis migration, respectively. Canaud et al [39] reported successful endovascular repair of iliac artery injury following lumbar spine surgery. Barbosa Barros et al [40] reported five cases of iliac artery injuries secondary to laparoscopic gynecologic procedures over a 10-year period, all treated surgically. Wang and Foley [41], however, reported successful endovascular repair of an iliac artery aneurysm and ilio-iliac fistula, sustained during laparoscopic hysterectomy.

Iatrogenic or traumatic vascular injuries remain uncommon, however, with a rising incidence due to the increasing number of endovascular therapies requiring larger catheters and sheaths and offered to older individual with vulnerable vascular anatomy. Table 1 lists some of the reported predictors for iatrogenic vascular injury which should be taken into consideration during any intravascular procedure. Although multiple modalities have been employed to seal vascular ruptures depending on the extent of bleeding and size of perforation (Table 2), endovascular treatment with covered stents appears to have emerged as the treatment of choice, especially for large, life-threatening perforations [42, 43], with great success rates of immediate control of bleeding, in addition to adequate patency rates on follow-up. When planning a coronary revascularization strategy, we recommend that a multidisciplinary team approach be implemented not only with a Heart Team approach to decide about the best interventional modality, but also with a vascular interdisciplinary team approach to help mitigate the potential risk of iatrogenic vascular complications (Fig. 5).

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Figure 5. Vascular interdisciplinary team (VIT) approach to help mitigate the risk of iatrogenic vascular complications during planned interventional procedures. OR: operating room; MAP: mean arterial pressure.

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Table 1. Predictors of Iatrogenic Vascular Complications Reported in the Literature, Divided in Potentially Modifiable Versus Non-Modifiable Factors

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Table 2. Procedures Reported in the Literature to Treat Iatrogenic Vascular Complications

Disclosures

All authors declare no disclosures related to this manuscript.

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