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 Table of Contents    
CASE REPORT  
Year : 2011  |  Volume : 45  |  Issue : 6  |  Page : 563-564
Arterio-venous fistula following a lumbar disc surgery


Medi-Clinic Unit of Peripheral Vascular Disease, Department of General Surgery, Steve Biko Academic Hospital, University of Pretoria, Pretoria, South Africa

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Date of Web Publication4-Nov-2011
 

   Abstract 

Vascular complications during posterior lumbar disc surgery are rare and its presentation with varicose veins is even rarer. A 23 year-old male patient presented with large varicose veins in right lower limb. He underwent a posterior lumbar spine discectomy surgery. He noticed mild swelling of the distal third right lower limb 3 months after index surgery and reported 6 months later when he developed varicose veins. Duplex Doppler confirmed varicose veins of the long saphenous vein and its tributaries with a patent deep venous system. A digital subtraction angiogram demonstrated a large right common iliac artery (CIA) false aneurysm with an arteriovenous fistula between right common iliac vessels. He had a right CIA covered stent insertion with good results. Varicose veins were later managed with sapheno-femoral junction ligation and a below knee long saphenous vein stripping. At six month follow-up the lower limb swelling had completely recovered and duplex ultrasound did not show any recurrence of varicose veins.

Keywords: Lumbar disc surgery, vascular complications, arterio-venous fistula, varicose veins

How to cite this article:
Mulaudzi TV, Sikhosana MH. Arterio-venous fistula following a lumbar disc surgery. Indian J Orthop 2011;45:563-4

How to cite this URL:
Mulaudzi TV, Sikhosana MH. Arterio-venous fistula following a lumbar disc surgery. Indian J Orthop [serial online] 2011 [cited 2019 Jun 20];45:563-4. Available from: http://www.ijoonline.com/text.asp?2011/45/6/563/86418

   Introduction Top


Vascular complications during posterior lumbar disc surgery are rare and its presentation with varicose veins is even rarer. This report describes a patient with an arterio-venous fistula (AVF) between the right common iliac artery (CIA) and vein following a posterior approach lumbar disc surgery. Patient presented with right lower limb varicose veins which to the best of our knowledge has not been reported before. The AVF was managed with an endovascular covered stent.


   Case Report Top


A 23 year-old male patient presented with large varicose veins in right lower limb. He underwent a posterior lumbar discectomy surgery 6 months ago for chronic lower back pain at another hospital. The preoperative imaging were not available for review. He gave a history of intraoperative blood loss needing post operative blood transfusion. There were no other immediate postoperative events and he was discharged from hospital with no further complications. He had noticed mild swelling of the distal third right lower limb 3 months after index surgery but reported later when he developed varicose veins.

On examination he had large varicose veins with a palpable thrill on the right groin. Popliteal, posterior tibial and dorsalis pedis pulses were palpable. He had bruit on the right inguinal and lower back area. Duplex Doppler confirmed varicose veins of the long saphenous vein and its tributaries with a patent deep venous system. A digital subtraction angiogram demonstrated a large right CIA false aneurysm with an AVF between right common iliac vessels. It also demonstrated a left-sided inferior vena cava crossing to the right at renal level [Figure 1]. An echocardiogram revealed an ejection fraction of 63% with no ventricular hypertrophy.
Figure 1: Angiogram with a catheter via a left common femoral artery showing a right common iliac artery false aneurysm, right common iliac vessels arteriovenous fistula and a left-sided inferior vena cava

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Owing to extensive pelvic venous hypertension open repair was deemed too hazardous. Even though this was a young patient, and questionable durability of covered stent, endovascular intervention was thought to be the treatment of choice. He had a right CIA-covered stent insertion with good results [Figure 2]. Varicose veins were later managed with sapheno-femoral junction ligation and a below knee long saphenous vein stripping. At six months follow up the lower limb swelling had completely recovered and duplex ultrasound did not show any recurrence of varicose veins.
Figure 2: Angiogram postendovascular intervention, a covered stent in the right common iliac artery

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Vascular complications during lumbar disc surgery are rare with a reported incidence of 0.016-0.17%. [1],[2] Mortality rate from these injuries could be as high as 61%. [1],[3] AVF as a complication of lumbar disc surgery has been reported before but these were managed with open surgical intervention. [4] It is important for surgeons who operate in this area to familiarize themselves with anatomy of major abdominal vessels and their close relationship to the lumbar vertebrae. Vascular injuries might be due to inexperienced surgeons operating in this area or lack of knowledge of major vessels anatomy. Other causes of vascular injuries are surgeons who deviate from the surgical principles of lumbar disc surgery. This patient probably had direct trauma to both right CIA and vein. Of significance is for the vascular injuries to be identified early intraoperatively and managed accordingly. This can reduce the high mortality rate associated with these injuries. [4] Important signs that should not be ignored are hypotension and hemorrhage. [4],[5] The anatomical awareness of vascular structures and a high index of suspicion for vascular injuries will reduce both the morbidity and mortality rate.

Long-term durability of covered stents is still unknown and follow up of this patient will assist in providing the answer.

 
   References Top

1.Anda S, Aakhus S, Skaanes KO, Sande E, Schrader H. Anterior perforations in lumber discectomies. A report of four cases of vascular complications and a CT study of the prevertebral lumber anatomy. Spine (Phila Pa 1976) 1991;16:54-60.  Back to cited text no. 1
    
2.Ramirez LF, Thisted R. Complications and demographic characteristics of patients undergoing lumbar discectomy in community hospital. Neurosurgery 1989;25:226-31.  Back to cited text no. 2
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3.Sande E, Myhre HO, Witsoe E, Lundbom J, Stolt-Nielsen A, Anda S. Vascular complications of lumber disc surgery. Case report. Eur J Surg 1991;157:141-3.  Back to cited text no. 3
    
4.Bingol H, Cingoz F, Yilmaz AT, Yasar M, Tatar H. Vascular complications related to lumbar disc surgery. J Neurosurg 2004;100:249-53.  Back to cited text no. 4
[PUBMED]    
5.Jarstfer BS, Rich NM. The challenge of arteriovenous fistula formation following disc surgery: A collective review. J Trauma 1976;16:726-33.  Back to cited text no. 5
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Correspondence Address:
Thanyani V Mulaudzi
Department of General Surgery, Vascular Surgery Unit, University of Pretoria, PO Box 667, Pretoria
South Africa
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0019-5413.86418

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    Abstract
   Introduction
   Case Report
   Discussion
    References
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