Year : 2019  |  Volume : 22  |  Issue : 4  |  Page : 437--438

Ipsilateral foot drop after aortobifemoral bypass


Monish S Raut1, Vijay Mohan Hanjoora1, Akhil Govil2, Paritosh Gupta3,  
1 Department of Cardiac Anaesthesiology, Artemis Hospitals, Gurgaon, Haryana, India
2 Department of Cardiac Surgery, Artemis Hospitals, Gurgaon, Haryana, India
3 Department of General Surgery, Artemis Hospitals, Gurgaon, Haryana, India

Correspondence Address:
Monish S Raut
Department of Cardiac Anaesthesiology, Artemis Hospitals, Gurgaon, Haryana
India

Abstract

Peripheral nerves can be injured by a direct result of the anesthetic technique of regional anesthesia or it can be contributed/compounded by poor perioperative positioning and padding, tourniquets, and the nature of surgery and diseases affecting the microvasculature of nerves. We present a case of perioperative peripheral nerve injuries which could not be explained by anesthesia technique nor surgery per se.



How to cite this article:
Raut MS, Hanjoora VM, Govil A, Gupta P. Ipsilateral foot drop after aortobifemoral bypass.Ann Card Anaesth 2019;22:437-438


How to cite this URL:
Raut MS, Hanjoora VM, Govil A, Gupta P. Ipsilateral foot drop after aortobifemoral bypass. Ann Card Anaesth [serial online] 2019 [cited 2020 Aug 11 ];22:437-438
Available from: http://www.annals.in/text.asp?2019/22/4/437/268563


Full Text



 Introduction



Perioperative peripheral nerve injuries (PPNIs) are commonly observed and potentially troublesome complication of anesthesia and surgery. Spectrum of such injuries ranges from transient, clinically minor injury to severe permanent injury. Closed claims analysis from the ASA Closed Claims Project database has revealed that peripheral nerve injuries are frequently alleged basis of litigation claims against anesthetists, comprising 16% of claims.[1] PPNI not only causes potentially significant morbidity for the patient, but also considerable distress to the perioperative physicians. Peripheral nerves can be injured by a direct result of the anesthetic technique of regional anesthesia [2] or it can be contributed/compounded by poor perioperative positioning and padding, tourniquets, and the nature of surgery and diseases affecting the microvasculature of nerves.[3] Prolonged hospital stay has also been observed with peripheral nerve injury. Interestingly, PPNI manifesting 48 h after surgery may raise the doubt about the cause of the injury.[1] We present a case of PPNI which could not be explained by anesthesia technique nor surgery per se.

 Case Report



A 58-year-old male patient presented with pain in bilateral lower limbs. He was diagnosed with severe atherosclerotic stenotic disease of bilateral iliac arteries and abdominal aorta. The patient was scheduled for thoracic aortobifemoral bypass surgery. After smooth anesthesia induction, left-sided double-lumen tube was placed. Left lateral thoracotomy was performed, and conduit graft was anastomosed with descending thoracic aorta after adequate heparinization. Laparoscopic retroperitoneal dissection was carried out to create a tunnel for the conduit placement. The distal ends of conduit were anastomosed with bilateral femoral arteries after doing inguinal dissections. After the procedure, distal arterial flow in both limbs was satisfactory. On postoperative day 2, the patient was unable to dorsiflex his right foot. The patient also complained about pain in gluteal region radiating down the right lower limb. Examination revealed newly appeared hard and tender swelling in right gluteal region. X-ray of the pelvis revealed soft-tissue swelling in the right gluteal area. Aspiration of the swelling showed collected blood and clots. The patient was managed conservatively. Left lateral position and limb physiotherapy was started. After a week, gluteal swelling subsided, and the patient gradually recovered his right foot dorsiflexion. Subsequently, the patient could walk without any difficulty.

 Discussion



It is quite an unusual symptom of new-onset sciatica pain with foot drop after aortobifemoral bypass. The sciatic nerve is formed from the anterior and posterior divisions of the L4, L5, S1, and S2 spinal nerves along with the anterior division of the S3 spinal nerve. The anterior and posterior divisions form the tibial and peroneal divisions of the sciatic nerve, respectively. Course of the two divisions is beneath the piriformis muscle, with the peroneal division lying lateral to the tibial division.[4] Sciatica is most commonly caused by spinal disc herniation followed by extraspinal infrequent causes.[5] Extraspinal entrapment neuropathy is the compression of sciatic nerve by piriformis muscle (piriformis syndrome) and other gluteal muscles.[6],[7] This case is particularly compelling that there was no prior history suggestive of such symptoms nor any surgical procedure/trauma in the gluteal region. Superficial peroneal nerve injury is a common cause of foot drop, particularly after knee arthroplasty surgery. This nerve can get compressed at the fibular head during lithotomy and lateral position, unlikely in the supine position as in the present case.

The clinical examination serves to identify the location of nerve impairment. In case of severe deficit, electrophysiological and imaging studies are preferable. We believe that blood oozing due to retroperitoneal dissection might have followed the path of least resistance to the dependent part of the right gluteal area. This collected blood in the right gluteal region might be causing local compression of sciatic nerve causing foot drop. For perioperative physicians, it is essential to be aware of such an unusual cause of foot drop.

Declaration of patient consent

The authors certify that they have obtained all appropriate patient consent forms. In the form the patient(s) has/have given his/her/their consent for his/her/their images and other clinical information to be reported in the journal. The patients understand that their names and initials will not be published and due efforts will be made to conceal their identity, but anonymity cannot be guaranteed.

Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.

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