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Clin Exp Emerg Med > Volume 5(3); 2018 > Article
ceem-17-243.xml Reid, Fogg, and Healy: Deformation of a humeral intraosseous catheter due to positioning for thoracostomy
An adult victim of a motor vehicle collision was treated by a helicopter emergency medical service team. Major head and thoracic injuries were managed by on scene rapid sequence intubation and open thoracostomy. A 45-mm 15-gauge humeral intraosseous needle (EZ-IO; Vidacare Corporation, Shavano Park, TX, USA) was used for vascular access prior to other procedural interventions. The intraosseous catheter was removed in the emergency department using the standard manufacturer recommended technique by trauma team staff following establishment of further definitive venous access. There were no difficulties in removing it and it appeared to have been functioning effectively.
Following removal the intraosseous catheter was noted to be deformed (Fig. 1). A chest radiograph taken prior to removal showed the correct insertion point in the proximal humerus with no evidence of local bony injury, but with a bend in the catheter located at the insertion site.
Intraosseous access is increasingly utilized as the initial and sometimes sole source of resuscitative vascular access. The proximal humerus is preferred by some providers over the proximal tibia site as flow rates are favourable [1] and there is unimpeded access to the device in a patient restrained in an ambulance or helicopter. One disadvantage of humeral access is the risk of dislodgement of the catheter on elevating or abducting the arm, which has been described both during patient transfer and positioning for computed tomography scanning [2]. Abutment of the needle against the acromion is one proposed mechanism for this [3].
In order to access the lateral chest for thoracostomy our clinicians usually abduct and externally rotate the humerus, and we have previously observed that this can cause dislodgement of proximal humeral intraosseous catheters [4]. This is our first recorded case of a deformed catheter, which is very likely a result of arm positioning for thoracostomy. Clinicians should be aware of the risk of both dislodgement and deformation of proximal humeral intraosseous catheters during abduction and external rotation of the humerus.


No potential conflict of interest relevant to this article was reported.


1. Pasley J, Miller CH, DuBose JJ, et al. Intraosseous infusion rates under high pressure: a cadaveric comparison of anatomic sites. J Trauma Acute Care Surg 2015; 78:295-9.
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2. Paxton JH, Knuth TE, Klausner HA. Proximal humerus intraosseous infusion: a preferred emergency venous access. J Trauma 2009; 67:606-11.
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3. Knuth TE, Paxton JH, Myers D. Intraosseous injection of iodinated computed tomography contrast agent in an adult blunt trauma patient. Ann Emerg Med 2011; 57:382-6.
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4. Reid C, Healy G, Burns B, Habig K. Potential complication of the cruciform trauma position. Emerg Med Australas 2017; 29:477-8.

Fig. 1.
Deformed intraosseous needle removed from the proximal humerus.
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