Introduction

There are different techniques for creating a secure airway. Among these are the more or less noninvasive oral and nasal endotracheal intubations, whereas cricothyrotomy, conventional open tracheostomy (COT), and percutaneous cricothyrotomy and tracheotomy (PCT) provide a more aggressive means to this purpose. Indications for tracheotomy in maxillofacial trauma patients include all situations with obstruction or impending obstruction of the upper airway (Table 1) [19]. In the presence of severe maxillofacial trauma with gross displacement of bones and extensive soft tissue lacerations, a safe and definitive airway is crucial because this condition poses a significant threat to airway patency, and deterioration of the airway may occur rapidly. That securing the airway is not always straightforward is described and illustrated in the following case.

Table 1 Indications for tracheotomy in maxillofacial trauma patients
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Case report

A 23-year-old elevator technician was transferred to the emergency ward after sustaining severe maxillofacial trauma when the elevator he was repairing accidentally went up, thereby squeezing his face between the top of the elevator and the roof of the elevator shaft.

Upon presentation, we saw a fully alert, cooperative patient, in a characteristic prone position with his neck somewhat anteflexed to maintain a patent airway. Endotracheal intubation at the scene was not attempted because of severe mutilation of the oral cavity (Fig. 1). Initially, no signs of respiratory distress were observed. Oxygen saturation was adequate and there were no signs of hemodynamic instability.

Fig. 1
figure 1

Clinical aspect at presentation at the emergency ward

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Clinical investigation revealed multiple extensive soft tissue injuries: in the occipital region, subnasally extending from cheek to cheek and through the tongue, which was almost completely avulsed. There was profound arterial bleeding from the lacerations and oral cavity. There was gross displacement of the right globe with telecanthus and abnormal mobility of the entire viscerocranium. There were no obvious signs of injury to the neurocranium.

Because of a significant risk of loss of airway patency, the risk of vomiting with subsequent aspiration, and the need for further radiological evaluation and surgical therapy, a secure airway was necessary. Extreme difficulties were to be expected with facemask ventilation, laryngoscopy, and endotracheal intubation. Therefore, an invasive airway access was chosen. At that moment, the patient was still able to maintain a patent airway without signs of respiratory distress. It was decided to perform a percutaneous wire-guided dilation cricothyrotomy (Melker Emergency Cricothyrotomy; Cook Critical Care, Bloomington, IN, USA) in local anesthesia with the patient still in a prone position, to be followed by a surgical tracheotomy. After the application of local anesthesia; needle puncture; placement of the guide wire; dilatation; and, eventually, placement of the tube, the patient went into an acute respiratory failure. Physical diagnostic examination revealed that the tube was not inside the trachea as no return of carbon dioxide could be monitored and no pulmonary ventilation could be auscultated. An emergency surgical tracheotomy was then performed. This procedure was uneventful and a cuffed trachea cannula was inserted. The patient was then sedated. Computed tomography of the thorax revealed air in the anterior upper mediastinum that was most likely due to false passage of the cricothyrotomy tube (Fig. 2). Fortunately, this potentially life-threatening event was without serious consequences as no signs of neurological deficits or infection of the mediastinum became present. Computerized tomography scanning of the head and neck revealed extensive midfacial and mandibular fractures (Fig. 3). The patient was operated upon and transferred to the intensive care unit where he stayed for 4 days before returning to the ward. The patient was decanulated successfully on the 16th postoperative day.

Fig. 2
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Computerized tomography scan of the thorax with signs of mediastinal emphysema

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Fig. 3
figure 3

Three-dimensional reconstruction of the maxillofacial skeleton showing gross destruction and displacement of the osseous structures

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Discussion

Shortly after Seldinger (1953) described his technique of percutaneous guide wire needle placement in arteriography, the technique of percutaneous tracheotomy emerged [17]. Shelden et al. introduced a tracheotomy technique that consisted of a slotted needle guiding a trocar into the trachea [18]. Over the years, several modifications of the percutaneous technique evolved, and nowadays, there are numerous convenient PCT kits on the market based on different methods, utilizing different dilatators, guide wires, and points of entry into the trachea [2, 12, 16, 20].

PCT has been popularized as a safe and effective alternative to the conventional open tracheotomy technique. It is widely used in the intensive care unit setting, where it is now outnumbering the performance of COT [8]. In our institution, extensive experience has been gained with both the Ciaglia Blue Rhino tracheotomy and the guide wire dilating forceps technique, showing a low major complication rate [6, 7, 9]. Various authors compare the open and percutaneous methods in terms of complication rates, cost-effectiveness, and safety. The potential for serious complications following PCT due to incorrect needle placement or posterior tracheal wall injury decreases with endoscopic guidance.

Comparison of elective COT with PCT

In a meta-analysis, Dulguerov et al. compared the peri- and postoperative complications of PCT and COT and concluded that the percutaneous variant is associated with more peroperative complications, especially concerning cardiorespiratory arrests and peroperative deaths. In addition, false passage of the tube was more frequent with PCT [5]. A double-blind randomized trial by the same authors led to the conclusion that both methods are associated with a low rate of serious and intermediate complications but that there were more minor peroperative complications with PCT and more minor long-term complications with COT [13]. In a prospective randomized trial, Massick et al. found no differences in peroperative complication rates between PCT and COT, but a significantly higher postoperative complication rate with PCT was found [14]. Goldenberg et al. found similar and low complication rates for COT and PCT [11]. In a review paper, McWhorter concludes that COT can be performed with equal or better outcome than PCT [15].

The differences between these studies can be attributed to study design, definitions, sample size, variance in patient population, and application of different surgical and percutaneous techniques. In these studies, PCT and COT were mainly performed as elective procedures in already intubated patients. Overall, it can be stated that both COT and PCT can be performed with low and acceptable complication rates when performed electively, assuming that experienced operators perform these procedures.

PCT in an emergency situation

In an emergency situation where rapid airway access is needed because of acute or impending airway obstruction and where nasal or oral endotracheal intubation is not possible or fails, a cricothyrotomy provides the most rapid means for securing the airway (although this is not regarded as a definitive airway). The use of PCT in an emergency situation is less clear and it has been stated that there is no role for such techniques in these situations [2, 15]. The literature regarding this topic is sparse, although some reports assess this topic [1, 3, 4].

Ben-nun et al. describe 10 patients with multiple blunt head and neck injuries or severe head and neck burns in which airway control was necessary. PCT was applied after oral endotracheal intubation failed. All patients were in the supine position, and on average, it took 5.5 min to perform this procedure. Experienced surgeons performed all procedures. No conversion to an open tracheotomy was necessary [1]. A case series by Clarke et al. describes PCT in four patients. Indications were inability to intubate, epiglottitis, Ludwig’s angina, and swelling of the tongue. Two of these patients were in a semiprone position, and in all four cases, PCT was performed rapidly and safely [3]. The performing surgeon had an experience of over 200 elective PDT. In another two cases with airway obstruction and respiratory failure PCT, was performed successfully and fast [4]. Fikkers et al. compare the wire-guided Minitrach II to the catheter over needle cricothyrotomy (Quicktrach) in a pig model. A cricothyrotomy with the Quicktrach could be performed faster (48 vs 150 s), easier, with a higher success rate, and with fewer complications than the wire-guided technique [10].

No clinical randomized trials are known that compare PCT with COT in a situation where urgent airway control is necessary. In the case descriptions that are available, almost all patients were in a supine position. A limited ability to extend the cervical spine is considered a contraindication for PCT [11]. Utilizing the wire-guided percutaneous technique in the patient described most probably led to a false route of the tube and loss of airway patency. In addition, computed tomography revealed air in the upper mediastinum, which theoretically increases the probability of mediastinitis. The prone position of this patient, as well as the experience of the performing surgeon, may have contributed to this complication.

Conclusion

PCT has proven its merits in an elective nonemergency situation in the supine patient. No large series are known referring to the safety and feasibility of PCT in an emergency situation. There are, nonetheless, several reports that discuss the potential of this technique in such a situation, again in patients in the supine position and always performed by surgeons with a large experience in PCT. Limited ability to extend the cervical spine is considered a contraindication for PCT. In the patient described, the attempt to perform a percutaneous wire-guided dilation cricothyrotomy in a sitting position in all probability led to acute deterioration of airway patency and mediastinal emphysema. It is therefore concluded that percutaneous cricothyrotomy or tracheotomy in prone patients with severe maxillofacial trauma is not an appropriate first-choice method and that either a catheter over needle cricothyrotomy or open surgical tracheotomy under local anesthesia should be performed when the situation necessitates acute airway control.