Real-Time Ultrasound Guided the New Standard Technique for Percutaneous Dilatational Tracheostomy (PDT)

AUTHORS

Mohsen Ziyaeifard 1 , Ziya Totonchi 1 , *

1 Rajaie Cardiovascular, Medical and Research Center, Iran University of Medical Sciences , Tehran, Iran

How to Cite: Ziyaeifard M, Totonchi Z. Real-Time Ultrasound Guided the New Standard Technique for Percutaneous Dilatational Tracheostomy (PDT), Anesth Pain Med. 2015 ; 5(3):e24653. doi: 10.5812/aapm.24653v2.

ARTICLE INFORMATION

Anesthesiology and Pain Medicine: 5 (3); e24653
Published Online: June 22, 2015
Article Type: Editorial
Received: October 18, 2014
Revised: November 4, 2014
Accepted: November 22, 2014
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Keywords

Ultrasound Percutaneous Dilatational Tracheostomy

Copyright © 2015, Iranian Society of Regional Anesthesia and Pain Medicine (ISRAPM). This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.

Several studies demonstrated that percutaneous dilatational tracheostomy (PDT) is a safe, easy, low-cost and minimally-invasive bedside method with numerous known advantages more than surgical tracheostomy such as fewer adjacent tissue injury, lesser bleeding risk, wound infectivity (morbidity) and mortality (1, 2). PDT technique is usually done with the help of fiberscope guide for more security and accurateness of the practice.

Blind PDT technique has several disadvantages including failure to recognize accurate point of opening and position of tracheostomy pipe, chance of damage to nearby structures and false passageway. PDT with bronchoscopic guide can lessen these hesitations (3). However, it has its own difficulties such as disorder of ventilation - particularly in patients with elevated of Positive End-Expiratory Pressure (PEEP) - and considerable hypercarbia through risk of increased intracranial pressure. Therefore, patients with spinal cord or head damage may weakly tolerate this method (2, 3).

Recently, portable ultrasonography is used in these cases for pre-intubation evaluation of upper airway, post-intubation confirmation of endo-tracheal tube position, and extubation tracheal tube result (4). However, there is limited information and observational study data that supports the efficacy and safety of ultrasonography guided of PDT (5, 6).

Ultrasonography has numerous advantages. It is individually portable, reliable, safe, pain-free, low-cost and simply available (7). Portable and real-time ultrasound has further advantage for facilitating the clinicians toward identifying the needle passageway by presentation dislocation of tissues in front of the needle (6, 8) (Figure 1). Sharp groove in anterior tracheal wall with incursion of needle and following flattening might be more visible by this procedure (5).

Figure 1. View of the Position of the Probe and Corresponding Ultrasound scan in a Longitudinal Axis With the Probe placed in Neck anterior
View of the Position of the Probe and Corresponding Ultrasound scan in a Longitudinal Axis With the Probe placed in Neck anterior

This figure shows Thyroid cartilage (1), Cricoid cartilage (2), second tracheal cartilage ring (3), and the echogenic line is consistent with an air-tissue interface at the anterior tracheal wall. The cartilages are echolucent. Location of needle insertion is between first and second cartilage ring.

Real- time ultrasound guided PDT preserves as a safe and cost-effective bedside method for superior use in critical ill patients, particularly in patients with morbid obesity and spinal damage (6, 7).

Michigan researchers have shown that this technique can reduce the rate of major complications. Some studies showed that the complications are 10 times less in patients who received ultrasonography guided PDT comparing with patients that had conventional procedure approach (Box 1) (9, 10).

Box 1. Complications Associated to Conventional Procedure or Non-use of Ultrasound in PDT
Hemorrhage
Failure of airway in procedure
Early dislodgement
Infectivity
Pneumomediastinum
Pneumothorax
Failure to complete procedure
Switch to surgical tracheostomy /require for change of tracheostomy
Posterior wall damage
Tracheomalacia, tracheal stenosis
Tracheo-cutaneous, tracheo-innominate, and tracheo-esophageal fistula

Nasir Bhatti, MD (director of adult Tracheostomy and Airway Service in the Hospital affiliated to Johns Hopkins University, Baltimore, USA) supported the use of ultrasound guided PDT by non-surgeons; including pulmonologists and intensivists performing arts of PDTs (10).

Ultrasound guided PDT facilitate clinicians to preserve adjacent structures r; demonstrate the guide wire location and the correct level of cannula. It also enables clinicians to assess the space between the anterior tracheal wall and the skin, to evaluate extends length of tube, and suitably put the endo-tracheal tube in the correct position. However, randomized clinical trials are required to evaluate ultrasound guided PDT as if can be a standard technique, similar to the previous method which is used in central venous catheter placement (10-12).

Acknowledgements

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