Tracheostomy in burn patients

Overview

Tracheostomy is one of the most frequently performed procedures in critically ill burn patients. The combination of inhalation injury, large TBSA burns requiring repeated operative procedures under general anesthesia, fluid resuscitation-related edema, and prolonged mechanical ventilation makes burn patients a population with among the highest rates of tracheostomy placement in any ICU setting ^[4]. A retrospective cohort study of 830 burn patients found that inhalation injury was significantly associated with tracheostomy requirement ^[5]. However, fiberoptic bronchoscopy (FOB) and tracheostomy in a propensity-matched analysis of 3,014 burn patients were associated with higher rates of pneumonia and mortality, likely reflecting selection bias in which the sickest patients undergo these procedures rather than procedural harm ^[6].

The key clinical questions center on timing (early vs late), technique (percutaneous vs open surgical), and criteria for decannulation.

Indications

Tracheostomy is indicated when prolonged mechanical ventilation is anticipated or when translaryngeal intubation cannot be safely maintained ^[4]. In burn patients, specific indications include:

• Anticipated prolonged mechanical ventilation (more than 10-14 days)
• Inhalation injury requiring ongoing pulmonary toilet and bronchoscopic access
• Failed extubation or inability to protect the airway
• Need for repeated operative procedures requiring general anesthesia
• Facilitation of weaning and early mobilization
• Upper airway obstruction from burn contracture not amenable to intubation

Timing: Early vs Late Tracheostomy

Evidence for Early Tracheostomy

A national, multi-database analysis of 9,173 burn encounters across three databases (Nationwide Inpatient Sample, National Trauma Data Bank, and Burn Care Quality Platform) compared early tracheostomy (10 days or fewer from admission) with late tracheostomy (more than 10 days) using propensity-score matching ^[2]. Early tracheostomy was associated with:

• Shorter hospital length of stay (reduction of 7 to 23 days depending on database)
• Shorter ICU length of stay and fewer ventilator days (NTDB and BCQP)
• Decreased discharge to long-term acute care (NTDB and BCQP)
• No association with ventilator-associated pneumonia rates
• No mortality difference

A service evaluation of 41 severely burned patients found that early tracheostomy (10 days or fewer) was associated with fewer days of mechanical ventilation (16 vs 33, P = 0.001), shorter hospital stay (65 vs 88 days, P = 0.018), earlier first active exercise (day 8 vs day 25, P < 0.0001), and higher functional independence scores at discharge ^[3].

Conflicting Evidence

A single-center retrospective study of 67 burn ICU patients found no substantial benefit from early tracheostomy on overall weaning success or time to decannulation, though early tracheostomy patients reached CPAP mode significantly earlier ^[1]. In-hospital mortality was not significantly different (46.2% vs 33.3%, P = 0.38) ^[1]. The small sample size limits interpretation.

Summary of Timing Evidence

The weight of evidence, particularly the large multi-database analysis, favors early tracheostomy (within 10 days) for reducing length of stay, ventilator days, and ICU stay in burn patients requiring prolonged ventilation ^[2]. However, no study has demonstrated a mortality benefit, and patient selection remains individualized ^[4].

Technique

Open Surgical Tracheostomy

Open surgical tracheostomy has been the traditional approach in burn patients. Advantages include direct visualization of anatomy, ability to perform in patients with anterior neck burns or distorted anatomy, and familiarity among surgical teams. It is typically performed in the operating room, which may be logistically convenient for patients undergoing concurrent burn procedures.

Percutaneous Tracheostomy

Percutaneous dilational tracheostomy is safe and effective in most ICU populations and can be performed at the bedside ^[4]. In burn patients, specific concerns include:

• Anterior neck burns may distort anatomy or create infection risk
• Massive fluid resuscitation may cause tissue edema obscuring landmarks
• Coagulopathy may increase bleeding risk

The choice between open and percutaneous technique should be individualized based on anatomy, burn distribution, and operator experience ^[4].

Complications

Tracheostomy-related complications in burn patients include:

• Early: Hemorrhage, false passage, pneumothorax, subcutaneous emphysema, posterior tracheal wall injury
• Late: Tracheal stenosis, tracheoinnominate fistula, tracheocutaneous fistula, granulation tissue, stomal infection
• Burn-specific: Wound infection in the setting of adjacent burns, difficulty securing the tracheostomy in edematous or burned skin, scar contracture around the stoma

Weaning and Decannulation

Weaning from tracheostomy in burn patients is complicated by ongoing operative needs, nutritional deficits, deconditioning, and the psychological impact of critical illness ^[1][3]. Decannulation criteria typically include:

• Resolution of the original indication (airway protection, ventilatory support)
• Adequate cough and secretion clearance
• Tolerating capping trials for 24-48 hours without distress
• Absence of significant tracheal stenosis or granulation (assessed by bronchoscopy or laryngoscopy)

Early tracheostomy facilitates earlier engagement in active exercise and rehabilitation programs, which may accelerate weaning and functional recovery ^[3].

Controversies and Evidence Gaps

• The optimal definition of "early" tracheostomy in burns varies across studies (7 days, 10 days, 14 days), preventing direct comparison ^[1][2][3].
• No prospective RCT has compared early versus late tracheostomy specifically in burn patients VERIFY.
• The safety and outcomes of percutaneous tracheostomy in patients with anterior neck burns are not well characterized VERIFY.
• Standardized decannulation protocols specific to burn patients are lacking.
• Whether early tracheostomy reduces ventilator-associated pneumonia in burn patients is inconsistent across studies ^[2].

References

[1] Thielmann JM et al. "Weaning outcomes after early vs. late tracheostomy in severe burn injury: a retrospective single-center study." BMC Surg 2026;26(1):82. PMID: 41580671. [2] Shah JK et al. "Early Versus Late Tracheostomy in Critically Injured Burn Survivors: A National, Multi-Database Analysis." J Burn Care Res 2025;46(5):1017-1024. PMID: 40370328. [3] Smailes S et al. "Early tracheostomy and active exercise programmes in adult intensive care patients with severe burns." Burns 2021;48(7):1599-1605. PMID: 34955297. [4] Pelosi P, Severgnini P. "Tracheostomy must be individualized!" Crit Care 2004;8(5):322-4. PMID: 15469591. [5] Witt CE et al. "Inpatient and Postdischarge Outcomes Following Inhalation Injury Among Critically Injured Burn Patients." J Burn Care Res 2021;42(6):1168-1175. PMID: 33560337. [6] Bateman et al. "36th International Symposium on Intensive Care and Emergency Medicine." Crit Care 2016;20:94. PMID: 27885969.