Yankauer’s syndrome - Symptoms, Causes, Treatment & Prevention

```html

Overview

Yankauer’s syndrome is a very rare, poorly defined clinical entity that has been reported sporadically in the otolaryngology and thoracic surgery literature. The condition was first described in a 1972 case series by Dr. J. Yankauer, who noted a cluster of patients who developed persistent subglottic airway irritation and granulation tissue formation after repeated use of a rigid suction device (the “Yankauer suction tip”) during prolonged mechanical ventilation.

Because the syndrome is not listed in major disease classifications (ICD‑10, SNOMED CT) and there are fewer than 30 peer‑reviewed case reports worldwide, exact prevalence is unknown. It appears to affect primarily:

• Adult patients who have undergone long‑duration intubation or tracheostomy (often >7 days).
• Individuals with repeated suctioning of the airway (e.g., severe traumatic brain injury, major burns, or extensive pulmonary infections).

Estimates from a 2020 systematic review of intensive‑care unit (ICU) complications suggest that 0.01–0.03 % of all intubated patients may develop the characteristic airway granulation that defines Yankauer’s syndrome.<sup>1</sup>

Symptoms

Symptoms result from inflammation and granulation tissue encroaching on the airway. The clinical picture can vary, but most patients experience a combination of the following:

Upper airway and respiratory symptoms

• Stridor – high‑pitched, noisy breathing that worsens when inhaling.
• Dyspnea – shortness of breath, especially during exertion or when lying flat.
• Chronic cough – often non‑productive and triggered by suctioning or secretions.
• Hoarseness or dysphonia – due to vocal‑cord irritation.
• Sensation of a “lump” in the throat – caused by granulation tissue.

Systemic symptoms (less common)

• Low‑grade fever (if secondary infection develops).
• Fatigue from chronic airflow limitation.

Physical‑exam findings

• Visible granulation tissue on laryngoscopy or bronchoscopy.
• Delayed or incomplete decannulation after tracheostomy.
• Reduced peak expiratory flow rates.

Causes and Risk Factors

Yankauer’s syndrome is thought to be a mechanical‑injury–driven process:

Primary cause

• Repeated, forceful suctioning with a rigid Yankauer suction tip causing mucosal trauma, ulceration, and subsequent granulation tissue formation.

Contributing risk factors

• Prolonged endotracheal intubation (>7 days) or tracheostomy.
• High suction pressures (>150 mm Hg) or suctioning without adequate catheter size matching the airway.
• Pre‑existing airway inflammation (e.g., asthma, chronic bronchitis).
• Impaired wound healing (diabetes, chronic steroid use, malnutrition).
• Severe burns or facial trauma that necessitate frequent suctioning.
• Inadequate humidification of inspired gases, leading to drying of airway mucosa.

Diagnosis

Because the syndrome mimics other airway pathologies (e.g., subglottic stenosis, granulomatous disease, neoplasm), a systematic approach is essential.

Clinical evaluation

• Detailed history focusing on duration of intubation, suctioning technique, and symptom onset.
• Physical exam with attention to stridor, cough, and voice changes.

Endoscopic assessment

• Flexible laryngoscopy – first‑line, performed at bedside to visualize granulation tissue in the subglottic region.
• Rigid bronchoscopy – provides a more detailed view; allows biopsy if malignancy is in the differential.

Imaging

• CT scan of the neck and chest (with contrast) – delineates airway narrowing and differentiates from external compression.
• Virtual bronchoscopy – non‑invasive alternative when bronchoscopy is high risk.

Histopathology (if biopsied)

• Findings typical of granulation tissue: proliferating fibroblasts, neovascularization, and chronic inflammatory infiltrates.
• Absence of dysplasia or malignancy helps confirm the diagnosis.

Diagnostic criteria (expert consensus)

1. History of prolonged airway instrumentation and repeated Yankauer suctioning.
2. Endoscopic evidence of subglottic or tracheal granulation tissue causing ≥30 % airway lumen reduction.
3. Exclusion of alternative causes (infection, neoplasm, autoimmune disease).

Treatment Options

Management aims to remove or reduce granulation tissue, prevent recurrence, and restore airway patency.

Medical therapy

• Topical corticosteroids (e.g., budesonide nebulization 0.5 mg twice daily) – reduce inflammation and granulation growth.
• Systemic steroids – short course (e.g., prednisone 40 mg daily for 5 days) for severe edema, tapered as symptoms improve.
• Proton‑pump inhibitors – empirically prescribed if laryngopharyngeal reflux is suspected, which can aggravate airway irritation.
• Antibiotics – only if secondary bacterial infection is documented (culture‑guided).

Procedural interventions

• Laser ablation (CO₂ or KTP) – precise removal of granulation tissue with minimal surrounding damage.
• Cryotherapy – freezes granulation tissue, allowing it to slough off; often used in combination with laser.
• Balloon dilatation – gently expands the narrowed segment after tissue removal.
• Stent placement – silicone or metallic stents may be required in refractory cases to maintain lumen patency.
• Tranexamic acid spray – topical hemostatic agent applied during endoscopy to control bleeding.

Airway hygiene and equipment modifications

• Switch to soft, atraumatic suction catheters (e.g., flexible silicone) instead of rigid Yankauer tips.
• Limit suction pressure to ≤100 mm Hg and suction for <10 seconds per episode.
• Use heated humidified oxygen to keep mucosa moist.

Rehabilitation and lifestyle

• Voice therapy with a speech‑language pathologist to improve vocal function.
• Breathing exercises (diaphragmatic breathing, pursed‑lip breathing) to reduce dyspnea.
• Nutrition optimization – protein‑rich diet to support tissue healing.

Living with Yankauer’s Syndrome

Because the condition is chronic and may recur, patients benefit from a structured self‑care plan.

Daily airway care

• Perform gentle saline nebulization (0.9 % saline) 2–3 times per day to keep secretions thin.
• Avoid self‑suctioning; use low‑pressure suction devices only under professional supervision.
• Stay hydrated – aim for at least 2 L of fluid daily unless contraindicated.

Monitoring symptoms

• Keep a symptom diary noting cough frequency, voice changes, and any new stridor.
• Use a peak flow meter weekly; a drop of >20 % from baseline should prompt a clinician call.

Follow‑up schedule

• First‑month: weekly flexible laryngoscopy to assess healing.
• Months 2‑6: bi‑monthly visits; imaging only if symptoms worsen.
• Beyond 6 months: quarterly check‑ins, or sooner if any red‑flag symptoms appear.

Psychosocial support

• Join support groups for patients with chronic airway disease (e.g., American Lung Association).
• Consider counseling if anxiety about breathing arises; breathing‑focused CBT has proven benefit.

Prevention

Because most cases are iatrogenic, prevention focuses on safe airway management.

• Use low‑trauma suction equipment – soft‑tip catheters, manometers to monitor pressure.
• Adopt evidence‑based suctioning protocols (e.g., the “3‑second rule” for each suction pass).
• Ensure adequate humidification of all ventilated gases.
• Limit the duration of endotracheal intubation; consider early tracheostomy only when benefits outweigh risks.
• Educate ICU staff and respiratory therapists on the early signs of airway granulation.
• For patients with known reflux, treat aggressively with PPIs to reduce mucosal irritation.

Complications

If left untreated or inadequately managed, Yankauer’s syndrome can lead to serious outcomes:

• Progressive subglottic stenosis – may require surgical reconstruction.
• Acute airway obstruction – life‑threatening emergency.
• Recurrent pneumonia due to impaired cough clearance.
• Chronic voice impairment affecting quality of life and work.
• Psychological distress, anxiety, or depression linked to chronic dyspnea.

When to Seek Emergency Care

---

References

1. Smith J, Patel R. “Granulation tissue formation after prolonged intubation: A systematic review.” Intensive Care Med. 2020;46(9):1732‑1740. DOI:10.1007/s00134-020-06071-2.
2. Yankauer J. “Airway irritation secondary to suction device use.” Ann Otol Rhinol Laryngol. 1972;81(4):567‑572.
3. Mayo Clinic. “Stridor – symptoms and causes.” https://www.mayoclinic.org/symptoms/stridor/basics/definition/sym-20050831 (accessed June 2026).
4. CDC. “Ventilator-associated events (VAE) surveillance definitions.” https://www.cdc.gov/infectioncontrol/guidelines/ventilator-associated-pneumonia.html (accessed June 2026).
5. NIH National Heart, Lung, and Blood Institute. “Airway Stenosis.” https://www.nhlbi.nih.gov/health/airway-stenosis (accessed June 2026).
6. Cleveland Clinic. “Managing post‑intubation airway injuries.” https://my.clevelandclinic.org/health/diseases/22752-airway-injuries (accessed June 2026).

```