Duration of Grillo (Mento-Sternal) Stitch After Primary Tracheal Anastomosis
The Grillo stitch should be left in place for 7-10 days after primary tracheal anastomosis, though recent evidence suggests that retention sutures alone may eliminate the need for this stitch entirely while improving patient comfort and reducing complications.
Standard Duration and Rationale
The traditional approach involves maintaining neck flexion for approximately one week (7-10 days) to minimize tension on the anastomosis during the critical healing period. This timeframe allows initial healing of the anastomotic site while the tracheal segments fuse together under reduced tension.
Alternative Approaches: Moving Away from Grillo Sutures
Recent surgical experience challenges the necessity of the Grillo stitch entirely:
Retention sutures alone may be sufficient: A 2025 Turkish study of 44 tracheal resection patients demonstrated that retention sutures eliminated the need for jaw-neck (Grillo) sutures, resulting in increased patient comfort and decreased anastomosis-related complications 1.
Non-invasive alternatives exist: For pediatric cases, cervical collars (Aspen collar) or cervical-thoracic orthoses (Johnson CTO) have been successfully used as alternatives to the Grillo suture, though these require modifications to maintain proper flexion 2.
Key Considerations for Duration
If using a Grillo stitch, the 7-10 day period is critical because:
- Anastomotic healing is most vulnerable during the first week
- Excessive neck extension during this period increases risk of dehiscence
- One major anastomotic dehiscence requiring reoperation was documented with Grillo suture technique 2
- Skin breakdown at the suture site occurred in 2 patients in the pediatric series 2
Complications to Monitor
During the stitch period, watch for:
- Skin breakdown at suture sites (common complication)
- Signs of anastomotic insufficiency (associated with prolonged ventilation >24 hours) 3
- Patient discomfort and inability to perform oral hygiene
- Wound infections (more common with prolonged ventilation) 3
Clinical Algorithm for Decision-Making
Consider omitting the Grillo stitch if:
- Adequate retention sutures are placed
- Anastomosis is under minimal tension
- Patient can maintain neck flexion voluntarily or with external orthosis
Maintain the Grillo stitch for full 7-10 days if:
- Anastomosis is under significant tension
- Extensive resection was performed (>3 cm) 1
- Suprahyoid laryngeal release was required 4
- Patient is unable to cooperate with positioning
Remove earlier than 7 days only if:
- Severe skin breakdown occurs
- The stitch becomes a greater risk than benefit
Important Caveats
The evidence base for exact timing is limited, with most recommendations based on surgical tradition rather than controlled trials. The 2025 data suggesting retention sutures alone may suffice represents a paradigm shift, but requires validation in larger cohorts 1. Patient factors including diabetes, steroid use, and comorbidities may necessitate longer immobilization periods given their association with delayed healing 3, 5.