Comprehensive Intraoperative Protocols for Midline Vertical Laparotomy Closure

Internal Organ Alignment: The closure process begins only after the abdominal viscera and the greater omentum have been anatomically returned to their proper positions within the cavity.
Drainage Assessment: A critical evaluation of the wound site is performed to determine if a drainage device is necessary. If required, the drain must be positioned prior to the commencement of any suturing.
Pharmacological Facilitation: The administration of muscle-relaxing agents is utilized to ensure the abdominal wall is sufficiently relaxed, allowing for a tension-free closure of the mass.
Protection of Underlying Structures: To shield the bowel and other abdominal organs from accidental needle injury or entrapment, a metal ribbon retractor or a Glassman visceral retainer (commonly referred to as a "fish") is inserted beneath the posterior fascia.

Lifting the Fascial Edges: Surgical access is gained by elevating the fascia at the superior pole of the wound using heavy toothed forceps or Kocher clamps. Hand-held retractors may be employed to ensure optimal visibility of the tissue layers.
Primary Suture Anchor: The initial full-thickness suture pass is made at the apex of the incision, specifically starting a few millimeters superior to the actual opening. The needle should enter and exit approximately $1\,\text{cm}$ from the opposing edges of the wound.

Knotting Requirements: The number of throws required for the knot depends on the suture type. For instance, when utilizing $\#1$ polydioxanone, a sequence of $5\text{--}6$ square knot throws is standard to ensure security.
Double-Loop Strand Advantages: Utilizing a double-loop strand is considered an ideal alternative for continuous closure. This method eliminates the need for an initial anchoring knot, which simultaneously increases the breaking strength of the suture and minimizes the volume of foreign material remaining in the body.
Tension Regulation: Precise tension is vital when suturing the fascia. The goal is to achieve tissue apposition without causing ischemia (restriction of blood flow), which occurs if the suture is pulled too tightly.

Suture Pattern: The closure proceeds along the length of the midline incision using a running (continuous) technique.
Bite Specifications: Small tissue bites are taken at intervals no greater than $1\,\text{cm}$ apart.
Assistant Responsibilities: The surgical assistant is tasked with following the suture line and maintaining consistent tension on the trailing end of the suture strand to prevent loosening.
Dynamic Exposure: Hand-held retractors and surgical clamps should be repositioned throughout the procedure to maintain a clear view of the wound margins.
Manual Verification: The surgeon should periodically palpate the underside of the closure to confirm there are no fascial gaps and that no internal organs have been inadvertently captured by the suture.
Correcting Discontinuities: If significant gaps appear in the fascial alignment, they can be individually addressed using an interrupted figure-of-eight stitch.
Retractor Removal: The protection device (ribbon retractor or Glassman retainer) must be carefully extracted before the final segments of the suture line are closed.
Distal Anchoring: The final knot at the distal end of the incision must be seated securely and tied firmly to prevent any disruption of the entire suture line.

Irrigation: After the mass closure of the fascia is finalized, the subcutaneous tissue layers are irrigated to remove debris and reduce infection risk.
Skin Apposition: The skin is closed based on the surgeon's preference. The use of surgical staples is highlighted for providing a good cosmetic result while exhibiting minimal reactivity in the tissue.
Dressing Application: A standard three-layer dressing is applied to the site.
Management of Dead Space: In cases where the surgeon is concerned about the post-operative development of dead space, a pressure dressing is the preferred choice to compress the layers effectively.