DBI STANDARD OPERATING PROCEDURE (SOP)
Procedure Class: Emergency / Damage-Control / Anti-Traumatic
Clinical Domain: Trauma Surgery, Acute Care Surgery, Gastrointestinal Surgery
Frameworks Applied (MANDATORY):
- Decentralized Biological Intelligence (DBI)
- Fault-Tier Surgical Decision Engine (FT-SDE)
- Synergistic Compatibility Framework (SCF)
- PCR Logic (Preventative–Curative–Restorative)
1. PURPOSE & DBI SURGICAL PHILOSOPHY
1.1 Purpose
To control bowel injury in a manner that:
- Arrests contamination without provoking immune catastrophe
- Preserves intestinal perfusion, neural signaling, and microbiome tolerance
- Prevents anastomotic failure under systemic stress
- Avoids fibrotic remodeling and chronic dysmotility
- Enables safe, staged definitive reconstruction
1.2 DBI Core Rule
In trauma, bowel continuity is secondary to biologic survivability.Containment first—reconstruction only when intelligence is ready.
2. INDICATIONS (DBI-QUALIFIED)
AT-BCSD is mandatory when bowel injury occurs in the presence of:
- Fault-Tier 0–1 instability (shock, acidosis, hypothermia)
- Polytrauma with competing surgical priorities
- Significant contamination with physiologic fragility
- Edematous, hypoperfused, or ischemic bowel
- High inflammatory burden or evolving sepsis risk
- Prolonged operative time risk
Relative Contraindication:
Primary anastomosis driven by anatomy alone without FT-SDE clearance.
3. FAULT-TIER DECISION GATE (FT-SDE MANDATORY)
Before bowel management, identify the dominant fault tier:
Fault Tier | Bowel Risk |
Tier 0 – Bioenergetic | Anastomotic
energy failure |
Tier 1 – Perfusion | Ischemia,
leak risk |
Tier 3 – Immune | Cytokine-driven
breakdown |
Tier 2 – Biomechanical | Edema,
tension |
FT-SDE Rule:
If any upstream tier is unstable → Staple-and-Defer is required.
4. DBI-GOVERNED STAPLE-AND-DEFER STRATEGY
4.1 Core Principles
- Containment over continuity
- Speed over perfection
- Temporary control over definitive repair
- Microbiome preservation over sterility illusion
DBI Principle:
An anastomosis performed too early is not definitive—it is deferred failure.
5. PROCEDURE — STEP-BY-STEP
5.1 Pre-Control Preparation
- Rapid FT-SDE assessment
- Identify injured bowel segments
- Control gross contamination with suction and targeted packing
- Avoid unnecessary bowel manipulation
5.2 Bowel Injury Control (Staple-and-Defer)
Permitted Actions
- Stapled resection of injured segments without anastomosis
- Stapled closure of enterotomies when appropriate
- Stapled ends left in discontinuity
- Minimal mesenteric dissection
- Gentle handling to preserve perfusion
Prohibited Actions
- Primary anastomosis during instability
- Hand-sewn repairs under edema or hypoperfusion
- Extensive mobilization
- “Test” anastomoses during shock
Rule:
If bowel looks marginal, preserve and stage—do not challenge it.
5.3 Contamination Control
- Remove gross contamination only
- Avoid exhaustive lavage (see AT-WIBC SOP)
- Pack selectively if needed
- Proceed to temporary abdominal closure if indicated
6. IMMUNE & MICROBIOME PRESERVATION RULES
- Minimize ischemia time
- Avoid excessive irrigation or antiseptics
- Preserve mesenteric blood flow
- Avoid over-suctioning bowel surfaces
Objective:
Prevent post-operative ileus, leak, sepsis, and chronic gut dysfunction.
7. TEMPORARY CONFIGURATION OPTIONS
Depending on context:
- Bowel left in discontinuity
- Temporary diversion (selective, not reflexive)
- Deferred ostomy creation if tolerance is limited
- Planned second-look laparotomy
DBI Rule:
Configuration is temporary; intelligence preservation is permanent.
8. RECONSTRUCTION READINESS (DEFERRED DEFINITIVE REPAIR)
Definitive anastomosis may proceed only when:
Domain | Requirement |
Metabolic | Normothermia,
normalized lactate |
Perfusion | Stable
hemodynamics |
Bowel | Pink,
perfused, non-edematous |
Immune | Controlled
inflammatory markers |
Operative | Ability
to perform tension-free repair |
If any criterion is unmet → continue deferment.
9. COMPLICATION PREVENTION (DBI-SPECIFIC)
Risk | DBI Mitigation |
Anastomotic
leak | Tolerance-gated
repair |
Sepsis | Early
containment |
Ileus | Neural
and immune quieting |
Fibrosis | Minimal
handling |
Chronic
dysfunction | Microbiome
preservation |
10. DOCUMENTATION REQUIREMENTS (MANDATORY)
Chart explicitly:
- Indication for staple-and-defer
- Dominant fault tier
- Segments resected or stapled
- Configuration left in situ
- Planned re-entry criteria
- DBI compliance confirmation
11. SOP SUMMARY (EXECUTIVE)
Anti-Traumatic Bowel Control saves lives by refusing premature reconstruction.Under DBI, containment preserves gut intelligence—so continuity can be restored safely later.