DBI STANDARD OPERATING PROCEDURE (SOP)
Procedure Class: Emergency / Damage-Control Thoracic Surgery
Clinical Domain: Trauma & Acute Care 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 perform a life-saving thoracotomy that:
- Restores cardiopulmonary intelligence
- Arrests upstream bioenergetic collapse
- Prevents immune, autonomic, and epigenomic trauma imprinting
- Enables staged recovery, not survival at the cost of chronic disease
1.2 DBI Core Rule
The thorax is not opened to “fix injuries.”It is opened to re-establish life-sustaining intelligence pathways.
2. INDICATIONS (DBI-QUALIFIED)
AT-DCT may proceed only when Fault-Tier 0–1 collapse threatens immediate death:
- Traumatic cardiac arrest or peri-arrest
- Massive hemothorax with instability
- Cardiac tamponade
- Penetrating thoracic trauma with shock
- Refractory hypotension despite resuscitation
Relative Contraindication:
Attempting definitive thoracic repair during unresolved Tier 0 collapse.
3. PRE-INCISION PHASE (INTELLIGENCE TRIAGE)
3.1 Fault-Tier Rapid Assessment (≤30 seconds)
Fault Tier | Key Signals |
Tier 0 | Loss
of cardiac output, hypoxia |
Tier 1 | Hemorrhage,
tamponade |
Tier 3 | Catecholamine
storm |
Tier 4 | Vagal
shutdown, dysautonomia |
FT-SDE Decision Gate:
If Tier 0 not salvageable → abort non-beneficial thoracotomy
3.2 OR / ED Environment Controls
- Minimal verbal noise
- Clear command hierarchy
- Aggressive warming
- No nonessential personnel
DBI Rationale:
The heart–lung–brain axis is maximally vulnerable.
4. INCISION PHASE (ACCESS WITH MINIMAL NEURAL SHOCK)
4.1 Incision
- Left anterolateral thoracotomy (standard
- Rapid entry through 5th intercostal space
- Avoid excessive rib spreading
DBI Logic:
Access must restore flow, not introduce chaos.
4.2 Immediate Decompression
- Evacuate hemothorax
- Relieve tamponade immediately if present
FT-SDE Priority:
Restore cardiac filling and output before any inspection.
5. DAMAGE-CONTROL INTERVENTION PHASE
5.1 Permitted Life-Saving Actions ONLY
Action | DBI Intent |
Pericardiotomy | Restore
cardiac intelligence |
Cardiac
compression | Temporary
network substitution |
Aortic
cross-clamp | Systemic
energy preservation |
Pulmonary
hilum control | Oxygen-flow
arbitration |
Direct
cardiac wound control | Signal
continuity |
5.2 Prohibited Actions
- Definitive cardiac repair
- Lung resection unless absolutely necessary
- Prolonged dissection
- Cosmetic rib work
DBI Rule:
If it increases time-on-table or metabolic load, it is deferred.
6. IMMUNE, AUTONOMIC & ECM PROTECTION (ANTI-TRAUMATIC)
- Minimize cautery near myocardium
- Avoid excessive lung manipulation
- Limit rib spreading duration
- Maintain temperature and oxygenation
Objective:
Prevent post-thoracotomy inflammatory collapse and autonomic failure.
7. TEMPORARY THORACIC CLOSURE / EXIT STRATEGY
7.1 Exit Criteria
- Return of spontaneous circulation (ROSC)
- Improved perfusion
- Stabilized oxygenation
7.2 Closure Options
Condition | DBI-Aligned Action |
Stable | Rapid
layered closure |
Borderline | Temporary
closure |
Unstable | Pack,
drain, temporary approximation |
Forced closure = DBI violation.
8. POST-PROCEDURE TRANSITION (CONTINUED DBI SURGERY)
8.1 Immediate Objectives
Domain | DBI Goal |
Cardiac | Prevent
ischemia-reperfusion injury |
Pulmonary | Avoid
ventilator-induced trauma |
Immune | Suppress
cytokine overshoot |
Neural | Prevent
autonomic shock |
9. DEFINITIVE THORACIC REPAIR (DEFERRED)
Definitive repair only after:
- Tier 0–1 stabilized
- Inflammatory markers controlled
- Adequate oxygenation without excess support
Often coordinated with staged abdominal or vascular repair.
10. COMPLICATION PREVENTION (DBI-SPECIFIC)
Risk | DBI Mitigation |
Post-thoracotomy
syndrome | Neural-quiet
technique |
ARDS | Lung-protective
handling |
Cardiac
stunning | Controlled
reperfusion |
Chronic
pain | Intercostal
nerve preservation |
Immune
collapse | Anti-traumatic
sequencing |
11. DOCUMENTATION REQUIREMENTS (MANDATORY)
Chart explicitly:
- Dominant Fault-Tier at entry and exit
- Life-saving actions taken
- Actions intentionally deferred
- Closure rationale
- DBI compliance confirmation
12. SOP SUMMARY (EXECUTIVE)
Anti-Traumatic Damage-Control Thoracotomy saves life without destroying cardiopulmonary intelligence.It is rescue, not reconstruction—and its success is measured in recovery, not just survival.