Polytrauma, Chest Injury & Abdominal Hemorrhage

ABPN Neurocritical Care Study Guide Exam

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1 Chapter 1: Neurologic Examination & Coma Assessment in the ICU

Current Examination, Blueprint & Preparation Neurologic Examination in Critically Ill Patients Coma Evaluation & Consciousness Alterations Delirium & Toxic-Metabolic Encephalopathy in the ICU

2 Chapter 2: Cerebral Physiology & Intracranial Dynamics

Cerebral Blood Flow, Metabolism & Autoregulation Intracranial Pressure & Compliance Cerebral Edema & Herniation Syndromes

3 Chapter 3: Intracranial Hypertension & Cerebral Perfusion Management

Tiered ICP Management Protocols Hyperosmolar Therapy & Fluid Management Advanced & Refractory ICP Interventions

4 Chapter 4: Airway, Mechanical Ventilation & Pulmonary ICU Management

Emergency Airway Management & Neuro-Intubation Mechanical Ventilation Strategies in Acute Brain Injury Tracheostomy & Ventilator Weaning in Neurocritical Care Pulmonary Complications in the Neuro-ICU Obstructive Lung Disease, Pulmonary Hypertension & Bronchoscopy

5 Chapter 5: Hemodynamics, Shock & Cardiovascular Management

Hemodynamic Monitoring & Blood Pressure Targets Vasoactive Agents: Inotropes, Vasopressors & Antihypertensives Cardiac Complications of Brain Injury

6 Chapter 6: Neuropharmacology, Analgesia & Sedation

ICU Sedation & Analgesia Neuromuscular Blockade & Monitoring Propofol Infusion Syndrome & Drug Toxicities Antiseizure Drug Pharmacology in the ICU

7 Bleeding, Thrombosis & Hematologic Emergencies

Warfarin & Heparin Reversal Direct Oral Anticoagulant (DOAC) Reversal Antiplatelet Management & Platelet Dysfunction Venous Thromboembolism Prophylaxis & Management Transfusion, Coagulopathy, TMA & Cellular-Therapy Neurotoxicity

8 Chapter 8: Systemic ICU Care, Fluids, Electrolytes & Endocrine

Hyponatremia & Osmoregulation: SIADH vs Cerebral Salt Wasting Diabetes Insipidus, Hypernatremia & Endocrine Crises Critical Care Prophylaxis, Nutrition & Infection Prevention

9 Systemic Trauma & Environmental Injury

Polytrauma, Chest Injury & Abdominal Hemorrhage Burns, Electrical Injury & Hanging

10 Cardiac Emergencies & Mechanical Support

IABP, Ventricular Devices & ECMO Acute Coronary, Valvular, Rhythm & Aortic Emergencies

11 Kidney Injury, Acid–Base & Renal Replacement

Acute Kidney Injury & Renal Drug Clearance Acid–Base Disorders, Electrolytes & Renal Replacement

12 Systemic Infection & Endocrine Emergencies

Sepsis, Endocarditis & Antimicrobial Principles Thyroid, Adrenal & Dysglycemic Emergencies

13 Gastrointestinal & Hepatic Emergencies

Acute Abdomen, GI Bleeding & Abdominal Compartment Syndrome Acute Liver Failure, Cirrhosis & Hepatic Drug Effects

14 Chapter 9: Neuroimaging in the Neuro-ICU

Non-Contrast CT & CT Angiography CT Perfusion & Advanced Perfusion Imaging Magnetic Resonance Imaging in Critical Illness

15 Chapter 10: Electrophysiology & Neuromonitoring

Continuous EEG & ACNS Standardized Critical Care Terminology Invasive Neuromonitoring: ICP & External Ventricular Drains Multimodal Monitoring: PbtO2, Microdialysis & Transcranial Doppler

16 Angiography, Electrodiagnosis & CSF Analysis

Conventional Angiography & Cranial–Spinal Shunts EMG, Nerve Conduction & Acute Muscle Disease CSF Analysis: Infection, Inflammation & Hemorrhage

17 Chapter 11: Bedside Procedures, Ultrasound & Death by Neurologic Criteria

Critical Care Procedural Skills Critical Care Ultrasound & Echocardiography Determination of Death by Neurologic Criteria

18 Chapter 12: Acute Ischemic Stroke & Reperfusion Therapies

Acute Ischemic Stroke Management & Thrombolysis Endovascular Thrombectomy & Large Vessel Occlusion Malignant Hemispheric & Cerebellar Infarction

19 Chapter 13: Spontaneous Intracerebral Hemorrhage & Intraventricular Hemorrhage

Acute Intraparenchymal Hemorrhage Management Intraventricular Hemorrhage & Hydrocephalus Surgical Evacuation & Minimally Invasive Surgery in ICH

20 Chapter 14: Aneurysmal Subarachnoid Hemorrhage & Delayed Cerebral Ischemia

Aneurysmal Subarachnoid Hemorrhage: Acute Resuscitation & Securing Delayed Cerebral Ischemia & Cerebral Vasospasm Non-Aneurysmal Subarachnoid Hemorrhage & Vascular Malformations

21 Venous, Spinal & Traumatic Vascular Disease

Cerebral Venous Thrombosis & Spinal Cord Infarction Traumatic Dissection, Carotid–Cavernous Fistula & Penetrating Injury

22 Chapter 15: Traumatic Brain & Spinal Cord Injury

Severe Traumatic Brain Injury & Contusions Acute Traumatic Spinal Cord Injury & Neurogenic Shock Spine Trauma, Fractures & Cord Syndromes

23 Chapter 16: Status Epilepticus, Seizures & Neuromuscular Emergencies

Status Epilepticus: Convulsive & Non-Convulsive Refractory & Super-Refractory Status Epilepticus Acute Neuromuscular Respiratory Failure

24 Chapter 17: Post-Cardiac Arrest Care, CNS Infections & Encephalitis

Targeted Temperature Management & Post-Cardiac Arrest Care Post-Cardiac Arrest Neuroprognostication Acute CNS Infections, Encephalitis & Inflammatory Emergencies

25 Neuroinflammation & Neurooncology

Fulminant Demyelination & Autoimmune Encephalitis Brain, Spinal & Leptomeningeal Cancer Emergencies

26 Pregnancy, Transplantation & Pediatric Care

Pregnancy, Postpartum & Post-Transplant Neurologic Care Pediatric Neurocritical Care

27 Chapter 18: Neurosurgical & Perioperative Emergencies

Postoperative Neurosurgical Complications Device Complications: EVDs, Shunts & ICP Monitors Cerebral Hyperperfusion Syndrome & Post-Interventional Emergencies

28 Chapter 19: Ethics, Palliative Care & Organ Donation in the Neuro-ICU

Communication, Surrogate Decision-Making & Conflict Resolution Neuroprognostication Ethics, Withdrawal of Life Support & Palliative Care Organ Donation & Management of the Deceased Donor

Polytrauma, Chest Injury & Abdominal Hemorrhage

Key Takeaways Explain This Topic AI

In polytrauma, identify and control hemorrhage while protecting oxygenation, spinal stability, and cerebral perfusion.

Tension pneumothorax is a clinical emergency; treatment should not wait for confirmatory imaging in an unstable patient.

A negative FAST examination does not exclude retroperitoneal bleeding, hollow-viscus injury, or early hemoperitoneum.

Fat embolism syndrome can cause delayed hypoxemia and neurologic deterioration after long-bone or pelvic injury.

Last updated: October 2026

Why Systemic Trauma Belongs in Neurocritical Care

The official outline includes emergency polytrauma evaluation, chest and abdominal injury, and long-bone fractures. Secondary brain injury can result from minutes of hypoxemia or inadequate perfusion even when the head CT is unchanged. In a patient with TBI and hypotension, search for extracranial blood loss, tension pneumothorax, tamponade, cardiac dysfunction, and drug effects. Isolated intracranial hemorrhage in an adult rarely explains major hemorrhagic shock; a scalp wound can bleed substantially, and associated injuries are easily missed in an unconscious patient.

Use a trauma-team primary survey with simultaneous interventions. Control external catastrophic bleeding, protect the airway with cervical precautions, assess ventilation, restore circulation, document pupils and motor responses, and expose the patient while preventing heat loss. Reassess after each procedure and during every transfer. A satisfactory initial survey is not evidence that subsequent hypotension must be neurogenic.

Chest Emergencies and Their Hemodynamic Patterns

Injury Important clues Immediate reasoning

Tension pneumothorax Deterioration after positive-pressure ventilation, unilateral reduced breath sounds, obstructive shock Decompress promptly using the trauma service's emergency technique, then provide definitive drainage

Massive hemothorax Shock with unilateral pleural fluid or opacity Drainage, blood resuscitation, and urgent surgical assessment

Tamponade Pericardial fluid with impaired filling, shock, sometimes distended neck veins Obtain immediate trauma/cardiac intervention; absence of classic examination signs does not exclude it

Pulmonary contusion Worsening oxygenation after blunt injury Support gas exchange and use lung-protective ventilation while treating other injuries

Blunt aortic injury High-energy deceleration, suspicious CT findings Coordinate urgent vascular evaluation while balancing impulse control against brain perfusion

Bedside ultrasound accelerates recognition but has limitations. Absent lung sliding may also occur with apnea, pleural adhesions, or mainstem intubation. Pericardial fluid alone does not establish tamponade physiology. If a patient collapses immediately after intubation, assess tube position, ventilation pressures, venous return, and tension pneumothorax before escalating sedatives for presumed neurologic agitation.

Positive-pressure ventilation reduces venous return; induction drugs can remove compensatory sympathetic tone. Arrange blood products and vasopressor support before induction when possible, without delaying a life-saving airway. Vasopressors can support perfusion during resuscitation but do not replace hemorrhage control or adequate circulating volume.

Abdominal and Pelvic Injury

Focused assessment with sonography for trauma (FAST) looks for fluid in pericardial and dependent abdominal spaces. It does not adequately exclude retroperitoneal hemorrhage, bowel perforation, mesenteric injury, or early bleeding. In a hemodynamically stable patient, contrast CT can define solid-organ injury and guide nonoperative care, embolization, or surgery. An unstable patient with convincing intraperitoneal bleeding requires a surgical pathway rather than a prolonged diagnostic trip.

A pelvic fracture may hide substantial blood loss. Correctly positioned pelvic stabilization, massive transfusion, angiographic embolization, or operative hemorrhage control may be required. Do not repeatedly manipulate an unstable pelvis. Persistent shock despite a seemingly modest visible injury should prompt reassessment of the chest, abdomen, pelvis, long bones, and external surfaces.

The inability to report pain makes serial objective assessment especially important in sedated patients. Follow abdominal distension, urine output, lactate trends, ventilation pressures, transfusion needs, and imaging. A falling hemoglobin is not required before recognizing acute blood loss because early concentrations can remain near baseline. Conversely, dilution after fluid administration does not by itself prove ongoing bleeding.

Resuscitation Conflicts in TBI

Permissive hypotension used in some hemorrhage-control strategies is inappropriate when it sacrifices perfusion of an injured brain. Coordinate source control with sufficient pressure support, oxygen delivery, temperature preservation, calcium monitoring during major transfusion, and correction of traumatic coagulopathy. Use institution-specific balanced blood-product or whole-blood protocols rather than treating large crystalloid volumes as equivalent blood replacement. Avoid albumin resuscitation in severe TBI. Choose fluid tonicity and resuscitation endpoints with the neurotrauma team; do not withhold necessary resuscitation because of a theoretical concern about edema.

Trauma-induced coagulopathy combines tissue injury, hypoperfusion, consumption, fibrinolytic changes, dilution, hypothermia, and acidosis. Platelet counts and conventional coagulation tests provide partial information; viscoelastic testing can support targeted treatment when available. Neither a normal initial INR nor a single reassuring CT eliminates the need for repeat assessment.

Long-Bone Fracture and Fat Embolism

After femoral, other long-bone, or pelvic injury, fat embolism syndrome can develop with hypoxemia, altered consciousness, and sometimes a petechial rash. The full triad is not always present. Neurologic deterioration may be disproportionate to head CT findings; MRI can show a scattered diffusion-restriction pattern. Distinguish this from thrombotic PE, diffuse axonal injury, seizures, infection, and sedative accumulation. Treatment is predominantly supportive with oxygenation, hemodynamic support, and coordinated fracture management. Therapeutic heparin is not a specific treatment for fat embolism syndrome.

In a typical vignette, a patient with a femoral fracture becomes hypoxemic and confused the following day. The useful decision is to reassess systemic physiology and consider fat embolism, rather than reflexively escalating ICP treatment without evidence of intracranial hypertension.

Sources checked October 17, 2026: ACS trauma best-practice guidelines and ACS TBI guidance .