D454 Final Exam Study guide2 with Complete
Detailed Solutions
Guillain Barre Syndrome (GBS)
an acute, immune-mediated, demyelinating polyneuropathy that causes progressive, ascending
paralysis and can lead to respiratory failure. It is often triggered by an infection (e.g.,
Campylobacter jejuni, viral infections, vaccinations) and results in an autoimmune attack on the
myelin sheath of peripheral nerves.
Etiology of GBS
· Guillain-Barré Syndrome (GBS) is an autoimmune disorder that attacks the peripheral nervous
system (PNS).
· Often triggered by a preceding infection (bacterial or viral).
Pathophysiology of GBS
1️. Immune system produces antibodies that mistakenly attack myelin sheath in the PNS.
2.Demyelination slows nerve impulse transmission → progressive muscle weakness.
3️. In severe cases, demyelination affects respiratory muscles, requiring ventilatory support
.4️. Most patients recover, but nerve damage may persist.
Risk Factors of GBS
✔ Recent Infections (most common trigger)
Campylobacter jejuni (GI infection)
Viral infections (e.g., influenza, COVID-19, Epstein-Barr virus, HIV)
Respiratory infections
✔ Vaccinations (rare cases, post-vaccine reaction)
✔ Surgery or trauma
✔ Autoimmune disorders
✔ Male gender✔ Age > 50 years
,Symptoms of GBS
✅ Ascending Paralysis (Classic Symptom)
Begins in legs → progresses upward to arms and face.
Can lead to respiratory failure if it reaches the diaphragm.
✅ Loss of Reflexes (Areflexia)
✅ Paresthesia (Tingling, Numbness in Extremities)
✅ Pain (Deep aching, especially at night)
✅ Difficulty Swallowing (Dysphagia)
✅ Autonomic Dysfunction (BP fluctuations, arrhythmias)
Complications of GBS
❌ Respiratory Failure (Most Serious Complication) → Requires ventilator support.
❌ Aspiration Pneumonia (due to dysphagia).
❌ Autonomic Dysfunction → BP instability, arrhythmias.
❌ Deep Vein Thrombosis (DVT) & Pulmonary Embolism (PE) (due to immobility).
❌ Long-term Weakness or Neuropathy in severe cases.
Diagnostic Tests for GBS
📌 Lumbar Puncture (CSF Analysis) → Elevated protein (> 45 mg/dL) with normal WBC.
📌 Electromyography (EMG) → Slowed nerve conduction velocity.
📌 Nerve Conduction Studies (NCS) → Confirms demyelination.
📌 MRI/CT Scan → Rules out other neurological conditions.
Labs for GBS
✔ CSF Analysis → ↑ Protein, Normal WBC Count
,✔ ABGs → Monitors respiratory status (↓ PaO2, ↑ CO2 if respiratory failure).
✔ Electrolytes → Identifies imbalances contributing to weakness.
✔ CBC → Assesses for infections.
Treatment for GBS
📌 Plasmapheresis (Plasma Exchange) → Removes autoantibodies.
📌 IV Immunoglobulin (IVIG) → Blocks harmful antibodies.
📌 Mechanical Ventilation (if respiratory failure occurs).
📌 Pain Management (Gabapentin, NSAIDs).
📌 Anticoagulation Therapy (Heparin, Enoxaparin) → Prevents DVT/PE.
Nursing Interventions for GBS
✅ Monitor Respiratory Function (ABGs, SpO₂, breath sounds).
✅ Assess Muscle Strength (Monitor for ascending weakness).
✅ Elevate HOB & Suction PRN (Aspiration precautions).
✅ Prevent DVT/PE (TED stockings, Heparin, ROM exercises).
✅ Turn Q2H & Skin Care (Prevent pressure ulcers).
✅ Pain Management (Assess and medicate as needed).
✅ Collaborate with Physical Therapy (Maintain mobility).
Patient Education for GBS
📌 Recovery is slow but possible (may take weeks to months).
📌 Physical Therapy is essential for regaining strength.
, 📌 Report difficulty breathing or swallowing immediately.
📌 Avoid respiratory infections (vaccines, hand hygiene).
📌 Support Groups can help with coping and adaptation.
Key Points for GBS
· GBS is reversible (unlike ALS). Most patients recover within months to years.
· Monitor respiratory function closely! GBS can cause rapid respiratory failure.
· IVIG or plasmapheresis is the treatment of choice, NOT corticosteroids.
Key Features of GBS:
📈 Ascending paralysis → Starts in legs → Moves upward
🦵 Loss of reflexes (areflexia) → Absent deep tendon reflexes (DTRs)
🦵 Respiratory muscle involvement → Risk for respiratory failure
🦵 Autonomic dysfunction → BP instability, tachycardia/bradycardia, urinary retention
⏳ Most cases peak within 2-4 weeks and then slowly improve
Key Signs of Impending Respiratory Failure in GBS:
Weak cough, inability to clear secretions
📉 Shallow, rapid breathing or paradoxical breathing (belly rises instead of chest)
Decreasing oxygen saturation (SpO₂ < 92%)
📉 Vital capacity <15 mL/kg (measured via bedside spirometry)
Priority Nursing Actions for Respiratory Distress in GBS:
1️⃣ Assess respiratory function frequently (RR, SpO₂, ABGs, vital capacity).
2⃣ Prepare for intubation & mechanical ventilation if needed.
3️⃣ Encourage deep breathing and suction secretions as needed.
Detailed Solutions
Guillain Barre Syndrome (GBS)
an acute, immune-mediated, demyelinating polyneuropathy that causes progressive, ascending
paralysis and can lead to respiratory failure. It is often triggered by an infection (e.g.,
Campylobacter jejuni, viral infections, vaccinations) and results in an autoimmune attack on the
myelin sheath of peripheral nerves.
Etiology of GBS
· Guillain-Barré Syndrome (GBS) is an autoimmune disorder that attacks the peripheral nervous
system (PNS).
· Often triggered by a preceding infection (bacterial or viral).
Pathophysiology of GBS
1️. Immune system produces antibodies that mistakenly attack myelin sheath in the PNS.
2.Demyelination slows nerve impulse transmission → progressive muscle weakness.
3️. In severe cases, demyelination affects respiratory muscles, requiring ventilatory support
.4️. Most patients recover, but nerve damage may persist.
Risk Factors of GBS
✔ Recent Infections (most common trigger)
Campylobacter jejuni (GI infection)
Viral infections (e.g., influenza, COVID-19, Epstein-Barr virus, HIV)
Respiratory infections
✔ Vaccinations (rare cases, post-vaccine reaction)
✔ Surgery or trauma
✔ Autoimmune disorders
✔ Male gender✔ Age > 50 years
,Symptoms of GBS
✅ Ascending Paralysis (Classic Symptom)
Begins in legs → progresses upward to arms and face.
Can lead to respiratory failure if it reaches the diaphragm.
✅ Loss of Reflexes (Areflexia)
✅ Paresthesia (Tingling, Numbness in Extremities)
✅ Pain (Deep aching, especially at night)
✅ Difficulty Swallowing (Dysphagia)
✅ Autonomic Dysfunction (BP fluctuations, arrhythmias)
Complications of GBS
❌ Respiratory Failure (Most Serious Complication) → Requires ventilator support.
❌ Aspiration Pneumonia (due to dysphagia).
❌ Autonomic Dysfunction → BP instability, arrhythmias.
❌ Deep Vein Thrombosis (DVT) & Pulmonary Embolism (PE) (due to immobility).
❌ Long-term Weakness or Neuropathy in severe cases.
Diagnostic Tests for GBS
📌 Lumbar Puncture (CSF Analysis) → Elevated protein (> 45 mg/dL) with normal WBC.
📌 Electromyography (EMG) → Slowed nerve conduction velocity.
📌 Nerve Conduction Studies (NCS) → Confirms demyelination.
📌 MRI/CT Scan → Rules out other neurological conditions.
Labs for GBS
✔ CSF Analysis → ↑ Protein, Normal WBC Count
,✔ ABGs → Monitors respiratory status (↓ PaO2, ↑ CO2 if respiratory failure).
✔ Electrolytes → Identifies imbalances contributing to weakness.
✔ CBC → Assesses for infections.
Treatment for GBS
📌 Plasmapheresis (Plasma Exchange) → Removes autoantibodies.
📌 IV Immunoglobulin (IVIG) → Blocks harmful antibodies.
📌 Mechanical Ventilation (if respiratory failure occurs).
📌 Pain Management (Gabapentin, NSAIDs).
📌 Anticoagulation Therapy (Heparin, Enoxaparin) → Prevents DVT/PE.
Nursing Interventions for GBS
✅ Monitor Respiratory Function (ABGs, SpO₂, breath sounds).
✅ Assess Muscle Strength (Monitor for ascending weakness).
✅ Elevate HOB & Suction PRN (Aspiration precautions).
✅ Prevent DVT/PE (TED stockings, Heparin, ROM exercises).
✅ Turn Q2H & Skin Care (Prevent pressure ulcers).
✅ Pain Management (Assess and medicate as needed).
✅ Collaborate with Physical Therapy (Maintain mobility).
Patient Education for GBS
📌 Recovery is slow but possible (may take weeks to months).
📌 Physical Therapy is essential for regaining strength.
, 📌 Report difficulty breathing or swallowing immediately.
📌 Avoid respiratory infections (vaccines, hand hygiene).
📌 Support Groups can help with coping and adaptation.
Key Points for GBS
· GBS is reversible (unlike ALS). Most patients recover within months to years.
· Monitor respiratory function closely! GBS can cause rapid respiratory failure.
· IVIG or plasmapheresis is the treatment of choice, NOT corticosteroids.
Key Features of GBS:
📈 Ascending paralysis → Starts in legs → Moves upward
🦵 Loss of reflexes (areflexia) → Absent deep tendon reflexes (DTRs)
🦵 Respiratory muscle involvement → Risk for respiratory failure
🦵 Autonomic dysfunction → BP instability, tachycardia/bradycardia, urinary retention
⏳ Most cases peak within 2-4 weeks and then slowly improve
Key Signs of Impending Respiratory Failure in GBS:
Weak cough, inability to clear secretions
📉 Shallow, rapid breathing or paradoxical breathing (belly rises instead of chest)
Decreasing oxygen saturation (SpO₂ < 92%)
📉 Vital capacity <15 mL/kg (measured via bedside spirometry)
Priority Nursing Actions for Respiratory Distress in GBS:
1️⃣ Assess respiratory function frequently (RR, SpO₂, ABGs, vital capacity).
2⃣ Prepare for intubation & mechanical ventilation if needed.
3️⃣ Encourage deep breathing and suction secretions as needed.
