NORCET Conquest V3.0
Phase 2: Image-Based Questions (IBQ)
Visual Recognition & Clinical Correlation
6-8 hours
Module Overview
This module covers visual recognition skills essential for NORCET - ECG patterns, radiology findings, and equipment color coding. Memorize patterns and their immediate interventions.
1ECG Recognition
Instruction: Memorize these visual patterns and their immediate interventions.
| ECG Pattern | Diagnosis | Treatment |
|---|---|---|
| Saw-Tooth Pattern | Atrial Flutter | Diltiazem, Cardioversion |
| Chaotic, Irregular Line (No P, QRS, T waves) | Ventricular Fibrillation (VFib) | DEFIBRILLATE immediately (Unsynchronized Shock) |
| Widened QRS, No P waves | Ventricular Tachycardia (VTach) | With pulse: Amiodarone Without pulse: Defibrillate |
| Prolonged PR Interval (>0.20 sec) | First Degree AV Block | Monitor, usually benign |
| Absent P waves, Irregular R-R | Atrial Fibrillation (AFib) | Rate control: Beta-blockers Anticoagulation |
Exam Tip
VFib = Defibrillate (Unsynchronized). VTach with pulse = Cardiovert (Synchronized)
2Radiology & Clinical Signs
| Finding | Diagnosis | Action |
|---|---|---|
| Air Under Diaphragm (Crescent Shape on CXR) | Pneumoperitoneum (Perforated Viscus) | Emergency Surgery Prep (NPO, IV Fluids, Antibiotics) |
| Bat Wing Pattern (on CXR) | Pulmonary Edema | Diuretics, O₂, Position upright |
| Ground Glass Opacity | ARDS / COVID-19 | Mechanical ventilation support |
| Coin Lesion (Solitary pulmonary nodule) | Rule out Malignancy | CT scan, Biopsy if indicated |
3IV Cannula Color Coding
High-frequency IBQ topic - memorize all colors!
| Color | Gauge | Flow Rate | Use Case |
|---|---|---|---|
| Orange | 14G | ~270 ml/min | Major Trauma, Rapid Transfusion |
| Grey | 16G | ~180 ml/min | Trauma, Surgery, Blood |
| Green | 18G | ~90 ml/min | Blood Transfusion, Rapid Fluids |
| Pink | 20G | ~60 ml/min | Most IV Infusions |
| Blue | 22G | ~36 ml/min | Pediatrics, Elderly, Small veins |
| Yellow | 24G | ~22 ml/min | Neonates, Fragile veins |
Memory Trick
'Oh Great, Green Provides Blood Quickly, Yellow'
(Orange, Grey, Green, Pink, Blue, Yellow - in descending gauge order)
Key Takeaways
- VFib (chaotic line) = Immediate defibrillation (unsynchronized)
- Air under diaphragm = Perforated viscus → Emergency surgery
- Bat wing pattern = Pulmonary edema → Diuretics + upright position
- IV Cannula: Orange (14G) = largest, Yellow (24G) = smallest