Selected work · 02 · Respiratory Lab
Respiratory Lab
Interactive modules for oxygen, humidity, aerosol and tracheostomy care. Students change a setting, such as the device, flow, particle size or PO₂, and the module shows the result. The clips below were recorded from the modules while the settings were being changed.
O₂ Lab
6 devices, hypoxemia, hypoxia, O₂–Hb curve
Humidity Lab
8 modules
Trach Lab
10 modules
3D lecture
11 scenes
01 · Module
Venturi mask
The oxygen jet entrains room air through the entrainment ports. Students choose the FiO₂ adapter and the patient's inspiratory demand.
- Students change
- FiO₂ adapter (24% to 50%) · Inspiratory demand (20 to 60 L/min)
- Module shows
- Source flow, air-to-oxygen ratio and total flow. 24%: 2 L/min, 25:1, about 52 L/min total. 35%: 8 L/min, 5:1, about 48. 50%: 12 L/min, 1.7:1, about 32. At a demand of 60 L/min it flags total flow below demand.
02 · Module
Oxyhemoglobin dissociation curve
The curve, the blood vessel and the hemoglobin binding sites update together as PO₂ changes.
- Students change
- Location (lung, resting tissue, active tissue) · PO₂ (10 to 100 mmHg) · Normal, right or left shift
- Module shows
- Saturation and P50 for the current settings. PO₂ 100: 97%. PO₂ 40: 75%. PO₂ 25: 45% on the normal curve, 34% with a right shift (P50 32).
03 · Module
Particle deposition
Aerosol travels from the mouth to the alveoli and deposits by impaction, sedimentation or diffusion, depending on particle size and breathing pattern.
- Students change
- Particle diameter (0.1 to 15 µm) · Slow or fast inspiration · Breath-hold · Mouthpiece or tracheostomy
- Module shows
- Where particles deposit and the dominant mechanism. At 1 µm, peripheral penetration and sedimentation. Above 10 µm, impaction in the upper airway.
04 · Module
Bland aerosol delivery
A large-volume nebulizer, the tubing and condensate trap, and the tracheostomy interface. Aerosol goes to the airway and condensate drains to the water trap.
- Students change
- Driving flow (6 to 20 L/min) · Trach collar or T-piece · Therapy purpose
- Module shows
- Droplet flow through the circuit at the selected flow and interface. Therapy purpose covers bland aerosol, hypertonic saline for sputum induction and cool aerosol for croup.
05 · 3D lecture
Humidity and Bland Aerosol Therapy II
Eleven 3D scenes that run in the browser: the complete aerosol path, the large-volume nebulizer, trach collar and T-piece, particle size and MMAD, deposition mechanisms, jet, ultrasonic and vibrating mesh nebulizers, patient coaching and clinical integration.
- Controls
- Breathing rate (6 to 32 per minute) · Playback speed down to one tenth · Labels on or off
06 · Contents
Lab contents
O₂ Lab
Six oxygen delivery devices, plus hypoxemia, hypoxia and the oxyhemoglobin curve.
Humidity Lab
Eight modules: humidity, BTPS, the isothermic saturation boundary, humidifiers, HMEs, aerosol generators, bland aerosol and deposition.
Trach Lab
Ten modules: anatomy, parts, cuffed tubes, cuff pressure, inner cannula, suctioning, humidification, aerosol, speaking valves and emergencies.