| How to use hydrocolloid dressings? |
| Remove the dressing before bath |
| Wipe the pus-like material with wet cotton |
| Wash the area with soap and water when you take bath |
| Press the area dry after bath |
| Paint the area and skin around it with povidone iodine 5% solution Wait for 3 min for the solution to dry |
| Apply the dressing, so that the sticky side of the dressing which adheres to the paper sticks to the wound |
| Please remember that when you change the dressing you will find a yellowish brown material which may look and smell like pus, but this is not pus, it is the material in the dressing which melts when it comes into contact with the wound |
| Calibration of CO2 laser fluence[69] |
| Power = joules/sec watts |
| Spot size = πR2
|
| R = Radius = Diameter/2 cm |
| Irradiance = Power/spot size |
| Fluence = Irradiance × Time in sec |
| If |
| Diameter = 0.1 mm = 0.01 cm |
| Time = 0.9 m sec = 0.0009 sec |
| Radius = 0.005 cm |
| Radius2 = 0.000025 cm |
| Spot size = πR2 = 0.00007857 |
| Calibration of CO2 pixel laser |
| W = J/sec |
| 21 W = 21J/1 sec ⇒ 21W × 1 sec = 21J |
| ⇒ 21 W × 0.5 sec = 10.5J |
| We are using the 7*7 tip, hence 49 pixel dots. |
| For each pixel dot: 10.5 W/49 pixels = 0.21 W/pixel dot |
| The diameter of each pixel dot is 100 micron: |
| J = W/A ⇒ 0.21/(0.1)2*II/4 = 26.75 J/P/cm2
|
