The ABG analyzer uses Androgue's 2009 review paper in KI to create a mathematical framework to fully interpret ABGs. This has been done before, I recommend ABG in my lectures and there are 6 programs in the iTunes store whose name starts with "ABG" and appear to do the same thing.
MedCalc offers a few features that set it apart. First, data entry is very slick. The keypad is well designed and other programs that use a wheel or + and - buttons are exercises in frustration.
The other nifty feature is the application is live. You enter the pH and pCO2, and it immediately fills the HCO3 based on a Henderson-Hasselbalch calculation. No calculate button or analyze button. Instant interpretation. It will immediately interpret the ABG and provide:
- the primary disorder
- additional primary disorders, altering compensation
- If you add the sodium it will calculate the anion gap
- It will calculate the delta ratio to determine if there is an additional non-anion gap metabolic acidosis or metabolic alkalosis.
|Page 13, Acid Base Haggadah|
I will update the document to include MedCalc as my suggested tool.
My final thoughts on MedCalc is that it is a delight to use. The keypad can be swept away to see the data underneath. You can get to the supporting data for any equation by tapping on the 'i" in the upper right corner (a very Palm-esque method) or by swiping to the right. Tap on the wrong formula from a list? Swipe left to go back. Entering multiple variables for a calculation, swiping on the keypad advances you to the next field. If you want to add your own notes on on any formula, you can do that.
|My notes on the TTKG formula in the yellow|
The handsome and generous authors have given me 15 codes so you can get the program for FREE! The standard calculator is $1.99 and the pro version is $4.99.
Here's what you need to do:
- Apologize to Pfiffner and Tschopp for not having purchased their superior program before now.
- You can do this by twitter (Pascale and/or Mathias) please tag @Kidney_boy or use the hashtag #ImOnlyDoingThis4TheFreeSoftware in your apology so I know you did it.
- Alternatively you can also apologize by e-mail, remember to cc me (joel.topf at gmail dot com).
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- Shame on you US News and World Report
- Do we need to EVOLVE our views on EBM in dialysis
- Team based learning, reason for optimism about medical education
- You hear about the kid who sold his kidney for an iPad?
- Three of them with each meal...
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- Dogs, squirrels and evolution
- The agony and ecstasy of of secondary hyperparathyroidism
- How the kidney works, a primer for non-medical folks
- One of my friends had a heart attack
- Celebrity interaction: How I "met" Margaret Atwood on Twitter
I received no money or payment for this promotion. The MedCalc guys offered the codes and I had to make it as complex as possible (I am a nephrologist).