Im a medical student who is going through the core medicine rotatation. I have used this app several times to analyze ABGs and it does the job quite well. You can recall previous entries with the refresh button. The graph mode that shows you were you are on the blood gas spectrum is also very helpful.
A venous blood gas analysis mode (limited as it is) would also be helpful. It would also be helpful if it was possible to more explicity save prior ABG analyses. I have compared the results from Acid Plus with the results from the Mediquations Acid-Base compensation. The two are consistent but at times when the ABG are somewhat off (due to analyzer issues, etc.) or otherwise ambiguous, Mediquations provides alternative interpretations, which Acid Plus does not. However, Acid Plus has been reasonable and presented the most likely interpretation which has been consistent with clinical observations in cases that I have checked.
One area of possible inaccuracy could occur in cases where the albumin is very low. From Rennke and Denker (2007), in hypoalbuminemia, the normal anion gap value must be adjusted downward. "The approximate correction factor is a reduction in the anion gap of 1.5 mEq/L for every 1.0-g/dL reduction {from 4.0 to 4.5} in the plasma albumin concentration ...." Thus, low albumin can change the interpretation of anion gap. This application does not consider this.
lukner about Acid Plus - The ABG Calculator