Mediquations Blog

Yup, yet another update has been submitted to the app store.  Here are the changes:

- NEW: More robust units support allows you to change the units for specific variables.  Great for international users.
- NEW: 16 new equations!

• Aortic Valve Area (Continuity)
• Aortic Valve Area (Gordon)
• Arterial Oxygen Content
• Arterial Oxygen Delivery
• Body Surface Area (Unknown Height; Current Formula)
• CURB-65 Score for Community Acquired Pneumonia
• Heart Rate from EKG
• IV Drip Rate
• Mini-Mental Status Exam (MMSE)
• Number Needed to Treat (NNT)
• Oxygen Index
• P/F Ratio
• Pregnancy Calculator (enter LMP or Due Date)
• TIMI NSTEMI
• TIMI STEMI
• Urinary Calcium Excretion (Ca / Cr)

- CHANGED:  Fixed a bug in the corrected calcium formula, which only appeared when using SI units.
- CHANGED:  Fixed a minor bug in the corrected LDL formula, which only appeared when using SI units.
- CHANGED:  Added SI units for Corrected Phenytoin formula.
- CHANGED:  Ideal Body Weight will now show pounds when Units are set to US units.

As you can see, the biggest change is the ability to change the units for variables on the fly.  For example, if you want to use kg and cm for weight and height when calculating GFR, but you also want to use mmol/L for creatinine and sodium, you can now adjust the units accordingly.  This is a much requested feature from international users, so I’m proud to put it into this version.

Enjoy!

Mediquations 1.0.2 is now on the app store, complete with 29 new formulas and favorites support!  See our previous post for more info.

So every evening, I like to take a look at how Mediquations is doing on the App Store.  Man, was I surprised to see this… Mediquations is now in the Top 100 Paid apps.  Granted, it’s number 99 out of 100, but I never had any idea it would become so well received.  Thanks to everyone for your continued support!

The ongoing work to make Mediquations the ultimate medical calculator continues!  I have just uploaded Version 1.0.2 to the App Store.  Here’s a list of all of the changes.  Hopefully, Apple will approve it sometime this week. Enjoy!

NEW: New Favorites menu makes it easy to keep a list of your favorite equations.
NEW: 29 new equations!

• Abbreviated Mental Test Score (AMTS)
• APACHE II score
• Basic Activities of Daily Living (ADL) (Barthel)
• Boston Criteria for Heart Failure
• Carboplatin Dosing
• CHADS Score
• Child-Pugh Criteria
• Delta Gap
• Dermatome Map (Reference; No Calculation)
• Creatinine Clearance (Cockcroft Gault) (CrCl)
• Creatinine Clearance (measured) (CrCl)
• Fractional Excretion of Calcium (FECa)
• Fractional Excretion of Urea (FEUrea)
• Free Sodium Deficit for Hyponatremia
• Gas Unit Conversion (mmHg to/from kPa)
• Iron Dextran Dosing
• Light’s Criteria
• Maximum Allowable Blood Loss
• Opiate Equivalence
• Pneumonia Severity Index
• Pulmonary Vascular Resistance
• Rate Pressure Product
• Revised Trauma Score (regular and coded)
• Serum Ascites Albumin Gradient (SAAG)
• SIRS Criteria
• Steroid Equivalence
• Systemic Vascular Resistance
• Tubular Resorption of Phosphate (TRP)
• Urine Output

CHANGED:  Added EtOH as an optional parameter to osmolality
CHANGED:  Framingham score now shows SI units for cholesterol and HDL when in SI unit mode.
CHANGED:  Corrected bug in QT interval: heart rate and measured QT intervals were reversed.
CHANGED:  Added support for RR interval as well as boxes to Corrected QT.
CHANGED:  Corrected bug in Peak Expiratory Flow Rate: units were incorrect (mL/min vs. L/min).
CHANGED:  Fixed bug in Age which would give an invalid answer for years earlier than 1940.

Check iTunes or the App Store to update Mediquations.

I’m preparing to submit version 1.0.2 to Apple for review, so keep your eyes peeled for this major update!

Just to you let you all know, I have submitted the next version of Mediquations to the App Store for review.  There’s no saying when Apple will approve the app, but hopefully it will be up within the next few days.

Version 1.0.1 is overall a small release that polishes up the application and fixes some minor bugs.

The biggest welcome change is a new custom, calculator-style keyboard to make it much easier to enter values.  The iPhone keyboard only uses a small row of numbers, which makes it difficult to enter data, especially when the number keys are the only keys being used.

Here’s a sneak peek at the new value entry screen:

Changes since Version 1.0:

• NEW: New calculator-like number pad makes it easy to edit values.
• CHANGED: US Units is now default for new users.  This can be changed in the iPhone Settings application.
• CHANGED: Minor changes to the “More Info” section for a few equations.
• CHANGED: Fixed many memory bugs that could cause Mediquations to crash.

I have received several emails asking how to change from SI units to US units in Mediquations.  As a person who really cares about user interface design, I apologize if the process of switching units isn’t intuitive.  However, Apple requests that all applications store their settings in the main Settings application.

In this tutorial, I’ll show you how to switch units.  Let’s get started.

1) Exit out of Mediquations (easy step, right?)

2) Touch “Settings” from the home screen.

3) Scroll down to the bottom of the settings screen, and you should see “Mediquations” listed.  Touch “Mediquations”.

4) Touch Units.

5) Pick your desired unit type (US units or SI units).  Then push the Home button to get back to the main screen.

6) Launch Mediquations.  And you’re done!

Well, after being in development for more than a month, Mediquations has appeared on the iPhone App Store!  Whereas most applications are rejected on the first attempt for UI and code modifications, Mediquations was accepted by Apple on the first try.

I have received several emails already from new users with great feedback regarding new features and equations.  I will do my best to accommodate these requests.  Thanks to everyone who sent in feedback!

I’d like to clarify that support for US and SI units are already included with Mediquations 1.0.  I will show you how to change units support in just a bit.

Mediquations is off to an exciting start!  Thanks again for your support!