Inhalational & Research Screens

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Updates and Fixes


1. Please uninstall ACTc from your handheld. You do not need to delete the program from your application library in iTunes. Reinstall and synchronize the databases PRIOR to any use of ACTc to correct a database.

2. Error Fix: If ACTc is exiting prematurely, please re-install by deleting ACTc on your device and iTunes library. Then download the newest version and reinstall.

Quick Tip:

If you are in a limited wifi area and cannot connect to the internet, you can still use ACTc.


  1. Goto your iPhone/iTouch settings menu and disable your wifi
  2. Sign onto ACTc
  3. You are now able to use ACTc offline
  4. When you have internet service again, sign back on to take advantage of all of ACTc's features.

Want to Add a Drug?

You must fist sign into the Web Portal *

Remember that your email address on file is Case Sensitive

  1. Click on the "Add Drug" Feature
  2. Enter the data for the new medication
  3. Click Save
  4. Sign out
  5. Sync your handheld by going to "More ACTc" area
  6. Click on "ACTc Synchronize"
  7. Select Drugs to Sync your new additions
  8. They will appear in both the Snap Shot selection list as well as in the Drug Screen.
  9. Further modification can be done either on the iPhone/iTouch or via the web portal
  10. To delete a drug, Search for the drug via the Web Portal and select the delete link, then confirm (default drugs cannot be deleted)

Screen Shot 1

Screen Shot 2

Screen Shot 3

Inhalational Screen

This ACTc screen has been influenced by the writings of Egar, Bailey, Nikalls, & Mapleson to show the relationship of Age, Mac multiples, and temperature on Minimum Alveolar Concentration (MAC) of the most common Potent Inhalational Agents (PIA)

  • The sliders can be changed by sliding to the desired value or a specific value can be type in by first selecting the Title of the slider and inputting the value
  • The first bar shows the changes in values in the above variables compared to a static 40 year old value at MAC awake (MACa), MAC, and MAC BAR (Blunting/Blockade of Autonomic Responses)
  • The Middle Range bar shows the age adjusted MAC in respect to PIA & N20 concentrations in regards to temperature impact
  • The CSDT values (inspired and guided by the works of Egar and Bailey) provided are 50 – 95% for various time intervals
  • Based on the ET PIA readings the CSDT % to reach MACa is shown

Please refer to the "Help" button for a detailed explaination and calculations!

Research Screen


  • Based on the surgery inputted, ACTc searches the US National Library of Medicine databases over 20 million articles for current research for both preoperative and management considerations
  • The user can also add or change the query text string or change the search focus to Google or Google Books.
  • If an article was found that the user wants to keep for further review, ACTc allows the user to save it and also upload the link for later
    • Click "Save"
    • Name the article
    • Click "Done"
  • This section also provides another notes section for the user to help organize their thoughts on the research articles reviewed.
  • To retrieve /upload the research articles
    • Goto the "Save Research" screen
    • Click on link to view
    • Click on "Upload" to sync to your online database

Rate Cases Online

  • This area allows the user to review the cases shared and provide feedback.
  • Anesthesia is commonly a solo sport, and case sharing occurs very little.

ACTc encourages each user to grow the case management feature and share their own clinical pearls for the benefit of others!

A Reminder

On each screen, ACTc has a “Help” button which explains in detail the research that establishes the calculation and thought flow of that specific screen. A complete list of references can be found in the About US section under “Readings” as well as some of our testers who took their valuable time to assist in ACTc’s development.

Legal Notice: ACTc is an educational tool that stresses many important aspects of the science of anesthesia. It accomplishes this by showing the multiplicities and connections of the daily calculations that every anesthesia provider uses for each case. Each calculation is further explained in detailed within each help section. Every effort has been made to ensure that the proper information has been provided to assist in the educational aspect of this program. Your use of ACTc releases its developers and Gasshead from any liability from ACTc use or misuse. ACTc is intended for education use only and is not intended to replace or dictate clinical decisions by trained anesthesia providers. Gasshead wishes the best of luck to all of its users