Key: Part B Practice Interpreting Electrocardiograms Answer

Lena laughed. “You’re way off. Check the key.” But Jamie insisted: “This isn’t Case 14. The lead labels are wrong. Lead II is where V3 should be.”

Lena froze. She compared the tracing in Jamie’s packet to the master answer key’s description. The key said “sawtooth flutter waves in II, III, aVF”—but on Jamie’s strip, the baseline was flat. Then she noticed: the ECG machine had misprinted lead labels due to a loose cable. Jamie had interpreted the actual morphology , not the labels. part b practice interpreting electrocardiograms answer key

That day, Lena revised the lab’s instructions. “Don’t use the answer key to memorize. Use it to calibrate your eyes. If the key says ‘anterior STEMI’ but you see diffuse ST elevation with PR depression, don’t mark yourself wrong—suspect pericarditis or lead placement error . The key is a hypothesis, not a verdict.” Lena laughed

Three months later, a real ED patient arrived with chest pain. The computer read “normal.” But one student, remembering the ghost in the grid, spotted subtle T-wave inversions mismatched with the computer’s lead labels. Turned out: dextrocardia with lead reversal. Saved the patient from unnecessary cath lab activation. All because an answer key taught them to question the expected . The lead labels are wrong

Dr. Lena Sharma was a new cardiology fellow. Every Tuesday, she ran a “Part B” ECG lab for third-year medical students. They’d practice interpreting squiggly lines—rate, rhythm, axis, intervals—and then check their work against the official Answer Key . But the key was terse: “Sinus tachycardia. Non-specific ST changes. No acute ischemia.” Boring but safe.

8 Comments

Jason Green on July 7, 2014 at 12:52 pm

Hi Ben,
Great article and a very comprehensive provisioning guide! Things are moving very fast at snom and the snom 7xx devices (except currently the 715) are now supplied automatically as “Lync ready” and can be easily provisioned straight out of the box. A simple command of text into the Lync Powershell and voila!

You can find all the details here:
http://provisioning.snom.com/OCS/BETA/2012-05-09 Native Software Update information TK_JG.pdf

Regards,
Jason
Jason Green on July 7, 2014 at 12:54 pm

Link above was broken:

http://provisioning.snom.com/OCS/BETA/2012-05-09%20Native%20Software%20Update%20information%20TK_JG.pdf
Ben Lee on July 7, 2014 at 2:03 pm

Hi Jason, Thanks. It’s good to hear that’s an option, this post was based off a mini customer deployment we had a few months ago…
(Also can’t wait to test out the upcoming BToE implementation)

Ben
Jan Boguslawski on October 14, 2015 at 10:43 pm

Hi Ben,

just stumbled across your great article. Please note the guide still available (now) here:
http://downloads.snom.com/snomuc/documentation/2012-02-06_Update-Guide-SIP-to-UC.pdf

is kind of superseded by the fact that for about 2-3 years the carton box FW image (still standard SIP) supports the UC edition documented MS hardcoded ucupdates-r2 record:

“not registered”: In this state the device uses the static DNS A record ucupdates-r2. as described in TechNet “Updating Devices” under: http://technet.microsoft.com/en-us/library/gg412864.aspx.

In short: zero-touch with DNS alias or A record is possible. SIP FW will not register but ask for the CAB upload based UC FW and auto-pull it if approved (but only if device was never registered: fresh from box or f-reset).

btw: the SIP to UC guide was made as temporally workaround, but I guess the XML templates still provide a good start line.

Also kind of superseded with Lync Inband Support for Snom settings:

http://www.myskypelab.com/2014/07/lync-snom-configuration-manager.html
http://www.myskypelab.com/2014/08/lync-snom-phone-manager.html

another great tool – powershell on steroids with Snom UC & SIP: http://realtimeuc.com/2014/09/invoke-snomcontrol/
(a must see !)

Please dont mind if I was a bit advertising.

Thanks and greetings from Berlin, also to @Nat,
Jan
Susan on October 15, 2015 at 5:55 pm

Fantastic article! Thanks for sharing. We’ll be transitioning our Snom 760s to provision from Lync shortly.

Are there any licensing concerns involved?
Ben Lee on October 15, 2015 at 6:11 pm

Thanks Susan,
From a licensing point of view you need to make sure you have the UC license for the SNOM phones and on the Lync side if you are doing Enterprise Voice need a Plus CAL for the user concerned…

Hope that helps?

Ben
Ben Lee on October 15, 2015 at 6:12 pm

Thanks Jan 🙂
Susan on October 15, 2015 at 6:12 pm

Thanks for the licensing info. It helps a lot!