Nathan Johnstone

UofG Biomed Cardiology BIOM4180

[Nathan Johnstone @njohnstone10]

April 1: the only day of the year that people critically evaluate things they find on the internet before accepting them as true.

Thanks @glenpyle for teaching us #biom4180 students to think critically every day of the year.

May the cardio tweets continue!

[Nathan Johnstone @njohnstone10]

#biom4180

[Fernando de la Guía @Cardio_delaGuia]

📚Effect of Marine Omega-3 Fatty Acid and Vitamin D Supplementation on Incident Atrial Fibrillation.
👉🏼The findings do not support the use of either agent for the primary prevention of incident #AFib.
https://t.co/eRBlBG80Ye @JAMA_current @JAMACardio
#cardiotwitter #Cardiology

[Nathan Johnstone @njohnstone10]

@lilyymeng I agree. To clarify, what I meant was that both physicians and the general public need to be educated about the differences in heart attack symptoms btw males and females, as this knowledge gap may be what’s contributing to the ⬆️ in misdiagnoses seen in females. #biom4180

[Nathan Johnstone @njohnstone10]

@lilyymeng Interesting how the article notes “low suspicion of heart attack occurs in both women themselves and in physicians.”

So to address this issue, it’s important to improve not only physician education, but the general public as well! #biom4180

[Nathan Johnstone @njohnstone10]

Cardiac complications after non-cardiac surgery are not uncommon.

Routine troponin testing post-op is under-utilized in patients that meet #troptest recommendations.

Closing the trop test gap could ⬇️ #CV complications post op. #biom4180
https://t.co/NG1dXxbOeF

[NEJM @NEJM]

Mental illness is so stigmatized that despite its disproportionate prevalence in the field I was entering, I had to pretend I’d never faced it. My personal statement was the first of many experiences that highlighted this discordance between self-care and patient care.

[Nathan Johnstone @njohnstone10]

@isskor @salma_askar Sleep apnea may be a confounder. #sleepapnea is strongly associated with excessive day time somnolence and also with ⬆️ #CV events including death. 😴 #biom4180

https://t.co/SHsgLKngjw

[Nathan Johnstone @njohnstone10]

#biom4180

[CanadiEM @WeAreCanadiEM]

TINY TIPS: Causes of atrial fibrillation.
@UofTFamilyMed resident Dr. Barrett Grattan breaks down the PIRATES mnemonic.

https://t.co/IQvIQ9R7Sn

[Nathan Johnstone @njohnstone10]

@jenelle_huras I always like reading studies that have unexpected results!

I wonder how the all cause mortality would compare to the #CVD mortality for the ⬆️fat group? 🤔

Did they die of another cause before a CVD death? #biom4180

[Nathan Johnstone @njohnstone10]

Cardiac macrophages produce AREG - a critical regulator of cardiac impulse conduction

⬇️ AREG lead to ⬆️ sudden #cardiacdeath

Targeting AREG as a potential therapeutic 💊 may prevent sudden cardiac death ♥️ #biom4180 https://t.co/WMbmOjDw4N

[Nathan Johnstone @njohnstone10]

@uogcynthia Thanks for this post.

There are a lot of inequities in health care outcomes for Indigenous peoples of Canada that stem from colonial policies and intergenerational trauma.

Here’s a good article outlining steps to address these inequities. #biom4180

https://t.co/oIFIA5dwxZ

[Nathan Johnstone @njohnstone10]

No medications that directly enhance systolic function have improved outcomes in patients with #HFrEF

Omecamtiv mecarbil, a new cardiac myosin activator, ⬆️ cardiac contractility and ⬇️ #heartfailure and sudden death. #biom4180 https://t.co/U11R67hsHO

[Nathan Johnstone @njohnstone10]

To all who voted atrial flutter, you are correct!

Typical atrial flutter can be identified by the saw tooth pattern of the p-waves. #biom4180

[Nathan Johnstone @njohnstone10]

Time to practice those #ECG interpretation skills!

What ECG pattern does this image most closely depict?

Try the poll below and check back tomorrow for the answer! #biom4180

[Nathan Johnstone @njohnstone10]

#biom4180

[Nathan Johnstone @njohnstone10]

@jenelle_huras Mimicking some of the beneficial effects of exercise could be very useful for ❤️ health!

A similar study found that activating AMPK (like AICAR) improves glucose homeostasis, however induced cardiac hypertrophy which could be problematic. 🤔 #biom4180

https://t.co/5qp16Mtdlm

[Nathan Johnstone @njohnstone10]

@isskor I think taxing processed food is not only bad policy but an oversimplified solution.

Where do you draw the line on what processed food is?

What about low SES groups that can’t afford healthier food?

Maybe government subsidized produce would be a better idea. 🥬
#biom4180

[Nathan Johnstone @njohnstone10]

Have you every heard of electroimmunology?

This review article discusses the electrophysiological properties of leukocytes and how these cells relate to conduction and #arrhythmia in the #heart ❤️#biom4180 https://t.co/FUvbrxataa

[Nathan Johnstone @njohnstone10]

#biom4180

[Nathan Johnstone @njohnstone10]

Did you know that alligator 🐊hearts are unique in that they do not fibrillate when exposed to cold stress? ❄️

Fibrillation is one of the most dangerous #arrhythmias leading to clots and stroke and can be triggered by #hypothermia .
#biom4180
https://t.co/coF7RJqvAe