Hacking the QTc

The QT interval—a measure of the duration of the overlapping action potentials from two billion ventricular muscle cells—has fascinated physiologists since the dawn of electocardiography.  Too long or too short, it can be a harbinger of ventricular arrhythmias and sudden death. Sensitive to electrolytes, drugs, and autonomic tone, susceptible to congenital ionic channel mutations, difficult to… Continue reading Hacking the QTc

The Smartphone is an Essential Medical Instrument

The storage capacity of the human mind is amazing. One estimate of the size of the brain’s “RAM” is as high as  2.5 petabytes (a million gigabytes). The number is based on the total number of neurons in the brain and the total number of possible connections per neuron. I suspect it is an overestimate,… Continue reading The Smartphone is an Essential Medical Instrument

CenturyLink Sucks, Part 57

I don’t usually work at a coffee shop, but here I am, at Panera’s dealing with their bad (also CenturyLink) internet service, because my internet service is down at home. Yes we are going into DAY NUMBER 4 of the great CenturyLink Internet Service Outage of Parker, Colorado. This started inauspiciously, perhaps coincidentally, during a… Continue reading CenturyLink Sucks, Part 57

Escape from Escape

During my college days computers were run from teletype machines. These teletypes had a typewriter keyboard layout extended with unfamiliar keys like Control (Ctrl) and Escape (Esc).  You could press Ctrl-G and make the teletype ring its bell — ding! You could press Esc when you mistakenly wrote a BASIC program with an infinite loop and make the program… Continue reading Escape from Escape

Geeky Docs

I remember the disdain some of the EHR trainers had for their trainees back when our hospital system “went live” several years ago. Of course this disdain was tempered by their knowledge that if docs weren’t so computer illiterate, or the user interfaces of the EHR systems weren’t so awful, or if the EHR software… Continue reading Geeky Docs

More Microsoft Migraines

When I ported the EP Calipers app (an electronic calipers app) to Microsoft Windows, I initially planned to write a Universal Windows Platform (UWP) app. The UWP is an initiative by Microsoft to allow developers to have one code base that can run on all Windows platforms, from PCs to phones to Xbox to HoloLens.… Continue reading More Microsoft Migraines