Is It Time We Changed How We Measure Length of Stay for Hip and Knee Arthroplasty?

Review of “The People Vs Tech: How the Internet is Killing Democracy (and How We Save It)” by Jamie Bartlett

The People Vs Tech: How the Internet is Killing Democracy (and How We Save It) by Jamie Bartlett. New York: Dutton, 2018. 256 pp., £8.99 (p/b), ISBN 978-1785039065.

Sympathovagal balance: how should we measure it?

There are complex interactions between the sympathetic and parasympathetic nervous system inputs to the sinus node. The concept of "sympathovagal balance" reflects the autonomic state resulting from the sympathetic and parasympathetic influences. Despite widespread usage of a variety of heart rate (HR) variability parameters as indexes of sympathovagal balance, no index has been validated as a ...

When is sleepiness a disease? How do we measure it?

What Does It Mean and How Do We Measure It?

T he paper by Bonow et al' in this issue of Circulation reports important empirical observations on measuring myocardial viability in humans with the potassium analogue thallium-201. After obtaining standard 20'1f exercise and redistribution images, a second dose of 201TI was injected and a third (reinjection) image was obtained beginning 10-15 minutes later. The reinjection images identified v...

Colour : How We See It and How We Use It