Orthostatic hypotension
Orthostatic hypotension, also known as postural hypotension,orthostasis, and colloquially as head rush or dizzy spell, is a form of low blood pressure in which a person's blood pressure falls when suddenly standing up or stretching. In medical terms, it is defined as a fall in systolic blood pressure of at least 20 mm Hg or diastolic blood pressure of at least 10 mm Hg when a person assumes a standing position.
The symptom is caused by blood pooling in the lower extremities upon a change in body position. It is quite common and can occur briefly in anyone, although it is prevalent in particular among the elderly, and those with low blood pressure.
Signs and symptoms
When orthostatic hypotension is present, the following symptoms can occur after sudden standing or stretching (after sitting):
Head Rush (TV series)
Head Rush (also billed as Head Rush Refresh in 2011) is a spin-off of the popular MythBusters show airing on Discovery's Science since it debuted in 2010.
Described by Discovery as a "commercial free hour of MythBusters mashups, hosted by Kari Byron", the show features about ten minutes of new material—experiments and quizzes presented by Kari, as well as TV celebrity and scientist appearances, pitching the idea that "science is cool"—interwoven in fifty minutes of material from MythBusters episodes.
These celebrity segments include "Cool Jobs In Science", which has featured other Science, Discovery, and TLC stars such as Dr. Michio Kaku (Sci Fi Science), Cake Boss's Buddy Valastro, Dr. G: Medical Examiner's Dr. Jan Garavaglia, and each of the other four MythBusters.
Series overview
Episodes
Season 1 (2010)
Season 2 "Refresh" (2011)
References
External links
Podcasts:
Head Rush
by: New VarsityMaybe I was in over my head, baby I am used to it.
This is my uncertain point of view, but just don't get
too close to it.
This is not another song I wrote for the broken
heartdd.
Maybe I got in over my head, baby I'm just bad news.
This is an obsession come to pass, malignant and
removed from
cavities were carved in you, the doctor said he had
good news
Nicotine and copasetic hearts weren't the things to
keep us grounded.
Staying up will keep us down for days, oh whats that
word I'm looking for.
It's enigmantic in its nature, a rare distinctive form
of you.
I've got this ready, so are you ready, cuz I am ready
to explode.
(I am ready to explode)
Maybe I got in over my head, but god it's not the first
time.
The number I've been given won't be called...
Oh what was that? Um... nevermind.
I reach conclusions far too soon, I've met my match so
how about you?
I'm occupied by little things that get stuck on my
mind.
I know that I am in over my head, I know that I am in