/page/2

First ‘Heartless’ Man: You Don’t Really Need A Heart, Or A Pulse

Two doctors Billy Cohn and Bud Frazier from the Texas Heart Institute successfully replaced a dying man’s heart with a device—proving that it is possible for your body to be kept alive without a heart, or a pulse.

In the short film ‘Heart Stop Beating’ by Jeremiah Zagar of Focus Forward Films, Zagar documents the process of the doctors—from cutting out the whole heart of 50 calves and replacing it with centrifugal pumps, to finally implanting it into their patient Craig Lewis.

The turbine-like device, that are simple whirling rotors, developed by the doctors does not beat like a heart, rather provides a ‘continuous flow’ like a garden hose.

After the doctors experimented on one of the calves, Abigail, Doctor Cohn told NPR: “If you listened to her chest with a stethoscope, you wouldn’t hear a heartbeat. If you examined her arteries, there’s no pulse. If you hooked her up to an EKG, she’d be flat-lined.”

Craig Lewis was a 55-year-old, dying from amyloidosis, which causes a build-up of abnormal proteins. The proteins clog the organs so much that they stop working, according to NPR.

But after the operation, with the ‘machine’ as his heart’s replacement, Lewis’ blood continued to spin and move through his body.

However, when doctors put a stethoscope to his chest, no heartbeat or pulse can be heard (only a ‘humming’ sound)—which “by all criteria that we conventionally use to analyze patients”, Doctor Cohn said, he is dead.

This is proof that “human physiology can be supported without a pulse”.

(via tuesdayswithrory)

3 months ago  7,465 notes

(Source: milesian, via f-r-3-e-d-0-m-c-o-m-e)

3 months ago  86,965 notes

Why Fingernails on Blackboards Sound So Horrible Much time has been spent, over the past century, on working out exactly what it is about the sound of fingernails on a blackboard that’s so unpleasant. A new study pins the blame on psychology and the design of our ear canals. » via Wired

Why Fingernails on Blackboards Sound So Horrible

Much time has been spent, over the past century, on working out exactly what it is about the sound of fingernails on a blackboard that’s so unpleasant. A new study pins the blame on psychology and the design of our ear canals.

» via Wired

(via teachingliteracy)

6 months ago  454 notes View high resolution

scientistintraining: Steps of the inflammatory response

scientistintraining: Steps of the inflammatory response

8 months ago  20 notes View high resolution

Benefits of Static Stretching

movingupthewall:

The goal of stretching is to:

  • achieve a normal range of joint motion
  • mobilize soft tissues surrounding the joints

Static stretching involves holding a muscle in a lengthened position for about 30 seconds, to a point of discomfort (but not pain). Stretching should be done after warming up to achieve an increased range of motion most effectively.

The Benefits of Stretching include:

  • Improved Physical Performance: the flexible joint can move through a greater range of motion, which improves overall performance
  • Improved Posture: poor posture often results from the improper position of various parts of the body and the effects of gravity over a number of years; stretching can realign soft tissues to improve and maintain good posture.
  • Decreased Injury Risk: stretching decreases soft tissue resistance so there is less likelihood of exceeding maximum tissue extensibility during exercise


(Source: rock-climber)

1 year ago  12 notes

(via surrendersanity)

1 year ago  3,141 notes View high resolution

(via bonestomakeabeat-deactivated201)

1 year ago  1,646 notes

Every day, pick one patient that you saw in clinic a couple days before, and call the patient personally “just to check on how you’re doing.” Don’t pick a complicated patient, or a patient that’s going to talk your ear off on the phone. Just choose someone who you were able to help easily and skillfully. After that short phone call, you will recognize how you made a difference in that person’s life; meanwhile, the patient will hang up the phone feeling that they have the best doctor in the world!
– A professor in my residency program, talking about how to keep from becoming a “jaded” doctor. (via cranquis)

1 year ago  78 notes

qmannola: Medical students at the dissection table in Anatomy lab. Medical College of Virginia, ca. 1898

qmannola:

Medical students at the dissection table in Anatomy lab. Medical College of Virginia, ca. 1898

(via weepingbat)

1 year ago  20 notes View high resolution

HIV protein unveils vaccine target

sciencenote:

They found that when the HIV protein complex attaches to a CD4 protein, it rotates and flattens, exposing more of the gp41 proteins in the middle — probably allowing the gp41 protein to get closer to the cell membrane so it can lock on. It also potentially exposes an area of the virus that would be vulnerable to attack by the immune system, Cheng said. If a person were vaccinated and had antibodies to such a protein region, they might be able to stop the virus at the point of invading the CD4 T cell. The gp120 protein itself varies considerably between strains, so it has been difficult to make an effective vaccine against it. But these hidden protein regions vary less between different strains of HIV, Cheng said.

1 year ago  14 notes

First ‘Heartless’ Man: You Don’t Really Need A Heart, Or A Pulse

Two doctors Billy Cohn and Bud Frazier from the Texas Heart Institute successfully replaced a dying man’s heart with a device—proving that it is possible for your body to be kept alive without a heart, or a pulse.

In the short film ‘Heart Stop Beating’ by Jeremiah Zagar of Focus Forward Films, Zagar documents the process of the doctors—from cutting out the whole heart of 50 calves and replacing it with centrifugal pumps, to finally implanting it into their patient Craig Lewis.

The turbine-like device, that are simple whirling rotors, developed by the doctors does not beat like a heart, rather provides a ‘continuous flow’ like a garden hose.

After the doctors experimented on one of the calves, Abigail, Doctor Cohn told NPR: “If you listened to her chest with a stethoscope, you wouldn’t hear a heartbeat. If you examined her arteries, there’s no pulse. If you hooked her up to an EKG, she’d be flat-lined.”

Craig Lewis was a 55-year-old, dying from amyloidosis, which causes a build-up of abnormal proteins. The proteins clog the organs so much that they stop working, according to NPR.

But after the operation, with the ‘machine’ as his heart’s replacement, Lewis’ blood continued to spin and move through his body.

However, when doctors put a stethoscope to his chest, no heartbeat or pulse can be heard (only a ‘humming’ sound)—which “by all criteria that we conventionally use to analyze patients”, Doctor Cohn said, he is dead.

This is proof that “human physiology can be supported without a pulse”.

(via tuesdayswithrory)

(Source: milesian, via f-r-3-e-d-0-m-c-o-m-e)

Why Fingernails on Blackboards Sound So Horrible Much time has been spent, over the past century, on working out exactly what it is about the sound of fingernails on a blackboard that’s so unpleasant. A new study pins the blame on psychology and the design of our ear canals. » via Wired

Why Fingernails on Blackboards Sound So Horrible

Much time has been spent, over the past century, on working out exactly what it is about the sound of fingernails on a blackboard that’s so unpleasant. A new study pins the blame on psychology and the design of our ear canals.

» via Wired

(via teachingliteracy)

scientistintraining: Steps of the inflammatory response

scientistintraining: Steps of the inflammatory response

Benefits of Static Stretching

movingupthewall:

The goal of stretching is to:

  • achieve a normal range of joint motion
  • mobilize soft tissues surrounding the joints

Static stretching involves holding a muscle in a lengthened position for about 30 seconds, to a point of discomfort (but not pain). Stretching should be done after warming up to achieve an increased range of motion most effectively.

The Benefits of Stretching include:

  • Improved Physical Performance: the flexible joint can move through a greater range of motion, which improves overall performance
  • Improved Posture: poor posture often results from the improper position of various parts of the body and the effects of gravity over a number of years; stretching can realign soft tissues to improve and maintain good posture.
  • Decreased Injury Risk: stretching decreases soft tissue resistance so there is less likelihood of exceeding maximum tissue extensibility during exercise


(Source: rock-climber)

(via surrendersanity)

(via bonestomakeabeat-deactivated201)

Every day, pick one patient that you saw in clinic a couple days before, and call the patient personally “just to check on how you’re doing.” Don’t pick a complicated patient, or a patient that’s going to talk your ear off on the phone. Just choose someone who you were able to help easily and skillfully. After that short phone call, you will recognize how you made a difference in that person’s life; meanwhile, the patient will hang up the phone feeling that they have the best doctor in the world!
– A professor in my residency program, talking about how to keep from becoming a “jaded” doctor. (via cranquis)
qmannola: Medical students at the dissection table in Anatomy lab. Medical College of Virginia, ca. 1898

qmannola:

Medical students at the dissection table in Anatomy lab. Medical College of Virginia, ca. 1898

(via weepingbat)

HIV protein unveils vaccine target

sciencenote:

They found that when the HIV protein complex attaches to a CD4 protein, it rotates and flattens, exposing more of the gp41 proteins in the middle — probably allowing the gp41 protein to get closer to the cell membrane so it can lock on. It also potentially exposes an area of the virus that would be vulnerable to attack by the immune system, Cheng said. If a person were vaccinated and had antibodies to such a protein region, they might be able to stop the virus at the point of invading the CD4 T cell. The gp120 protein itself varies considerably between strains, so it has been difficult to make an effective vaccine against it. But these hidden protein regions vary less between different strains of HIV, Cheng said.
Benefits of Static Stretching
"Every day, pick one patient that you saw in clinic a couple days before, and call the patient personally “just to check on how you’re doing.” Don’t pick a complicated patient, or a patient that’s going to talk your ear off on the phone. Just choose someone who you were able to help easily and skillfully. After that short phone call, you will recognize how you made a difference in that person’s life; meanwhile, the patient will hang up the phone feeling that they have the best doctor in the world!"
HIV protein unveils vaccine target

About:

"If anything is sacred, the human body is sacred.”
- Walt Whitman

Following: