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Old 09-01-2012
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Smile Stress and Sleep Deprivation Effect

An investigator is studying the effects of sleep deprivation in healthy volunteers. For 6 nights in a row, a volunteer is allowed no more than 4 hours of sleep each night. At the end of the week, Lab studies are most likely to show which of the following?

A. Decreased cortisol levels
B. Decreased dopamine levels
C. Decreased lymphocyte levels
D. Decreased thyroid stimulating hormone
E. Increased human growth hormone
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Old 09-01-2012
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Decreased Lymphocyte level
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it's C) decreased lymphocyte levels

lymphocytes ,GH levels decrease
cortisol,TSH levels increases
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Old 09-01-2012
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Originally Posted by venky2600 View Post
it's C) decreased lymphocyte levels

lymphocytes ,GH levels decrease
cortisol,TSH levels increases
cud u tel me wer u read dis frm venky??
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Default my answer :)

C. Decreased lymphocyte levels
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Originally Posted by sruthi View Post
cud u tel me wer u read dis frm venky??
actually, the volunteers are in sleep deprived conditions.....so all these changes occurs in sleep deprived individuals...
it's mentioned in kaplan videos and text behavioral science
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it's C) decreased lymphocyte levels

lymphocytes ,GH levels decrease
cortisol,TSH levels increases

And Dopamine increases too
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Old 09-01-2012
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Quote:
Originally Posted by koolkiller88 View Post
An investigator is studying the effects of sleep deprivation in healthy volunteers. For 6 nights in a row, a volunteer is allowed no more than 4 hours of sleep each night. At the end of the week, Lab studies are most likely to show which of the following?

A. Decreased cortisol levels
B. Decreased dopamine levels
C. Decreased lymphocyte levels
D. Decreased thyroid stimulating hormone
E. Increased human growth hormone
Would go with C.

TSH and cortisol are stress hormone which should be increase under stress.
GH increase during deep sleep
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Old 09-01-2012
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Default As most of you answered

A. Decreased cortisol levels
B. Decreased dopamine levels
C. Decreased lymphocyte levels
D. Decreased thyroid stimulating hormone
E. Increased human growth hormone

Remaining things will be inverse of what above mentioned. So don't get stressed due to USMLE prep. You will get more prone to INFECTION.
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