Arm tongue time is ?
a) 13 secs
b) 15 secs
c) 20 secs
d) 40 secs
Correct Answer - A
Ans. A. 13 secs
Arm to tongue time is method for knowing the circulation time i.e.
time taken by a particle in the blood to flow from one point in
circulation to other.
It measures the linear velocity of blood.
To calculate-the arm to tongue time 5 ml of 2% of decholine is
injected into cubital vein.
As soon as drug reaches the tongue, patient feels a bitter taste.
The total time taken from arm to tongue is 13 seconds.
Similarly arm to lung time is calculated with the help of ether. It is d
seconds.