Which of the following are true regarding an uncompensated Thorpe tube flowmeter?
I. The needle valve is proximal to the Thorpe tube.
II. The needle valve is distal to the Thorpe tube.
III. The flowmeter reads accurately in the presence of back pressure.
IV. The flowmeter reads higher in the presence of back pressure.
A) I and III
B) I and IV
C) II and III
D) II and IV
Question 2
Fixed orifice flowmeters operate by:
A) the orifice size determining gas flow
B) the pressure set proximal to the orifice determining gas flow
C) the venturi principle
D) balancing pressures across a proportioning valve
Intradermal drug administration: (a) cross section of skin showing depth of needle insertion Source:
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Needle thoracostomy