Which of the following is false about the galvanic fuel cell O2 ...

[bb]

Which of the following is false about the galvanic fuel cell O2 analyzer?
 
  a. It actually measures the PO2 and not the O2 concentration.
  b. It requires an external power source (al-ternating current line or batteries).
  c. It has a slower response time than the Clark electrode.
  d. Its fuel cells deplete and must be periodi-cally replaced.

Question 2

What medication is most useful for the treatment of premature ventricular contractions?
 
  a. Digoxin
  b. Atropine
  c. Lidocaine
  d. Digitalis

[joanwhite]

Answer to Question 1

ANS: B
Most galvanic fuel cells use a gold anode and a lead cathode. Unlike the Clark electrode, current flow across these poles is generated by the chemical reaction itself. Thus, unless accessories such as alarms are included, a galvanic cell needs no external power. Unfortunately, this means that galvanic cells respond more slowly than do Clark electrodes, sometimes taking as long as 60 sec.

Answer to Question 2

ANS: C
Antiarrhythmic medications (such as lidocaine) may offer a temporary solution until the underly-ing cause can be identified and treated.

[bb]

Thank you

[joanwhite]

No problemo