Thursday, October 2, 2014

Answers to Venipuncture Review Questions

When assembling the equipment for venipuncture, this must be the primary consideration:
a.    sterilized  and dry apparatuses                      e. NIL
b.    type of tourniquet
c.    brand of syringe
d.    completely labeled test tubes

2.      These are true in needle and syringe preparation, except:
a.    they must be sterile and dry                          e. NIL
b.    they must not be clogged
c.    the syringe must be disposable
d.    the needle must be fixed firmly into the hub of the syringe

3.      The tourniquet is applied in this manner:
a.    too tight to  make veins prominent                       e. NIL
b.    not too tight nor too loose
c.    loose to avoid hematoma
d.    it does not matter how you apply it


4.      The following may be employed to make veins prominent, except:
a.    opening and closing the fist                      e. NIL
b.    palpating the vein
c.    raising the arm
d.    immersing the arm in warm water

5.      These are true in applying antiseptic  to site of puncture , except:
a.    70 % isopropyl alcohol is used                  e. NIL
b.    cleanse the site in a CIRCULAR manner
c.    allow the site to dry before puncturing
d.    sterilize once

6.      The following techniques are observed in inserting the needle, except:
a.    the ball of the pad of the index finger is placed alongside the hub
b.    the bevel of the needle should be facing upwards
c.    the angle of the needle and syringe should be 45 degrees
d.    the needle should be held in line with the vein
e.    NIL

7.      When withdrawing blood, the following should be observed, except:
a.    when the needle is in the vein, slowly pull back the plunger
b.    keep your eyes on the needle
c.    do not wiggle the needle around
d.    when the needle is accidentally pulled out ,re-enter the vein without removing the tourniquet to ensure non-entry of air
e.    NIL

8.      If blood fails to enter the syringe, the following  may be the reasons, except:
a.    the needle is not in the vein
b.    the needle has not gone far enough
c.    the needle has gone through the vein
d.    the tourniquet was tied too tightly
e.    NIL

9.      In releasing the tourniquet, the following should be observed, except:
a.    before releasing the tourniquet, the fist should be opened
b.    withdraw the needle first, before releasing the tourniquet
c.    pull on either side of the tourniquet to release it
d.    the tourniquet can be released as soon as blood enters the syringe
e.    NIL

10.  The following should be observed when withdrawing the needle, except:
a.    the needle should  be jerked out of the vein very rapidly to minimize pain
b.    the needle should be withdrawn in a smooth gentle motion
c.    an antiseptic pad is applied to the wound
d.    the antiseptic can be  betadine
e.    NIL

11.  In transferring blood to the test tube, the following are observed, except:
a.    hold the plunger so that it does not slip out of  the barrel
b.    remove the needle from the syringe before dispensing blood
c.    let the blood ooze at the sides of the tube
d.    to avoid clotting, dispense rapidly by squirting directly into the test tube
e.    NIL

12.  In cleaning the needle and syringe, the following are observed, except:
a.    if they are  not  disposable (glass), they should be washed immediately
b.    use tap water or distilled water to wash glass syringes
c.    plastic syringes are disposed of properly
d.    needles should not be thrown into  biohazard puncture proof –containers but recapped

13.  Hematoma is the bluish discoloration of the skin which may be due to the following, except:
a.    failure have  the needle completely in the vein
b.    failure to release the tourniquet before withdrawing blood
c.    jerking the needle out of the vein
d.    the needle is withdrawn smoothly
e.    NIL

14.  The following are advantages of venipuncture, except:
a.    good for micro- determinations
b.    large amounts of  blood can be collected
c.    repeated determinations can be done
d.    ideal for blood chemistry determinations
e.    NIL

15.  The following are drawbacks of venipuncture, except:
a.    requires more time, skills and equipment
b.    difficult to perform on infants
c.    requires minute amount of blood which are difficult to collect
d.    many complications can occur
e.    NIL

Answers to Problem Solving, Normality, Molarity and Percent Solutions

1. What is the Normality  of a 3.6 M Sulfuric acid solution given the molecular weights?( H=1, S=32, O-16)
    a. 1.8 N          b. 3.6N        c. 4.9 N              d. 7.2 N        e. NIL

2. How many grams of HCL is used to prepare 250 ml of a 4.8 solution of HCL? (H-1, Cl-35.5)
    a. 36  G          b. 36.5 g       c. 40 g             d. 43.8 g           e. NIL

3. What is the Molarity of a 2 .5 N solution of NaOH?
a.       1.50 mol/l                   c. 3.35  mol/l                e. NIL
b.      2.5 mol/l                      d. 4.5  mol/l

4. The molecular weight of  H3 PO4 is:
a. 48                            c. 98                            e. NIL
b. 58.5                         d. 98.1

5. How many grams of  NaCl are required to make 1,000 ml. of  0.3 M  solution?
a. 36.3                         c. 26.32                       e. NIL
b. 52.6                         d. 53

6. What is the Molar concentration of a 20 grm. Of NaOH diluted to 1 liter of distilled water?
a. 1 M                                                              c. 0.5 M                       e. NIL
b. 2 M                                                              d. 1.5 M

 7. What is the amount of CaCl2.H2O in grams is needed  to prepare 0.4 N solution of
Ca Cl2?
a. 8.8                                                              c. 16                            e. NIL
b. 4                                                                  d. 32

  8. One milligram is equal to:
a. 0.001 grm.                                                   c. 0.01 grm.                 e. NIL
b. 0.0001 grm.                                                 d. 0.1 grm.

 9. A 10 mgs. % solution contains:
a.       10 mgs of solute/100ml of solution
b.      10 mgs of solute/100 ml of diluent 
c.       10 mgs of solute/1000 ml of diluent
d.      10 mgs of solute/1000ml of solution
e.       NIL

10. A 2 % solution of 10mg/100ml is diluted 1:100. What is the final concentration?
a. 2 %                                                              c. 0.2 %                       e. NIL
b. 0.02 %                                                         d. 0.002 %


Venipuncture Review Questions



1.      When assembling the equipment for venipuncture, this must be the primary consideration:
a.    sterilized  and dry apparatuses                      e. NIL
b.    type of tourniquet
c.    brand of syringe
d.    completely labeled test tubes

2.      These are true in needle and syringe preparation, except:
a.    they must be sterile and dry                          e. NIL
b.    they must not be clogged
c.    the syringe must be disposable
d.    the needle must be fixed firmly into the hub of the syringe

3.      The tourniquet is applied in this manner:
a.    too tight to  make veins prominent                       e. NIL
b.    not too tight nor too loose
c.    loose to avoid hematoma
d.    it does not matter how you apply it


4.      The following may be employed to make veins prominent, except:
a.    opening and closing the fist                      e. NIL
b.    palpating the vein
c.    raising the arm
d.    immersing the arm in warm water

5.      These are true in applying antiseptic  to site of puncture , except:
a.    70 % isopropyl alcohol is used                  e. NIL
b.    cleanse the site in a CIRCULAR manner
c.    allow the site to dry before puncturing
d.    sterilize once

6.      The following techniques are observed in inserting the needle, except:
a.    the ball of the pad of the index finger is placed alongside the hub
b.    the bevel of the needle should be facing upwards
c.    the angle of the needle and syringe should be 45 degrees
d.    the needle should be held in line with the vein
e.    NIL

7.      When withdrawing blood, the following should be observed, except:
a.    when the needle is in the vein, slowly pull back the plunger
b.    keep your eyes on the needle
c.    do not wiggle the needle around
d.    when the needle is accidentally pulled out ,re-enter the vein without removing the tourniquet to ensure non-entry of air
e.    NIL

8.      If blood fails to enter the syringe, the following  may be the reasons, except:
a.    the needle is not in the vein
b.    the needle has not gone far enough
c.    the needle has gone through the vein
d.    the tourniquet was tied too tightly
e.    NIL

9.      In releasing the tourniquet, the following should be observed, except:
a.    before releasing the tourniquet, the fist should be opened
b.    withdraw the needle first, before releasing the tourniquet
c.    pull on either side of the tourniquet to release it
d.    the tourniquet can be released as soon as blood enters the syringe
e.    NIL

10.  The following should be observed when withdrawing the needle, except:
a.    the needle should  be jerked out of the vein very rapidly to minimize pain
b.    the needle should be withdrawn in a smooth gentle motion
c.    an antiseptic pad is applied to the wound
d.    the antiseptic can be  betadine
e.    NIL

11.  In transferring blood to the test tube, the following are observed, except:
a.    hold the plunger so that it does not slip out of  the barrel
b.    remove the needle from the syringe before dispensing blood
c.    let the blood ooze at the sides of the tube
d.    to avoid clotting, dispense rapidly by squirting directly into the test tube
e.    NIL

12.  In cleaning the needle and syringe, the following are observed, except:
a.    if they are  not  disposable (glass), they should be washed immediately
b.    use tap water or distilled water to wash glass syringes
c.    plastic syringes are disposed of properly
d.    needles should not be thrown into  biohazard puncture proof –containers but recapped

13.  Hematoma is the bluish discoloration of the skin which may be due to the following, except:
a.    failure have  the needle completely in the vein
b.    failure to release the tourniquet before withdrawing blood
c.    jerking the needle out of the vein
d.    the needle is withdrawn smoothly
e.    NIL

14.  The following are advantages of venipuncture, except:
a.    good for micro- determinations
b.    large amounts of  blood can be collected
c.    repeated determinations can be done
d.    ideal for blood chemistry determinations
e.    NIL

15.  The following are drawbacks of venipuncture, except:
a.    requires more time, skills and equipment
b.    difficult to perform on infants
c.    requires minute amount of blood which are difficult to collect
d.    many complications can occur
e.    NIL

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