Showing posts with label Clinical Chemistry Review Questions. Show all posts
Showing posts with label Clinical Chemistry Review Questions. Show all posts

Thursday, October 2, 2014

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

FIND THE ANSWERS HERE

Tuesday, March 18, 2014

Clinical Chemistry Review Questions - Blood Gas Analysis



CLINICAL CHEMISTRY 2



                 
I            
MULTIPLE CHOICE ( I PT. EACH)
SHADE THE BOX  THAT CORRESPONDS TO THE LETTER OF YOUR CHOICE  (Best answer)  IN THE ANSWER SHEET PROVIDED.

1.     1. The most common specimen for blood gas analysis is:
a.       Plasma                                           c. whole blood            e. arterial blood
b.      Serum                                            d. buffy coat

CASE ANALYSIS

The following lab results were obtained from a 50-year old male patient, complaining of persistent diarrhea for 3 days and rapid respiration : Laboratory results were:
                                                pH = 7.21
                                                pCO2 = 19 mm Hg
                                                PO2 = 96 mm Hg
                                                Total Bilirubin – 25 mg/dL
                                                HCO3 = 7 mmol/L
                                                SO2 = 96 % 
                                                 K Injection:

  1.  What is the patient’s acid-base status? 
a.       Respiratory acidosis
b.      Respiratory alkalosis
c.       Metabolic acidosis
d.      Metabolic alkalosis
e.       all of the above
f.       none of the above

  1. Based on the laboratory results given in question no.2.  Why is the HCO3 level so low?
    1. Because of rapid respiration
    2. Because of persistent diarrhea
    3. Because it compensates the respiratory aspect
    4. A & C
    5. C & D
    6. None of the above
    7. All of the above

  1. Why does the patient have rapid respiration?
    1. To restore normal pH
    2. To decrease pCO2
    3. To restore 20:1 HCO3 to H2CO3 ratio
    4. A & C only
    5. All of the above
    6. none of the above


CHOICES FOR NOS. 5-onwards

EXISTING CONDITION:

A.    UNCOMPENSATED RESPIRATORY ACIDOSIS
B.     UNCOMPENSATED RESPIRTATORY ALKALOSIS
C.     UNCOMPENSATED METABOLIC ACIDOSIS
D.    UNCOMPENSATED METABOLIC ALKALOSIS
E.     PARTIALLY COMPENSATED RESPIRATORY ACIDOSIS
F.      PARTIALLY COMPENSATED RESPIRATORY ALKALOSIS
G.    PARTIALLY COMPENSATED METABOLIC ACIDOSIS
H.    PARTIALLY COMPENSATED METABOLIC ALKALOSIS
I.          FULLY COMPENSATED RESPIRATORY ACIDOSIS
J.          FULLY COMPENSATED RESPIRATORY ALKALOSIS
K.    FULLY COMPENSATED METABOLIC ACIDOSIS
L.     FULLY COMPENSATED METABOLIC ALKALOSIS
M.   NONE OF THE ABOVE

  1. pH= 7.36, HCO3= 23 mmol/L, pCO2= 45 mmHg=M
  2. pH= 7.55, HCO3 = 28 mmol/L, pCO2 = 59 mmHg=H
  3. pH= 7.15, HCO3 = 9 mmol/L, pCO2 = 25 mmHg=G
  4. pH = 7.8, HCO3 = 18 mmol/L, pCO2 = 30 mmHg=F
  5. pH= 7.48, TCO2= 39 mmol/L, pCO2 = 28 mmHg=H
  6. pH= 7.50, HCO3= 25 mmol/L, pCO2 = 18 mmHg=B

CHOICES FOR 66 TO 70

COMPENSATORY MECHANISM:

INDICATE WITH AN ARROW HOW THE SPECIFIC SUBSTANCES  WOULD COMPENSATE IN THE FOLLOWING EXISTING CONDITIONS:

  1. FEVER –RESULTS TO METABOLIC ACIDOSIS – LUNGS WOULD COM[PENSATE- PCO2 INC.EXCRETION, H+ INCREASED EXRETION.
  2. SWEATING –SAME AS NO. 11
  3. ANXIETY –RESULTS TO HYPERVENTILATION CAUSING RESP.ALKALOSIS- KIDNEYS WOULD COMPENSATE BY DECREASING HCO3, H+ RETENTION AND INCREASING EXCRETION,
  4. PHYSICAL EXERTION –SAME AS NO. 13
  5. COPD – MOST CAUSE HYPOVENTILATION CAUSING RESPIRATORY ACIDOSIS, KIDNEYS WOULD COMPENSATE BY INCREASING RETENTION OF HCO3 AND DECREASING ITS EXCRETION, H+ INCREASED EXCRETION.

  1. RESULTS OF LAB TESTS:
          pCO2= 53 mm Hg
          O2 Saturation: 79%
          HCO3= 29 mmol/L

QUESTIONS:
          1. WHAT IS THE PH?-7.36
          2. IDENTIFY THE CONDITION. DEFEND YOUR ANSWER.
          3. WHAT IS THE BODY’S COMPENSATORY MECHANISM?
          4. WHAT ADDITIONAL TEST COULD YOU PERFORM?

ANSWER: FULLY COMPENSATED RESPIRATORY ACIDOSIS.

  1. RESULTS OF LAB TESTS:
TCO2= 27 mmol/L
PCO2= 45 mmHg

QUESTIONS:
          1. WHAT IS THE PH?=7.38
          2. IDENTIFY THE CONDITION. DEFEND YOUR ANSWER.
          3. WHAT IS THE BODY’S COMPENSATORY MECHANISM?
          4. WHAT ADDITIONAL TEST COULD YOU PERFORM?

  1. LABORATORY RESULTS:
pH = 7.27
pCO2= 55 mm Hg
pO2= 50 mm Hg
Hgb = 13.5 g/L
O2 Saturation: 79%
HCO3= 28 mmol/L

QUESTIONS:

1. IDENTIFY THE CONDITION. –PARTIALLY COMPESATED RESPIRATORY ACIDOSIS W/HYPOXIA
2. DEFEND YOUR ANSWER.

  1. LABORATORY RESULTS:
pH = 7.27
pCO2= 58 mm Hg
pO2= 100 mm Hg
Hgb = 13 g/L
O2 Saturation: 98%
HCO3= 23 mmol/L

QUESTIONS:
1. IDENTIFY THE CONDITION. –UNCOMPENSATED RESPIRATORY ACIDOSIS
2. DEFEND YOUR ANSWER

  1. LABORATORY RESULTS:
pH = 7.10
pCO2= 40 mm Hg
pO2= 91 mm Hg
Hgb = 14 g/L
O2 Saturation: 95%
HCO3= 13 mmol/L

QUESTIONS:
1. IDENTIFY THE CONDITION. –UNCOMPENSATED METABOLIC ACIDOSIS
2. DEFEND YOUR ANSWER




Chitika

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