NCLEX questions-Laboratory Values With
Correct Answers
A |client |with |atrial |fibrillation |who |is |receiving |maintenance |therapy |of |warfarin |sodium |
(Coumadin) |has |a |prothrombin |time |(PT) |of |35 |seconds. |On |the |basis |of |the |PT, |the |nurse |
anticipates |which |prescription?
1. |Adding |a |dose |of |heparin |sodium
2. |Holding |the |next |dose |of |warfarin
3. |Increasing |the |next |dose |of |warfarin
4. |Administering |the |next |dose |of |warfarin |- |CORRECT |ANSWER✔✔-2. |Rationale- |The |normal |
PT |is |9.6 |to |11.8 |seconds |(male |adult) |or |9.5 |to |11.3 |seconds |(female |adult). |A |therapeutic |PT |
level |is |1.5 |to |2 |times |higher |than |the |normal |level. |Because |the |value |of |35 |seconds |is |high |( |
and |perhaps |near |the |critical |range), |the |nurse |should |anticipate |that |the |client |would |not |
receive |further |doses |at |this |time. |Therefore |the |prescription |noted |in |the |remaining |options |
are |incorrect.
The |nurse |checks |the |laboratory |result |for |a |serum |digoxin |level |that |was |prescribed |for |a |
client |earlier |in |the |day |and |notes |that |the |result |is |2.4 |ng/mL. |The |nurse |should |take |which |
immediate |action?
1. |Check |the |client's |last |pulse |rate
2. |Notify |the |health |care |provider
3. |Record |the |normal |value |on |the |client's |flow |sheet
4. |Administer |the |next |dose |of |the |medication |as |scheduled |- |CORRECT |ANSWER✔✔-
2.Rationale- |The |normal |therapeutic |range |for |digoxin |is |0.5 |to |2 |ng/mL. |A |level |of |2.4 |ng/mL |
exceeds |the |therapeutic |range |and |indicates |toxicity. |The |nurse |should |notify |the |HCP, |who |
may |give |further |prescriptions |about |holding |further |doses |of |digoxin. |The |option |that |
indicates |to |record |the |normal |value |on |the |client's |flow |sheet |is |incorrect |because |the |level |is
|not |normal. |The |next |dose |should |not |be |administered |because |the |serum |digoxin |level |
exceeds |the |therapeutic |range. |Checking |the |client's |last |pulse |rate |may |have |limited |value |in |
, this |situation. |Depending |on |the |time |that |has |elapsed |since |the |last |assessment, |a |current |
assessment |of |the |client's |status |may |be |more |useful.
A |client |has |been |admitted |to |the |hospital |for |urinary |tract |infection |and |dehydration. |The |
nurse |determines |that |the |client |has |received |adequate |volume |replacement |if |the |blood |urea
|nitrogen |level |drops |to |which |value?
1. |3 |mg/dL
2. |15 |mg/dL
3. |29 |mg/dL
4. |35 |mg/dL |- |CORRECT |ANSWER✔✔-2. |Rationale-The |normal |blood |urea |nitrogen |level |is |8 |to
|25 |mg/dL. |Values |of |29 |mg/dL |and |35 |mg/dL |reflect |continued |dehydration. |A |value |of |3 |
mg/dL |reflects |a |lower |than |normal |value, |which |may |occur |with |fluid |volume |overload, |
among |other |conditions.
A |client |arrives |in |the |emergency |department |complaining |of |chest |pain |that |began |4 |hours |
ago. |A |troponin |T |blood |specimen |is |obtained |and |the |results |indicate |a |level |of |0.6 |ng/mL. |
The |nurse |determines |that |this |result |indicates |which |finding?
1. |A |normal |level |
2. |A |low |value |that |indicates |possible |gastritis
3. |A |level |that |indicates |a |myocardial |infarction
4. |A |level |that |indicates |the |presence |of |possible |angina |- |CORRECT |ANSWER✔✔-3. |Rationale- |
Troponin |is |a |regulatory |protein |found |in |striated |muscle. |The |troponins |function |together |in |
the |contractile |apparatus |for |muscle |in |skeletal |muscle |and |in |the |myocardium. |Increased |
amounts |of |troponins |are |released |into |the |bloodstream |when |an |infarction |causes |damage |to
|the |myocardium. |A |troponin |T |value |that |is |higher |than |0.1 |to |0.2 |ng/mL |is |consistent |with |a |
myocardial |infarction. |A |normal |troponin |I |level |is |lower |than |0.6 |ng/mL.
A |client |is |receiving |a |continuous |intravenous |infusion |of |heparin |sodium |to |treat |deep |vein |
thrombosis. |The |client's |activated |partial |thromboplasm |(aPTT) |time |is |65 |seconds. |The |nurse |
anticipates |that |which |action |is |needed?
1. |Discontinuing |the |heparin |infusion |
Correct Answers
A |client |with |atrial |fibrillation |who |is |receiving |maintenance |therapy |of |warfarin |sodium |
(Coumadin) |has |a |prothrombin |time |(PT) |of |35 |seconds. |On |the |basis |of |the |PT, |the |nurse |
anticipates |which |prescription?
1. |Adding |a |dose |of |heparin |sodium
2. |Holding |the |next |dose |of |warfarin
3. |Increasing |the |next |dose |of |warfarin
4. |Administering |the |next |dose |of |warfarin |- |CORRECT |ANSWER✔✔-2. |Rationale- |The |normal |
PT |is |9.6 |to |11.8 |seconds |(male |adult) |or |9.5 |to |11.3 |seconds |(female |adult). |A |therapeutic |PT |
level |is |1.5 |to |2 |times |higher |than |the |normal |level. |Because |the |value |of |35 |seconds |is |high |( |
and |perhaps |near |the |critical |range), |the |nurse |should |anticipate |that |the |client |would |not |
receive |further |doses |at |this |time. |Therefore |the |prescription |noted |in |the |remaining |options |
are |incorrect.
The |nurse |checks |the |laboratory |result |for |a |serum |digoxin |level |that |was |prescribed |for |a |
client |earlier |in |the |day |and |notes |that |the |result |is |2.4 |ng/mL. |The |nurse |should |take |which |
immediate |action?
1. |Check |the |client's |last |pulse |rate
2. |Notify |the |health |care |provider
3. |Record |the |normal |value |on |the |client's |flow |sheet
4. |Administer |the |next |dose |of |the |medication |as |scheduled |- |CORRECT |ANSWER✔✔-
2.Rationale- |The |normal |therapeutic |range |for |digoxin |is |0.5 |to |2 |ng/mL. |A |level |of |2.4 |ng/mL |
exceeds |the |therapeutic |range |and |indicates |toxicity. |The |nurse |should |notify |the |HCP, |who |
may |give |further |prescriptions |about |holding |further |doses |of |digoxin. |The |option |that |
indicates |to |record |the |normal |value |on |the |client's |flow |sheet |is |incorrect |because |the |level |is
|not |normal. |The |next |dose |should |not |be |administered |because |the |serum |digoxin |level |
exceeds |the |therapeutic |range. |Checking |the |client's |last |pulse |rate |may |have |limited |value |in |
, this |situation. |Depending |on |the |time |that |has |elapsed |since |the |last |assessment, |a |current |
assessment |of |the |client's |status |may |be |more |useful.
A |client |has |been |admitted |to |the |hospital |for |urinary |tract |infection |and |dehydration. |The |
nurse |determines |that |the |client |has |received |adequate |volume |replacement |if |the |blood |urea
|nitrogen |level |drops |to |which |value?
1. |3 |mg/dL
2. |15 |mg/dL
3. |29 |mg/dL
4. |35 |mg/dL |- |CORRECT |ANSWER✔✔-2. |Rationale-The |normal |blood |urea |nitrogen |level |is |8 |to
|25 |mg/dL. |Values |of |29 |mg/dL |and |35 |mg/dL |reflect |continued |dehydration. |A |value |of |3 |
mg/dL |reflects |a |lower |than |normal |value, |which |may |occur |with |fluid |volume |overload, |
among |other |conditions.
A |client |arrives |in |the |emergency |department |complaining |of |chest |pain |that |began |4 |hours |
ago. |A |troponin |T |blood |specimen |is |obtained |and |the |results |indicate |a |level |of |0.6 |ng/mL. |
The |nurse |determines |that |this |result |indicates |which |finding?
1. |A |normal |level |
2. |A |low |value |that |indicates |possible |gastritis
3. |A |level |that |indicates |a |myocardial |infarction
4. |A |level |that |indicates |the |presence |of |possible |angina |- |CORRECT |ANSWER✔✔-3. |Rationale- |
Troponin |is |a |regulatory |protein |found |in |striated |muscle. |The |troponins |function |together |in |
the |contractile |apparatus |for |muscle |in |skeletal |muscle |and |in |the |myocardium. |Increased |
amounts |of |troponins |are |released |into |the |bloodstream |when |an |infarction |causes |damage |to
|the |myocardium. |A |troponin |T |value |that |is |higher |than |0.1 |to |0.2 |ng/mL |is |consistent |with |a |
myocardial |infarction. |A |normal |troponin |I |level |is |lower |than |0.6 |ng/mL.
A |client |is |receiving |a |continuous |intravenous |infusion |of |heparin |sodium |to |treat |deep |vein |
thrombosis. |The |client's |activated |partial |thromboplasm |(aPTT) |time |is |65 |seconds. |The |nurse |
anticipates |that |which |action |is |needed?
1. |Discontinuing |the |heparin |infusion |
