Ace Your Critical Care Nursing Classes and Exams with Picmonic: #1 Visual Mnemonic Study Tool for Nursing (RN) Students

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Critical Care Nursing Nursing (RN) School Study Aid


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Lab Values
32 Picmonics to Learn | 32 mins

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Normal Electrolyte Lab Values
Potassium (K+)
3.5 to 5.0 mEq/L
Calcium (Ca2+)
8.5 to 10.5 mg/dL
Phosphate (PO43–)
2.5 to 4.5 mg/dL
Magnesium (Mg2+)
1.5 to 2.5 mEq/L
Sodium (Na+)
135 to 145 mEq/L
Chloride (Cl)
95 to 105 mEq/L
1 min
Potassium (K+) Lab Value
3.5 to 5.0 mEq/L
20 secs
Sodium (Na+) Lab Value
135-145 mEq/L
24 secs
Chloride (Cl-) Lab Value
95-105 mEq/L
27 secs
Calcium (Ca2+) Lab Value
8.5 to 10.5 mg/dL
25 secs
Phosphate (PO43-) Lab Value
2.5 to 4.5 mg/dL
29 secs
Magnesium (Mg2+) Lab Value
1.5 to 2.5 mEq/L
28 secs
BUN (Blood Urea Nitrogen) Lab Values
10-20 mg/dL
40 secs
Creatinine Lab Values
Measures Renal Function
0.6 - 1.3 mg/dL
1 min
Bilirubin Lab Value
0.2-1.2 mg/dL
Increased Bilirubin Causes Jaundice
54 secs
Albumin Lab Value
3.5 - 5.0 g/dL
42 secs
Total Protein Lab Values
6.4 - 8.3 g/dL
1 min
Liver Enzyme Tests: AST and ALT
AST/ALT Ratio
AST: 10-30 U/L
ALT: 10-40 U/L
1 min
WBC Differential Lab Value
White Blood Cells (WBC)
5-10 (5,000-10,000)
Leukocyte Differential
Neutrophils (50%-70%)
Bands (2%-5%)
Segs (50%-70%)
Lymphocytes (20%-40%)
Monocytes (4%-8%)
Eosinophils (2%-4%)
Basophils (0.5%-1.5%)
1 min
Red Blood Cell Count (RBC) Lab Values
Women: 3.5-5.5 million cells/ MuL
Men: 4.3-5.9  million cells/ MuL
1 min
Hemoglobin (Hgb) Lab Values
Men: 13 - 17 g/dL
Women: 12 - 16 g/dL
46 secs
Hematocrit (Hct) Lab Values
Men: 40% - 54%
Women: 35% - 47%
1 min
PT/PTT Lab Values
Prothrombin Time (PT)
10-14 seconds
Activated Partial Thromboplastin Time (PTT or aPTT)
25-35 seconds
1 min
INR Lab Value
0.8-1.2 Normal Range
Warfarin
2.0-3.0
1 min
Platelet Lab Value
150,000-400,000 Micro L
40 secs
Bleeding Time Lab Values
2-7 Minutes
40 secs
pH - Blood and Urine Lab Value
Blood
7.35 - 7.45
Urine
4.0 - 8.0
1 min
Urine Specific Gravity Lab Value
1.003-1.030
1 min
Blood Glucose Lab Value
70-100 mg/dL
25 secs
Hemoglobin A1c Lab Value
4-6%
1 min
Cholesterol Lab Values
LDL (Low Density Cholesterol)
< 100 mg/dL
HDL (High Density Cholesterol)
> 40 mg/dL Males
> 50 mg/dL Females
Total Cholesterol
< 200 mg/dL
1 min
Triglycerides Lab Value
< 150 mg/dL
50 secs
Troponin Lab Values
Troponin T (cTnT)
< 0.1 ng/mL Normal
Troponin I (cTnI)
< 0.5 ng/mL Normal
> 2.3 ng/mL Myocardial Injury
1 min
Cardiac Enzyme Evaluation: Myoglobin
Measures
Skeletal or Cardiac Muscle Injury
Time Ranges
Onset: 1 - 4 Hours
Peak: 12 Hours
Return to Normal: 24 Hours
Considerations
Elevation After 24 Hours: Reinfarction
1 min
Cardiac Enzyme Evaluation: Troponin
Measures
Cardiac Muscle Injury
Time Ranges
Onset: 1 Hour
Peak: 10 - 24 Hours
Return to Normal: 5 - 14 Days
Considerations
Most Specific for Cardiac Muscle
Treated Aggressively
1 min
Cardiac Enzyme Evaluation: Creatine Kinase CK-MB
Measures
Skeletal or Cardiac Muscle Injury
Time Ranges
Onset: 4-8 Hours
Peak: 12-24 Hours
Return to Normal: 2-3 Days
1 min
CSF Lab Values: Normal
Pressure: < 20 cm H2O
Color/Appearance: Clear or Colorless
Proteins: < 40 mg/dL
Lactate Dehydrogenase: 10% of Serum Level
Cells: 0-5 Small Lymphocytes
Glucose: 40-70 mg/dL
1 min

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