Medical
ABG
Scenarios
Odd Man Out
Normal Values
100

TSH, T3, T4

What is Thyroid Labs? 
TSH 0.4–4.0 μU/mL

T4 0.9–1.7 ng/dL
T3 1.5–3.1 nmol/L   

100


  • pH: 7.29 (7.35 – 7.45)
  • PaCO2: 68.2 mmHg (35.2 – 45 mmHg)
  • HCO3–: 26 
  • Base excess: +1 (-2 to +2)

What is Respiratory acidosis?

100

She was brought to the emergency department, where vital signs were notable for temperature of 100.9ºF, HR=142/min, BP=90/60 mmHg after intravenous fluids, with oxygen saturation of 99% while breathing 100% oxygen via non-rebreather mask. She has been complaining of difficulty breathing. 

White blood count   14,600/mm3
Hemoglobin   10.6 g/dL
Platelets   125,000/ mm3

Sodium   134 mmol/L
Potassium   4.6 mmol/L
Chloride   107 mmol/L
Bicarbonate   13 mmol/L
Blood urea nitrogen   45 mg/dL
Creatinine   2.8 mg/dL (baseline 1.5)
Serum glucose   102 mg/dL
Troponin  2.7 ng/mL (upper limit normal = 0.08)
BNP  1,944 pg/mL (upper limit normal = 100-400)

Arterial Blood Gases:
Emergency Room (on 100% oxygen via non-rebreather mask):
pH=7.32
PaCO2=25 mmHg
PaO2=250 mmHg



What is a PE?

100

House Fire Lab

What is carboxyhemoglobin?

100

135-145

Sodium

200

CBC, Hemoglobin, Hematocrit, MCV, Ret Count

What are anemia labs? 

200
  • pH: 7.50 (7.35 – 7.45)
  • PaCO2: 41 mmHg (35.2 – 45 mmHg)
  • HCO3-: 29 (22 – 26 mEq/L)
  • BE: +3 (-2 to +2)

What is Metabolic alkalosis?

200

Eileen Paul is a 54 year old female, admitted to Med-Surg 3 days ago for treatment with IV antibiotics. She was transferred to the ICU yesterday evening after a RRT call for severe hypotension. 

Na: 142 K: 4.2 Cl: 101 HCO3: 20 BUN: 22 Cr: 1.6 Ca: Mg: 2.2 Phos: Glucose: 232 HgA1C: Hgb: 10.9 Hct: 39.3 Plt: 89K 

WBC: 15.7, Lactate: 4.8  CXR: Bilateral patchy infiltrates  

What is Sepsis?

200

This low lab has the potential to cause torsades

What is Magnesium?

200

<500 (Heart Lab)

What is BNP? 

300

Measure of the percentage of RBC in total blood volume (cell volume)

What does Hematocrit measure?

300
  • pH: 7.30 (7.35 – 7.45)
  • PaCO2: 63 mmHg (35.2 – 45 mmHg)
  • HCO3-: 29 (22 – 26 mEq/L)
  • BE: +4 (-2 to +2)

What is respiratory acidosis with metabolic compensation?

300

64 y.o. woman admitted with pancreatitis secondary to EtOH. Known liver cirrhosis (moderate, Child-Pugh B). Not on any regular medications, no allergies. Coughing up blood.  

Hemoglobin (g/L) 72 Platelets (x109 /L) 58 INR 2.2 Fibrinogen (g/L) 1.6 Lactate 3.0 PH 7.34

What is a GI bleed?

300

Elevated Bun/Creat, INR increased, PTT increased, D Dimer Increased. Known lab findings on what time of exposure

What is Dinosaurs?   SNAKE BITES! 

300

0.6-1.2 (kidney)

What is Creatinine?

400

3.5-5.0mEq/L

Will bite you on a renal patient in a hurry

What is potassium?

400
  • pH: 7.29 (7.35 – 7.45)
  • PaCO2: 41.2 mmHg (35.2 – 45 mmHg)
  • HCO3-: 15 (22 – 26 mEq/L)
  • BE: – 4 (-2 to +2)

What is Metabolic acidosis?

400

A 82-year-old female client is admitted to medical-surgical unit with dehydration and new onset of incontinence (pink-tinged urine) and mild confusion

BUN 27

Creatinine (serum) 1.3

WBC  11.1

Potassium (serum) 3.6

Sodium (serum) 143

Urine analysis         4+ bacteriuria

        WBC >10,

        + hematuria

        Lactate 1.2


What is a UTI? 

400

Pregnant Mom:

  • Hemolysis, which is the breakdown of red blood cells 
  • Elevated liver enzymes, which can indicate liver damage 
  • Low platelet count, which can lead to serious bleeding

What is HELP syndrome?

400

<2 (Infection/Acidosis)

What is Lactate? 
500

PT, PTT, INR should be pulled on what type of patients

Circulatory/hematologic System primarily, Bleeding patients

500
  • pH: 7.51 (7.35 – 7.45)
  • PaCO2: 23.2 mmHg (35.2 – 45 mmHg)
  • HCO3-: 23 (22 – 26 mEq/L)
  • BE: 0 (-2 to +2)

What is Respiratory alkalosis ?

500

Patient comes in complaining of chest pain. Has widened out EKG. Past history of HTN, CHF.

Bun 60, Creat 3, Potassium 7.8

What is renal failure? 

500

lab for blood clotting problems
Non Specific 

D-Dimer 

500

Blood Glucose for pediatric

>70

Infants: >40

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