Lab Values

Question 1

HRmax (NOT on a beta-blocker)

Answer 1

HRmax = 206.9 - (0.67 x age)

Question 2

HRmax (ON a beta-blocker)

Answer 2

HRmax = 164 - (0.70 x age)

Question 3

Heart Rate Reserve

Answer 3

HRR = HRmax - HRrest

Question 4

Karvonen Formula

Answer 4

a formula used to calculate the target heart rate for aerobic training

HR = HRrest + ( __% of HRR)

Question 5

White Blood Cell (WBC)

Answer 5

5,000 - 10,000 mm^3

Question 6

Hemoglobin (Hgb)

Answer 6

Men = 14 - 17.4 g/dL
Women = 12 - 16 g/dL

Question 7

Hematocrit (Hct)

Answer 7

Men = 41% - 53%
Women = 37% - 47%

Question 8

Platelets

Answer 8

150,000 - 350,000 mm^3

Question 9

What are the 5 types of WBCs?

Answer 9

1. neutrophils (bacteria)
2. eosinophils (allergy)
3. basophils (allergy)
4. lymphocytes (viral, TB, fungal)
5. monocytes (phagocytosis)

“Never Let Monkeys Eat Bananas”

Question 10

Neutrophils greater than 58% likely indicates:

Answer 10

an infection is present

Question 11

What lab values indicate the patient is at an increased risk of infection?

Answer 11

WBCs = < 3,000

< 40% of WBCs

Question 12

Exercise Guidelines for WBCs Values

Answer 12

< 5,000 = no exercise

> 5,000 = light or resisted exercise as tolerated

Question 13

Red Blood Cells (RBCs)

Answer 13

Men = 4.2 - 5.4 x 10/mm3
Women = 3.6 - 5.0 x 10/mm3

Question 14

Exercise Guidelines for Hematocrit

Answer 14

< 25% = no exercise
> 25% = light exercise
> 30% = resistive exercise

Question 15

Exercise Guidelines for Hemoglobin

Answer 15

<8 gm/dL = no exercise
8-10 gm/dL = light exercise
>10 gm/dL = resistive exercise

Question 16

Thrombocytopenia

Answer 16

can result from decreased production of platelets OR increased destruction of platelets

< 20,000 mm3 may have bleeding problems
(i.e. trauma, surgery, or arterial punctures)

Patients with platelets < 5,000/mm3 are at an increased risk for spontaneous internal hemorrhage

Question 17

Exercise Guidelines for Platelets

Answer 17

< 20,000 = therapy/exercise contraindicated
20,000 - 30,000 = light exercise
30,000 - 50,000 = AROM, walking, etc.
50,000 - 140,000 = low intensity resistive/aerobic exercise

Question 18

Prothrombin time (PT)

Answer 18

11 - 13.5 seconds

Question 19

Partial thromboplastin time (PTT)

Answer 19

30 - 45 seconds

Question 20

International Normalization Ration (INR)

Answer 20

0.8 - 1.2

Question 21

Exercise Guidelines for INR

Answer 21

< 3.5 - 4.0 = PT/OT with precautions
> 5.0 = hold resistive exercise; okay to ambulate if safe
>6.0 = bed rest; ambulate on level surface (no stairs, resistive exercise, etc.)

Question 22

Na+

Answer 22

135 - 148 mmol/L

Question 23

K+

Answer 23

3.5 - 5.0 mmol/L

Question 24

Cl-

Answer 24

95 - 108 mmol/L

Question 25

HCO3-

Answer 25

22-26 mmol/L

Question 26

BUN

Answer 26

10 - 20 mg/dL

Question 27

Creatinine

Answer 27

0.7 - 1.3 mg/dL

Question 28

Glucose

Answer 28

70 - 115 mg/100mL

Question 29

Exercise Guidelines for Glucose

Answer 29

< 70 = hypoglycemic; no exercise
80 - 120 = normal; ideal
>250 and no ketones = exercise and monitor
>250 and ketones = no exercise
>400 = diabetic ketoacidosis; no exercise