C HAPTER 19: C ALCULATING I NPUT AND
O UTPUT
Castillo: Calculating Drug Dosages: A Patient -Safe Approach to Nursing
and Math 2nd Edition
MULTIPLE CHOICE
1. For breakfast, the patient takes 2 T bs of gelatin, drinks a 6 oz cup of
coffee, and 120 mL of orange juice. For lunch, the patient drinks 180 mL
of milk and eats a small container (3 oz) of ice cream. What is the oral
intake for the 0700 -1500 shift?
A. 620 m L
B. 600 m L
C. 570 m L
D. 550 m L
ANS: B
Feedback
To calculate intake, convert all measurements to mL. In this problem,
use the household to metric equivalent measurements of 1 Tbs = 30
mL, 1 oz = 30 m L. Add (2 Tbs) 30 m L, (6 oz) 180 mL, 120 m L, 180
mL, and (3 oz) 90 mL. Total intake is 600 mL.
2. For the 0700-1500 shift, the patient drinks 240 m L of coffee, 60 m L of
milk, and 120 mL of apple juice at breakfast. For lunch, the patient takes
, 8 oz of broth and drinks 10 oz of water for the shift. What is the total
intake for the 0700 -1500 shift?
A. 660 m L
B. 700 m L
C. 900 m L
D. 960 m L
ANS: D
Feedback
To calculate intake, convert all measurements to mL. In this problem,
use the household to metric equivalent measurements of 1 oz = 30 m L.
Add 240 mL, 60 m L, 120 mL, (8 oz) 240 mL, and (10 oz) 300 mL.
Total intake is 960 mL.
3. The RN reads the Intake and Output form posted at the patient’s bedside
for the 7 to 3 shift. The form is used by the staff to list the patient’s
intake throughout the shift before documenting the total intake in the
patient’s electronic medical re cord.
7-3 Intake (mL)
6 oz 180
=
4 oz 120
=
3 tsp 30
=
2 tbs 30
=
, Water 200
=
The nurse is most correct to question which of the following
measurement?
A. 4 oz = 120 (m L)
B. 3 tsp = 30 (mL)
C. 2 tbs = 30 (mL)
D. Water = 200 (m L)
ANS: B
Feedback
The nurse is correct to question 3 tsp = 30 (m L) measurement. The
household to metric equivalent measurement is 1 tsp = 5 mL; therefore
3 tsp = 15 mL. All the other equivalent measurements are correct.
4. For dinner, the patient drank 200 mL of juice, 120 mL of milk, and 240
mL of coffee. At bedtime, the patient had 8 oz of warm milk. What is the
recorded intake for the 1500 -2300 shift?
A. 660 m L
B. 760 m L
C. 800 m L
D. 900 m L
ANS: C
Feedback
, To calculate intake, convert all measurements to mL. In this problem,
use the household to metric equivalent measurements of 1 oz = 30 m L.
Add 200 mL, 120 mL, 240 mL, and (8 oz) 240 m L. Total intake is 800
mL.
5. The RN reads the Intake and Output form posted at the patient’s bedside
for the 7 to 3 shift. The form is used by the staf f to list the patient’s
intake throughout the shift before entering the total intake in the patient’s
electronic medical record.
7-3 Intake
(mL)
3 oz = 90
8 oz = 240
4 Tbs = 50
Water = 350
When reviewing the patient’s intake, which measurement should the nurse
query?
A. 3 oz = 90 (mL)
B. 8 oz = 240 (m L)
C. 4 Tbs = 50 (mL)
D. Water = 350 (m L)
ANS: C
Feedback
The nurse is correct to question 4 Tbs = 50 (m L) measurement. The
household to metric equivalent measurement is 1 Tbs = 15 m L;
O UTPUT
Castillo: Calculating Drug Dosages: A Patient -Safe Approach to Nursing
and Math 2nd Edition
MULTIPLE CHOICE
1. For breakfast, the patient takes 2 T bs of gelatin, drinks a 6 oz cup of
coffee, and 120 mL of orange juice. For lunch, the patient drinks 180 mL
of milk and eats a small container (3 oz) of ice cream. What is the oral
intake for the 0700 -1500 shift?
A. 620 m L
B. 600 m L
C. 570 m L
D. 550 m L
ANS: B
Feedback
To calculate intake, convert all measurements to mL. In this problem,
use the household to metric equivalent measurements of 1 Tbs = 30
mL, 1 oz = 30 m L. Add (2 Tbs) 30 m L, (6 oz) 180 mL, 120 m L, 180
mL, and (3 oz) 90 mL. Total intake is 600 mL.
2. For the 0700-1500 shift, the patient drinks 240 m L of coffee, 60 m L of
milk, and 120 mL of apple juice at breakfast. For lunch, the patient takes
, 8 oz of broth and drinks 10 oz of water for the shift. What is the total
intake for the 0700 -1500 shift?
A. 660 m L
B. 700 m L
C. 900 m L
D. 960 m L
ANS: D
Feedback
To calculate intake, convert all measurements to mL. In this problem,
use the household to metric equivalent measurements of 1 oz = 30 m L.
Add 240 mL, 60 m L, 120 mL, (8 oz) 240 mL, and (10 oz) 300 mL.
Total intake is 960 mL.
3. The RN reads the Intake and Output form posted at the patient’s bedside
for the 7 to 3 shift. The form is used by the staff to list the patient’s
intake throughout the shift before documenting the total intake in the
patient’s electronic medical re cord.
7-3 Intake (mL)
6 oz 180
=
4 oz 120
=
3 tsp 30
=
2 tbs 30
=
, Water 200
=
The nurse is most correct to question which of the following
measurement?
A. 4 oz = 120 (m L)
B. 3 tsp = 30 (mL)
C. 2 tbs = 30 (mL)
D. Water = 200 (m L)
ANS: B
Feedback
The nurse is correct to question 3 tsp = 30 (m L) measurement. The
household to metric equivalent measurement is 1 tsp = 5 mL; therefore
3 tsp = 15 mL. All the other equivalent measurements are correct.
4. For dinner, the patient drank 200 mL of juice, 120 mL of milk, and 240
mL of coffee. At bedtime, the patient had 8 oz of warm milk. What is the
recorded intake for the 1500 -2300 shift?
A. 660 m L
B. 760 m L
C. 800 m L
D. 900 m L
ANS: C
Feedback
, To calculate intake, convert all measurements to mL. In this problem,
use the household to metric equivalent measurements of 1 oz = 30 m L.
Add 200 mL, 120 mL, 240 mL, and (8 oz) 240 m L. Total intake is 800
mL.
5. The RN reads the Intake and Output form posted at the patient’s bedside
for the 7 to 3 shift. The form is used by the staf f to list the patient’s
intake throughout the shift before entering the total intake in the patient’s
electronic medical record.
7-3 Intake
(mL)
3 oz = 90
8 oz = 240
4 Tbs = 50
Water = 350
When reviewing the patient’s intake, which measurement should the nurse
query?
A. 3 oz = 90 (mL)
B. 8 oz = 240 (m L)
C. 4 Tbs = 50 (mL)
D. Water = 350 (m L)
ANS: C
Feedback
The nurse is correct to question 4 Tbs = 50 (m L) measurement. The
household to metric equivalent measurement is 1 Tbs = 15 m L;
