Page 23 - JSOM Fall 2018

Appendix: Pretest Data Collection Sheet

User _______ (number as coded)
Date (DD/MM/YY, e.g., 29/07/17) ____ /____ /____

Before the first test:
1. Assess your confidence (5­point scale) now in successful tourniquet use in care: 1 2 3 4 5

2. Two pools of spilled blood sum to 110 milliliters (mL) in total volume. The first pool is 100 mL more than the second.
How many milliliters is the second? ________ mL

3. After tourniquet use had controlled bleeding, what is the most likely reason bleeding may resume later?
________________________________________________________________________________________________

4. If someone in need of tourniquet use has bled to death, would you regret it more if you were the only potential user
available or instead someone else was the only potential user available?

Myself Someone else
5. A fully open artery has normal flow. When fully closed, there is no flow. When half­closed, how much does it flow?
None Half Normal

6. What is the major factor that increases the likelihood of need for the use of a second tourniquet side­by­side of the
first? ________

7. Shock from bleeding in its most severe degree, Class IV, has four traits: heart rate of >140 beats per minute, decreased
systolic blood pressure, negligible urine output, and blood loss of either a) greater than 2 liters (>2,000 milliliters) or
b) >40% total blood volume. For this individual patient, blood loss of that amount has caused those effects.
True False

8. Reliability is when good (‘Go’) results occur among ≥80% of tests as experience is gained. Experience accrues by test
number: test 1 through test 15. When do you think you will first become reliable (circle a test number from 1 to 15)?
Test # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

9. At which test number do you think you will both become reliable and remain so thereafter?
Test # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

10. Minimal important difference (MID) is the smallest change in a treatment outcome that a patient would identify as
important and which would mandate a change in the patient’s management. What is MID for blood loss volume in
milliliters (mL)? ________ mL

Judgment in Tourniquet Use | 21