Circulatory Case Study 5
Mr. Hutchinson, a 41
year-old otherwise, healthy male was involved in a traffic collision on
Interstate 880 in Oakland. He was
brought to the Children’s Hospital of Oakland emergency room unconscious
with a tourniquet around his left thigh.
The paramedic on scene said that he was thrown out of his vehicle and
his left leg was pinned beneath his car for at least 30 minutes. He has lost a fair amount of blood but
currently all hemorrhaging has been stopped. The attending ER doctor noted the following before sending
Mr. Hutchinson to the emergency operating room:
- Patient diaphoretic (sweaty)
- Multiple contusions of lower limbs
- Compound fracture of right ulna, bone ends
covered in sterile gauze
- Left leg blanched and cold, no pulse
- Blood pressure 90 / 48
- Pulse 140 bpm
- Trace a drop of blood from the
heart to the body and back to the heart.
Distinguish between arteries, veins and capillaries both functionally and
- Describe the composition and
functions of blood.
- Compare and contrast artery,
vein and capillary structure. Include locations and functions of each type
of blood vessel.
- Why would the patient be diaphoretic after the
- Describe the body’s mechanisms that are attempting
to maintain blood pressure in the face of blood loss.
- Relative to tissue requirements for oxygen, what
is the condition of Mr. Hutchinson’s left leg?
- Will the fracture be attended to first, or will
Mr. Hutchinson’s other homeostatic needs take priority? Explain your choice and predict his
- What do you conclude regarding Mr. Hutchinson’s
cardiovascular measurements (pulse and BP), and what measures should be
taken prior to surgery?