Patient comes with shaft of femur fracture. Bp is low should I give iv

Patient comes with shaft of femur fracture. Bp is low should I give iv ns first then groin to toe slab or give slab first then ns

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femur fracture hemorrhagic shock fluid resuscitation splint

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femur shaft fracture hypotension management ATLS fluid resuscitation splint priority

Here is a clear, evidence-based answer to this classic orthopaedic emergency question:

Femur Shaft Fracture + Low BP: What Comes First?

The short answer: Both simultaneously, but circulation takes first priority

This is not an either/or situation. ATLS principles apply - you run resuscitation and immobilization in parallel if you have hands available. But if forced to choose a single first action, start IV access and fluids immediately.

Why this order?

1. A femur shaft fracture can lose 1-1.5 litres of blood

The thigh has a large muscular compartment. A closed femoral shaft fracture alone can cause up to 1,000-1,500 mL of blood loss into the thigh, enough for Class II-III hemorrhagic shock (per ATLS classification). This is a significant contributor to the low BP you're seeing.

Important caveat: Recent evidence shows that an isolated femoral shaft fracture alone rarely causes true Class III hypotension (systolic BP <90 mmHg) in healthy adults. If the patient is significantly hypotensive, always look for other sources - pelvic fracture, intra-abdominal bleeding, hemothorax, etc. Don't assume the femur is the only culprit.

2. The ATLS sequence: C-A-B-C-D-E

Per ATLS protocol, Circulation (controlling hemorrhage + resuscitation) comes before definitive orthopaedic management. The textbook principle from Rockwood and Green's (2025 edition) is explicit: "The acute treatment and resuscitation of hemorrhagic shock takes priority over fracture management."

3. Splinting itself helps reduce bleeding

This is the key reason you do BOTH together:

Immobilization of the fracture fragments with a Thomas splint / groin-to-toe POP slab reduces movement at the fracture site
Reduced movement = less ongoing bleeding from the fracture haematoma
Traction splinting can decrease the thigh's internal volume and tamponade bleeding
So splinting is not just an orthopaedic step - it is also a hemorrhage control step

Practical ED Protocol

Step	Action	Priority
1	Call for help, two large-bore IV lines	Immediate
2	Draw blood (CBC, cross-match, coagulation, metabolic panel)	Simultaneous
3	Start IV crystalloid (NS or RL) / blood products if indicated	Immediate
4	Apply groin-to-toe backslab OR Thomas splint with traction	As soon as another person is available - do not delay fluids for this
5	Pain relief - femoral nerve block / IV analgesia	Alongside the above
6	Full ATLS primary survey - look for other bleeding sources	Do not skip
7	Reassess BP after resuscitation	Before moving to definitive care

Key Points to Remember

Do not delay IV access and fluids to apply the slab. Seconds matter in hemorrhagic shock.
Do not skip splinting thinking it is just a comfort measure. It reduces ongoing blood loss.
In a busy ED/casualty with two providers: one starts IV fluids while the other applies the splint - simultaneous is ideal.
If hemodynamically unstable after adequate resuscitation, look beyond the femur (rule out pelvis, abdomen, chest).
Definitive surgical fixation (IMN) should be delayed until the patient is adequately resuscitated.
Per Medscape ATLS guidelines: "if the patient is hemodynamically unstable and has not been adequately resuscitated, femoral fixation should be delayed and temporized with external fixator, skeletal traction, or a splint."

Bottom Line

IV access + fluids FIRST (this takes 30-60 seconds and is immediately life-saving), then splint immediately after (or simultaneously if hands allow). Both must happen before the patient moves anywhere. The Royal Children's Hospital clinical guideline recommends ATLS assessment first, then immobilization with skin traction/Thomas splint as the standard ED approach.

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