Ultrasound-guided Femoral Nerve Blocks in Elderly Patients With Hip Fractures
Status:
Completed
Trial end date:
2012-02-01
Target enrollment:
Participant gender:
Summary
The purpose of this study is to determine if ultrasound guided femoral nerve blocks
(localized anesthesia in the upper thigh) provide effective pain relief in adult patients
with hip fractures in the emergency department and to determine if femoral nerve blocks can
then be used to reduce the use of injected analgesia (anesthesia), therefore also causing
fewer adverse effects associated with injected analgesia (such as bruising at the site of
injection).
100 patients with hip fractures will be enrolled in the study. Patients will be randomly
assigned to receive a femoral nerve block (FNB) plus injected analgesia or standard care
(SC), which is injected analgesia alone.
Using guidance from an ultrasound machine, the FNB group will have 20ml of 0.5% bupivacaine
(a local anesthetic of long duration) injected into the front of the thigh, at the site of
pain. Patients randomized to the SC group will receive an injection of saline (saltwater) so
that no neither the patient or the treating physician knows to which group the patient was
randomized. All blocks will be performed in the emergency department by an emergency
physician trained in the use of ultrasound and ultrasound guided nerve blocks.
Subjects will be asked to rate their pain on a numeric pain scale both before and after
intervention (30 min, 60 min, 12 hrs and 24 hrs after injection, as long as the patient is in
the ER still). Additional data to be collected includes demographics, vital signs, and course
of treatment resulting from the ED visit.
Hypothesis: US-guided femoral nerve blocks can provide effective pain control and possibly
decrease or eliminate the need for narcotics.