Highlights
- •Continuous fascia iliaca block is an effective method to treat pain in adult trauma patients with hip fracture.
- •The complication rate in patients taking pre-injury anticoagulants or antiplatelet medications however is not well known.
- •We've demonstrated a low rate of infectious or bleeding complications with early use of fascia iliaca block.
- •Fascia iliaca compartment block can safely be considered in these patients.
Abstract
Background
Fascia iliaca compartment block (FICB) is an effective method to treat pain in adult
trauma patients with hip fracture. Of importance is the high prevalence of preinjury
anticoagulants and antiplatelet medications in this population. To date, we have not
identified any literature that has specifically evaluated the safety of FICB with
continuous catheter infusion in patients on antiplatelet and/or anticoagulant therapy.
The purpose of this study is to quantify the complication rate associated with FICB
in patients who are actively taking prescribed anticoagulant and/or antiplatelet medications
prior to injury and identify factors that may predispose patients to an adverse event.
Methods
This retrospective study included consecutive adult trauma patients (age ≥18) with
hip fracture who underwent placement of FICB within 24 h of admission and had been
taking anticoagulant and/or antiplatelet medications pre-injury. Patients were excluded
if their catheter was placed more than 24 h post-hospital admission. Patients were
evaluated for demographics, injury severity, laboratory values, medication history,
receipt of coagulation-related reversal medications, and complications related to
FICB placement. Complications included bleeding at the insertion site requiring catheter
removal and 30-day catheter site infection. The incidence of complications was reported
and risk factors for complications were identified using univariate and multivariate
statistics.
Results
There were 124 patients included. The mean age was 81 ± 10 years, and the most common
mechanism was ground level fall (94%). Most patients were taking single antiplatelet
therapy (65%), followed by anticoagulant alone (21%), combined antiplatelet and anticoagulant
therapy (7.3%) and dual antiplatelet therapy (7.3%). The most common antiplatelet
was aspirin (88%) and the most common anticoagulant was warfarin (60%). Of the patients
taking warfarin, the average INR on admission was 2.3 ± 0.8. Only 1 bleeding complication
(0.8%) was noted in a patient prescribed clopidogrel pre-injury which occurred 5 days
post-catheter placement. This same patient was noted to have superficial surgical
site bleeding most likely secondary to the use of enoxaparin for post-operative deep
venous thrombosis prophylaxis. There were 4 orthopedic superficial surgical site infections
(3.2%), all remote from the catheter site. The pre-injury medication prescribed in
these patients was aspirin 81 mg, aspirin 325 mg, rivaroxaban and dabigatran, respectively.
No factors were associated with a complication thus multivariate analysis was not
performed.
Conclusion
The incidence of complications associated with fascia iliaca compartment block (FICB)
in adult trauma patients prescribed pre-injury anticoagulants or antiplatelet medications
is low. In this retrospective review, we did not identify any complications that were
directly associated with the FICB procedure. Fascia iliaca block with continuous infusion
catheter placement can be safely performed on patients who are on therapeutic anticoagulant
and/or antiplatelet agents.
Graphical abstract

Graphical Abstract
Keywords
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Article info
Publication history
Published online: September 06, 2022
Accepted:
August 24,
2022
Received in revised form:
May 20,
2022
Received:
July 5,
2021
Identification
Copyright
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