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Ergonomic task analysis of ultrasound-guided femoral nerve block: a pilot study.
Ajmal, Muhammad Power, Susan Smith, Tim Shorten, George D
Ajmal, Muhammad
Power, Susan
Smith, Tim
Shorten, George D
Advisors
Editors
Other Contributors
Date
2011-02
Date Submitted
Keywords
Other Subjects
Subject Mesh
Aged
Body Height
Data Interpretation, Statistical
Environment
Female
Femoral Nerve
Femur
Hip
Human Engineering
Humans
Knee
Male
Middle Aged
Nerve Block
Pilot Projects
Posture
Questionnaires
Task Performance and Analysis
Body Height
Data Interpretation, Statistical
Environment
Female
Femoral Nerve
Femur
Hip
Human Engineering
Humans
Knee
Male
Middle Aged
Nerve Block
Pilot Projects
Posture
Questionnaires
Task Performance and Analysis
Planned Date
Start Date
Collaborators
Principal Investigators
Alternative Titles
Publisher
Abstract
To apply ergonomic task analysis to the performance of ultrasound-guided (US-guided) femoral nerve block (FNB) in an acute hospital setting.
Pilot prospective observational study.
Orthopedic operating room of a regional trauma hospital.
15 anesthesiologists of various levels of experience in US-guided FNB (estimated minimum experience < 10 procedures; maximum about 50 procedures, and from basic trainees to consultants); and 15 patients (5 men and 10 women), aged 77 ± 15 (mean ± SD yrs) years. MEASUREMENTS/OBSERVATIONS: A data capture "tool", which was modified from one previously developed for ergonomic study of spinal anesthesia, was studied. Patient, operator, and heterogeneous environmental factors related to ergonomic performance of US-guided FNB were identified. The observation period started immediately before commencement of positioning the patient and ended on completion of perineural injection. Data were acquired using direct observations, photography, and application of a questionnaire.
The quality of ergonomic performance was generally suboptimal and varied greatly among operators. Eight (experience < 10 procedures) of 15 operators excessively rotated their head, neck, and/or back to visualize the image on the ultrasound machine. Eight operators (experience < 10 procedures) performed the procedure with excessive thoracolumbar flexion.
Performance of US-guided FNB presents ergonomic challenges and was suboptimal during most of the procedures observed. Formal training in US-guided peripheral nerve blockade should include reference to ergonomic factors.
Pilot prospective observational study.
Orthopedic operating room of a regional trauma hospital.
15 anesthesiologists of various levels of experience in US-guided FNB (estimated minimum experience < 10 procedures; maximum about 50 procedures, and from basic trainees to consultants); and 15 patients (5 men and 10 women), aged 77 ± 15 (mean ± SD yrs) years. MEASUREMENTS/OBSERVATIONS: A data capture "tool", which was modified from one previously developed for ergonomic study of spinal anesthesia, was studied. Patient, operator, and heterogeneous environmental factors related to ergonomic performance of US-guided FNB were identified. The observation period started immediately before commencement of positioning the patient and ended on completion of perineural injection. Data were acquired using direct observations, photography, and application of a questionnaire.
The quality of ergonomic performance was generally suboptimal and varied greatly among operators. Eight (experience < 10 procedures) of 15 operators excessively rotated their head, neck, and/or back to visualize the image on the ultrasound machine. Eight operators (experience < 10 procedures) performed the procedure with excessive thoracolumbar flexion.
Performance of US-guided FNB presents ergonomic challenges and was suboptimal during most of the procedures observed. Formal training in US-guided peripheral nerve blockade should include reference to ergonomic factors.
Language
en
ISSN
1873-4529
eISSN
ISBN
DOI
10.1016/j.jclinane.2010.06.006
PMID
21296245