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The
traction, pressure, and rapid muscle release (TPR) is a new methodology that
offers a better pain reduction associated with intramuscular injection than the
Z-track method.
A
recent study conducted by Narges Heshmatifar et al. depicted that skin
traction, pressure, and rapid muscle release (TPR) could be used as a
substitute to the Z-track method for reducing the intramuscular (IM) injection
pain. In this study, a total of 63 patients were enrolled in the triple-blind
randomized clinical trial who were injected with two 5-cc Methocarbamol IM
injection, which was delivered via two techniques in two different muscles to
compare the results efficiently. In the innovative TPR technique, the needle
was inserted at a 90° angle after applying skin traction and imposing deep
pressure on the muscle so that the skin and muscle release rapidly towards the
needle. In contrast, no muscle release applied in the case of the Z-track
method. Visual analogue scale (VAS) was used to identify the intensity of pain,
and the findings showed pain intensity in TPR and Z-track methods 1.68 ± 1.20
and 3.76 ± 1.42, respectively, which is a statistically significant difference.
These results prove the better pain reduction at the IM site with the TPR
method than the Z-track method. Thus, the TPR method could be an efficient
substitute for the Z-track method.
Pain Managment Nursing
A New Approach on the pain management of intramuscular injection: A Triple-Blind Randomized Clinical Trial
Narges Heshmatifar et al.
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