Comment on “Single versus two-level superficial parasternal intercostal plane block: cadaveric evaluation of injectate spread with needle tip position on anterior surface of costal cartilage”

I read with great interest the recent cadaveric study by Christensen et al,1 which evaluated the parasternal spread of injectate in superficial parasternal intercostal plane (SPIP) blocks using either single-level or two-level injections with the needle tip positioned on the anterior surface of the costal cartilage. The authors demonstrated that two-level injections at T3 and T5 provided a wider cephalocaudal spread than single-level injections at T4, and they attributed this improved distribution to the positioning of the needle tip over the costal cartilage. Although these findings are interesting, I would like to offer some additional considerations.