Which ultrasound-guided parasternal intercostal nerve block for post-sternotomy pain? Results from a prospective observational study

Table 2 Outcomes measures

Variables	Overall n = 95	Morphine group n = 32	PIFB group n = 32	TTPB group n = 31
*NRS 9 h*	2.0 (0.0–3.0)	2.0 (0.0–2.25)	2.0 (0.0–3.0)	0.0 (0.0–4.0)
*NRS 12 h*	2.0 (0.0–3.0)	2.0 (0.0–3.0)	2.0 (0.0–3.0)	1.0 (0.0–3.0)
*NRS 24 h*	2.0 (0.0–2.0)	2.0 (1.0–2.0)	1.0 (0.0–3.0)	2.0 (0.0–2.0)
*NRS 48 h*	1.0 (0.0–2.0)	1.5 (0.0–2.0)	0.0 (0.0–2.0)	1.0 (0.0–2.0)
*Morphine total consumption (mg)*	5.0 (0.0–12.3)	15.6 (9.6–30.0)	0.0 (0.0–2.0)*	0.0 (0.0–5.5)*
*Morphine consumption 24 h (mg)*	4.8 (0.0–11.5)	14.8 (9.4–30.0)	0.0 (0.0–2.0)*	0.0 (0.0–5.0)*
*Morphine consumption 24–48 h (mg)*	0.0 (0.0–0.0)	0.0 (0.0–2.0)	0.0 (0.0–0.0)*	0.0 (0.0–0.0)
*Rescue dose*			0.0 (0.0–2.0)	0.0 (0.0–0.5)

NRS, numeric rating scale; morphine tot, total morphine consumption (continue infusion + rescue dose); morphine consumption 24 h, total morphine doses in the first 24 postoperative hours; morphine consumption 24–48, total morphine doses between 24 and 48 postoperative hours. Note: Results are presented as median (range 25–75). *p < 0.01 vs morphine group

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