Differences in pain perception during open muscle biopsy and Bergstroem needle muscle biopsy

Figures & data

Figure 1 Pain perception during NB and OB.

Notes: (A) Mean NRS values for pain perception during NB and OB in 33 patients. (B) Bland–Altman plot comparing differences in NRS values during biopsies. For each patient the mean difference in NRS between NB and OB is plotted against the average NRS value of NB and OB. Bold points represent two data points.
Abbreviations: CI, confidence interval; NB, Bergstroem needle biopsy; NRS, numeric rating scale; OB, open surgical biopsy.

Figure 2 Pain categories and differences in pain during OB and NB.

Notes: (A) Distribution of categories of intraprocedural pain intensity according to NRS during NB and OB. Pain was categorized as “mild” for NRS 0–3, “moderate” for NRS 4–7, and “severe” for NRS 8–10. (B) Patients were grouped into the ones that found NB more uncomfortable (NB_mu) and the ones that found OB more uncomfortable (OB_mu). To visualize potential clinical relevance, the differences in pain perception (ΔNRS) were grouped as ≤2 or >2.
Abbreviations: mu, more uncomfortable; NB, Bergstroem needle biopsy; ΔNRS, difference in NRS values; NRS, numeric rating scale; OB, open surgical biopsy.