Prevalence and Characterization of Breakthrough Pain Associated with Chronic Low Back Pain in the South of Spain: A Cross-Sectional, Multicenter, Observational Study

Table 5

Route of administration of opioids for BTP.

		%
Morphine
Oral, short-acting	11	84.6
Nasal	1	7.7
Oral, long-acting	1	7.7
Fentanyl
Nasal	99	53.2
Sublingual	52	28
Transmucosal	23	12.4
Oral, short-acting	9	4.8
Intrathecal	2	1.1
Transdermal	1	0.5
Oxycodone
Oral, short-acting	13	81.3
Oral, long-acting	3	18.8
Tramadol
Oral, short-acting	26	86.7
Oral, long-acting	4	13.3