BACKGROUND AND OBJECTIVE: Diagnostic injections are used to diagnose myriad pain conditions, but are characterized by a high false-positive rate. One potential cause of inaccurate diagnostic blocks is the use of sedation. We sought to determine the effect of sedation on the validity of diagnostic injections. DESIGN: Randomized, crossover study in which 73 patients were allocated to receive a diagnostic sacroiliac joint or sympathetic nerve block performed either with or without sedation using midazolam and fentanyl. Those who obtained equivocal relief, good relief lasting less than 3 months, or who were otherwise deemed good candidates for a repeat injection, received a subsequent crossover injection within 3 months (N = 46). SETTING AND PATIENTS: A tertiary care teaching hospital and a military treatment facility. RESULTS: In the primary crossover analysis, blocks performed with sedation resulted in a larger mean reduction in pain diary score than those done without sedation (1.2 [2.6]; P = 0.006), less procedure-related pain (difference in means 2.3 [2.5]; P < 0.0001), and a higher proportion of patients who obtained > 50% pain relief on their pain diaries (70% vs. 54%; P = 0.039). The increased pain reduction was not accompanied by increased satisfaction (sedation mean 3.9 [1.1] vs. 3.7 [1.3]; P = 0.26). Similar findings were observed for the parallel group (N = 73) and omnibus (all sedation vs. no sedation blocks, N = 110) analyses. No differences in outcomes were noted between the use and non-use of sedation at 1-month. CONCLUSIONS: The use of sedation during diagnostic injections may increase the rate of false-positive blocks and lead to misdiagnoses and unnecessary procedures, but has no effect on satisfaction or outcomes at 1-month. Wiley Periodicals, Inc.
RCT Entities:
BACKGROUND AND OBJECTIVE: Diagnostic injections are used to diagnose myriad pain conditions, but are characterized by a high false-positive rate. One potential cause of inaccurate diagnostic blocks is the use of sedation. We sought to determine the effect of sedation on the validity of diagnostic injections. DESIGN: Randomized, crossover study in which 73 patients were allocated to receive a diagnostic sacroiliac joint or sympathetic nerve block performed either with or without sedation using midazolam and fentanyl. Those who obtained equivocal relief, good relief lasting less than 3 months, or who were otherwise deemed good candidates for a repeat injection, received a subsequent crossover injection within 3 months (N = 46). SETTING AND PATIENTS: A tertiary care teaching hospital and a military treatment facility. RESULTS: In the primary crossover analysis, blocks performed with sedation resulted in a larger mean reduction in pain diary score than those done without sedation (1.2 [2.6]; P = 0.006), less procedure-related pain (difference in means 2.3 [2.5]; P < 0.0001), and a higher proportion of patients who obtained > 50% pain relief on their pain diaries (70% vs. 54%; P = 0.039). The increased pain reduction was not accompanied by increased satisfaction (sedation mean 3.9 [1.1] vs. 3.7 [1.3]; P = 0.26). Similar findings were observed for the parallel group (N = 73) and omnibus (all sedation vs. no sedation blocks, N = 110) analyses. No differences in outcomes were noted between the use and non-use of sedation at 1-month. CONCLUSIONS: The use of sedation during diagnostic injections may increase the rate of false-positive blocks and lead to misdiagnoses and unnecessary procedures, but has no effect on satisfaction or outcomes at 1-month. Wiley Periodicals, Inc.
Authors: Robert W Hurley; Meredith C B Adams; Meredith Barad; Arun Bhaskar; Anuj Bhatia; Andrea Chadwick; Timothy R Deer; Jennifer Hah; W Michael Hooten; Narayan R Kissoon; David Wonhee Lee; Zachary Mccormick; Jee Youn Moon; Samer Narouze; David A Provenzano; Byron J Schneider; Maarten van Eerd; Jan Van Zundert; Mark S Wallace; Sara M Wilson; Zirong Zhao; Steven P Cohen Journal: Pain Med Date: 2021-11-26 Impact factor: 3.750
Authors: Robert W Hurley; Meredith C B Adams; Meredith Barad; Arun Bhaskar; Anuj Bhatia; Andrea Chadwick; Timothy R Deer; Jennifer Hah; W Michael Hooten; Narayan R Kissoon; David Wonhee Lee; Zachary Mccormick; Jee Youn Moon; Samer Narouze; David A Provenzano; Byron J Schneider; Maarten van Eerd; Jan Van Zundert; Mark S Wallace; Sara M Wilson; Zirong Zhao; Steven P Cohen Journal: Reg Anesth Pain Med Date: 2021-11-11 Impact factor: 6.288
Authors: Steven P Cohen; Arun Bhaskar; Anuj Bhatia; Asokumar Buvanendran; Tim Deer; Shuchita Garg; W Michael Hooten; Robert W Hurley; David J Kennedy; Brian C McLean; Jee Youn Moon; Samer Narouze; Sanjog Pangarkar; David Anthony Provenzano; Richard Rauck; B Todd Sitzman; Matthew Smuck; Jan van Zundert; Kevin Vorenkamp; Mark S Wallace; Zirong Zhao Journal: Reg Anesth Pain Med Date: 2020-04-03 Impact factor: 6.288