PMID- 26597813 OWN - NLM STAT- MEDLINE DCOM- 20161213 LR - 20181202 IS - 0317-1671 (Print) IS - 0317-1671 (Linking) VI - 43 IP - 2 DP - 2016 Mar TI - Adverse Clinical Effects of Botulinum Toxin Intramuscular Injections for Spasticity. PG - 298-310 LID - 10.1017/cjn.2015.314 [doi] AB - OBJECTIVE: The adverse events (AEs) with botulinum toxin type-A (BoNTA), used for indications other than spasticity, are widely reported in the literature. However, the site, dose, and frequency of injections are different for spasticity when compared to the treatment for other conditions and hence the AEs may be different as well. The objective of this study was to summarize the AEs reported in Canada and systematically review the AEs with intramuscular botulinum toxin injections to treat focal spasticity. METHODS: Data were gathered from Health Canada (2009-2013) and major electronic databases. RESULTS: In a 4 year period, 285 AEs were reported. OnabotulinumtoxinA (n=272 events): 68% females, 53% serious, 18% hospitalization, and 8% fatalities. The type of AEs reported were - muscle weakness (19%), oropharyngeal (14%), respiratory (14%), eye related (8%), bowel/bladder related (8%), and infection (5%). IncobotulinumtoxinA (n=13): 38% females, 62% serious, and 54% hospitalization. The type of AEs reported were - muscle weakness (15%), oropharyngeal (15%), respiratory (38%), eye related (23%), bowel/bladder related (15%), and infection (15%). Commonly reported AEs in the literature were muscle weakness, pain, oropharyngeal, bowel/bladder, blood circulation, neurological, gait, and respiratory problems. CONCLUSION: While BoNTA is useful in managing spasticity, future studies need to investigate the factors that can minimize AEs. A better understanding of the underlying mechanisms of the AEs can also improve guidelines for BoNTA administration and enhance outcomes. FAU - Phadke, Chetan P AU - Phadke CP AUID- ORCID: 0000-0003-0957-7941 AD - 1Spasticity Research Program,West Park Healthcare Centre,University of Toronto,Toronto,Ontario,Canada. FAU - Balasubramanian, Chitra K AU - Balasubramanian CK AD - 4Clinical & Applied Movement Sciences,Brooks College of Health,University of North Florida,Florida,USA. FAU - Holz, Alanna AU - Holz A AD - 1Spasticity Research Program,West Park Healthcare Centre,University of Toronto,Toronto,Ontario,Canada. FAU - Davidson, Caitlin AU - Davidson C AD - 1Spasticity Research Program,West Park Healthcare Centre,University of Toronto,Toronto,Ontario,Canada. FAU - Ismail, Farooq AU - Ismail F AD - 1Spasticity Research Program,West Park Healthcare Centre,University of Toronto,Toronto,Ontario,Canada. FAU - Boulias, Chris AU - Boulias C AD - 1Spasticity Research Program,West Park Healthcare Centre,University of Toronto,Toronto,Ontario,Canada. LA - eng PT - Journal Article DEP - 20151124 PL - England TA - Can J Neurol Sci JT - The Canadian journal of neurological sciences. Le journal canadien des sciences neurologiques JID - 0415227 RN - 0 (Neuromuscular Agents) RN - EC 3.4.24.69 (Botulinum Toxins, Type A) RN - EC 3.4.24.69 (incobotulinumtoxinA) SB - IM MH - Botulinum Toxins, Type A/*adverse effects MH - Canada MH - Female MH - Humans MH - Injections, Intramuscular MH - Male MH - Muscle Spasticity/*drug therapy MH - Neuromuscular Agents/*adverse effects MH - Retrospective Studies OTO - NOTNLM OT - adverse effects OT - botulinum toxin OT - dysphagia OT - muscle weakness OT - pain OT - spasticity OT - systematic review EDAT- 2015/11/26 06:00 MHDA- 2016/12/15 06:00 CRDT- 2015/11/25 06:00 PHST- 2015/11/25 06:00 [entrez] PHST- 2015/11/26 06:00 [pubmed] PHST- 2016/12/15 06:00 [medline] AID - S0317167115003145 [pii] AID - 10.1017/cjn.2015.314 [doi] PST - ppublish SO - Can J Neurol Sci. 2016 Mar;43(2):298-310. doi: 10.1017/cjn.2015.314. Epub 2015 Nov 24.