Introduction: Treatment with intrathecal baclofen (ITB) is a therapeutic option in the management of severe spasticity in patients with hereditary spastic paraparesis (HSP). However, information on the impact of ITB on the natural course of disease, especially the effect of ITB on functional parameters over time is limited. Materials and Methods: We evaluated seven patients with HSP retrospectively who were treated with an ITB device. The following parameters were measured before (pre-implantation) and after implantation (post-implantation) of the ITB device at steady state dosage of ITB and annually until last follow-up: modified Ashworth Scale, Reflex Scale, modified Rankin Scale, and Rivermead Mobility Index. The ITB dosages were assessed after reaching steady state as well as annually until last follow-up. Results: The ITB device was implanted 13 ± 6 (range 9–16) years after diagnosis of HSP on average. Severe spasticity was controlled in all patients by a mean baclofen dosage of 188 ± 60 (range 145–230) μg per day at steady state post-implantation. The modified Ashworth Scale improved significantly from 3 (interquartile range [IQR] 3–3.25) to 1 (IQR 1–1.25; p = 0.046), as did the Reflex Scale from 5 (IQR 4.75–5) to 3 (IQR 2.75–3; p = 0.046) at steady state dosage of ITB. The modified Rankin Scale improved from 2 (IQR 2–2) to 1 (IQR 1–1.5; p = 0.083) and the Rivermead Mobility Index remained 14 (IQR 13.5–14 pre-implantation, IQR 14–14 post-implantation; p = 0.18). Post-implantation, spasticity improved for 2–3 years, followed by a stable phase of ambulatory and other mobility functions for 4–5 years. Thereafter, the maintenance or progressive loss of mobility depended on individual courses of the disease. No ITB-related severe side effects occurred. Discussion: Our data further support the role of ITB in the treatment of severe spasticity in patients with deteriorated walking performance suffering HSP. ITB therapy may initially improve spasticity and stabilize mobility functions for the first 6–8 years in patients with HSP.

ObjectiveTreatment with intrathecal baclofen (ITB) is commonly used in patients with severe spasticity. However, complications may occur after implantation of the ITB‐device, albeit mainly procedure‐ and device‐related problems. The aim of the study was to assess surgical‐ as well as catheter‐ and pump‐related complications and define their risk factors.MethodsWe retrospectively evaluated all patients with an implanted ITB‐device who were treated at the Department of Neurology, Hochzirl Hospital, Zirl, Austria, between 2006 and 2016.ResultsTwenty‐nine of 116 (25%) patients experienced 32 complications: 5 procedure‐ and 27 device‐related (4 pump‐ and 23 catheter‐associated) problems occurred. Risk factors for sustaining any complication were a spinal localization of lesion (odds ratio [OR] OR 2.71, p = .021), other catheter types than an Ascenda® catheter (OR 3.87, p = .041), a lower modified Rankin Scale (median 4 vs. 5; OR 2.86, p = .015) and a higher Barthel Index (median 53 vs. 0; OR 2.84, p = .006). The median time from the last ITB‐related surgery to the first complication was 18 (IQR 1‐57) months. Overall, 47% complications occurred within the first year after any surgical procedure regarding the ITB‐device, thereof 25% within the first month.ConclusionsProcedure‐ and device‐related complications are frequent after implantation of an ITB‐device with catheter‐associated complications as the most frequently encountered problems. Patients with a spinal origin of spasticity, a lower modified Rankin Scale and a higher Barthel Index have a higher risk to sustain a complication.

IntroductionIntrathecal baclofen (ITB) is a commonly used treatment in severe spasticity. The main objective of this study was to assess the impact of ITB on reduction or withdrawal of oral drugs in patients with paroxysmal sympathetic hyperactivity (PSH) after severe traumatic brain injury.MethodsWe retrospectively evaluated 20 patients with PSH due to severe traumatic brain injury who were treated with ITB in a primary care and referral center of neurology. Rates of and time until complete withdrawal or possible reduction in oral baclofen and oral propranolol after ITB treatment were calculated. Moreover, vegetative parameters (heart rate and blood pressure) as well as hypertonic attacks were assessed.ResultsThe median time of complete oral baclofen disposal was 5 ± 3.7 (CI 95% [2.9–7.1], range 0–14) days after ITB pump implantation in 20 of 20 patients, and the median time of complete oral propranolol disposal was 24 ± 62.97 (CI 95% [−7.87–55.87], range 5–191) in 15 of 20 patients. With ITB treatment, PSH improved promptly in all patients with alleviation of heart rate and blood pressure as well as reduction in attacks with motor phenomena. ITB treatment was safe and without complications.ConclusionsITB might facilitate cutting back or dispensing with other conventional oral drugs, such as oral baclofen and oral propranolol. Our study provides further evidence that ITB treatment should be considered in patients with otherwise medically refractory PSH in severe traumatic brain injury. Further prospective multicenter studies are needed to confirm the findings of this study.

Background Occasionally, patients show dramatic recovery from disorders of consciousness (DOC) under intrathecal baclofen (ITB), an established treatment option for severe supraspinal spasticity. Anecdotal explanations for ITB‐related recovery of cognition include modulation of afferent impulses at the spinal level, thereby reducing spasticity‐related proprioceptive information overload within cortico–thalamo–cortical connections. Objective In this retrospective patient chart analysis, we assessed whether a reduction in spasticity would be associated with an increase in Coma Recovery Scale revised (CRS‐R) scores in a larger sample of patients than previously published. Methods From a hospital‐based ITB treatment register, we extracted data from 26 patients with DOC and severe supraspinal spasticity who improved by >2 points on the Coma Recovery Scale revised (CRS‐R) within 6 months after ITB treatment initiation. We assessed Modified Ashworth scale (MAS) scores and CRS‐R scores on admission (PRE) and 3 and 6 months after initiation of ITB treatment (3M, 6M). We performed correlation analysis of the scores and their respective changes (PRE to 3M, 3M to 6M). We also correlated the time from acute event until ITB initiation to CRS‐R scores at 3M and 6M. Results ITB led to significant improvement in spasticity based on MAS scores, which did not correlate to the improvements seen in CRS‐R total and subscale scores. Daily ITB dose did neither correlate to MAS scores nor to CRS‐total scores in the whole patient group, but after 3 months, ITB dose correlated to some CRS‐R subscale scores in some patient subgroups. Time until ITB treatment did not correlate to CRS‐R scores later on. Conclusions Our data confirm that ITB may exert beneficial effects in selected DOC patients with respect to improved cognitive functions, which, however, do not correlate to its antispastic effect. The lack of correlation between time to ITB and CRS‐R outcome, but significant CRS‐R improvements following pump implantation, renders spontaneous remissions unlikely and leaves room for alternative pharmacological mechanisms.

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