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Table 4.20 Interventions for the Treatment of Vestibular Dysfunction Post ABI

Author, Year Country Study Design Sample Size Methods Outcome
Naguib & Madian (2014) Egypt RCT PEDro=5 N=60 Population: TBI; Mean Age=30yr; Group 1 (n=20): Gender: Male=14, Female=6; Severity: Mild=8, Moderate=7, Severe=5. Group 2 (n=20): Gender: Male=14, Female=6; Severity: Mild=8, Moderate=8, Severe=4. Group 3 (n=20): Gender: Male=15, Female=5; Severity: Mild=6, Moderate=8, Severe=6. Intervention: Participants were randomized to receive betahistine dihydrochloride (48mg/d, Group 1), a vestibular rehabilitation program (Group 2), or both (Group 3) as treatment for a balance disorder. Outcomes were assessed via videonystagmography at baseline, 1 and 2wk, and then every month until recovery. Outcome Measures: Recovery time. 1.        Group 3 showed the earliest recovery time: complete recovery within 2mo. 2.        For Group 2, 80% had complete recovery within 2 months and 20% within 3mo. 3.        For Group 1, 85% had complete recovery within 2-3 months, and 15% in more than 3 months. 4.        Mean recovery time was significantly longer in Group 1 (62.1d) than in Group 2 (37.6d) and Group 3 (34.4d; p<0.050), but there was no significant difference between Group 2 and Group 3 (p>0.05).
Peirone et al. (2014) Italy RCT PEDro=6 N=16 Population: TBI=7, Stroke=7, Other=2; Mean Age=40.5yr; Gender: Male=9, Female=7; Mean Time Post Injury=14.3mo. Intervention: Participants were randomized into a control (n=8) or intervention group (n=8). Both groups received standard physiotherapy in 50min sessions (3x/wk for 7wk). The intervention group also performed an individualized dual-task home-based programme (6d/wk for 7wk). Outcome Measure: Balance Evaluation System Test (BEST), Activities-Specific Balance Confidence Scale, Goal Attainment Scaling (GAS). 1.        Post-intervention scores differed significantly between groups on the BEST, with the intervention group improving more (p=0.008). 2.        There were no significant between group differences on the Activities-specific Balance Confidence Scale (p=0.110), or the GAS (p=0.093). 3.        The control group made significant improvements on the BEST (mean change=5.5±3.53, p=0.020) and the GAS (mean change=16.28±6.58, p=0.010). 4.        The intervention group made significant improvements from pre to post intervention on the BEST (mean change=17.87±6.05, p=0.014), the Activities-Specific Balance Confidence scale (mean change=25.25±25.51, p=0.01) and the GAS (mean change=19.37±9.03, p=0.02).
Motin et al. (2005) Israel Post-Test N=10   Population: Severe TBI; Mean Age=43yr; Gender: Male=8, Female=2; Mean Time Post Injury=67d. Intervention: Patients underwent a particle reposition maneuver. The examiner performed the Dix-Hallpike test to the affected side such that nystagmus and vertigo were elicited; this position was maintained for 1-2min. The patient’s head was then rotated 90º to the opposite side and held for ~ 30sec. The subject was then asked to turn their head another 90º to the unaffected side. This position was maintained for another 1-2min and then the subject was assisted to sit-up. Outcome Measure: Improvements in Positional Nystagmus. 1.        Six of 10 subjects had resolved positional nystagmus and vertigo following a single particle repositioning maneuver. 2.        Nine of 14 (64%) affected ears had resolved positional nystagmus and vertigo following a single particle repositioning maneuver. 1.        The other four subjects needed between 3 and 6 repeated treatments until their symptoms were completely resolved.
Dault and Duga (2002) Canada PCT N=8   Population: TBI=8; Mean Age=29.6yr; Gender: Male=6, Female=2; Mean Time Post Injury=44.4mo. Intervention: Participants completed an individualized 12wk Specific Training Program (STP) combining aerobic dance, and slide and step training for 30min, 3x/wk compared to traditional muscular training (TMT) for 60min, 2x/wk for 12wk. Outcome Measure: Clinical Test for Sensory Interaction in Balance (CTSIB), Jumping Jack movement. 1.        Over time, all of the participants’ performance of the exercises improved. 2.        The analysis of balance revealed a significant difference between pre- and post-training sway area for the STP group (p<0.05) but not for the TMT group.
Gurr and Moffat (2001) (2001) UK Pre-Post N=41 Population: TBI; Mean Age=44.1yr; Gender: Male=28, Female=41; Mean Time Post Injury=78.7mo. Intervention: Therapy consisted of a behavioral exposure program to movements and activities that provoked vertigo and anxiety in order to assist compensation of vestibular dysfunction and habituation to physical anxiety symptoms. Outcome Measure: Vertigo Symptom Scale (VSS), Vertigo Rating scale (VRS), Vertigo Handicap Questionnaire (VHQ), Sway-Monitor Assessment. 1.        At the end of therapy, participants’ vertigo symptoms and somatic anxiety had significantly decreased from pre-test to post-test (both p<0.01). 2.        Significant reductions in VRS scores were shown from pre-test to post-test, and post-test to follow up (both p<0.01). 3.        Patients were able to perform exercises significantly faster (p<0.01) and with significant lower rating of dizziness (p<0.01) after the intervention. 4.        Post-test levels of postural sway on the sway monitor (ability to balance on an unstable surface with eyes open) had significantly improved compared to pre-test levels (p=0.008). 5.        Vertigo handicap levels (VHQ scores) significantly decreased from pre to post intervention (p<0.01). 1.        Vertigo handicap levels (