Bradykinesia in dystonic hand tremor: kinematic analysis and clinical rating

MATEJICKA, Peter, Slavomir KAJAN, Jozef GOGA, Igor STRAKA, Marek BALÁŽ, Simon JANOVIC, Michal MINAR, Peter VALKOVIC, Michal HAJDUK a Zuzana KOSUTZKA. Bradykinesia in dystonic hand tremor: kinematic analysis and clinical rating. Frontiers in Human Neuroscience. Lausanne: FRONTIERS MEDIA SA, 2024, roč. 18, June 2024, s. 1-9. ISSN 1662-5161. Dostupné z: https://dx.doi.org/10.3389/fnhum.2024.1395827.

Základní údaje

• Originální název: Bradykinesia in dystonic hand tremor: kinematic analysis and clinical rating
• Autoři: MATEJICKA, Peter, Slavomir KAJAN, Jozef GOGA, Igor STRAKA, Marek BALÁŽ (703 Slovensko, domácí), Simon JANOVIC, Michal MINAR, Peter VALKOVIC, Michal HAJDUK a Zuzana KOSUTZKA.
• Vydání: Frontiers in Human Neuroscience, Lausanne, FRONTIERS MEDIA SA, 2024, 1662-5161.

Další údaje

• Originální jazyk: angličtina
• Typ výsledku: Článek v odborném periodiku
• Obor: 30210 Clinical neurology
• Stát vydavatele: Švýcarsko
• Utajení: není předmětem státního či obchodního tajemství
• WWW: URL
• Impakt faktor: Impact factor: 2.900 v roce 2022
• Organizační jednotka: Lékařská fakulta
• Doi: http://dx.doi.org/10.3389/fnhum.2024.1395827
• UT WoS: 001255206600001
• Klíčová slova anglicky: dystonic tremor; bradykinesia; finger tapping; kinematic analysis; blinded clinical rating
• Štítky: 14110127
• Příznaky: Mezinárodní význam, Recenzováno

Anotace

Introduction Bradykinesia is an essential diagnostic criterion for Parkinson's disease (PD) but is frequently observed in many non-parkinsonian movement disorders, complicating differential diagnosis, particularly in disorders featuring tremors. The presence of bradykinetic features in the subset of dystonic tremors (DT), either "pure" dystonic tremors or tremors associated with dystonia, remains currently unexplored. The aim of the current study was to evaluate upper limb bradykinesia in DT patients, comparing them with healthy controls (HC) and patients with PD by observing repetitive finger tapping (FT).Methods The protocol consisted of two main parts. Initially, the kinematic recording of repetitive FT was performed using optical hand tracking system (Leap Motion Controller). The values of amplitude, amplitude decrement, frequency, frequency decrement, speed, acceleration and number of halts of FT were calculated. Subsequently, three independent movement disorder specialists from different movement disorders centres, blinded to the diagnosis, rated the presence of FT bradykinesia based on video recordings.Results Thirty-six subjects participated in the study (12 DT, 12 HC and 12 early-stage PD). Kinematic analysis revealed no significant difference in the selected parameters of FT bradykinesia between DT patients and HC. In comparisons between DT and PD patients, PD patients exhibited bigger amplitude decrement and slower FT performance. In the blinded clinical assessment, bradykinesia was rated, on average, as being present in 41.6% of DT patients, 27.7% of HC, and 91.7% of PD patients. While overall inter-rater agreement was moderate, weak agreement was noted within the DT group.Discussion Clinical ratings indicated signs of bradykinesia in almost half of DT patients. The objective kinematic analysis confirmed comparable parameters between DT and HC individuals, with more pronounced abnormalities in PD across various kinematic parameters. Interpretation of bradykinesia signs in tremor patients with DT should be approached cautiously and objective motion analysis might complement the diagnostic process and serve as a decision support system in the choice of clinical entities.