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General Hospital Psychiatry 2021Catatonia is classically associated with psychiatric conditions but may occur in medical and neurologic disorders. Status epilepticus (SE) is a seizure lasting more than... (Review)
Review
INTRODUCTION
Catatonia is classically associated with psychiatric conditions but may occur in medical and neurologic disorders. Status epilepticus (SE) is a seizure lasting more than five minutes or two or more seizures within a five-minute period without interictal recovery of consciousness. Non-convulsive status epilepticus (NCSE) is SE without prominent motor activity that may present with catatonic symptoms. The relevance of NCSE as a potential etiology for catatonia is not clear in the literature.
METHODS
A systematic review was completed to evaluate the literature on NCSE presenting with catatonia. PubMed and PsycInfo databases were searched and articles were reviewed for the presence of catatonia and NCSE.
RESULTS
15 articles describing 27 cases meeting inclusion criteria were identified. The authors add 1 case to the literature. The most common catatonic symptoms identified in NCSE were mutism and stupor. Clinical features frequent in NCSE presenting with catatonia included new catatonic symptoms, age over 50 years, comorbid neurological conditions, or a change in medications that affect seizure threshold. A documented psychiatric history was also common and may contribute to delayed diagnosis.
DISCUSSION/CONCLUSION
It is important to consider NCSE in the differential diagnosis of new catatonic symptoms. A suggested approach to diagnostic evaluation is provided.
Topics: Catatonia; Diagnosis, Differential; Electroencephalography; Humans; Middle Aged; Seizures; Status Epilepticus
PubMed: 33276270
DOI: 10.1016/j.genhosppsych.2020.11.008 -
Child's Nervous System : ChNS :... Jun 2020Cerebellar mutism (CM) is a condition that occurs predominantly in children, after posterior fossa surgery (PFS). It is characterized by motor, speech, and behavioral...
PURPOSE
Cerebellar mutism (CM) is a condition that occurs predominantly in children, after posterior fossa surgery (PFS). It is characterized by motor, speech, and behavioral disorders. Despite widespread use of intraoperative neurophysiological monitoring (IONM), little is known about the neurophysiological aspects involved in the pathophysiology of CM. We reviewed the IONM literature to identify working hypotheses aimed to investigate intraoperatively the circuits involved in CM.
METHODS
A systematic review of the literature was conducted using PubMed central database. Papers describing the use of IONM techniques in the cerebellum were selected, thoroughly reviewed, and discussed.
RESULTS AND DISCUSSION
Only two studies reported the use of intraoperative neurophysiology of the cerebellum, suggesting a possible somatotopic motor organization of the cerebellar cortex. In addition, extra-operative studies using transcranial magnetic stimulation showed the possibility to modulate-possibly through the dentato-thalamic-cortical (DTC) pathway-primary motor cortex output using an appropriate cerebellar stimulus. In theory, the preservation of this either inhibitory or facilitatory modulation may predict the preservation of this pathway, while a loss of the effect may indicate an injury to the pathway, and predict a CM. Analogously, in the extra-operative setting, the comparison of pre-operative and post-operative transcranial magnetic stimulation of the cerebellum may predict the onset of CM whenever a pre-existing modulatory effect is lost as a result of surgery.
CONCLUSION
Virtually, no data exist on the intraoperative neurophysiology of the cerebellum. This limited knowledge, nevertheless, offers a unique opportunity to pediatric neurosurgeons to develop and test working hypotheses on the pathophysiology of CM, through the use of IONM.
Topics: Cerebellum; Child; Humans; Intraoperative Neurophysiological Monitoring; Motor Cortex; Neurophysiology; Neurosurgical Procedures
PubMed: 32246192
DOI: 10.1007/s00381-020-04565-y -
General Hospital Psychiatry 2020To ascertain the phenomenological characterisation of catatonia in N-methyl-d-aspartate receptor antibody encephalitis (NMDAr-AbE).
OBJECTIVE
To ascertain the phenomenological characterisation of catatonia in N-methyl-d-aspartate receptor antibody encephalitis (NMDAr-AbE).
METHODS
A systematic review of case reports was undertaken in accordance with PRISMA guidelines. Case reports of NMDAr-AbE containing sufficient information on the cases' clinical presentation and meeting the study's inclusion criteria were selected. Cases were searched for clinical data in keeping with core catatonic signs by applying the screening instrument of the Bush-Francis Catatonia Rating Scale. When two or more core signs were ascertained catatonia was considered to be present.
RESULTS
2645 records were identified through the database search. Following screening and application of eligibility/inclusion criteria 139 articles were selected reporting on 189 individual subjects. Catatonia was present in 60% of these cases. The most prevalent signs were immobility/stupor (70%), mutism (67%), excitement (50%), posturing/catalepsy (34%), stereotypies (31%), and rigidity (30%). Immobility/stupor and excitement co-occurred in the same patient in 33% of cases.
CONCLUSION
The phenomenological profile of catatonia in this sample of cases of NMDAr-AbE was characterised by a preponderance of signs in the hypokinetic spectrum. However, excitement often co-occurred in these patients suggesting that fluctuations in catatonic semiology may be frequent.
Topics: Anti-N-Methyl-D-Aspartate Receptor Encephalitis; Catatonia; Humans
PubMed: 32070914
DOI: 10.1016/j.genhosppsych.2020.01.002 -
Neurosurgical Review Feb 2021The cerebellum is historically implicated in motor coordination, but accumulating modern evidence indicates involvement in non-motor domains, including cognition,...
The cerebellum is historically implicated in motor coordination, but accumulating modern evidence indicates involvement in non-motor domains, including cognition, emotion, and language. This correlates with the symptoms observed in postoperative cerebellar mutism syndrome (CMS). Profound knowledge of cerebellar functional topography and tractography is important when approaching cerebellar tumors, as surgical trauma to relevant structures of cerebellar pathways plays a role in the pathogenesis of CMS. The aim of this systematic review is to provide a concise overview of relevant modern neuroimaging data and cerebellar functional tracts with regard to neurosurgical procedures.
Topics: Cerebellum; Humans; Neural Pathways; Neuroimaging; Neurosurgeons; Neurosurgical Procedures
PubMed: 32056026
DOI: 10.1007/s10143-020-01242-1 -
Revista Colombiana de Psiquiatria... Jan 2020Neuroleptic malignant syndrome (NMS) is a rare and potentially fatal drug adverse reaction. There are still few studies of this entity in the child-adolescent population. (Review)
Review
INTRODUCTION
Neuroleptic malignant syndrome (NMS) is a rare and potentially fatal drug adverse reaction. There are still few studies of this entity in the child-adolescent population.
OBJECTIVES
Describe the clinical, laboratory and therapeutic characteristics of children and adolescent patients with NMS. Analyse the grouping of symptoms present in NMS in the same population.
MATERIAL AND METHODS
A MEDLINE/PubMed search of all reported cases of NMS from January 2000 to November 2018 was performed and demographic, clinical, laboratory and therapeutic variables were identified. A factorial analysis of the symptoms was performed.
RESULTS
57 patients (42 males and 15 females) were included, (mean age 13.65±3.89 years). The onset of NMS occurred at 11.25±20.27 days with typical antipsychotics and at 13.69±22.43 days with atypical antipsychotics. The most common symptoms were muscle stiffness (84.2%), autonomic instability (84.2%) and fever (78.9). The most common laboratory findings were CPK elevation and leucocytosis (42.1%). The most used treatment was benzodiazepines (28.1%). In the exploratory factorial analysis of the symptoms we found 3factors: 1) "Catatonic" with mutism (0.912), negativism (0.825) and waxy flexibility (0.522); 2) "Extrapyramidal" with altered gait (0.860), involuntary abnormal movements (0.605), muscle stiffness (0.534) and sialorrhoea (0.430); and 3) "Autonomic instability" with fever (0.798), impaired consciousness (0.795) and autonomic instability (0.387).
CONCLUSIONS
NMS in children and adolescents could be of 3types: catatonic, extrapyramidal and autonomic unstable.
PubMed: 33735054
DOI: 10.1016/j.rcp.2019.10.003