دورية أكاديمية
B-waves are present in patients without intracranial pressure disturbances
| العنوان: | B-waves are present in patients without intracranial pressure disturbances |
|---|---|
| المؤلفون: | Riedel, Casper Schwartz, Martinez Tejada, Isabel, Norager, Nicolas Hernandez, Kempfner, Lykke, Jennum, Poul, Juhler, Marianne |
| المصدر: | Riedel , C S , Martinez Tejada , I , Norager , N H , Kempfner , L , Jennum , P & Juhler , M 2021 , ' B-waves are present in patients without intracranial pressure disturbances ' , Journal of Sleep Research , vol. 30 , no. 40 , e13214 . https://doi.org/10.1111/jsr.13214Test |
| سنة النشر: | 2021 |
| المجموعة: | Technical University of Denmark: DTU Orbit / Danmarks Tekniske Universitet |
| مصطلحات موضوعية: | Hydrocephalus, Lundberg B-waves, Normal ICP, Polysomnography, Sleep apnea, Sleep-disordered breathing |
| الوصف: | Intracranial pressure (ICP) B-waves are defined as short, repeating elevations of ICP of up to 50 mmHg with a frequency of 0.5-2 waves/min. The presence of B-waves in overnight recordings is regarded as a pathological phenomenon. However, the physiology of B-waves is still not fully understood and studies with transcranial Doppler, as a surrogate marker for ICP, have suggested that B-waves could be a normal physiological phenomenon. We present four patients without known structural neurological disease other than a coincidentally found unruptured intracranial aneurysm. One of the patients had experienced well-controlled epilepsy for several years, but was included because ICP under these conditions is unlikely to be abnormal. Following informed consent, all four patients had a telemetric ICP probe implanted during a prophylactic operation with closure of the aneurysm. They underwent overnight ICP monitoring with simultaneous polysomnography (PSG) sleep studies at 8 weeks after the operation. These patients exhibited nocturnal B-waves, but did not have major structural brain lesions. Their ICP values were within the normal range. Nocturnal B-waves occurred in close association with sleep-disordered breathing (SDB) in rapid eye movement (REM) and non-REM sleep stages. SDB during REM sleep was associated with ramp-type B-waves; SDB during non-REM sleep was associated with the sinusoidal type of B-wave. We propose that B-waves are a physiological phenomenon associated with SDB and that the mechanical changes during respiration could have an essential and previously unrecognised role in the generation of B-waves. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | https://orbit.dtu.dk/en/publications/c09116b8-5e42-48cb-a899-bec4917061bfTest |
| DOI: | 10.1111/jsr.13214 |
| الإتاحة: | https://doi.org/10.1111/jsr.13214Test https://orbit.dtu.dk/en/publications/c09116b8-5e42-48cb-a899-bec4917061bfTest |
| حقوق: | info:eu-repo/semantics/closedAccess |
| رقم الانضمام: | edsbas.5B8A644C |
| قاعدة البيانات: | BASE |
| DOI: | 10.1111/jsr.13214 |
|---|