WordNet

the distance between things; "fragile items require separation and cushioning" (同)separation
the difference in pitch between two notes (同)musical interval
a set containing all points (or all real numbers) between two given endpoints
having a clear mind; "a lucid moment in his madness"

PrepTutorEJDIC

(事と事の)間の時間,『合い間』;(物と物の)間の空間,間隔 / 《英》=intermission / 音程
分かりやすい,明快な(clear) / 正気の(sane) / 透き通った,透明な(transparent) / 《詩》明るい,輝いた(bright)

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/11/25 21:30:45」(JST)

wiki en

In emergency medicine, a lucid interval is a temporary improvement in a patient's condition after a traumatic brain injury, after which the condition deteriorates. A lucid interval is especially indicative of an epidural hematoma. An estimated 20 to 50% of patients with epidural hematoma experience such a lucid interval.^[1]^[2]

Indications

The lucid interval occurs after the patient is knocked out by the initial concussive force of the trauma, then lapses into unconsciousness again after recovery when bleeding causes the hematoma to expand past the extent for which the body can compensate.^[3] After the injury, the patient is momentarily dazed or knocked out, and then becomes relatively lucid for a period of time which can last minutes or hours.^[3] Thereafter there is rapid decline as the blood collects within the skull, causing a rise in intracranial pressure, which damages brain tissue. In addition, some patients may develop "pseudoaneurysms" after trauma which can eventually burst and bleed, a factor which might account for the delay in loss of consciousness.^[4]

Because a patient may have a lucid interval, any significant head trauma is regarded as a medical emergency and receives emergency medical treatment even if the patient is conscious.

Delayed cerebral edema, a very serious and potentially fatal condition in which the brain swells dramatically, may follow a lucid interval that occurs after a minor head trauma.^[5]

Lucid intervals may also occur in conditions other than traumatic brain injury, such as heat stroke^[6] and the postictal phase after a seizure in epileptic patients.^[7]

References

^ Kushner D (1998). "Mild Traumatic Brain Injury: Toward Understanding Manifestations and Treatment". Archives of Internal Medicine 158 (15): 1617–1624. doi:10.1001/archinte.158.15.1617. PMID 9701095.
^ Kushner DS (2001). "Concussion in Sports: Minimizing the Risk for Complications". American Family Physician 64 (6): 1007–14. PMID 11578022.
^ ^a ^b Valadka AB (2004). "Injury to the cranium". In Moore EJ, Feliciano DV, Mattox KL. Trauma. New York: McGraw-Hill, Medical Pub. Division. pp. 385–406. ISBN 0-07-137069-2. Retrieved 2008-08-15.
^ Roski, RA; Owen M; White RJ; Takaoka Y; Bellon EM (1981). "Middle meningeal artery trauma". Surgical Neurology (Elsevier Science Inc) 17 (3): 200–203. doi:10.1016/0090-3019(82)90280-4. PMID 7079938.
^ Kors, EE; Terwindt GM, Vermeulen FL, Fitzsimons RB, Jardine PE, Heywood P, Love S, van den Maagdenberg AM, Haan J, Frants RR, Ferrari MD (2001). "Delayed cerebral edema and fatal coma after minor head trauma: role of the CACNA1A calcium channel subunit gene and relationship with familial hemiplegic migraine". Annals of Neurology 49 (6): 753–760. doi:10.1002/ana.1031. PMID 11409427. Cite uses deprecated parameters (help)
^ Casa, DJ; Armstrong LE; Ganio MS; Yeargin SW (2005). "Exertional heat stroke in competitive athletes". Current Sports Medicine Reports 4 (6): 309–317. doi:10.1097/01.csmr.0000306292.64954.da. PMID 16282032.
^ Nishida, T; Kudo T; Nakamura F; Yoshimura M; Matsuda K; Yagi K (2005). "Postictal mania associated with frontal lobe epilepsy". Epilepsy and Behavior 6 (1): 102–110. doi:10.1016/j.yebeh.2004.11.009. PMID 15652742.

External links

Medpix.com discussion of lucid interval. Retrieved on February 6, 2007.

UpToDate Contents

全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.

1. 成人における頭蓋内硬膜外血腫 intracranial epidural hematoma in adults
2. 小児における硬膜外血腫：臨床的特徴、診断、およびマネージメント intracranial epidural hematoma in children clinical features diagnosis and management
3. 痙攣発作およびてんかんを有する患者に対する自動車運転の制限 driving restrictions for patients with seizures and epilepsy
4. QT短縮症候群 short qt syndrome
5. 成人における抗癌剤の投与 dosing of anticancer agents in adults

English Journal

1H-magnetic resonance spectroscopy indicates damage to cerebral white matter in the subacute phase after CO poisoning.

Beppu T, Nishimoto H, Fujiwara S, Kudo K, Sanjo K, Narumi S, Oikawa H, Onodera M, Ogasawara K, Sasaki M.SourceDepartments of Neurosurgery and Hyperbaric Medicine, Iwate Medical University, Uchimaru 19-1, Morioka 020-8505, Japan; tbeppu@iwate-med.ac.jp.
Journal of neurology, neurosurgery, and psychiatry.J Neurol Neurosurg Psychiatry.2011 Aug;82(8):869-75. Epub 2011 Jan 17.
Objective The authors examined whether (1)H-magnetic resonance spectroscopy (MRS) can identify damage to the centrum semiovale in the subacute phase after CO exposure. Methods Subjects comprised 29 adult patients who were treated with hyperbaric oxygenation within a range of 4-95&emsp14;h (mean
PMID 21242286

Sickle Cell Trait-Associated Deaths: A Case Series with a Review of the Literature*(,†).

Thogmartin JR, Wilson CI, Palma NA, Ignacio SS, Shuman MJ, Flannagan LM.SourceDistrict Six Medical Examiner Office, 10900 Ulmerton Road, Largo, FL 33778. District Eleven Medical Examiner Office, #1 on Bob Hope Road, Miami, FL 33136. District Two Medical Examiner Office, 1899 Eider Court, Tallahassee, FL 32317.
Journal of forensic sciences.J Forensic Sci.2011 Apr 11. doi: 10.1111/j.1556-4029.2011.01774.x. [Epub ahead of print]
? This study presents a series of 16 carriers of hemoglobin S (HbS) who died during various circumstances. Many of the cases were associated with mild to moderate exertion. The onset and/or duration of symptoms varied from a few minutes to several hours with many displaying a prolonged lucid inter
PMID 21480898

Japanese Journal

てんかん発作に関連する2種類の精神症状のエピソードを呈した1例

岡崎光俊,加藤昌明,伊藤ますみ,渡辺雅子,仲間秀幸,開道貴信,金子裕,大槻泰介
てんかん研究 25(4), 441-449, 2008-01-31
… 2番目のエピソードではlucid intervalを経て時間感覚の異常、高揚気分、夢様状態、強い不安・恐怖感を呈した。 …
NAID 110006646622

大規模災害時の災害医療と神経損傷(<特集>神経外傷治療の最新動向)

高里良男
脳神経外科ジャーナル 16(1), 36-42, 2007-01-20
医療の需要と供給のバランスが崩れた災害医療では,現場および医療施設などでの各段階のトリアージに基づく初期治療,搬送が大事であることは論を侯たない.しかし,このような中でも神経外傷については,治療のタイミングさえ間違わなければ,予後の良い意識清明期の急性硬膜外血腫の方が,緊急治療が不要とされる緑のtriage tagのままで悪化を見落とされては困る.また一過性意識消失の緑タグの中で,神経学的続発症を …
NAID 110006152712