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Titolo:
CEREBROSPINAL-FLUID PRESSURE CHANGES AFTER ACUTE CARBON-MONOXIDE POISONING AND THERAPEUTIC EFFECTS OF NORMOBARIC AND HYPERBARIC-OXYGEN IN CONSCIOUS RATS
Autore:
JIANG J; TYSSEBOTN I;
Indirizzi:
UNIV BERGEN,DEPT PHYSIOL,LAB HYPERBAR MED RES,ARSTADVEIEN 19 N-5009 BERGEN NORWAY
Titolo Testata:
Undersea & hyperbaric medicine
fascicolo: 4, volume: 24, anno: 1997,
pagine: 245 - 254
SICI:
1066-2936(1997)24:4<245:CPCAAC>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
CEREBRAL BLOOD-FLOW; INTRACRANIAL-PRESSURE; BRAIN EDEMA; EXPOSURE; ISCHEMIA; RABBITS;
Keywords:
CARBON MONOXIDE POISONING; CEREBRAL EDEMA; CEREBROSPINAL FLUID PRESSURE; NORMOBARIC OXYGEN; HYPERBARIC OXYGEN; RATS;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
38
Recensione:
Indirizzi per estratti:
Citazione:
J. Jiang e I. Tyssebotn, "CEREBROSPINAL-FLUID PRESSURE CHANGES AFTER ACUTE CARBON-MONOXIDE POISONING AND THERAPEUTIC EFFECTS OF NORMOBARIC AND HYPERBARIC-OXYGEN IN CONSCIOUS RATS", Undersea & hyperbaric medicine, 24(4), 1997, pp. 245-254

Abstract

This study on conscious rats with occluded left carotid artery investigates the influence of cerebral edema after acute carbon monoxide (GO) poisoning on cerebrospinal fluid pressure (CSFp) and evaluates the therapeutic effectiveness of normobaric oxygen (NBO2) and hyperbaric oxygen (HBO2). The CSFp was continuously recorded via a cannula placed in the left cerebral ventricle before, during, and for up to 6 h after exposure to 0.27% CO for 1 h. A non-sustained small increase in the CSFp and identical degrees of hypoxemia, hypocapnia, arterial hypotension, and acidosis were found during the exposure in all rats. After the CO exposure, all non-edema control rats without carotid artery ligation (n = 7) recovered completely with normal CSFp, behavior, and brain water content. All untreated (n = 7) and NBO2-treated rats (n = 7) developed a severely increased CSFp (>50 mmHg) with neurologic motor dysfunction, and died of a severely increased CSFp (>100 mmHg) with considerable cerebellar herniation. Except in one rat, the CSFp did not reacha dangerous level (>25 mmHg) after the HBO2 session (300 kPa O-2 for 1 h, beginning at 20 min post-CO). All HBO2-treated rats (n = 7) survived with less neurologic motor dysfunction and less left hemispheric edema than those in untreated and NBO2-treated rats. The results demonstrated that the increase in the CSFp was related to the left hemispheric edema, and that the cerebellar herniation was the predominant causeof death after the CO exposure. HBO2, but not NBO2, prevented the severe increase in the CSFp and thus saved the life after the CO exposure.

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Documento generato il 01/04/20 alle ore 01:31:55