nervus vagus
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Nervus vagus. Sólveig Kristín Guðnadóttir. Flakkarinn. Anatomia N. vagus. 4 kjarnar í heilastofni Nucleus N. Trigeminus. Nucleus solitarius Dorsal motor nucleus Nucleus ambiguus 2 ganglion Superior Inferior. 4 gerðir taugaþráða Somatic afferent Visceral afferent Parasymphatic - PowerPoint PPT PresentationTRANSCRIPT
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Nervus vagusNervus vagusSólveig Kristín Guðnadóttir
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FlakkarinnFlakkarinn
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Anatomia N. vagus.Anatomia N. vagus.4 kjarnar í
heilastofni◦ Nucleus N.
Trigeminus. ◦ Nucleus solitarius◦ Dorsal motor
nucleus◦ Nucleus ambiguus
2 ganglion◦ Superior◦ Inferior
4 gerðir taugaþráða◦ Somatic afferent◦ Visceral afferent◦ Parasymphatic◦ Motor efferent
Margar greinar
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Greinar N. vagusGreinar N. vagus Jugular fossa
◦ Meningeal◦ Auricularis
Háls◦ Pharyngeal◦ Superior laryngeal◦ Recurrent laryngeal◦ Superior cardiac
Thorax◦ Inferior cardiac◦ Anterior bronchial◦ Posterior bronchial◦ Esophageal
Abdomen◦ Gastric◦ Celiac◦ Hepatic
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Greinar N. vagusGreinar N. vagus
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Dæmi um vagus verkunDæmi um vagus verkunHöfuðverkurSkyn í ytra eyra. Hóstaviðbragð
vegna aðskotahluts í eyra.KyngingBragðskynTalHóstaviðbragð vegna ertingar í
larynxHikstiPariestalsis meltingarfæraHjartsláttartíðniÖndun
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Lesionir á N. vagusLesionir á N. vagusSjaldan einangraðar lesionir á
vagusVagus greinar geta t.d. skemmst
við aðgerðir á thyroid.◦Pharyngeal grein – dysphagia, tap á
kokreflex◦Superior laryngeal – veikburða rödd◦Recurrent laryngeal – hæsi og
dysphonia Bilateralt: Aphonia og stridor við innöndun
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Vasovagal syncopeVasovagal syncopeOfvirkni í vagal taug → Bradycardia
og vasodilation → ↓Cardiac Output og ↓ blóðþrýsting →↓ blóðmagn upp í höfuð → syncope.
Algengasta orsök syncopes. Ca 20%Talið vera orsök syncopa hjá
börnum í 50% tillfella sem koma á bráðamóttöku.
Flestir finna fyrir prodromal einkennum s.s. svima, ógleði, sortnar fyrir augum.
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Vasovagal syncopeVasovagal syncopeÝmislegt sem getur komið þessu af
stað s.s. hósti, andlegt áreiti, Recurrent í 3% tilfella. Meðhöndlun
◦Fyrirbyggjandi◦Lyf
Atrópín og skyld lyf Beta blokkar
Stundum hægt að framkalla með Vagal maneuvers.
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Vagal maneuversVagal maneuversVagal viðbrögð nýtt til að:
◦Greina Carotis sinus hypersensitivity◦Meðhöndla SVT.
Ýmsar aðferðir◦Carotis sinus nudd◦Valsalva maneuver◦Andlitsbað
Þarf að hafa vagal áhrif í huga
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Vasovagal syncope???Vasovagal syncope???
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TAKK FYRIRTAKK FYRIR
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