138fuzia, durerile <strong>de</strong> cap, fatigabilitatea, tulburarile comportamentale sau somnolentanu sunt caracteristice s<strong>in</strong>copei. Se evalueaza nervii cranieni, ROT,<strong>de</strong>ficitele senzoriale. Deficitele neurologice severe pot fi corelate <strong>cu</strong> <strong>s<strong>in</strong>copa</strong>vasopresoare.Pacientul trebuie exam<strong>in</strong>at pentru evi<strong>de</strong>ntierea unor marci traumatice.Trauma poate fi cauza s<strong>in</strong>copei <strong>in</strong> TCC, plagi sau fracturi ale extremitatilor.Leziunile <strong>de</strong> muscare a limbii sunt specifice convulsiilor. Nu trebuie sa uitamsa luam <strong>in</strong> consi<strong>de</strong>rare antece<strong>de</strong>ntele <strong>de</strong> TCC <strong>in</strong>sotite <strong>de</strong> pier<strong>de</strong>rea constientei<strong>in</strong> stabilirea etiologiei s<strong>in</strong>copei.Toti pacientii <strong>cu</strong> <strong>s<strong>in</strong>copa</strong> si anemie necesita un test al hemoragiilor o<strong>cu</strong>lted<strong>in</strong> scaun. Intr-un studiu toti pacientii <strong>cu</strong> anemie si <strong>s<strong>in</strong>copa</strong> au avut testulhemoragiilor o<strong>cu</strong>lte pozitiv.Cateva manevre simple efectuate la “marg<strong>in</strong>ea patului” pot fi utile <strong>in</strong>elucidarea episodului <strong>s<strong>in</strong>copa</strong>l:- manevra Hallpike poate fi efectuata la pacientii care <strong>de</strong>scriu un episods<strong>cu</strong>rt <strong>cu</strong> semne prodromale (vertij), pentru diferentierea <strong>de</strong> vertijul posturalparoxistic benign;- modificarile <strong>de</strong> ortostatism marcate <strong>de</strong> o sca<strong>de</strong>re <strong>cu</strong> peste 20 mm Hg aTA sistolice, o sca<strong>de</strong>re a TA diastolice <strong>cu</strong> 10 mm Hg sau o crestere a FC <strong>cu</strong>peste 20 bpm pot <strong>in</strong>dica o hipotensiune posturala. Bradicardia ple<strong>de</strong>azapentru <strong>s<strong>in</strong>copa</strong> vasovagala;- masajul s<strong>in</strong>ocarotidian a fost folosit <strong>cu</strong> succes <strong>in</strong> diagnosti<strong>cu</strong>l s<strong>in</strong>copeid<strong>in</strong> hiperreflectivitatea s<strong>in</strong>ocarotidiana, dar poate provoca pauza s<strong>in</strong>usalaprelungita sau hipotensiune.EtiologieIn tre<strong>cu</strong>t etiologia s<strong>in</strong>copei se baza pe efectele vasovagale, ortostatice,aritmice, situationale etc. In prezent, <strong>in</strong> functie <strong>de</strong> studii si prognostic <strong>s<strong>in</strong>copa</strong>poate fi:- cardiaca- noncardiaca- idiopatica1. S<strong>in</strong>copa cardiaca poate fi cauza unei afectiuni vas<strong>cu</strong>lare, cardiomiopatii,aritmii, disfunctii valvulare; ECG este esential pentru a face diagnosti<strong>cu</strong>ldiferential <strong>in</strong>tre aceste posibile cauze.• sca<strong>de</strong>rea perfuziei asociata cardiomiopatiilor severe, IC, valvulopatiilorpot duce la hipotensiune si implicit la sca<strong>de</strong>rea globala a fluxuluisangv<strong>in</strong> cerebral. Frecvent acesti pacienti au medicatie care reducepostsarc<strong>in</strong>a, contribu<strong>in</strong>d la producerea s<strong>in</strong>copei;Actualitati <strong>in</strong> anestezie, terapie <strong>in</strong>tensiva si medic<strong>in</strong>a <strong>de</strong> <strong>urgenta</strong>
• aritmiile ventri<strong>cu</strong>lare <strong>cu</strong>m sunt tahicardia ventri<strong>cu</strong>lara, torsada varfurilor,au tend<strong>in</strong>ta sa apara la pacienti varstnici <strong>cu</strong> antece<strong>de</strong>nte cardiace.Acesti pacienti t<strong>in</strong>d sa prez<strong>in</strong>te re<strong>cu</strong>rente si <strong>de</strong>but brusc fara simptomepre<strong>s<strong>in</strong>copa</strong>le si pot asocia dispnee sau durere toracica. Acest tip <strong>de</strong> <strong>s<strong>in</strong>copa</strong>nu este <strong>in</strong> general corelata <strong>cu</strong> postura si poate apare <strong>in</strong> timp cepacientul se odihneste. A<strong>de</strong>seori aceste aritmii nu sunt evi<strong>de</strong>nte pe ECG<strong>in</strong>itial, dar pot fi evi<strong>de</strong>ntiate <strong>in</strong> timpul monitorizarii prelungite;• tahiaritmiile supraventri<strong>cu</strong>lare (TPSV, fibrilatie atriala <strong>cu</strong> ritm rapid,flutter atrial) pot fi asociate <strong>cu</strong> palpitatii, dureri toracice, dispnee. Pacientiiau <strong>de</strong> obicei simptome prodromale si pot prezenta un episod <strong>s<strong>in</strong>copa</strong>l<strong>in</strong> timp ce se ridica d<strong>in</strong> sezut sau merg <strong>de</strong>oarece apare hipotensiuneortostatica. Efectuarea unei ECG poate evi<strong>de</strong>ntia s<strong>in</strong>dromul Wolf-Park<strong>in</strong>son-White,s<strong>in</strong>dromul Brugada, s<strong>in</strong>dromul <strong>de</strong> QT alungit;• bradiaritmiile <strong>in</strong>clud: boala <strong>de</strong> nod s<strong>in</strong>usal, bradicardia s<strong>in</strong>usala, blo<strong>cu</strong>latrioventri<strong>cu</strong>lar <strong>de</strong> grad <strong>in</strong>alt (2, 3), disfunctia <strong>de</strong> pacemaker, reactii adversemedicamentoase. In general, acesti pacienti au antece<strong>de</strong>nte cardiacesi sunt simptomatici. Durerile toracice, dispneea, sca<strong>de</strong>rea toleranteila efort si fatigabilitatea pot fi prezente. Ischemia miocardica si efecteleadverse medicamentoase pot fi consi<strong>de</strong>rate cauze aditionale.• obstructia fluxului cardiac poate duce la un <strong>de</strong>but brusc <strong>de</strong> <strong>s<strong>in</strong>copa</strong>, fieca sunt prezente sau nu simptome prodromale. Uneori apare <strong>in</strong> timpulefortului fizic, alteori se percep sufluri cardiace. Acest tip <strong>de</strong> <strong>s<strong>in</strong>copa</strong>este prezenta la t<strong>in</strong>erii sportivi. Patologia specifica <strong>cu</strong>pr<strong>in</strong><strong>de</strong>: stenozaaortica, cardiomiopatia hipertrofia obstructiva, stenoza mitrala, stenozapulmonara, embolia pulmonara, <strong>in</strong>farctul <strong>de</strong> ventri<strong>cu</strong>l drept si tamponadacardiaca.• <strong>s<strong>in</strong>copa</strong> poate apare si <strong>in</strong> IM sau disectia <strong>de</strong> aorta. Aceste afectiuniasociaza dureri toracice, dureri cervicale, dureri <strong>de</strong> umeri, dureri epigastrice,dispnee, hipotensiune arteriala, alterarea statusului mental si potduce la moarte subita.1392. S<strong>in</strong>copa noncardiaca – poate apare ca raspuns vasovagal la durere,<strong>de</strong>shidratare, afectiuni psihiatrice, cauze neurovas<strong>cu</strong>lare. Aceste cauze t<strong>in</strong>dsa fie benigne si au prognostic bun.- S<strong>in</strong>copa vasovagala – este cea mai frecventa la adultii t<strong>in</strong>eri, dar poateapare la orice varsta. Episodul <strong>s<strong>in</strong>copa</strong>l apare <strong>de</strong> obicei <strong>in</strong> ortostatism sipoate fi precipitat <strong>de</strong> frica, emotii, stres sau durere (dupa o <strong>in</strong>tepatura<strong>de</strong> ac). Simptomele predom<strong>in</strong>ante sunt: greturi, diaforeza, disconfortepigastric, ameteli, care pot prece<strong>de</strong> episodul <strong>s<strong>in</strong>copa</strong>l <strong>cu</strong> cateva m<strong>in</strong>ute.Deshidratarea si sca<strong>de</strong>rea volumului <strong>in</strong>travas<strong>cu</strong>lar duc la hipotensiuneTimisoara 2008