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Cardio
Cardio
Cardio
Cardio
Diferenta dintre FA cu sindrom WPW si FA fara sindrom WPW
NAV are functia de a bloca o mare parte din furtuna de semnale ce vin din atriu, astfel o FA simpla rapida poate avea o frecventa atriala de pana la 500-600 bpm in timp ce complexele QRS nu vor depasi frecventa de 150-200. In plus toate complexele vor avea aceeasi morfologie (inguste) fara unde delta (neexistand o cale accesorie nu exista sindrom de preexcitatie). In FA asociata cu WPW, existenta caii accesorii va permite mai multor unde de depolarizare sa iasa din atriu in ventricul (in afara de cele care ies prin NAV) astfel frecventa depolarizarilor ventriculare poate creste pana la 250-300, iar morfologia complexelor QRS va fi variabila: undele care intra prin calea accesorie vor prezenta unda delta (QRS alungit) iar cele care vor intra prin NAV nu (QRS ingust) => si intervalul PR va fi variabil (scurt/normal)
Cardio
Ce se intampla daca dai beta blocante, blocante de calciu, adenozina sau amiodarona in FA asociata cu WPW?
Inhibitia NAV a acestor medicamente va redirectiona mai multe unde prin calea accesorie cu posibilitatea aparitiei fibrilatiei ventriculare.
Cardio
Elemente EKG in flutter atrial tipic (antiorar):
Unde P negative cu aspect in dinti de fierastrau + absenta liniei izoelectrice in derivatiile inferioare (DII DIII aVF)
Unde P pozitive cu segmente izoelectrice prezente in V1
Frecventa atriala 250-350
Cardio
Elemente EKG in flutter atrial tipic inversat (orar)
Unde P pozitive de obicei fara aspect in dinti de fierastrau + absenta liniei izoelectrice in derivatiile inferioare (DII DIII aVF)
Unde P negative si alungite in V1
Frecventa atriala 250-350
Cardio
In ce conditii patologice apare tahicardia sinusala?
-boala ischemica
-pericardita
-miocardita
-colaps cu hT
-soc
-boli acute febrile
-boli pulmonare cronice
-hipertiroidie
-insuf renala
-avc
Cardio
Etiologie ESA:
fumat, alcool, cofeina, stress, miocardita, ischemie atriala, hipoxie cronica
Cardio
etiologie tahicardia jonctionala neparoxistica:
supradozaj digitalic
congenitala
miocardita
RAA cu cardita
IMA inferior
chirurgia valvei mitrale
poate sa se instituie dupa tratamentul digitalic al fibrilatiei atriale cronice
Cardio
Indicatii la cardioversie in FA:
-FA paroxistica sau recenta <6luni-1an
-AS cu diametru < 45-50mm
-FEVS > 40%
-fara tromboze AS/AAS
-fara tratament digitalic sau cu verapamil
-dupa anticoagulare sau verificare trombi
Cardio
Conversie la RS farmacologica in FA:
-amiodarona
-flecainida
-ibutilida
-propafenona
-vernakalant
-chinidina
+- digoxin, betablocante, calciu blocante
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