Aritmii Flashcards

1
Q

Ce curent da curentul de rep mebranar

A

Iki

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2
Q

Potentialul de mb e un proces activ sau pasiv

A

Activ consuma energie

E cu atp

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3
Q

ce ion unde sta

A

K inauntru
Na afara
La vm conductanta pt na e 0

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4
Q

Ce celule au excitabilitate

A

Nervos
Miocard muscular

E necesar intensitate prag pana la potential prag(tot sau nimic)

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5
Q

Cuplare excitatie cu contratie

A

Calciul intra prin canalele sarcolemale de tip l se leaga de receptorii ryr rianodinici de pe reticul sarcoplasmic acesta se deschide si elb calciu.

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6
Q

Pa miocard

A

0 intra natru care s a deschis la un anumit potential (dv/dt cel mai mare)
1 ito k
2 i k si i ca (acum deja e electropozitiv)
3 i k i si ikr? In schema zice ik1 si ikatp
4ik1, background, pompa na k, nxc

Faza 0 devine excitant pt celula urmatoare
Faza 0 are magin of safety si greu ii faci cv

Ikur apare in fia si scurteaza pa

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7
Q

Canale ionice

A
Canale voc
Canale roc
Pompe
Canale schimbatoare
CANALE JONCTIONALE
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8
Q

Scnsa mutatii

A

Brugada

Sdr de qt lung 3

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9
Q

Dc se raspunde asa rpd la manevrele vagale

A

Ptc rec muscarinic cu prot g actioneaza direct transmb

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10
Q

Triggered activity

A

Nu e per se o aritmie dar declaseaza o aritmie

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11
Q

Curenti diastolici

A

Ik1-pt un curent mic e necesar un potential mare. E un curent de stabilizare. Inactiv la valori pozitive si activ la valori negative de potential

If-celula sinusala n are ik1; are efect f mare

Ica

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12
Q

Cum se modif potentialul

A

Scad pragul
Cresc pot de rep
Creste panta faza4

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13
Q

Macrolide si eritromicina

A

Inhiba k

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14
Q

Dispersie de depolarizare

A

Conditia esentiala pt a se face pdp
Celule cu refractariltate diferita
In mijlocul miocardului celulele M au potential mai lung

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15
Q

In sdr de qt lung aspect pdp

A

Unda j proeminenta
Mai ales dupa o ex deoarece determina pauza compensatorie
Daca are si o boala sau medicamente stunci apare pdp

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16
Q

Circuit anatomic reintrare

A

Excitable gate
Ii dai overdrive ca sa opresti reintrarea

Flutterul e asa
Bypass tranc =tracturi de prexcitatie prin scurtcircuite
Orice punkinje reintra la bifurcatieo
Frecventa tine de dimensiunea circ

17
Q

Reintrare functionala

A

Refractaritate f mica in unele zone
E ca un sarpe dar cu miez polarizant
Frecventa tine de refractaritate

Refractaritate mica=>curcuit mic=>frecv mare

Fia!

18
Q

Reintrare anizotropica si spirala

A

Una nu transv

Ceallata caract de axele spatiale

19
Q

Crestere speranta de viata la fia

A

Control acut al frecventei si ritmului
Stil viata
Aco