Rapid repolarization Plateau Depolarization Resting potential Final repolarization
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Rapid repolarization Plateau Depolarization Resting potential Final repolarization
Rapid repolarization Plateau Depolarization Final repolarization Absolute refractory period Relative refractory period Threshold potential Spontaneous depolarization Resting membrane potential
The cardiac action potential
IA Disopyramide Procainamide Ajmaline Quinidine IB Lidocaine Mexiletine Phenytoin IC Propafenone (p. o. ; i. v. inf. – флебит) Flecainide НЛР: Брадикардия, AV блок, (-) инотропен ефект, СЧ смущения, обриви.
Cinchona succirubra • Quinidine (Chinidine®) • Quinine (Chinine®) Rauwolfia serpentina • Ajmaline • Reserpine
Treatment: Lidocaine, Ajmaline
Ventricular fibrillation (камерно мъждене characterized by irregular undulations without clear ventricular complexes.
Ventricular flutter (камерно трептене), a ventricular tachyarrhythmia characterized electrocardiographically by smooth undulating waves with QRS complexes merged with T waves a rate of approximately 250 per minute. If untreate usually progresses to ventricular fibrillation. Ventricular flutter (камерно трептене)
Torsades de Pointes: Treatment Treat hypokalemia if it is the precipitating factor and adm magnesium sulfate in a dose of 2– 4 g i. v. initially. Magnesium is usually very effective, even in the patient w normal magnesium level. If this fails, repeat the initial dos because of the danger of hypermagnesemia (depression neuromuscular function) the patient requires close monit Otherapies include overdrive pacing and isoprenalin Most (75– 82%) torsade de pointes rhythms are started by pause. Pacing at rates up to 140 bpm may prevent the ven pauses that allow torsade de pointes to originate. The patient with torsade who is in extremis should be trea with electrical cardioversion or defibrillation. See: http: //emedicine. medscape. com/article/760667 -tr
Digitalis purpurea (foxglove) Digitoxin Phenytoin Potassium chloride Magnesium aspartate • Digoxinspecific FAB (Fragment Anti. Body): Digibind (38 mg connect 0, 5 mg Digoxin) Digitalis lanata III. ААЛ при дигиталисова интоксик Digoxin
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- Depolarization and repolarization
- Hyperpolarization
- Depolarization and repolarization
- Pacemaker potential
- Depolarization and repolarization
- Action potential resting potential
- Source of bioelectric potential isin nature.
- Axon hillock
- Action potential depolarization
- The resting membrane potential of a neuron is
- Potencial de acción
- Skeletal muscle contraction steps
- Generation of action potential
- A&p flix activity: generation of an action potential
- Eqion
- Depolarization
- Depolarization factor
- Function of voltage gated sodium channel
- Depolarization
- Ekg axis
- Atp action potential
- Depolarization vs polarization
- What causes depolarization of a neuron
- Delay after depolarization
- Sensory
- Hyper vs depolarization
- Endocrine parts
- Action potential threshold
- 再分極
- Atrial repolarization
- Repolarization
- Atrial repolarization
- Bernoulli's equation conservation of energy
- Electric potential
- Osmotic potential vs water potential
- Water potential and osmotic potential
- Electric potential of dipole
- Graded potential definition
- Hypopolarization
- Equipotential lines