Pharma-Arrhythmias Q1
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Questions and Answers

network of cells connected by gap junctions

syncytium

when its not possible to generate AP?

in ERP (effective refractory period).

how do we classify dysrhythmia?

based on location and rate. location: super ventricular>atrial, or ventricular>AV node. rate can be tachycardia, or bradycardia.

what we call the ( irregular) tachycardia

<p>Fibrillation</p> Signup and view all the answers

what we call the (regular) tachycardia?

<p>flutter (atria).</p> Signup and view all the answers

bradycardia is associated with?

<p>heart block or arrest.</p> Signup and view all the answers

chronotropic?

<p>altering the rate of the heart.</p> Signup and view all the answers

altering the strength of heart (contraction) is called

<p>inotropic</p> Signup and view all the answers

property of heart cells to generate spontaneous/its own AP.

<p>Automaticity.</p> Signup and view all the answers

what's Ectopic beats?

<p>where APs are generated in the wrong place (without receiving signals from nodes)</p> Signup and view all the answers

Flashcards

Syncytium

A network of interconnected cells, typically cardiac muscle cells, joined by gap junctions that allow for rapid transmission of electrical signals.

Effective Refractory Period (ERP)

The period immediately following an action potential during which a cell cannot generate another action potential.

Dysrhythmia Classification

Categorization of heart rhythm abnormalities based on the location (atrial/ventricular) and rate (tachycardia/bradycardia).

Fibrillation

An irregular, rapid heartbeat due to uncoordinated electrical activity in the heart.

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Flutter

A regular but rapid heartbeat.

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Bradycardia

A slow heart rate.

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Chronotropy

Altering the heart rate

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Inotropy

Altering the strength of heart contraction

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Automaticity

The ability of specialized heart cells to initiate their own action potentials.

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Ectopic Beats

Heartbeat originating from an abnormal site in the heart, outside the normal conduction pathway.

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