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Antiarrhythmic_agents

Antiarrhythmic_agents


Arrhythmia, āĻ…āĻ¨েāĻ• āĻ†āĻ—ে āĻŽāĻ¨ে āĻ•āĻ°āĻ¤াāĻŽ āĻļāĻŦ্āĻĻেāĻ° āĻ†āĻ—ে A āĻŽাāĻ¨ে āĻšāĻ˛ 'āĻ¨া', āĻ¤াāĻ‡ Arrhythmia āĻŽাāĻ¨ে āĻšāĻ˛ absent rhythm! āĻĒāĻ°ে āĻšিāĻ¸েāĻŦ āĻ•āĻ°ে āĻĻেāĻ–āĻ˛াāĻŽ absent āĻšāĻ˛ে āĻ¤ো āĻ°োāĻ—ী āĻŽāĻ°ে āĻ­ুāĻ¤ āĻšā§Ÿে āĻ¯াāĻ“ā§ŸাāĻ° āĻ•āĻĨা, āĻ¤াāĻšāĻ˛ে āĻāĻŸা absent āĻšāĻŦে āĻ¨া, āĻāĻ‡ A āĻšāĻŦে abnormal! āĻ†āĻ° āĻāĻ•āĻŸু āĻ—āĻ­ীāĻ°āĻ­াāĻŦে āĻšিāĻ¨্āĻ¤া āĻ•āĻ°āĻ˛ে Absent rhythm (āĻ›āĻ¨্āĻĻ), āĻšাāĻ°্āĻŸāĻŦিāĻŸেāĻ° āĻ•োāĻ¨ āĻ›āĻ¨্āĻĻ āĻ¨াāĻ‡, āĻāĻ‡ āĻ†āĻ¸্āĻ¤ে āĻ¤ো āĻāĻ‡ āĻœোāĻ°ে!

āĻ¤ো āĻāĻ‡ abnormal rhythm āĻĒ্āĻ°াā§ŸāĻļāĻ‡ heart āĻ āĻĒাāĻ“ā§Ÿা āĻ¯াā§Ÿ, āĻ•াāĻ°āĻŖ heart āĻāĻ•āĻŸা electrical organ! electrical organ āĻšāĻ“ā§ŸাāĻ° āĻ•াāĻ°āĻŖ āĻ•িāĻ¨্āĻ¤ু āĻļুāĻ§ু electricity āĻ¨া, āĻ¸াāĻĨে electrolyte āĻ“ āĻ†āĻ›ে। āĻ†āĻ° āĻāĻ‡ electrolyte imbalance āĻšāĻ˛েāĻ‡ āĻļāĻ°ীāĻ°েāĻ° āĻŦিāĻ­িāĻ¨্āĻ¨ āĻœāĻŸিāĻ˛āĻ¤াāĻ° āĻ¸াāĻĨে heart āĻāĻ“ āĻœāĻŸিāĻ˛āĻ¤া āĻĻেāĻ–া āĻ¯াā§Ÿ।

Heart āĻāĻ° action potential āĻ āĻœেāĻ¨েāĻ›ি āĻ¸েāĻ–াāĻ¨ে Na K Ca āĻāĻ° āĻ•িāĻ›ু āĻ†āĻĻাāĻ¨ āĻĒ্āĻ°āĻĻাāĻ¨ āĻ†āĻ›ে। āĻ¯েāĻŽāĻ¨ Na ECF āĻ āĻŦেāĻļি, āĻ†āĻ° K āĻŦেāĻļি Cell āĻ। Na āĻ¯āĻ–āĻ¨ ECF āĻĨেāĻ•ে Cell āĻ āĻ¯াā§Ÿ āĻ¤āĻ–āĻ¨ depolarization āĻšā§Ÿ, āĻ†āĻ° K āĻ¯āĻ–āĻ¨ Cell āĻĨেāĻ•ে ECF āĻ āĻŦেāĻ° āĻšā§Ÿ āĻ¤āĻ–āĻ¨ repolarization āĻšā§Ÿ। āĻāĻ‡ depolarization āĻ“ repolarization āĻāĻ° āĻŽাāĻে āĻāĻ•āĻŸা āĻ¸āĻŽāĻ¤āĻ˛ plateu phase āĻ†āĻ›ে, āĻ¯েāĻ–াāĻ¨ে K Cell āĻĨেāĻ•ে ECF āĻ āĻ†āĻ¸ে, āĻ†āĻ° āĻ¸েāĻŸাāĻ•ে āĻŦ্āĻ¯াāĻ˛েāĻ¨্āĻ¸ āĻ•āĻ°āĻ¤ে Ca āĻ¯াā§Ÿ ECF āĻĨেāĻ•ে Cell āĻ, āĻĻুāĻŸো āĻŽিāĻ˛ে āĻ¸āĻŽাāĻ¨ āĻ¸āĻŽাāĻ¨!

āĻ‰āĻĒāĻ°েāĻ° āĻ˜āĻŸāĻ¨া āĻ‰āĻ˛āĻŸ āĻĒাāĻ˛āĻŸ āĻšāĻ˛েāĻ‡ heart āĻāĻ° rhythm āĻ“ āĻ‰āĻ˛āĻŸ āĻĒাāĻ˛āĻŸ āĻšā§Ÿে āĻ¯াā§Ÿ, āĻšā§Ÿ cardiac arrhythmia.

āĻ†āĻ° āĻ¤াāĻ‡ arrhythmia āĻāĻ° āĻšিāĻ•িā§ŽāĻ¸াā§Ÿ āĻ…āĻ¨েāĻ• āĻ•িāĻ›ুāĻ° āĻ¸াāĻĨে āĻ‰āĻĒāĻ°েāĻ° āĻ“āĻ‡ āĻš্āĻ¯াāĻ¨েāĻ˛ āĻ—ুāĻ˛োāĻ° blocker āĻŦ্āĻ¯āĻŦāĻšাāĻ° āĻ•āĻ°া āĻšā§Ÿ, āĻ¯েāĻŽāĻ¨-
- Na channel blocker
- K channel blocker
- Ca channel blocker
āĻ†āĻ° āĻāĻ‡ electrical activity āĻļুāĻ§ু electrolyte āĻĻিā§ŸেāĻ‡ āĻšā§Ÿ āĻ¨া, āĻ¸াāĻĨে āĻ†āĻ›ে autonomic nervous activity āĻŦিāĻļেāĻˇ āĻ•āĻ°ে sympathetic, āĻ¤াāĻ‡ āĻ¸েāĻŸা āĻŦ্āĻ˛āĻ• āĻ•āĻ°āĻ¤ে āĻŦ্āĻ¯āĻŦāĻšৃāĻ¤ āĻšā§Ÿ-
- Beta blocker

āĻ¤াāĻšāĻ˛ে āĻ¸āĻŦ āĻŽিāĻ˛িā§Ÿে āĻŽোāĻŸ āĻšাāĻ° āĻĒ্āĻ°āĻ•াāĻ° blocker, āĻ¯াāĻĻেāĻ° āĻšাāĻ°āĻŸা class āĻ āĻ­াāĻ— āĻ•āĻ°া āĻšā§Ÿ-
Class 1: Na channel blocker
Class 2: Beta blocker
Class 3: K channel blocker
Class 4: Ca channel blocker

Class 1: Na channel blocker
āĻāĻ°া Na channel āĻ•ে āĻŦ্āĻ˛āĻ• āĻ•āĻ°ে action potential duration āĻ•ে āĻŦাā§œাā§Ÿ, āĻ•āĻŽাā§Ÿ āĻŦা āĻ…āĻĒāĻ°িāĻŦāĻ°্āĻ¤িāĻ¤ āĻ°াāĻ–ে। āĻ¤িāĻ¨ āĻ°āĻ•āĻŽ āĻ•াāĻœ āĻ•āĻ°ে āĻŦিāĻ§াā§Ÿ āĻāĻĻেāĻ° āĻ†āĻŦাāĻ° āĻ¤িāĻ¨āĻ­াāĻ—ে āĻ­াāĻ— āĻ•āĻ°া āĻ¯াā§Ÿ-

1a: action potential duration āĻŦাā§œাā§Ÿ।
> Queen Proclaimed Pyramid
Quinidine
Procainamide
Disopyramide

1b: action potential duration āĻ•āĻŽাā§Ÿ।
> Linda's Mexican Toffee
Lidocaine
Mexiletine
Tocainamide

1c: action potential duration āĻ…āĻĒāĻ°িāĻŦāĻ°্āĻ¤িāĻ¤ āĻ°াāĻ–ে, āĻ•িāĻ¨্āĻ¤ু āĻ…āĻ¨্āĻ¯ āĻĒāĻ°িāĻŦāĻ°্āĻ¤āĻ¨ āĻšā§Ÿ।
> More Fries Please
Moricizine
Flecainide
Propafenone

Class 2: Beta blocker
> MBA
Metoprolol
Bisoprolol
Atenolol

Class 3: K channel blocker
K cell āĻāĻ° āĻŦাāĻ‡āĻ°ে āĻŦেāĻ° āĻšāĻ¤ে āĻĒাāĻ°āĻŦে āĻ¨া, āĻāĻ¤ে repolarization āĻļুāĻ°ু āĻšāĻŦে āĻ¨া, āĻĢāĻ˛ে action potential duration āĻŦাā§œāĻŦে।
> AIDS
Amiodarone
Ibutilide
Dronedarone
Sotalol

Class 4: Ca channel blocker
āĻāĻ°া centrally acting, āĻĢāĻ˛ে heart rate āĻ•āĻŽে।
> āĻĻুāĻŸো āĻĒāĻ°িāĻšিāĻ¤ āĻ¨াāĻŽ
Verapamil
Diltiazem

āĻ‰āĻĒāĻ°ে āĻ¯া āĻĒā§œেāĻ›ি āĻ¤াāĻ° āĻŽāĻ§্āĻ¯ে  Amiodarone āĻāĻ•āĻŸু āĻ¸্āĻĒেāĻļাāĻ˛, āĻ¤াāĻ° āĻāĻ•āĻŸা āĻ•াāĻ°āĻŖ āĻāĻ¤ে āĻĒ্āĻ°āĻšুāĻ° iodine āĻĨাāĻ•ে āĻ¯া thyroxine production āĻŦাā§œাā§Ÿ। āĻ†āĻ° āĻĻুāĻ‡, āĻ¤āĻ°āĻ•াāĻ°ীāĻ¤ে āĻ†āĻ˛ুāĻ° āĻŽāĻ¤ āĻ¤াāĻ•ে āĻ¸āĻŦ āĻļ্āĻ°েāĻŖীāĻ¤েāĻ‡ āĻĢেāĻ˛া āĻ¯াā§Ÿ!

anti arrhythmic drug āĻšিāĻ¸েāĻŦে āĻ†āĻŽāĻ°া āĻ†āĻ°ো āĻ•িāĻ›ু āĻāĻœেāĻ¨্āĻŸ āĻŦ্āĻ¯āĻŦāĻšাāĻ° āĻ•āĻ°ি, āĻ•িāĻ¨্āĻ¤ু āĻ¤াāĻ°া āĻ‰āĻĒāĻ°েāĻ° āĻ•োāĻ¨ āĻŽেāĻ•াāĻ¨িāĻœāĻŽেāĻ‡ āĻ•াāĻœ āĻ•āĻ°ে āĻ¨া। āĻ¤াāĻ°া āĻšāĻ˛-
Adenosine
Ibavradine
Digoxin (āĻŦেāĻļ āĻ¸্āĻĒেāĻļাāĻ˛ āĻ“āĻˇুāĻ§, āĻ•াāĻ°āĻŖ āĻ‰āĻĒāĻ°েāĻ° āĻ…āĻ§িāĻ•াংāĻļāĻ—ুāĻ˛ো heart failure āĻ āĻĻেāĻ“ā§Ÿা āĻ¯াā§Ÿ āĻ¨া, āĻ•াāĻ°āĻŖ āĻ¤াāĻ°া heart rate āĻ“ cardiac output āĻĻুāĻŸোāĻ‡ āĻ•āĻŽাā§Ÿ। āĻ†āĻ° digoxin āĻļুāĻ§ু heart rate āĻ‡ āĻ•āĻŽাā§Ÿ āĻ•িāĻ¨্āĻ¤ু cardiac output āĻ•āĻŽাā§Ÿ āĻ¨া!)

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