Chronotropic

Jump to: navigation, search

WikiDoc Resources for Chronotropic

Articles

Most recent articles on Chronotropic

Most cited articles on Chronotropic

Review articles on Chronotropic

Articles on Chronotropic in N Eng J Med, Lancet, BMJ

Media

Powerpoint slides on Chronotropic

Images of Chronotropic

Photos of Chronotropic

Podcasts & MP3s on Chronotropic

Videos on Chronotropic

Evidence Based Medicine

Cochrane Collaboration on Chronotropic

Bandolier on Chronotropic

TRIP on Chronotropic

Clinical Trials

Ongoing Trials on Chronotropic at Clinical Trials.gov

Trial results on Chronotropic

Clinical Trials on Chronotropic at Google

Guidelines / Policies / Govt

US National Guidelines Clearinghouse on Chronotropic

NICE Guidance on Chronotropic

NHS PRODIGY Guidance

FDA on Chronotropic

CDC on Chronotropic

Books

Books on Chronotropic

News

Chronotropic in the news

Be alerted to news on Chronotropic

News trends on Chronotropic

Commentary

Blogs on Chronotropic

Definitions

Definitions of Chronotropic

Patient Resources / Community

Patient resources on Chronotropic

Discussion groups on Chronotropic

Patient Handouts on Chronotropic

Directions to Hospitals Treating Chronotropic

Risk calculators and risk factors for Chronotropic

Healthcare Provider Resources

Symptoms of Chronotropic

Causes & Risk Factors for Chronotropic

Diagnostic studies for Chronotropic

Treatment of Chronotropic

Continuing Medical Education (CME)

CME Programs on Chronotropic

International

Chronotropic en Espanol

Chronotropic en Francais

Business

Chronotropic in the Marketplace

Patents on Chronotropic

Experimental / Informatics

List of terms related to Chronotropic

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]


Overview

Chronotropic effects (from chrono-, meaning time) are those that change the heart rate.

Chronotropic drugs may change the heart rate by affecting the nerves controlling the heart, or by changing the rhythm produced by the sinoatrial node. Positive chronotropes increase heart rate; however, negative chronotropes decrease heart rate.

A dromotrope affects Atrioventricular node (AV node) conduction. A positive dromotrope increases AV nodal conduction, and a negative dromotrope decreases AV nodal conduction. A lusitrope is an agent that affects diastolic relaxation.

Many positive inotropes affect preload and afterload.

Negative Chronotropes

Chronotropic variables in systolic myocardial performance can be split left and right. Left sided systolic chronotropy can be appreciated as Aortic Valve open to close time. Right sided variables are represented by Pulmonary valve open to close time. Inverted as diastolic chronotropy, the variables are aortic valve close to open and pulmonic close to open time. Pharmaceutical manipulation of chronotropic properties was perhaps first appreciated by the introduction of digitalis.

Positive Chronotropes

de:Chronotropie uk:Хронотропний ефект



Linked-in.jpg