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{{Short description|Scale of cardiac health}}
The '''New York Heart Association (NYHA) Functional Classification''' provides a simple way of classifying the extent of [[congestive heart failure|heart failure]]. It places patients in one of four categories based on how much they are limited during physical activity; the limitations/symptoms are in regard to normal breathing and varying degrees in [[shortness of breath]] and/or [[angina]].

It originated in 1928,<ref>{{Cite web|title=Classification of Functional Capacity and Objective Assessment|url=https://professional.heart.org/en/guidelines-and-statements/classification|access-date=2021-03-20|website=professional.heart.org|language=en}}</ref> when no measurements of cardiac function were possible, to provide a common language for physicians to communicate. Despite difficulties in applying it, such as the challenge of consistently classifying patients in class II or III,<ref>{{cite journal|vauthors=Raphael C, Briscoe C, Davies J, Ian Whinnett Z, Manisty C, Sutton R, Mayet J, Francis DP|title=Limitations of the New York Heart Association functional classification system and self-reported walking distances in chronic heart failure.|journal=Heart|date=April 2007|volume=93|issue=4|pages=476–82|pmid=17005715|doi=10.1136/hrt.2006.089656|pmc=1861501}}</ref> because functional capacity is such a powerful determinant of outcome, it remains arguably the most important [[prognosis|prognostic marker]] in routine clinical use in heart failure today. With time the classification system evolved and updated multiple times. Presently, the ninth edition of the NYHA classification is being used in the clinical practice released in the year 1994 by the Criteria Committee of the American Heart Association, New York City Affiliate.<ref>{{cite book|last=The Criteria Committee of the New York Heart Association.|title=Nomenclature and Criteria for Diagnosis of Diseases of the Heart and Great Vessels.|year=1994|edition=9th|publisher=Little, Brown & Co|location=Boston|pages=253–256}}</ref>

{| class="wikitable"
!NYHA Class
!Symptoms
|-
|align="center"|I
|Presence of cardiac disease. No limitation of physical activity. Ordinary physical activity does not cause undue fatigue, [[palpitation]], [[dyspnea]] (shortness of breath).
|-
|align="center"|II
|Slight limitation of physical activity. Comfortable at rest. Ordinary physical activity results in fatigue, palpitation, dyspnea.
|-
|align="center"|III
| Marked limitation of physical activity. Comfortable at rest. Less than ordinary activity causes fatigue, palpitation, or dyspnea.
|-
|align="center"|IV
| Unable to carry on any physical activity without discomfort. Symptoms of heart failure at rest. If any physical activity is undertaken, discomfort increases.
|}

Another frequently used functional classification of [[cardiovascular disease]] is the [[Canadian Cardiovascular Society grading of angina pectoris]].

==See also==
* [[Canadian Cardiovascular Society grading of angina pectoris]]
* [[European Heart Rhythm Association score of atrial fibrillation]]

== References ==
{{reflist}}

[[Category:Diagnostic cardiology]]

New York Heart Association Functional Classification - Revision history

imported>Plorpy at 03:32, 21 January 2024