PMID- 16863893
OWN - NLM
STAT- MEDLINE
DCOM- 20060831
LR  - 20060725
IS  - 0147-9563 (Print)
IS  - 0147-9563 (Linking)
VI  - 35
IP  - 4
DP  - 2006 Jul-Aug
TI  - The New York Heart Association Classes and functional status: what are we really 
      measuring?
PG  - 217-24
AB  - The New York Heart Association (NYHA) Classes are used to appraise the status of 
      patients with heart disease and evaluate treatment outcomes in clinical and 
      research settings. Ambiguity exists concerning the construct the Classes 
      represent and the optimal way to capture and interpret the information. This 
      article examines the NYHA Classes within the context of a published functional 
      status framework by Leidy. The framework proposes that (1) physiological 
      indicators provide information on capacity, (2) physical activity characterizes 
      performance, and (3) symptoms accompanying activity offer insight into reserve. 
      It is proposed that the NYHA Classes provide a summary statement of both the 
      reduction in reserve accompanying a decline in capacity and the concomitant 
      increase in capacity utilization required to maintain performance in patients 
      with heart disease. This premise is illustrated quantitatively through secondary 
      analysis of data from 22 patients with ischemic heart disease and left 
      ventricular dysfunction.
FAU - Miller-Davis, Claiborne
AU  - Miller-Davis C
AD  - Mark O. Hatfield Clinical Research Center, National Institutes of Health, 
      Bethesda, Maryland 20892, USA.
FAU - Marden, Sue
AU  - Marden S
FAU - Leidy, Nancy Kline
AU  - Leidy NK
LA  - eng
PT  - Journal Article
PT  - Review
PL  - United States
TA  - Heart Lung
JT  - Heart & lung : the journal of critical care
JID - 0330057
SB  - IM
MH  - Heart Diseases/*classification/physiopathology
MH  - Humans
MH  - New York
MH  - Severity of Illness Index
MH  - *Societies, Medical
MH  - Ventricular Function/*physiology
RF  - 38
EDAT- 2006/07/26 09:00
MHDA- 2006/09/01 09:00
CRDT- 2006/07/26 09:00
PHST- 2005/08/16 00:00 [received]
PHST- 2006/01/17 00:00 [accepted]
PHST- 2006/07/26 09:00 [pubmed]
PHST- 2006/09/01 09:00 [medline]
PHST- 2006/07/26 09:00 [entrez]
AID - S0147-9563(06)00032-X [pii]
AID - 10.1016/j.hrtlng.2006.01.003 [doi]
PST - ppublish
SO  - Heart Lung. 2006 Jul-Aug;35(4):217-24. doi: 10.1016/j.hrtlng.2006.01.003.