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from <b>PhysioNet</b>, the research resource for complex physiologic signals
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<main><h1 style="margin-top: 1.75em; padding-top: .4em;">Congestive Heart Failure RR Interval Database</h1><nav id="tocwrapper" style="padding: 1.5em 0 0 0; float: right;"> <!-- id to position toc added by KP, 6 July 2015 -->
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<p>
This database includes beat annotation files for 29 long-term ECG recordings of
subjects aged 34 to 79, with congestive heart failure (NYHA classes I, II, and
III). Subjects included 8 men and 2 women; gender is not known for the
remaining 21 subjects. The original ECG recordings (not available) were
digitized at 128 samples per second, and the beat annotations were obtained by
automated analysis with manual review and correction.</p>
<p>
For additional data of this type, including digitized ECG signals, see
the <a href="../chfdb/index.html">BIDMC Congestive Heart Failure Database</a>.</p>
<p>
We thank Rochelle Goldsmith, of Columbia-Presbyterian Medical Center, New York,
for her generous contribution of these data to PhysioBank.</p>
<h3>References</h3>
<p>
The following studies have made use of these data:</p>
<ol>
<li> Krum H, Bigger JT Jr, Goldsmith RL, Packer M.
<a href="http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T18-3YF4CDD-6T&_coverDate=02%2F28%2F1995&_alid=142748919&_rdoc=1&_fmt=&_orig=search&_qd=1&_cdi=4884&_sort=d&view=c&_acct=C000022659&_version=1&_urlVersion=0&_userid=501045&md5=4c3a86292c2bf9df5bbdc24e1439f4f7" target="other">
Effect of long-term digoxin therapy on autonomic function in patients
with chronic heart failure.</a>
<i>J Am Coll Cardiol</i> 1995; <b>25</b>:289-294.</li>
<li> Goldsmith RL, Bigger JT, Bloomfield DM, Krum H, Steinman RC,
Sackner-Bernstein J, Packer M.
<a href="http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T10-3RH63JF-11&_coverDate=10%2F15%2F1997&_alid=142751779&_rdoc=1&_fmt=&_orig=search&_qd=1&_cdi=4876&_sort=d&view=c&_acct=C000022659&_version=1&_urlVersion=0&_userid=501045&md5=c7e6bda26af47336edf0ab72ced06109" target="other">
Long-term carvedilol therapy increases parasympathetic nervous system
activity in chronic congestive heart failure.</a>
<i>Am J Cardiol</i> 1997; <b>80</b>:1101-1104.</li>
<li> Mietus JE, Peng C-K, Henry I, Goldsmith RL, Goldberger AL.
<a href="http://heart.bmj.com/cgi/content/abstract/88/4/378"
target="other">The pNNx files: re-examining a widely used heart rate
variability measure.</a>
<i>Heart</i> 2002; <b>88</b>:378-380.</li>
</ol>
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