PMID- 25917747 OWN - NLM STAT- MEDLINE DCOM- 20161031 LR - 20181113 IS - 1572-8595 (Electronic) IS - 1383-875X (Linking) VI - 43 IP - 2 DP - 2015 Aug TI - Long-term monitoring of respiratory rate in patients with heart failure: the Multiparametric Heart Failure Evaluation in Implantable Cardioverter-Defibrillator Patients (MULTITUDE-HF) study. PG - 135-44 LID - 10.1007/s10840-015-0007-3 [doi] AB - BACKGROUND: Monitoring respiratory rate (RR) is recommended at the time of hospital presentation for acute decompensation in heart failure (HF). Device-based continuous monitoring of RR may be helpful for diagnostic and prognostic stratification after implantable cardioverter-defibrillator (ICD) implantation. This study was undertaken to analyze short- and long-term changes in ICD-measured RR and to relate RR with the patient's clinical status and the occurrence of HF events. METHODS: One hundred twenty-four consecutive HF patients who received ICD endowed with this diagnostic capability (Boston Scientific Inc., Natick, MA, USA) were prospectively enrolled. Patients were followed up for 12 months. RESULTS: At the baseline, the proportion of New York Heart Association (NYHA) class III-IV was higher among patients with daily maximum RR >27 breaths/min (third tertile) than those with <24 breaths/min (first tertile) (43 vs. 23%, p < 0.05). Moreover, the ejection fraction was lower (27 +/- 7 vs. 34 +/- 8%, p < 0.05). In patients with HF hospitalizations (33 events) and urgent visits for HF (15 events), the weekly average of RR calculated over the 7 days preceding hospital accesses did not differ from values recorded at the baseline and before scheduled follow-up visits. However, the weekly variation in RR (i.e., the difference between maximum and minimum values collected over the week) was significantly higher prior to hospitalization (p < 0.05). A weekly variation >3 breaths/min in maximum RR predicted an impending hospital admission for HF with sensitivity of 73 % and specificity of 57%. CONCLUSIONS: In this study, elevated values of ICD-monitored RR identified patients with worse functional status and lower systolic function. The weekly variation in RR increased before HF exacerbation. This monitoring technology may represent a useful tool in the clinical management of patients with HF. FAU - Forleo, Giovanni B AU - Forleo GB AD - Cardiology, University of Tor Vergata, Viale Oxford, 81., 00133, Rome, Italy, forleo@me.com. FAU - Santini, Luca AU - Santini L FAU - Campoli, Massimiliano AU - Campoli M FAU - Malavasi, Mario AU - Malavasi M FAU - Scaccia, Alberto AU - Scaccia A FAU - Menichelli, Maurizio AU - Menichelli M FAU - Riva, Umberto AU - Riva U FAU - Lamberti, Filippo AU - Lamberti F FAU - Carreras, Giovanni AU - Carreras G FAU - Orazi, Serafino AU - Orazi S FAU - Ribatti, Valentina AU - Ribatti V FAU - Di Biase, Luigi AU - Di Biase L FAU - Lovecchio, Mariolina AU - Lovecchio M FAU - Natale, Andrea AU - Natale A FAU - Valsecchi, Sergio AU - Valsecchi S FAU - Romeo, Francesco AU - Romeo F LA - eng PT - Journal Article DEP - 20150428 PL - Netherlands TA - J Interv Card Electrophysiol JT - Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing JID - 9708966 SB - IM MH - Aged MH - *Defibrillators, Implantable MH - Female MH - Heart Failure/*physiopathology MH - Humans MH - Male MH - Monitoring, Physiologic/*instrumentation MH - Prospective Studies MH - Respiratory Rate/*physiology MH - Sensitivity and Specificity EDAT- 2015/04/29 06:00 MHDA- 2016/11/01 06:00 CRDT- 2015/04/29 06:00 PHST- 2015/01/06 00:00 [received] PHST- 2015/04/06 00:00 [accepted] PHST- 2015/04/29 06:00 [entrez] PHST- 2015/04/29 06:00 [pubmed] PHST- 2016/11/01 06:00 [medline] AID - 10.1007/s10840-015-0007-3 [doi] PST - ppublish SO - J Interv Card Electrophysiol. 2015 Aug;43(2):135-44. doi: 10.1007/s10840-015-0007-3. Epub 2015 Apr 28.