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Intrathoracic impedance monitoring in patients with heart failure: correlation with dehydration and bleeding events


, : Intrathoracic impedance monitoring in patients with heart failure: correlation with dehydration and bleeding events. Circulation Journal 76(11): 2592-2598

Cardiac resynchronization therapy/defibrillators (CRTD) and implantable cardioverter defibrillators (ICD) with continuous intrathoracic impedance monitoring might provide an early warning of thoracic fluid retention. In contrast, volume loss events such as dehydration and bleeding are also common events in heart failure patients treated with diuretics and anticoagulants. The correlation between intrathoracic impedance and a volume loss event is not known. This study evaluated the association between intrathoracic impedance and volume loss events in 36 patients with chronic heart failure (New York Heart Association [NYHA] II, III and IV) who had received CRTD/ICD implantation. Elevation of thoracic impedance above the reference line was defined as a positive deviation of thoracic impedance (PDI). This study recorded 249 PDIs including 60 spike PDIs defined as over 5 ohms elevation from the reference line and 17 large PDIs as over 5 ohms elevation and continuing for at least 4 days. Clinically, 96 dehydration events and 2 bleeding events were observed over a 1-year period. The sensitivity and positive predictive value (PPV) for spike PDI was 31.6% and 51.7%, respectively, while those for large PDI were 17.3% and 100%, respectively. A large PDI reflected dehydration and bleeding events with a high PPV in severe heart failure patients. The large PDI criteria might therefore be useful for predicting volume loss events in chronic heart failure patients.

US$29.90

PMID: 22813787


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McLachlan, S.M., 2003: Graves' disease: the T(H)1/T(H)2 paradigm versus the "hygiene" hypothesis and defective immune regulation. Thyroid 13(2): 127-128

Meyer R.P.; Moore J.R.; Nebrija E.L.; Young C.T., 1976: Geophysical prospecting off Keweenaw Peninsula. Proceedings and Abstracts - Institute on Lake Superior Geology, Annual Meeting 22): 39

Linka, T.; Sartory, G.; Gastpar, M.; Scherbaum, N.; Müller, B.W., 2009: Clinical symptoms of major depression are associated with the intensity dependence of auditory event-related potential components. The intensity (loudness) dependent amplitude change (IDAP) of the auditory event-related potential (ERP) has been shown to be associated with the outcome of treatment with selective serotonin reuptake inhibitors in major depression. The purpose of...

Kuhlmann, F., 1981: Treatment recommendations for lumbago. Zfa. Zeitschrift für Allgemeinmedizin 57(14): 1107-1108

Suter, E., 1952: Multiplication of tubercle bacilli within phagocytes cultivated in vitro, and effect of streptomycin and isonicotinic acid hydrazide. Approx. 100 times greater concns. of streptomycin were required to inhibit intracellular growth of tubercle bacilli in phagocytes than to inhibit extracellular growth in Tween-albumin medium. Minimal inhibitory concns. of isonicotinic acid hydrazi...

Green, P., 1966: Mineralogical and weathering study of a red-brown earth formed on granodiorite. Data from particle-size analysis and Zr distribution indicate relative uniformity of the parent material throughout the profile, with a possible minor disconformity near the bottom of the B horizon. Calculations of gains and losses of major minera...

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Waplington, M.; Lumley, P.J.; Walmsley, A.D., 1995: Sonic instruments in root canal therapy. Although hand instrumentation is considered the most acceptable method of preparing root canals, sonic instruments may be useful additions to the endodontic armamentarium. Sonic instrumentation may be incorporated as an adjunct to traditional tech...

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Spence, R.M.M.; Tucknott, O.G., 1983: The examination of the headspace volatiles of watercress. Volatiles were collected by adsorption on Poropak Q and solvent elution to obtain samples representative of the intact plant material with minimum glucosinolate degradation. Samples taken after 2 and 7 days' trapping as the watercress deterio...