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Titolo:
Relationship between central venous pressure and bioimpedance vector analysis in critically ill patients
Autore:
Piccoli, A; Pittoni, G; Facco, E; Favaro, E; Pillon, L;
Indirizzi:
Univ Padua, Ist Med Interna, I-35128 Padua, Italy Univ Padua Padua ItalyI-35128 ua, Ist Med Interna, I-35128 Padua, Italy Univ Padua, Inst Anesthesiol & Intens Care, I-35128 Padua, Italy Univ Padua Padua Italy I-35128 esiol & Intens Care, I-35128 Padua, Italy
Titolo Testata:
CRITICAL CARE MEDICINE
fascicolo: 1, volume: 28, anno: 2000,
pagine: 132 - 137
SICI:
0090-3493(200001)28:1<132:RBCVPA>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
TOTAL-BODY WATER; BIOELECTRICAL-IMPEDANCE ANALYSIS; SURGICAL PATIENTS; EXTRACELLULAR WATER; WEIGHT; ADULT; HYDRATION; VOLUMES; INDEX;
Keywords:
bioelectrical impedance; electric conductivity; water balance; total body water; central venous pressure; critical care; monitoring;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Piccoli, A Univ Padua, Ist Med Interna, Via Giustiniani 2, I-35128 Padua, Italy Univ Padua Via Giustiniani 2 Padua Italy I-35128 Padua, Italy
Citazione:
A. Piccoli et al., "Relationship between central venous pressure and bioimpedance vector analysis in critically ill patients", CRIT CARE M, 28(1), 2000, pp. 132-137

Abstract

Objective: To assess the relationship between central venous pressure values and bioelectrical impedance vector analysis (BIVA), which may be used ascomplementary methods in the bedside monitoring of fluid status,Design: Cross-sectional evaluation of a consecutive sample. Setting: Intensive care unit of a university hospital. Patients: One hundred and twenty-one consecutive Caucasian, adult patientsof either gender, for whom routine central venous pressure measurements were available. Interventions: None. Measurements and Main Results: Central venous pressure values and impedance vector components (i.e., resistance and reactance) were determined simultaneously, Total body water predictions were obtained from regression equations according to either conventional bioimpedance analysis or anthropometry(Watson and Hume formulas). Variability of total body water predictions was unacceptable for clinical purposes. Central venous pressure values significantly and inversely correlated with individual impedance vector components (r(2) = .28 and r(2) = .27 with resistance and reactance, respectively), and with both vector components together (R-2 = .31), Patients were classified in three groups according to their central venous pressure value: low (0 to 3 mm tig); medium (4 to 12 mm Hg); and high (13 to 20 mm Hg), Three BIVA patterns were considered: vectors within the target (reference) 75% tolerance ellipse (normal tissue hydration); long vectors out of the upper poleof the target (dehydration); and short vectors out of the lower pole of the target (fluid overload). The agreement between BIVA and central venous pressure indications was goad in the high central venous pressure group (93% short vectors), moderate in the medium central venous pressure group (35% normal vectors), and poor in low central venous pressure group (10% long vectors),Conclusions: Central venous pressure values correlated with direct impedance measurements more than with total body water predictions. Whereas central venous pressure values >12 mm Hg were associated with shorter impedance vectors in 93% of patients, indicating fluid overload, central venous pressure values <3 mm Hg were associated with long impedance vectors in only 10% of patients, indicating tissue dehydration. The combined evaluation of intensive care unit patients by BIVA and central venous pressure may he useful in therapy planning, particularly in those with low central venous pressurein whom reduced, preserved, or increased tissue fluid content can be detected by BIVA.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/10/20 alle ore 03:33:22