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2016 ; 19
(1
): 7-13
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Usefulness of US imaging in overhydrated nephropathic patients
#MMPMID26941871
Prencipe M
; Granata A
; D'Amelio A
; Romano G
; Aucella F
; Fiorini F
J Ultrasound
2016[Mar]; 19
(1
): 7-13
PMID26941871
show ga
Achievement of a normal hydration status is one of the major targets of
hemodialysis. It is based on the estimation of "dry weight", the term used to
define normal body fluid content. The concept of dry weight in hemodialysis
patients is clinically undisputed, but it is not always easy to achieve in this
population. Assessment of hydration status by clinical evaluation is imprecise
and often unreliable. Measurement of the inferior vena cava (IVC) diameter has
been shown to reflect individual fluid status. The relationship between variation
in IVC diameter before and after hemodialysis session and weight loss has been
investigated. Ultrasound (US) measurement of the IVC diameter is considered a
valid measure of the hydration status and is routinely used in hemodialysis
patients. Moreover, a relationship between IVC diameter, respiratory activity and
hydration status, evaluated by considering both plasma volume and central venous
pressure, has been demonstrated. In conclusion, assessment of hydration status
based on blood pressure and central venous pressure can be considered reliable
only in patients without signs of heart failure.