While the exact pathogenesis of Intradialytic hypertension remains to be determined, several mechanisms were proposed to be involved. The main factors to determine the arterial blood pressure are the peripheral vascular resistance and cardiac output. The assumption is that the increase of blood pressure is related to the increase in peripheral vascular resistance during the dialysis session, due to fluid removal and fast reduction of the intravascular volume reduction. Using the NICAS device (Non-Invasive Cardiac System), the hemodynamic profile in patients with intradialytic hypertension will be evaluated
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Peripheral vascular resistance (dyne/sec/cm5)
Timeframe: During 3 consecutive hemodialysis session in one week
Stroke volume (ml)
Timeframe: During 3 consecutive hemodialysis session in one week
Stroke index (ml/m2)
Timeframe: During 3 consecutive hemodialysis session in one week
Cardiac output (l/min)
Timeframe: During 3 consecutive hemodialysis session in one week
Cardiac index (l/min/m2)
Timeframe: During 3 consecutive hemodialysis session in one week
Heart rate (bpm)
Timeframe: During 3 consecutive hemodialysis session in one week
blood pressure (mm/Hg)
Timeframe: During 3 consecutive hemodialysis session in one week