LVAD types - aldmd

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How flow is estimated • Flow is estimated from known: • pump speed • pump power • blood viscosity (hematocrit = HCT) • Accurate flow estimate depends on correct HCT range being entered • Extremely high flows with no apparent cause are suspicious of pump problems Hb (g/L) X 0.3 ~ HCT eg. Hb 100 X 0.3 ~ 30 Hb (g/dL) X 3 ~ HCT eg. Hb 10 X 3 ~ 30 The contents of this document are confidential and are not to be reproduced or made available to third parties without prior consent from Ventracor. Caution: Investigational device - this device is limited by law to investigational use only in the US, Australia and NZ (under Federal Law in the US) Effect of treatments on flow Pump is preload-dependent and afterload-sensitive If preload remains the same but ! afterload, flows " If ! preload and afterload remains the same, flows ! Any treatment which ! cardiac output should ! pump output eg Inotropes, intravascular filling, pacing The contents of this document are confidential and are not to be reproduced or made available to third parties without prior consent from Ventracor. Caution: Investigational device - this device is limited by law to investigational use only in the US, Australia and NZ (under Federal Law in the US) Assistance provided by the pump Flow depends on: • volume (coming into the pump) • pressure (preload and afterload) • speed (of the pump) The contents of this document are confidential and are not to be reproduced or made available to third parties without prior consent from Ventracor. Caution: Investigational device - this device is limited by law to investigational use only in the US, Australia and NZ (under Federal Law in the US) Right Heart Support • Minimize blood products • Blood products = "RV distension "Release of proinflammatory cytokines = PH "RV has to work harder, " difficulty moving blood to LV "liver congestion – cycle "Possibility lead to hypercoaguability • Support right heart with inotropes • Lower right heart afterload The contents of this document are confidential and are not to be reproduced or made available to third parties without prior consent from Ventracor. Caution: Investigational device - this device is limited by law to investigational use only in the US, Australia and NZ (under Federal Law in the US)
Setting pump speed • At low speeds, relief of heart failure symptoms may not be maximized • At high speeds, the risk of ventricular suction is increased • Examine the LV under echocardiography as the speed is changed • Speed adjustments usually made under medical supervision The contents of this document are confidential and are not to be reproduced or made available to third parties without prior consent from Ventracor. Caution: Investigational device - this device is limited by law to investigational use only in the US, Australia and NZ (under Federal Law in the US) Pulsatility Index (PI) • typical range 20-45 (normal range for patient depends on cardiac function) ! contractility = ! PI " contractility = " PI The contents of this document are confidential and are not to be reproduced or made available to third parties without prior consent from Ventracor. Caution: Investigational device - this device is limited by law to investigational use only in the US, Australia and NZ (under Federal Law in the US) Clinical Indices • Pulsatility Index (PI) • Overpumping Index (OI) The contents of this document are confidential and are not to be reproduced or made available to third parties without prior consent from Ventracor. Caution: Investigational device - this device is limited by law to investigational use only in the US, Australia and NZ (under Federal Law in the US) Overpumping Index (OI) • indicates likelihood of overpumping • sudden drops or spikes indicate possible problems • typical values 50-65 The contents of this document are confidential and are not to be reproduced or made available to third parties without prior consent from Ventracor. Caution: Investigational device - this device is limited by law to investigational use only in the US, Australia and NZ (under Federal Law in the US)
Page 1 and 2: VentrAssist Left Ventricular Assist
Page 3 and 4: Outflow cannula Trim to correct len
Page 5: 1 Introduction Wearables The conten
Page 9 and 10: The contents of this document are c
Page 11 and 12: Antibiotic cover • All patients m
Page 13 and 14: Exit site: immobilization Immobiliz
Page 15: Defibrillation Event: • cardiac a

LVAD types - aldmd

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