heartmate ii left ventricular assist device lvad n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
HeartMate II Left Ventricular Assist Device (LVAD) PowerPoint Presentation
Download Presentation
HeartMate II Left Ventricular Assist Device (LVAD)

Loading in 2 Seconds...

play fullscreen
1 / 29

HeartMate II Left Ventricular Assist Device (LVAD) - PowerPoint PPT Presentation


  • 1327 Views
  • Uploaded on

HeartMate II Left Ventricular Assist Device (LVAD). University of Washington Medical Center. BACKGROUND. Ventricular assist devices (VADs) are a proven therapy as bridge-to-cardiac transplantation in Class IIIB and Class IV heart failure patients

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'HeartMate II Left Ventricular Assist Device (LVAD)' - kory


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
heartmate ii left ventricular assist device lvad

HeartMate II Left Ventricular Assist Device (LVAD)

University of Washington Medical Center

background
BACKGROUND
  • Ventricular assist devices (VADs) are a proven therapy as bridge-to-cardiac transplantation in Class IIIB and Class IV heart failure patients
  • The dramatic increase in the use of VADs has been unavoidable for those patients suffering end-stage heart failure due to the consistent shortage of donor organs
  • As mean support duration for VADs increases, more VAD patients will be living in the community
  • HeartMate LVAD is approved as Destination Therapy (DT)
hm ii candidates
HM II CANDIDATES

FDA Approved 4.21.08

  • Bridge-to-Transplant (BTT)

FDA Approved 1.20.10

  • Destination Therapy (DT)
slide4

HM II

Cored into LV

Outflow to aorta

Percutaneous tube

System Controller

Batteries

function capability
FUNCTION & CAPABILITY
  • Axial (continuous) flow: ?NO PULSE/ ?BP
  • One moving part: Rotor
  • Small
    • 400 gm
    • 125 cc
    • 60% smaller than HM I (XVE)
  • Quiet
  • Flows: 3 – 10 lpm
  • Anticoagulation required
advantages
ADVANTAGES
  • Size: Potential BSA of .8 m2
  • Only one moving part
  • Blood lubricated bearings
  • Designed for long term support
  • Lower infection rates (smaller perc tube)
pump rotor and stators
PUMP ROTOR and STATORS

BLOOD FLOW

Inflow Bearings

Inflow Stator

Outflw Stator

Outflow Bearins

Rotor

slide11

SYSTEM CONTROLLER

Controller + Back-up Controller

power module
POWER MODULE

Supplies main power to LVAD

Provides 30 minutes of backup power

Repeats alarms generated by the System Controller

Serves as the electrical interface between the

System Controller and the Display Module

batteries
BATTERIES
  • 14v Li-Ion
  • 6 – 10 hours of support *Patients report up to 15 hrs of battery power
  • Up to 4 hour recharge for fully discharged battery
  • 3 years or 360 charges
display module
DISPLAY MODULE
  • Pump Mode
    • Fixed
    • Power Saver
  • Pump Speed (rpm)
  • Pulse Index
  • Estimated Flow (lpm)
    • Too low “---”
    • Too high “+++”
  • Power (watts)
  • Alarm Conditions
  • Highest priority displayed
emergency power pack epp
EMERGENCY POWER PACK (EPP)
  • Single use battery pack in a plastic carrying case with a shoulder strap
  • Provides battery power in the event of extended power outage
  • Approximately 12 hours of support
  • Must be replaced if used for a period exceeding three hours
slide18
BATTERY ALARMS

ADVISORY ALARMS

HAZARD ALARM

battery alarms
BATTERY ALARMS

BATTERY < 15 minutes of power

BEEP Q SEC

BATTERY < 5 minutes of power STEADY TONE

Defaults to ‘Power Saver Mode’

  • Pump defaults to Fixed Rate Mode of 8000 rpm, or fixed speed setpoint if lower
  • System will return to set speed once adequate power is restored

ACTION

  • Replace batteries

or switch to alternate power source

system driver cell low voltage
SYSTEM DRIVER CELL LOW VOLTAGE

SYSTEM CONTROLLER CELL LOW VOLTAGE

  • Yellow cell symbol
  • Beep every 4 seconds

ACTION

    • Replace cell battery and perform

System Controller self test

power cable disconnected and flashing
POWER CABLE DISCONNECTED and FLASHING

POWER CABLE DISCONNECTED

  • Flashing green power symbol & battery power bars
  • Beep every second

ACTION

    • Check cable connections to power source
    • Check power leads for damage, replace if necessary
low flow no operation or incorrect operation
LOW FLOW; NO OPERATION or INCORRECT OPERATION

LOW FLOW < 2.5 lpm

  • Pump not operating or not operating correctly
  • Decreased preload (right heart failure, tamponade, hypovolemia, bleeding, etc)
  • Obstruction of pump inflow or outflow
  • Systemic hypertension

ACTION

  • Assess patient
  • Monitor
driveline disconnected from controller
DRIVELINE DISCONNECTED FROM CONTROLLER
  • Check connections

ACTION

  • Reconnect driveline to controller
steady tone and no symbol
STEADY TONE andNO SYMBOL
  • NO POWER TO PUMP

ACTION

  • Check system driver connections to pump
  • Check system driver power connections to power source
  • If persist, seek additional help immediately
vt or vf
VT or VF
  • STABLE
    • Patient may “feel funny” “light headed” or “different”
    • Pump speeds and flows are normal, low normal, or very low
    • Consider cardioversion after consultation with Mechanical Assist Device Coordinator
  • UNSTABLE
    • Patient unresponsive
    • Treat as unstable VT/VF
lvad patient transport
LVAD PATIENT TRANSPORT
  • Transport to UWMC
  • Spare batteries, PBU and the display module should be brought to the hospital with the patient
  • PBU weighs 29 pounds without batteries
  • All modes of emergency transportation are acceptable
  • Aviation electronics will NOT interfere with LVAD and visa versa
slide28

SHAUNA ANDRUS, RN

AMY UNGERLEIDER, RN

JANIE SHIVELY, RN

Mechanical Circulatory Support Coordinator

UNIVERSITY OF WASHINGTON MEDICAL CENTER

24/7 CONTACT

UW PAGING OPERATOR

206.598.6190

Ask for VAD Coordinator On Call

slide29

NAHUSH MOKADAM, MD

Assoc. Director Cardiac Transplant

and

Mechanical Assist Device Programs

UNIVERSITY OF WASHINGTON MEDICAL CENTER