disclosure: morton j. kern, md within the past 12 months ... · disclosure: morton j. kern, md...
Post on 23-Jul-2020
1 Views
Preview:
TRANSCRIPT
Disclosure:
Morton J. Kern, MD
Within the past 12 months, the presenter or their spouse/partner have had a financial interest/arrangement or affiliation with the organization listed below.
Company Name RelationshipRadi Medical Inc. Speakers BureauMerrit Medical Inc. ConsultantBracco Inc. Consultant
LV hemodynamics
Morton J. Kern, MD
Associate Chief CardiologyDirector Clinical Affairs
University California IrvineOrange, California
Common Hemodynamic Problems involving LV pressure measurements
LV Compliance AssessmentMitral StenosisLow Gradient Aortic StenosisHOCMProsthetic Valve DysfunctionDiastolic CHFConstriction v Restriction
Potential Sources of Errors for Pressure Measurements
• Temporal delay of pressure transmission in fluid filled systems
• Nonsimultaneous pressure recordings
• Pressure damping
• Resonance artifact (underdamping)
• Calibration
• Flow dependence
• Effect of catheter across stenotic valve
Fusberg and Feldman T, Cath and CV Int 53:553;2001
Techniques for Aortic Valve Gradient Measurement
• Single Catheter LV-Ao pullback
• LV and Femoral Sheath
• LV and Long aortic sheath
• Bilateral femoral access
• Double-lumen pigtail catheter
• Transeptal LV access with ascending Ao
• Pressure Guidewire with ascending Ao
• Multi-transducer micromanometer catheters
Fusberg and Feldman T, Cath and CV Int 53:553;2001
BAMC Case #3117: Patient: 61 yo maleDx: 3V CAD filter: 50 Hz/ sample 250 Hz
Pre Contrast
Normal LV and Aortic Pressure, micromanometer transducers
Note normal impulse gradient
FA + AO
FA + LV
Most Common Approach to LV-Ao Gradient measurement
High Fidelity LV pressure can be measured with 0.014” pressure wire
Fusberg and Feldman T, Cath and CV Int 53:553;2001
Parham and Kern, Cath and CV Int 53:553;2001
Retrograde hemodynamic Assessment of Prosthetic Valves with a Pressure Wire
Damping and Resonance Artifacts
Abnormal LV Diastolic Relaxation
LV pressure changes with ValsavaManeuver
200mmHg
LV/RV diastolic waveforms reflect differences in compliance, timing of activation and function
100mmHg
40mmHg
LV/RV diastolic waveforms reflect differences in compliance, timing of activation and function
LV Puncture for 2 prosthetic valves
Pigtail
AV
MV
Pigtail
68yo W with 2 prosthetic valves
100mmHg
LVRV
Abnormal LV diastolic relaxation?
Abnormal LV diastolic relaxation?
The LV pressure wave reflects the appropriate or inappropriate transmission of blood
What caused gradient to increase in beat #2?P wave
What does the LV waveform tell us about this patient?
Wide PP, rapid diastolic upslope=AI Coarctation
200
Coarctation of Aorta
Rib Notching
Aortic Stenosis?
Aortic Regurgitation?
Wide Pulse Pressure
Upsloping LV diastolic pressure
Aortic Insufficiency
What is most likely diagnosis?
Aortic Insufficiency
LV/RV Diastolic elevation and equilibration
Constriction or Restriction?
RV/LV DiscordanceConstriction
RV/LV ConcordanceRestriction
Restrictive vs Constrictive?
Hemodynamics in the Cath Lab
•• Valuable diagnostic adjunctValuable diagnostic adjunct•• Confirm or establish many surgically correctableConfirm or establish many surgically correctable
etiologiesetiologies•• Confuse matters if data is poorly or inaccuratelyConfuse matters if data is poorly or inaccurately
collectedcollected•• Critical to teaching and understandingCritical to teaching and understanding
cardiovascular pathologycardiovascular pathology
top related