disclosure statement of financial interest i do not have a ... · i do not have a financial...
TRANSCRIPT
I DO NOT have a financial conflict of interest in the context of this presentation.
Disclosure Statement of Financial Interest
Mavericks Created Modern Cardiology
Mavericks share 3 characteristics:Outside-the-box thinking, disdain for common wisdom, & persistence.
In a time of widespread challenge to conventional wisdom, One man challenges cardiologic teaching
MI mortality is 30% mostly due to CHFSwan challenges conventional Rx [strict bedrest x 3 weeks]His idea: treat aggressively, using bedside hemodynamicsBut CCU MD Danzig finds it impossible: catheter coils in RA
Our Story Begins With Brilliant IngenuityIn Response to Frustration
Genius is seeing what everyone else has seen and thinking what no one else has thought
Inspiration on Santa Monica Beach: sail a catheter into PACCU and cath lab MD’s ridicule idea of sails & wires
Danzig: Irreversible entanglement in chordaeMarcus: imagines it sailing “like a Mary Poppins umbrella”
Mavericks persist in the face of ridicule
Undaunted, Swan takes his idea to Edwards Laboratories’ engineers.
Edward’s engineers’ response to the idea ofa catheter festooned with sails and wires:
It’s unanimous:
Putting Swan’s imagined catheter is a “logistic impossibility”Swan’s idea is dead.
But then…
Mind–Boggling Serendipity: Two Different Ideas CollideIn the Only Place in the World it Could Happen
Fogarty’s catheterSwan’s sailboat
The incandescent stroke of invention
David ChonetteDirector of Edward’s new product development
“Mostly as a [?face-saving?] favor to Jeremy”Chonette attaches a balloon to an infant feeding tubeSends it up to Willie Ganz in Cedars of Lebanon animal lab
The Instant of Invention is Hardly a Eureka Moment
By Now It’s 1969:Diamond & I Do Our First Animal Catheterization
Fluoroscopy: catheter has weaved thru entire right heart to distal PA!What should we do next?
Inserted thru jugular vein: Stuck in the coronary sinus??
So we sterilize our catheter & go directly to our MIRU patient’s bedside
IRB’s don’t exist
Our First-Ever Catheterization In Man:Horrifying Run of Ventricular Tachycardia
Spectacular good luck allows us to eliminate catheter-tip induced tachycardia
Induced by the catheter tip flailing wildly within the RV
Double-lumen Cath Overturns Conventional ThinkingAnd Reveals Things We Never Knew
•The gold standard, CVP, has little value for assessing left heart failure•PCW changes hours, often a day, before rales or chest xray•We discover new entities like RVMI and silent mitral insufficiency
Swan HJC. Catheterization of the heart in man with use of a balloon-tipped catheter. NEJM 1970Forrester J. Right and left heart filling pressures in acute MI. NEJM 1971Forrester J. Silent mitral insufficiency in MI. Am Heart J. 1971
Yet for CHF management, we also want to measure cardiac output. Now enters the incredible benevolence of chance.
Forrester J. Silent mitral insufficiency in MI. Am Heart J. 1971
We Discover New EntitiesLike RVMI and Silent Mitral Insufficiency
The Incredible Benevolence of Chance: It Comes Not from Medicine, But from Politics
Abandons all his worldly possessions to escape communism49 yo unknown lab researcher [9 ms]; prospects bleakThru Jewish philanthropy he lands at Cedars animal labHe’s penniless, but what he brings is beyond imagining
In Prague Willie has invented thermodilution cardiac output.He injects a cold solution in RA, & records temperature change in the PAWith just 2 thermistor wires, we can add CO measurement to our catheter!
As Swan contemplates sailboats, a world away in Prague, Willie Ganz…
But then…
Disaster! It’s impossible to pass the thermistor wire to the RA
The Impossible ProblemThermistor wire either buckles or obstructs flow to RAInjectate temperature is not knowable; CO cannot be measuredWillie’s dream is shattered
Predict RA injectate temp by measuring: injectate temp outside the bodycatheter length patient’s body temperature
We bench test, then validate vs cardiogreen in cath labEdwards incorporates PA thermistor into body of catheter
George Diamond
Forrester JS: Thermodilution CO with a single flow-directed catheter. AHJ 1972
Ingenuity revisited: an outside-the-box thinker’s idea
+Congestion-Hypoperfusion
+Congestion+Hypoperfusion
-Congestion-Hypoperfusion
-Congestion+Hypoperfusion
Warm, dry
Cold, dry
Warm, wet
The Conceptual Breakthrough: Integrate Basic Science With Both Bedside Hemodynamics & Clinical Symptomatology
Cold, wet
The Forrester Classification
Starling function curve Bedside hemodynamics Clinical symptoms
We Define The Effects Of All Bedside Interventions On Cardiac Fx
Medical Therapy of Acute Myocardial Infarctionby Application of Hemodynamic Subsets
James S. Forrester, M.D., George Diamond, M.D., Kanu Chatterjee M.R.C.P., and HJC Swan M.D., Ph.D.
By the end of the decade. MI mortality is cut in half!
Cedars of Lebanon’s Turning Point: NIH Creates Huge Grant for MI, Swan Decides to Compete With Nation’s Top Programs
JSF creates a 300 page proposal, NIH sends site visitors, and…
We won with outside-the-box ideasDenouementThrombolysis, PTCA & 2DE reduce mortality by half again.
In its era, >25M caths created foundation of hemodynamic bedside Rx
Cedars of Lebanon HospitalDukeHarvard-MGHJohns HopkinsCornellUniversity of AlabamaUCSDUniversity of RochesterUniversity of Chicago
Yesteryear’s insights for today’s cardiologic mavericks: Challenge convention, think outside-the-box, persist, & get lucky.
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CVPWe could diagnose pulmonary embolus, ventricular septal defect and RVMI at the
bedside
Here's to the mavericks,the misfits, the round pegs in the square hollesThey're not fond of rules, and they have no respect for common wisdomYou can glorify or vilify them, but you can't ignore them because they change things. And while some may see them as the crazy ones, we see genius, Because the people who are crazy enough to think that they can change the world…
are the ones who do.