EDECMO 25.5 – (Part 2) an EDECMO short with Jim Manning – on location with the SAMU pre-hospital ECMO team in France

In followup to our discussion with Jim Manning MD (@JManning_UNC)  and Lionel Lamhaut (@LionelLamhaut) MD of the Service d’Aide Médicale Urgente (SAMU) for EDECMO Episode 25, the guys spent the last few days ‘just hanging out in Paris.”

The recent massacre in Paris certainly makes this topic..well…topical.

Manning spent several days with the prehospital ECMO team in France.  In this episode Zack interviewed Manning, who was on-location with the SAMU in France…and walks us through the experience of witnessing prehospital ECMO with the SAMU.

In the U.S., we aren’t yet ready for pre-hospital endovascular resuscitation – indeed there are currently several barriers to overcome. But perhaps the Europeans are onto something here:

Femoral cutdown vs. percutaneous access? Discussed. Verdict?

Transporting a patient on ECMO:

You know, the thing is…that once you have a patient on ECMO, everything chills out…

-Jim Manning

Every patient gets:

  • Dobutamine: 5 ug/kg/min
  • Norepinephrine 3 mg/hr
  • pRBC 2 units
  • FFP 2 units

Flow goals: start 2.5-3 lpm…then slowly increase. Does this help quell reperfusion injury?

This is the exciting. This is fantastic. This is the future if you ask me. We are going to be doing this and its just a matter of time before the rest of us realize that…we are headed in the right direction

Jim Manning

Jim Manning

SAMU Ambulance

SAMU Ambulance

Lionel Lamhaut and the SAMU ambulance

Lionel Lamhaut and the SAMU ambulance

Manning & SAMU

Manning & SAMU

EDECMO 25 – ‘Ze ECMO TEAM.’ Manning and Lamhaut: Updates on ECMO, the new 7F REBOA Catheter, and Pre-hospital ECMO in France

In this episode, Zack interviews Jim Manning MD (University of North Carolina) and Dr. Lionel Lamhaut of the famed French SAMU (Service d’Aide Médicale Urgente).

Highlights:

2015 Resuscitation Science Symposium updates:

“ECMO is at the forefront of resuscitation science” – Jim Manning

The New REBOA Catheter: Pryor Medical – just obtained FDA approval for endovascular proximal control of non-compressible hemorrhage below the diaphragm.

At Sharp Memorial Hospital we currently use the 12Fr Chek-Flo sheath, paired with 12F (external diameter) CODA balloon occlusion catheter for non-compressible hemorrhage below the diaphragm.  Pryor Medical has just gained FDA approval to market their REBOA catheter – a 7F version that doesn’t seem to require surgical repair of the arteriotomy site.  For those of us doing REBOA, this is a BIG DEAL:

Website Image 10-26-15

Selective Aortic Arch Perfusion Catheter (SAAP) – which is like a REBOA catheter but has a lumen large enough to perfuse blood (or a blood substitute) through.  Manning talks about what’s sexy with his device.

 

Lionel Lamhaut from the French SAMU (Service d’Aide Médicale Urgente) gives us an update on their prehospital ECMO program in France:

SAMU Inclusion Criteria:

  1. Medical Cardiac Arrest
  2. Age < 75
  3. No Flow < 5 min (bystander CPR must be started within 5 min)
  4. Hypothermia is always considered
  5. Intoxications (of any kind) are always considered
  6. ETCO2 > 10

For review, check out our original discussion with ‘reanimateur’ Dr. Lamhaut about prehospital ECMO: edecmo.org/17

In keeping with all of the in-hospital and out-of-hospital ECPR data accumulating, it appears that Lamhaut’s team is also seeing a success rate (survival with CPC 1 or 2) of around 30% (final data pending publication).

 

Consider this: the modified cut-down technique. The French prehospital team, quite obviously, don’t have ultrasound access in the field.  So instead of using ultrasound visualization of the femoral vessels, they necessarily use direct visualization.  Listen to this episode to hear the details…

 

 

 

 

EDECMO Episode 8 – “Prime Time!” – prepping the ECMO circuit for action!

Dr. Jim Manning

Dr. Jim Manning

The ED ECMO crew left the www.edecmo.org World Headquarters in May 2014 to meet with Dr. Jim Manning at the University of North Carolina Chapel Hill to do some animal experiments incorporating ECMO.  Dr. Manning is an Emergency Department attending physician at UNC-Chapel Hill and has a distinct interest in endovascular resusscitation. Specifically, Jim is working with a new catheter called the “Selective Aortic Arch Perfusion” (or SAAP) catheter in non-compressible abdominal and pelvic trauma. The SAAP catheter functions much like REBOA (resuscitative endovascular balloon occlusion of the Aorta) and we will compare and contrast those two technologies in the near future.

Dr. Manning’s expertise in animal models of resuscitation drew us to North Carolina. The experience was far beyond anything we could have expected and much much more will be posted over the coming months!

The Manning Lab

Dr. Manning, Zack Shinar, Shane McCurdy, and Joe Bellezzo

The Experiments

The Experiments

Manning in prep

Joe Bellezzo MD

Joe Bellezzo MD

 

“PRIME TIME!” ~Nuances of priming the ECMO circuit with Greg Griffin, the Chief Perfusionist at UNC-Chapel Hill

Greg Griffin, Chief Perfusionist - UNC Chapel Hill

Greg Griffin, Chief Perfusionist – UNC Chapel Hill

The folks at UNC-Chapel Hill have a very active inpatient ECMO program. While they aren’t yet doing ECPR in the ED (and we hope to help change that!), they do a lot of ECMO.  Greg Griffin has been the Chief Perfusionist at UNC-Chapel Hill for the past 3 years and has been a perfusionist at their facility for over 20 years. While in Dr. Manning’s lab, Zack had the opportunity to sit down with Greg and talk in depth about ECMO, the Maquet Cardiohelp ECMO machine, and some pearls and pitfalls of “priming the pump!”

Introduction

  • The ECMO circuit consists of:
      1. The machine: which is basically a centrifugal pump (a machine that generates forward blood flow via centrifugal force), an oxygen supply, and a water bath to control the temperature. Simple.
      2. The circuit: the circuit is a.) the tubing that the blood flows through, b.) a membrane oxygenator (a small plastic box that contains a membrane…blood flows across that membrane while oxygen is added to the blood and CO2 is removed), and c.) the pump head (a plastic chamber that transfers the centrifugal forces from the pump to generate forward blood flow).
        • The combination of the tubing, oxygenator and pump head are also referred to as the “disposables,” because they come into contact with the patient’s blood, and are later disposed of.
      3. The cart: which is the support structure that holds all the equipment.
  • Definitions:
    1. Priming the circuit = filling the entire circuit with fluid. Priming is done by hanging the fluid higher than the circuit and letting gravity fill the entire circuit.  At the present time, we prime with a crystalloid solution.
    2. De-Airing: removing all air bubbles from the circuit. The nuances of this are discussed in this episode.

The Formula One Racetrack Analogy

  • When the circuit is set up and the pump is flowing, a maze of tubes seems to spread haphazardly about the machine.   What appears complicated and confusing is really quite simple:  The circuit is nothing more than a big oval tube with blood flowing around the oval, not unlike an oval auto racetrack. When priming the pump you run the “cars” through the oval until you are ready to initiate bypass and add your patient to the circuit. Priming involves filling the circuit with fluid and de-airing the entire system.
  • When it comes time to put your patient on bypass, you divert the “cars” from the “racetrack” and have them take a detour into the “pit,” which is your patient. Oxygenated blood that has just left the oxygenator exits the oval “racetrack” via detour-tubing, enters the arterial cannula, and enters the patient’s arterial system.  Deoxygenated venous blood that is returning to the heart is captured by the venous cannula (who’s tip is at the right atrial inlet) and directed back onto the “racetrack”.  The circuit once again passes the blood through the centrifugal pump (generating forward blood flow) and then, again, through the oxygenator.
  • At any time you can elect to run your “race cars” through the circuit only (staying on the track), or through your patient. One or the other…but not both at the same time.

 

In keeping with the “North Carolina” theme, here is the Charlotte Motor Speedway in Charlotte, North Carolina:

Charlotte Motor Speedway

Racetrack mockup 2.001

Racetrack mockup 3.001

 

Now, lets take another look at a diagram of the whole circuit:

 

Maquet Circuit mockup.001

Enjoy the Interview: