ECPR for OHCA: Pre-hospital or in-hospital?

Happy to share this Editorial written with @Alice_hutin and @giovannilandoni commenting on a SR/MA by @nattiejpk investigating the role of pre-hospital #ECPR.

🧵👇 Learn more in the thread /17

🔗 bit.ly/3ZQQNNG #ResusTwitter
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#ECPR is the last rescue therapy when despite high-quality conventional CPR it is not possible to achieve ROSC.

In such situations, OHCA is considered refractory and E-CPR recently demonstrated to improve outcomes in selected patients.

#ResusTwitter
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@nattiejpk recently conducted a SRMA published on @JCVAonline investigating effect of preh initiation of #ECPR on low-flow and survival

Most evidence comes from Paris, first EMS applying preh ECPR since 2011 @LionelLamhaut @alice_hutin

#ResusTwitter
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Preh #ECPR is one of the 2 main strategies to provide ECPR for OHCA pts but it is not commonly adopted.

A “load and go” strategy where pts are rapidly transported with ongoing CPR is more widespread and was recently tested in 2 RCTs.

#ResusTwitter
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In pre-hospital #ECPR, ECMO is established at the place of OHCA (home, street) and the patient is transported once ECMO cannulation is completed.

Pre-hospital E-CPR potentially reduces low-flow by avoiding delays due to pt extraction and ambulance transport.

#ResusTwitter
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In their meta-analysis of pre-hospital ECPR, Kruit and colleagues reported a mean low-flow time of 61 min.

Since shorter low-flow times are associated with better outcomes and pre-h ECPR pursues this goal, one might expect a shorter low-flow 🤔

sciencedirect.com/science/articl…
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Mean low-flow times for in-hospital E-CPR in the ARREST trial was 59 min and in the Prague OHCA study 61 min but often very variable and much higher outside the setting of randomized trials.

#ResusTwitter
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It’s difficult staying within 60’ of low-flow (golden hour for E-CPR), even when initiating #ECPR in the pre-hospital setting.

Paris strategy significantly reduced low-flow with similar cannulation time, success and complications.

pubmed.ncbi.nlm.nih.gov/28414164/ #ResusTwitter
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Concerning survival after pre-hospital #ECPR, @nattiejpk calculated a pooled survival to hospital discharge of 23%.

The absence of a comparator and the small number of studies and patients included prevent from drawing firm conclusions.

#ResusTwitter
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Only one observational study in Paris compared pre-hospital #ECPR with in-hospital E-CPR (N=525).

Pre-hospital cannulation was an independent predictor of higher survival (OR 2.9, 95% CI 1.5–5.9) and favorable neurological outcome (OR 2.9, 95% CI 1.3–6.4).

#ResusTwitter
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The potential reduction in low-flow that pre-hospital ECPR can offer and increase in survival are not only determined by initiating ECMO at OHCA site but also by EMS organization, rapid identification of eligible pts, and early activation of ECPR team and ECMO implementation
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It is essential to consider that preh #ECPR cannulation is performed in a more complex/unpredictable environment

In-h ECPR is in a more controlled setting with immediate availability of more equipment/diagnostics/HCPs, facilitating the procedure and complications management
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This is a not exhaustive list of pros and cons of pre-hospital initiation of #ECPR

Others to add?

jcvaonline.com/article/S1053-… #ResusTwitter
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RCTs comparing preh vs in-h #ECPR are currently lacking.

ON-SCENE trial is randomizing in The Netherlands to preh ECPR provided through HEMS vs conventional resuscitation.

We will have to wait until 2026 to see the results.

#ResusTwitter @ECMOphile
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Aiming “no-flow 0” with early CPR remains the cornerstone: bystanders have an unquestionable role and are the primary drivers of good outcome

#ECPR has little benefit without bystander CPR

Apps to alert FRs should be first implemented!

@ffsemeraro
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It is clear that treating refractory OHCA pts with prehospital #ECPR (but also in-hospital) poses unique logistical challenges in addition to clinical ones

Preh ECPR requires considerable resources/skills not universally available in the pre-hospital setting

#ResusTwitter
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When #ECPR is applied, low-flow time should be minimized and preh ECPR could be the most effective way but there is very low certainty of evidence supporting it.

The best strategy remains to be demonstrated and may be dependent on system-specific factors.

#ResusTwitter
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More from @tscquizzato

Jan 22
4 RCTs published in the last few hours you can’t miss if you work with critically ill patients:

#1 Fluids in septic shock
#2 Mobilisation and long-term cognitive impairment
#3 NIV for extubation of obese patients
#4 Nutrition before extubation

A thread 🧵👇

#FOAMcc #SCCM2023 Image
#1

#CLOVERStrial compared a restrictive fluid strategy (with early vasopressors) to a liberal one in septic shock patients.

➡️ Restrictive fluid strategy (with early vasopressors) did not result in significantly lower (or higher) mortality

🔗 nej.md/3CWSXBA

#FOAMcc Image
#2

What’s the effect of early mobilisation on long-term cognitive impairment in ICU survivors after mechanical ventilation?

➡️ Early mobilisation improved long-term cognitive impairment at 1 y (24% vs 43%) but increased adverse events (6%)

🔗 bit.ly/3CYIZQ7

#FOAMcc Image
Read 6 tweets
Jun 16, 2021
THREAD and my infographic of the #TTM2 trial

#OHCA patients were randomised to #TTM at 33°C or normothermia (<37.8°C) with early fever treatment.

➡️ Mortality and poor neuro outcome at 6 months were not lower in the hypothermia group.

🔗 nejm.org/doi/full/10.10… #FOAMcc Image
Guidelines recommend selecting and maintaining a constant target #TTM between 32 and 36 °C in comatose post-cardiac arrest patients to prevent hypoxic-ischemic brain damage.
(strong recommendation, moderate-quality evidence). #FOAMcc Image
Two RCTs published in 2002 showed an improved survival and neurologic outcome in patients resuscitated from OHCA of presumed cardiac cause and shockable rhythm who underwent hypothermia at 33°C. #FOAMcc Image
Read 6 tweets
Jun 11, 2020
*Thread on #FirstResponders for OHCA*

In the last decade, numerous systems like @pulsepoint @GoodSamApp @SAUVLife @HartslagNu were developed to alert laypersons.

In this review, we provide an overview of published technologies and analyze their impact on pts outcomes.

#FOAMed Image
How does a citizens first responder system work?

Citizens willing to help in case of OHCA can voluntarily register in a first responder network.

When an OHCA occurs, the nearest ones are alerted simultaneously with #EMS dispatch to increase CPR rates before ambulance arrival. ImageImage
Our systematic review found 12 different systems (7 apps, 5 text message systems).

Activation radius varied from 150 m to 5 km. Also activation criteria, training required, technology used, and active time varied between systems and are summarized below 👇 Image
Read 12 tweets

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