Development of a Selective Aortic Arch Perfusion System in a Porcine Model of Exsanguination Cardiac Arrest.
J Vis Exp
; (162)2020 08 25.
Article
in En
| MEDLINE
| ID: mdl-32925879
ABSTRACT
Hemorrhage constitutes the majority of potentially preventable deaths from trauma. There is growing interest in endovascular resuscitation techniques such as selective aortic arch perfusion (SAAP) for patients in cardiac arrest. This involves active perfusion of the coronary circulation via a thoracic aortic balloon catheter and is approaching clinical application. However, the technique is complex and requires refinement in animal models before human use can be considered. This paper describes a large animal model of exsanguination cardiac arrest treated with a bespoke SAAP system. Swine were anesthetized, instrumented and a splenectomy was performed before a controlled, logarithmic exsanguination was initiated. Animals were heparinized and the shed blood collected in a reservoir. Once cardiac arrest was observed, the blood was pumped through an extra-corporeal circuit into an oxygenator and then delivered through a 10 Fr balloon catheter placed in the thoracic aorta. This resulted in the return of a spontaneous circulation (ROSC) as demonstrated by ECG and aortic root pressure waveform. This model and accompanying SAAP system allow for standardized and reproducible recovery from exsanguination cardiac arrest.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Aorta, Thoracic
/
Perfusion
/
Exsanguination
/
Heart Arrest
Limits:
Animals
/
Humans
/
Male
Language:
En
Journal:
J Vis Exp
Year:
2020
Document type:
Article