Cardiac Arrest, Cardiogenic Shock, Lower Limb Ischemia
Conditions
Keywords
VA-ECMO, VA-ECLS, Near-Infrared Spectroscopy (NIRS)
Brief summary
Temporary cardiac support by VA-ECLS can lead to lower limb ischemia. The aim of this study is to evaluate a multi-modal strategy (physical examination, NIRS monitoring and angiography through the reperfusion canula) of lower limb surveillance.
Detailed description
VA ECLS is used as a temporary circulatory support during cardiogenic shock and refractory cardiac arrest. Complications of VA ECLS include hemorrhagic, infectious and ischemic events. VA ECLS requires arterial and venous canules which are frequently positioned in the femoral artery and vein, which carries the risk of lower limb ischemia due to retrograde flow and obstruction of the femoral artery lumen. VA ischemia during VA ECLS is frequent (11-52%) and requires the use of reperfusion canula in the femoral common artery on VA ECLS implantation in a primary prevention strategy, before lower limb ischemia occurs. Even with this strategy, lower limb ischemia can occur due to arterial thrombosis, arterial spasm or insufficient blood flow through the reperfusion canula. Lower limb complications are prevented by monitoring of regional oxygen saturation, control of the reperfusion canula position (ultrasound, angiography) and rapid management when lower limb ischemia is suspected. There are no clear recommendations regarding prevention of lower limb complications during VA ECLS and arterial angiography has been described to diagnose ischemic events and evaluate the effectiveness of an intervention such as injection of vasodilators. This study is a prospective evaluation of a strategy to prevent lower limb complications during VA ECLS with a systematic arterial angiography on VA ECLS implantation and when lower limb ischemia is suspected (regional oxygen tissue saturation \<50% or a differential \>15% between both lower limbs) in addition to continuous NIRS monitoring of lower limbs during VA ECLS.
Interventions
PROCEDURELower limb angiography via the reperfusion cannula and NIRS monitoring
Data collection only (lower limb angiography, lower limbs NIRS values).
Sponsors
Central Hospital, Nancy, France
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Temporary circulatory support with VA ECLS * Age \> 18 years
Exclusion criteria
* Pregnancy * History of iodinated contrast allergy * History of lower limb amputation above the ankle * Lower limb ischemia before starting of VA-ECLS * Femoro-axillary VA-ECLS * Absence of the lower limb reperfusion canula
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Severe limb ischemia | 60 days | Ischemia leading to surgical intervention, functional sequelae, necrosis of the extremities or compartment syndrome |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Mortality | 28 days and 60 days | Mortality rate |
| Incidence of ischemia of the lower limb during ICU stay | 2 months | StO2 \< 50% during 4 consecutive minutes AND/OR StO2 differential \> 15% during ICU stay |
| Incidence of renal replacement therapy during ICU stay | 2 months | Number of patients who underwent renal replacement therapy |
| Duration of ICU stay | 60 days | Number of days in the ICU |
| Duration of hospital stay | 60 days | Number of days in the hospital |
Countries
France
Outcome results
None listed