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Extracorporeal Membrane Oxygenation as Circulatory Support in Adult Patients with Septic Shock: A Systematic Review


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Fig. 1.

PRISMA flow diagram
PRISMA flow diagram

Risk of bias

Authors’ ID & year of publication Study Design A sample representative of the population (Risk of Selection Bias) Evaluation of the outcome (Risk of Performance Bias) Follow-up long enough Follow up complete Conflict of Interest Other Limitations
Park et al., 2014 Retrospective review /32 patients Not a true representative sample (high) Record review (high) Not applicable. Not applicable. None.

Single-Center Study

Small sample size

A retrospective review of records

Huang et al., 2013 Retrospective cohort study / 52 patients Not a true representative sample (high) Record review (high) Yes. Yes. None.

Single-Center Study

Low generalizability

Cheng et al., 2013 Propensity-matched analysis of ECMO registry /108 matched Not a true representative sample (high) Record review (high) Yes. Yes. None.

Existence of occult confounders Suboptimal selection because of inappropriate comparability

Brechot et al., 2013 Retrospective cross-sectional survey/14 patients Not a true representative sample (high) Record review (high) Not applicable. Not applicable. Two of the authors took payments from companies

Single-Center Study

Small sample size

No controlled group was matched

Banjas et al., 2018 Retrospective Cohort/131 patients Not a true representative sample (high) Record review (high) Yes. Yes. None.

Single-center study

Overall, 29% missing data

Low generalizability

*Yeo et al., 2017 Brief communication Case series; not representative sample (High) Record review (high) Yes. Yes. None.

Single Center case series

Small sample size

No controlled group

A retrospective review of records

Lee et al., 2017 Retrospective cohort/24 patients Not a true representative sample (high) Record review (high) Not applicable Not applicable None.

Small sample size

• No controlled group was matched

Ro et al., 2018 Retrospective review/71 patients Not a true representative sample (high) Record review (high) Not applicable Not applicable None.

Existence of occult confounders

A retrospective review of records

Han et al., 2019 Retrospective cohort/23 patients Not a true representative sample (high) Record review (high) Not applicable Not applicable None.

Existence of occult confounders

Single-Center Study

Vogel et al., 2018 Retrospective case series/12 patients Not a true representative sample (high) Record review (high) Yes. Yes. None.

Small sample size

• No controlled group was matched

Falk et al., 2019 Retrospective cohort/37 patients Not a true representative sample (high) Record review (high) Yes. Yes. None.

Small sample size

Single-Center study

Characteristics of studies included in the systematic review.

Study No. Study name Study type ICU Mortality Length of ICU stay Length of hospital stay Improvement in tissue oxygenation Vasopressor requirement Survival to the ICU / hospital discharge Other Outcomes
01. Park et al., 2014. 32 patients (21 males) with refractory septic shock were retrospectively reviewed. Baseline: Shock-ECMO interval 30.5 hours, CPR duration (median) 23 minutes. CPR strongly predicts in-hospital mortality after ECMO.

Median 11.1 days (IQR 4.0–26.0).

Survivors had longer stay (32.5 days) than non-survivors (7.6 days) with P=0.02.

Not reported Survivors had lower peak lactate levels (4.5 mmol/l) and higher peak troponin I values (32.8 ng/ml) than non-survivors. Not reported 7 survived, 19 died from shock/multiorgan failure.

Successful weaning: 40.6% in all patients.

Stroke: 3.1% in all patients, none in survivors.

02. Huang et al. Retrospective study, 52 patients; inclusion criteria: age >18 years, V-A ECMO, positive culture/serology, exclusion criteria: ECMO primarily for respiratory support. Not reported Median 90.1h (IQR 28.3 – 314.7) Median: 114.1 hours (IQ 52.3 – 404.7) Not reported Not reported Survival: 15% survived, 64% died. Age <60 better survival (P=0.029).

Duration of ECMO (n=52) 15.0 hours IQ (6.1– 29.3).

Bleeding at the cannulation site & GI bleeding= 8

03. Cheng et al. 2013. Propensity-matched ECMO study: 108 septic vs. 108 non-septic patients, age 16+, VA & VV-ECMO, non-first time ECMO excluded. Septic ECMO patients had higher mortality, especially in patients over 55 years old. Not reported Not reported Not reported IABP during ECMO: septic (n=108) 19.0%, non-septic (n=108) 25.3% (P=0.285)

Survival to discharge: 28.7% in septic vs 37.0% without sepsis

Survived beyond ECMO: 44.4% in septic vs 56.5% in non-septic patients.

CPR during ECMO is more common in non-septic group (n=108). Post ECMO neurologic deficit higher in non-survivors (n=71).
04. Brechot et al. 2013 Survey of 14 patients with refractory cardiovascular failure associated with sepsis and other criteria for VA-ECMO use, excluding certain conditions. ICU mortality in 14 patients was 29%, with 4 deaths during ICU stay (2 during ECMO). Shorter in non-survivors (median 10 days) compared to survivors (median 17.5 days). Not reported ICU patients had a peak troponin value post-ECMO of 5.8 ng/ml. Not reported 10 (71%) out of 14 patients. ECMO duration: median (range) (n=10) 5.5 (2–12) days in survivors vs (n=4) 3 (1–7) days in non-survivors.
05. Banjas et al., 2018 Inclusion: ECMO-treated patients. 56% 6-year hospital mortality. Mean: 20 (8–31) Mean hospital stay: 27 (15–40)

Baseline lactate levels: 13 (8–26).

PaO2/FiO2 ratios: 145 (99–233)

Not reported Not reported Not reported
06. Yeo et al., 2017 Patients with septic shock and ARDS were included. (n=8)

Overall survival rate: 50%

Successful weaning rate: 62.5%

Not reported Not reported

Baseline:

-Median MAP: 40 mmHg (IQR 33–46)

-Median arterial lactate: 7.8 mmol/L (IQR 6.3–16.3)

Not reported Not reported Not reported
07. Lee et al. 2018

Patients: 24 patients (M:F ratio: 6:2).

Inclusion: Patients 18 years or older who received ECMO for sepsis.

6 patients died, only 2 were discharged from the hospital. Median 4 days (1–13) Not reported Immediately before the start of ECMO, the median serum lactate level, CRP, and total bilirubin were higher in the survivor group. Not reported Survival to discharge: 25% (2 out of 8 patients). 3 patients weaned successfully, but 1 died before discharge

Survival group: Shock to ECMO duration= 25 hours (7–43)

Non-survival group: Shock to ECMO duration= 6 hours (1–75)

08. Ro et al. 2018 Adults (>20 y/o) with refractory shocks who received venoarterial ECMO support. In-hospital mortality: 93%. 90-day mortality rates: 87.3%. Not reported Not reported Non-survivors had higher arterial lactate, lower platelet count, and higher total bilirubin. Not reported Septic shock: 5 patients (7%) survived to discharge 11 patients (15.5%) successfully weaned off ECMO in median 7.9 days.
09. Han et al. 2016

Inclusion: Patients with persistent circulatory failure or worsened refractory septic shock.

Exclude: Patients with advanced malignant tumors, or irreversible neuropathy.

15/23 patients died; 3 died after weaning. ICU stay was shorter for the survival group (median of 12 days) compared to the death group (median of 16.5 days).

Survival group: Hospital stay = 19 days (range, 17.5–21).

Death group: Hospital stay = 16.5 days (range, 13.0– 21.0)

Mean lactate levels were lower in the survival group (4.4 mmol/L) than in the death group (6.8 mmol/L). Not reported 5 discharged alive, 15 unsuccessful weaning, 3 deaths after weaning. Not reported
10. Vogel et al. 2018 Retrospective analysis of ECMO database to identify suitable patients, followed by clinical data extraction from electronic medical records. 3 patients (25%) died, 2 from multiorgan failure and 1 from cerebral edema with brain herniation. Not reported Not reported

Baseline lactate: mean 5.0 (range 3.85–6.05).

PaO2: Mean 9.1 (range 6.4–9.8).

pH: mean 7.10 (range 7.08–7.22)

5 patients (41.7%) received vasopressin and 2 patients (16.7%) received adrenaline, dobutamine, or milrinone. 9 (75%) survived after VAV ECMO decannulation. No deaths reported during follow-up (median 6 months).
11. Falk et al. 2019 Inclusion: ECMO support received by adult patients with septic shock admitted between January 2012 and December 2017 (n=37). 8/37 patients died. Not reported Not reported Venoarterial patients had a higher Pao2-to-Fio2 ratio, higher lactate levels, and higher ECMO flow than venovenous patients. 71.4% (5/7) of patients survived who experienced CPR before admission. ECMO survival: 81.1%. Hospital survival: 78.4%. Long-term follow-up survival: 59.5% (median 46.1 months). Ten (37%) started venovenous ECMO and 27 on venoarterial ECMO. Venovenous-ECMO was associated with higher risk for in-hospital death (50% vs 11%; p=0.011).
eISSN:
2393-1817
Język:
Angielski
Częstotliwość wydawania:
4 razy w roku
Dziedziny czasopisma:
Medicine, Clinical Medicine, Internal Medicine, other, Surgery, Anaesthesiology, Emergency Medicine and Intensive-Care Medicine