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    Appendix A: Methods and literature search strategy

    Methods and literature search strategy

    NICE has identified studies and reviews relevant to venoarterial extracorporeal membrane oxygenation (VA ECMO) in the following indications from the medical literature:

    • acute heart failure in adults

    • extracorporeal cardiopulmonary resuscitation (ECPR) in adults in refractory cardiac arrest

    • postcardiotomy cardiogenic shock in adults.

    The search was initially developed for the acute heart failure indication only (Tables 4a and 4b) and then modified and updated to cover the additional two indications (Table 4c).

    Search strategy design and peer review

    This search report is informed by the Preferred Reporting Items for Systematic reviews and Meta-Analyses literature search extension (PRISMA-S).

    A NICE information specialist ran the literature searches for acute heart failure in adults on 18th September 2024 and updated them on 12th May 2025. The search strategy was modified and updated on 19th June 2025 to incorporate the 2 additional interventions. See the search strategy history for the full search strategy for each database. Relevant published studies identified during consultation or resolution that are published after this date may also be considered for inclusion.

    The principal search strategy was developed in MEDLINE ALL (Ovid interface). It was adapted for use in each of the databases listed in table 4a, taking into account the database's size, search functionality and subject coverage. The MEDLINE ALL strategy was quality assured by a NICE senior information specialist. All translated search strategies were peer reviewed to ensure their accuracy. The quality assurance and peer review procedures were adapted from the Peer Review of Electronic Search Strategies (PRESS) 2015 evidence-based checklist.

    Review management

    The search results were managed in EPPI‑Reviewer version 5 (EPPI‑R5). Duplicates were removed in EPPI‑R5 using a 2‑step process. First, automated deduplication was done using a high-value algorithm. Second, manual deduplication was used to assess low-probability matches. All decisions about inclusion, exclusion and deduplication were recorded and stored.

    Limits and restrictions

    The CENTRAL database search removed trial registry records and conference material. The Embase search excluded conference material, letters and editorial. We excluded the following publication types in MEDLINE: letter, historical article, comment, editorial, news and case reports. English language limits were applied to the search when possible in the database.

    The search was limited from March 2013 to the latest update. The date limit was included to update searches undertaken for an earlier version of this guidance.

    The limit to remove animal studies in the searches is standard NICE practice, which has been adapted from Dickersin K, Scherer R, Lefebvre C (1994) Systematic Reviews: Identifying relevant studies for systematic reviews. BMJ 309(6964): 1286.

    Main search

    Table 4a Main search results

    Database

    Date searched

    Database platform

    Database segment or version

    Number of results downloaded

    Cochrane Central Register of Controlled Trials (CENTRAL)

    18/09/24

    Wiley

    Issue 8 of 12, August 2024

    410

    Cochrane Database of Systematic Reviews (CDSR)

    20/09/24

    Wiley

    Issue 9 of 12, September 2024

    13

    Embase

    20/09/24

    Ovid

    1974 to 2024 September 17

    2101

    INAHTA International HTA Database

    18/09/24

    https://database.inahta.org/

    -

    24

    MEDLINE ALL

    18/09/24

    Ovid

    1946 to Sept 17, 2024

    1454

    Update search

    Table 4b Update search results 1

    Database

    Date searched

    Database platform

    Database segment or version

    Number of results downloaded

    Cochrane Central Register of Controlled Trials (CENTRAL)

    12/05/2025

    Wiley

    Issue 4 of 12, April 2025

    39

    Cochrane Database of Systematic Reviews (CDSR)

    12/05/2025

    Wiley

    Issue 5 of 12, May 2025

    0

    Embase

    12/05/2025

    Ovid

    1974 to 2025 May 09

    54

    INAHTA International HTA Database

    12/05/2025

    https://database.inahta.org/

    4

    MEDLINE ALL

    12/05/2025

    Ovid

    1946 to May 09, 2025

    195

    Additional update search

    Table 4c Update search results 2

    This version of the search was modified to include two additional indications and searched from March 2013 to latest update.

    Database

    Date searched

    Database platform

    Database segment or version

    Number of results downloaded

    Cochrane Central Register of Controlled Trials (CENTRAL)

    19/06/25

    Wiley

    Issue 6 of 12, 2025

    295

    Cochrane Database of Systematic Reviews (CDSR)

    19/05/25

    Wiley

    Issue 6 of 12, 2025.

    0

    Embase

    19/06/25

    Ovid

    1974 to 2025 June 17

    4461

    INAHTA International HTA Database

    19/06/25

    https://database.inahta.org/

    -

    29

    MEDLINE ALL

    19/06/25

    Ovid

    1946 to June 18, 2025

    4707

    Search strategy history – initial search strategy September 2024

    MEDLINE ALL search strategy

    1 , Heart Failure/th , 29,868

    2 , Acute disease/th , 1,194

    3 , 1 and 2 , 11

    4 , *Cardiomyopathies/th , 1,150

    5 , *Shock cardiogenic/th , 2,135

    6 , Myocardial Stunning/th [Therapy] , 155

    7 , Myocarditis/th [Therapy] , 1,294

    8 , *Myocardial infarction/ , 138,977

    9 , Out-of-Hospital Cardiac Arrest/th [Therapy] , 5,734

    10 , ((acute* or server*) adj (heart* or cardiac* or myocard* or cardio* or ventric*) adj (failur* or decompensation* or insufficient* or dysfunct* or stand* or still* or fault* or shock*)).ti,ab. , 9,513

    11 , Myocardit*.ti,ab. , 21,440

    12 , ((Postpartum* or post-parttum* or peripartum* or peri-partum*) adj cardiomyopath*).ti,ab. , 1,697

    13 , PPCM.ti,ab. , 671

    14 , (myocard* adj (stun* or hibernat* or infract*)).ti,ab. , 2,258

    15 , Primary Graft Dysfunction/th [Therapy] , 99

    16 , (primary* adj graft* adj dysfunct*).ti,ab. , 1,392

    17 , or/3-16 , 182,062

    18 , *Cardiopulmonary Resuscitation/mt [Methods] , 4,116

    19 , *Extracorporeal Membrane Oxygenation/ , 13,895

    20 , ECMO.ti. , 3,217

    21 , *Extracorporeal Circulation/mt [Methods] , 1,090

    22 , (extracorp* adj circulat*).ti,ab. , 8,596

    23 , (extracorp* adj ((cardiopulmon* adj resuscitat*) or CPR)).ti,ab. , 1,229

    24 , ECPR.ti. , 154

    25 , (Biomedicus adj pump*).ti,ab. , 45

    26 , (Maquet* adj rotaflow*).ti,ab. , 12

    27 , (jostra adj (pump* or rotaflow*)).ti,ab. , 5

    28 , (levitronix adj (centrimag* or pump* or system* or oxygen*)).ti,ab. , 54

    29 , (Medos adj (Hilite* or oxygen*)).ti,ab. , 22

    30 , left ventricle assist device.ti,ab. , 106

    31 , or/18-30 , 28,477

    32 , 17 and 31 , 2,725

    33 , animals/ not human/ , 5,225,551

    34 , 32 not 33 , 2,680

    35 , limit 34 to english language , 2,503

    36 , limit 35 to ed=20130331-20240930 , 2,028

    37 , limit 36 to (letter or historical article or comment or editorial or news or case reports) , 574

    38 , 36 not 37 , 1,454

    [Embase] search strategy

    1 , heart failure/th [Therapy] , 15,752

    2 , acute disease/th [Therapy] , 2,395

    3 , 1 and 2 , 10

    4 , *cardiomyopathy/th [Therapy] , 1,144

    5 , *cardiogenic shock/th [Therapy] , 2,129

    6 , stunned heart muscle/th [Therapy] , 53

    7 , myocarditis/th [Therapy] , 864

    8 , *heart infarction/ , 110,365

    9 , primary graft dysfunction/th [Therapy] , 94

    10 , "out of hospital cardiac arrest"/th [Therapy] , 3,862

    11 , ((acute* or server*) adj (heart* or cardiac* or myocard* or cardio* or ventric*) adj (failur* or decompensation* or insufficient* or dysfunct* or stand* or still* or fault* or shock*)).ti,ab. , 17,537

    12 , Myocardit*.ti,ab. , 31,093

    13 , ((Postpartum* or post-parttum* or peripartum* or peri-partum*) adj cardiomyopath*).ti,ab. , 2,835

    14 , PPCM.tw. , 1,261

    15 , (myocard* adj (stun* or hibernat* or infract*)).ti,ab. , 3,555

    16 , (primary* adj graft* adj dysfunct*).tw. , 3,009

    17 , or/3-16 , 173,201

    18 , *resuscitation/ , 60,473

    19 , *extracorporeal oxygenation/ , 16,545

    20 , ECMO.ti. , 7,837

    21 , *extracorporeal circulation/ , 9,094

    22 , (extracorp* adj circulat*).ti,ab. , 9,683

    23 , (extracorp* adj ((cardiopulmon* adj resuscitat*) or CPR)).ti,ab. , 1,851

    24 , ECPR.ti. , 352

    25 , (Biomedicus adj pump*).ti,ab. , 50

    26 , (Maquet* adj rotaflow*).ti,ab. , 31

    27 , (jostra adj (pump* or rotaflow*)).ti,ab. , 16

    28 , (levitronix adj (centrimag* or pump* or system* or oxygen*)).ti,ab. , 150

    29 , (Medos adj (Hilite* or oxygen*)).ti,ab. , 44

    30 , left ventricle assist device.ti,ab. , 217

    31 , or/18-30 , 96,434

    32 , 17 and 31 , 5,350

    33 , Nonhuman/ not Human/ , 5,532,522

    34 , 32 not 33 , 5,275

    35 , limit 34 to letter/ or (letter or editorial).pt. , 2,165,352

    36 , 34 not 35 , 4,904

    37 , limit 36 to dc=20130331-20240930 , 3,599

    38 , limit 37 to english language , 3,481

    39 , (conference abstract* or conference review or conference paper or conference proceeding).db,pt,su. , 6,020,541

    40 , 38 not 39 , 2,101

    Cochrane Library (CDSR) search strategy

    #1 MeSH descriptor: [Heart Failure] explode all trees and with qualifier(s): [therapy - TH] 2591

    #2 MeSH descriptor: [Acute Disease] explode all trees and with qualifier(s): [therapy - TH] 118

    #3 #1 and #2 0

    #4 MeSH descriptor: [Cardiomyopathies] explode all trees and with qualifier(s): [therapy - TH] 248

    #5 MeSH descriptor: [Shock, Cardiogenic] explode all trees and with qualifier(s): [therapy - TH] 177

    #6 MeSH descriptor: [Myocardial Stunning] explode all trees and with qualifier(s): [therapy - TH] 3

    #7 MeSH descriptor: [Myocarditis] explode all trees and with qualifier(s): [therapy - TH] 13

    #8 MeSH descriptor: [Myocardial Infarction] explode all trees and with qualifier(s): [therapy - TH] 3337

    #9 MeSH descriptor: [Primary Graft Dysfunction] explode all trees and with qualifier(s): [therapy - TH] 3

    #10 MeSH descriptor: [Out-of-Hospital Cardiac Arrest] explode all trees and with qualifier(s): [therapy - TH] 539

    #11 ((acute* or server*) near/1 (heart* or cardiac* or myocard* or cardio* or ventric*) near/1 (failur* or decompensation* or insufficient* or dysfunct* or stand* or still* or fault* or shock*)) 2663

    #12 Myocardit* 1421

    #13 (Postpartum* or post-partum* or peripartum* or peri-partum*) near/1 cardiomyopath* 47

    #14 PPCM 39

    #15 (myocard* near/1 (stun* or hibernat* or infract*)) 342

    #16 (primary* near/1 graft* near dysfunct*) 146

    #17 #3 or #4 or #5 or #6 or #7 or #8 or #9 or #10 or #11 or #12 or #13 or #14 or #15 or #16 8646

    #18 MeSH descriptor: [Cardiopulmonary Resuscitation] this term only 1688

    #19 MeSH descriptor: [Extracorporeal Membrane Oxygenation] this term only 361

    #20 ECMO 1101

    #21 MeSH descriptor: [Extracorporeal Circulation] this term only and with qualifier(s): [methods - MT] 120

    #22 (extracorp* near/1 circulat*) 1423

    #23 (extracorp* near/1 ((cardiopulmon* near resuscitat*) or CPR)) 71

    #24 ECPR 112

    #25 (Biomedicus near/1 pump*) 3

    #26 (Maquet* rotaflow*) 3

    #27 jostra near/1 (pump* or rotaflow*) 1

    #28 (levitronix near/1 (centrimag* or pump* or system* or oxygen*)) 0

    #29 Medos near/1 (Hilite* or oxygen*) 0

    #30 left ventricle assist device 219

    #31 #18 or #19 or #20 or #21 or #22 or #23 or #24 or #25 or #26 or #27 or #28 or #29 or #30 4577

    #32 #17 AND #31 494

    #33 "conference":pt or (clinicaltrials or trialsearch):so 777352

    #34 #32 NOT #33 with Cochrane Library publication date Between Mar 2013 and Sep 2024, in Cochrane Reviews 13

    Cochrane Library CENTRAL search strategy

    #1 MeSH descriptor: [Heart Failure] explode all trees and with qualifier(s): [therapy - TH] 2591

    #2 MeSH descriptor: [Acute Disease] explode all trees and with qualifier(s): [therapy - TH] 118

    #3 #1 and #2 0

    #4 MeSH descriptor: [Cardiomyopathies] explode all trees and with qualifier(s): [therapy - TH] 248

    #5 MeSH descriptor: [Shock, Cardiogenic] explode all trees and with qualifier(s): [therapy - TH] 177

    #6 MeSH descriptor: [Myocardial Stunning] explode all trees and with qualifier(s): [therapy - TH] 3

    #7 MeSH descriptor: [Myocarditis] explode all trees and with qualifier(s): [therapy - TH] 13

    #8 MeSH descriptor: [Myocardial Infarction] explode all trees and with qualifier(s): [therapy - TH] 3337

    #9 MeSH descriptor: [Primary Graft Dysfunction] explode all trees and with qualifier(s): [therapy - TH] 3

    #10 MeSH descriptor: [Out-of-Hospital Cardiac Arrest] explode all trees and with qualifier(s): [therapy - TH] 539

    #11 ((acute* or server*) near/1 (heart* or cardiac* or myocard* or cardio* or ventric*) near/1 (failur* or decompensation* or insufficient* or dysfunct* or stand* or still* or fault* or shock*)) 2663

    #12 Myocardit* 1421

    #13 (Postpartum* or post-partum* or peripartum* or peri-partum*) near/1 cardiomyopath* 47

    #14 PPCM 39

    #15 (myocard* near/1 (stun* or hibernat* or infract*)) 342

    #16 (primary* near/1 graft* near dysfunct*) 146

    #17 #3 or #4 or #5 or #6 or #7 or #8 or #9 or #10 or #11 or #12 or #13 or #14 or #15 or #16 8646

    #18 MeSH descriptor: [Cardiopulmonary Resuscitation] this term only 1688

    #19 MeSH descriptor: [Extracorporeal Membrane Oxygenation] this term only 361

    #20 ECMO 1101

    #21 MeSH descriptor: [Extracorporeal Circulation] this term only and with qualifier(s): [methods - MT] 120

    #22 (extracorp* near/1 circulat*) 1423

    #23 (extracorp* near/1 ((cardiopulmon* near resuscitat*) or CPR)) 71

    #24 ECPR 112

    #25 (Biomedicus near/1 pump*) 3

    #26 (Maquet* rotaflow*) 3

    #27 jostra near/1 (pump* or rotaflow*) 1

    #28 (levitronix near/1 (centrimag* or pump* or system* or oxygen*)) 0

    #29 Medos near/1 (Hilite* or oxygen*) 0

    #30 left ventricle assist device 219

    #31 #18 or #19 or #20 or #21 or #22 or #23 or #24 or #25 or #26 or #27 or #28 or #29 or #30 4577

    #32 #17 AND #31 494

    #33 "conference":pt or (clinicaltrials or trialsearch):so 777352

    #34 #32 NOT #33 with Cochrane Library publication date Between Mar 2013 and Sep 2024, in Trials 410

    INAHTA HTA Database search strategy

    1 , "Heart Failure"[mh] , 252

    2 , "Acute Disease"[mh] , 46

    3 , #2 AND #1 , 2

    4 , "Cardiomyopathies"[mh] , 21

    5 , "Shock, Cardiogenic"[mh] , 11

    6 , "Myocardial Stunning"[mh] , 1

    7 , "Myocarditis"[mh] , 1

    8 , "Myocardial Infarction"[mh] , 123

    9 , "Out-of-Hospital Cardiac Arrest"[mh] , 10

    10 , ((acute* or server*) and (heart* or cardiac* or myocard* or cardio* or ventric*) and (failur* or decompensation* or insufficient* or dysfunct* or stand* or still* or fault* or shock*)). , 149

    11 , Myocardit* , 5

    12 , ((Postpartum* or post-parttum* or peripartum* or peri-partum*) AND cardiomyopath*) , 1

    13 , PPCM , 0

    14 , (myocard* and (stun* or hibernat* or infract*)) , 2

    15 , "Primary Graft Dysfunction"[mh] , 0

    16 , (primary* AND graft* AND dysfunct*). , 3

    17 , #16 OR #15 OR #14 OR #13 OR #12 OR #11 OR #10 OR #9 OR #8 OR #7 OR #6 OR #5 OR #4 OR #3 , 291

    18 , "Cardiopulmonary Resuscitation"[mh] , 23

    19 , "Extracorporeal Membrane Oxygenation"[mh] , 29

    20 , ECMO , 31

    21 , "Extracorporeal Circulation"[mh] , 9

    22 , (extracorp* AND circulat*). , 13

    23 , (extracorp* AND ((cardiopulmon* AND resuscitat*) or CPR)) , 8

    24 , ECPR , 4

    25 , (Biomedicus AND pump*). , 0

    26 , Maquet* and rotaflow*) , 0

    27 , (jostra and (pump* or rotaflow*)). , 0

    28 , (levitronix AND (centrimag* or pump* or system* or oxygen*)). , 0

    29 , (Medos AND (Hilite* or oxygen*)). , 0

    30 , left ventricle assist device , 3

    31 , #30 OR #29 OR #28 OR #27 OR #26 OR #25 OR #24 OR #23 OR #22 OR #21 OR #20 OR #19 OR #18 , 74

    32 , #31 AND #17 , 24

    Search strategy history – update search strategy June 2026

    This version of the search was modified to include two additional indications and searched from March 2013 to latest update.

    MEDLINE ALL search strategy

    1, Heart Failure/th [Therapy], 31,048

    2, Acute Disease/th [Therapy], 1,222

    3, 1 and 2, 11

    4, *Cardiomyopathies/th, 1,952

    5, *Shock, Cardiogenic/th, 2,922

    6, Myocardial Stunning/th [Therapy], 155

    7, Myocarditis/th [Therapy], 1,333

    8, *Myocardial infarction/th [Therapy], 19,394

    9, Out-of-Hospital Cardiac Arrest/th [Therapy], 6,031

    10, ((acute* or severe* or refract*) adj (heart* or cardiac* or myocard* or cardio* or ventric*) adj (failur* or decompensation* or insufficient* or dysfunct* or stand* or still* or fault* or shock* or arrest* or stunn*)).tw., 18,262

    11, (cardiogen* adj shock).tw., 17,331

    12, Myocardit*.tw., 22,410

    13, ((Postpartum* or post-partum* or peripartum* or peri-partum*) adj cardiomyopath*).tw., 1,811

    14, (postcardiotomy or Post-cardiotomy).tw., 1,230

    15, PPCM.tw., 717

    16, (myocard* adj (stun* or hibernat* or infarct*)).tw., 241,791

    17, Primary Graft Dysfunction/th [Therapy], 109

    18, (primary* adj graft* adj dysfunct*).tw., 1,543

    19, or/3-18, 301,507

    20, *Cardiopulmonary Resuscitation/mt [Methods], 5,700

    21, *Extracorporeal Membrane Oxygenation/, 14,654

    22, ECMO.tw., 14,889

    23, *Extracorporeal Circulation/mt, 1,259

    24, (extracorp* adj circulat*).tw., 8,706

    25, (extracorp* adj ((cardiopulmon* adj resuscitat*) or CPR)).tw., 1,377

    26, ECPR.ti,ab., 1,006

    27, (Biomedicus adj pump*).tw., 45

    28, (Maquet* adj rotaflow*).tw., 12

    29, (jostra adj (pump* or rotaflow*)).tw., 5

    30, (levitronix adj (centrimag* or pump* or system* or oxygen*)).tw., 54

    31, (Medos adj (Hilite* or oxygen*)).tw., 22

    32, (left adj ventricle adj assist adj device).tw., 107

    33, or/20-32, 35,941

    34, 19 and 33, 6,390

    35, animals/ not humans/, 5,314,500

    36, 34 not 35, 6,296

    37, (exp child/ or exp pediatrics/ or exp infant/ or exp adolescent/) not (exp adult/ or exp middle age/ or exp aged/), 2,281,857

    38, 36 not 37, 5,768

    39, limit 38 to english language, 5,398

    40, limit 39 to ed=20130901-20250630, 3,883

    41, limit 39 to dt=20130901-20250630, 4,610

    42, 40 or 41, 4,707


    EMBASE search strategy

    1, heart failure/th [Therapy], 15,823

    2, acute disease/th [Therapy], 2,430

    3, 1 and 2, 10

    4, *cardiomyopathy/th [Therapy], 1,155

    5, *cardiogenic shock/th [Therapy], 2,198

    6, stunned heart muscle/th [Therapy], 53

    7, myocarditis/th [Therapy], 874

    8, *heart infarction/th [Therapy], 9,266

    9, "out of hospital cardiac arrest"/th [Therapy], 3,990

    10, ((acute* or severe* or refract*) adj (heart* or cardiac* or myocard* or cardio* or ventric*) adj (failur* or decompensation* or insufficient* or dysfunct* or stand* or still* or fault* or shock* or arrest* or stunn*)).tw., 32,685

    11, (cardiogen* adj shock).tw., 33,626

    12, Myocardit*.tw., 33,287

    13, ((Postpartum* or post-partum* or peripartum* or peri-partum*) adj cardiomyopath*).tw., 3,113

    14, (postcardiotomy or Post-cardiotomy).tw., 2,079

    15, PPCM.tw., 1,382

    16, (myocard* adj (stun* or hibernat* or infarct*)).tw., 360,780

    17, primary graft dysfunction/th [Therapy], 94

    18, (primary* adj graft* adj dysfunct*).tw., 3,390

    19, or/3-18, 448,325

    20, *resuscitation/, 62,739

    21, *extracorporeal oxygenation/, 18,275

    22, ECMO.tw., 32,585

    23, *extracorporeal circulation/, 9,325

    24, (extracorp* adj circulat*).tw., 10,199

    25, (extracorp* adj ((cardiopulmon* adj resuscitat*) or CPR)).tw., 2,110

    26, ECPR.tw., 2,050

    27, (Biomedicus adj pump*).tw., 50

    28, (Maquet* adj rotaflow*).tw., 33

    29, (jostra adj (pump* or rotaflow*)).tw., 17

    30, (levitronix adj (centrimag* or pump* or system* or oxygen*)).tw., 154

    31, (Medos adj (Hilite* or oxygen*)).tw., 46

    32, (left adj ventricle adj assist adj device).tw., 230

    33, or/20-32, 115,373

    34, 19 and 33, 15,247

    35, Nonhuman/ not Human/, 5,720,207

    36, 34 not 35, 14,988

    37, (conference abstract* or conference review or conference paper or conference proceeding).db,pt,su., 6,294,375

    38, 36 not 37, 6,986

    39, (exp child/ or exp pediatrics/ or exp adolescent/) not exp adult/, 2,766,023

    40, 38 not 39, 6,431

    41, limit 40 to english language, 5,795

    42, limit 41 to dd=20130901-20250630, 4,668

    43, limit 41 to dc=20130901-20250630, 4,655

    44, 42 or 43, 4,669

    45, Clinical trial.pt., 533,511

    46, 44 not 45, 4,461

    Cochrane Library (CDSR) search strategy

    #1 MeSH descriptor: [Heart Failure] this term only and with qualifier(s): [therapy - TH] 2567

    #2 MeSH descriptor: [Acute Disease] this term only and with qualifier(s): [therapy - TH] 115

    #3 #1 and #2 0

    #4 MeSH descriptor: [Cardiomyopathies] this term only and with qualifier(s): [therapy - TH] 86

    #5 MeSH descriptor: [Shock, Cardiogenic] this term only and with qualifier(s): [therapy - TH] 194

    #6 MeSH descriptor: [Myocardial Stunning] this term only and with qualifier(s): [therapy - TH] 3

    #7 MeSH descriptor: [Myocarditis] this term only and with qualifier(s): [therapy - TH] 13

    #8 MeSH descriptor: [Myocardial Infarction] this term only and with qualifier(s): [therapy - TH] 2729

    #9 MeSH descriptor: [Out-of-Hospital Cardiac Arrest] this term only and with qualifier(s): [therapy - TH] 568

    #10 ((acute* or severe*or refract*) next (heart* or cardiac* or myocard* or cardio* or ventric*) next (failur* or decompensation* or insufficient* or dysfunct* or stand* or still* or fault* or shock* or arrest* or stunn*)) 2872

    #11 (cardiogen* next shock) 1767

    #12 Myocardit* 1473

    #13 ((Postpartum* or post-partum* or peripartum* or peri-partum*) next cardiomyopath*) 50

    #14 (postcardiotomy or Post-cardiotomy) 48

    #15 PPCM 41

    #16 (myocard* next (stun* or hibernat* or infarct*)) 39538

    #17 MeSH descriptor: [Primary Graft Dysfunction] this term only and with qualifier(s): [therapy - TH] 3

    #18 (primary* next graft* next dysfunct*) 150

    #19 #3 or #4 or #5 or #6 or #7 or #8 or #9 or #10 or #11 or #12 or #13 or #14 or #15 or #16 or #17 or #18 44787

    #20 MeSH descriptor: [Cardiopulmonary Resuscitation] this term only and with qualifier(s): [methods - MT] 761

    #21 MeSH descriptor: [Extracorporeal Membrane Oxygenation] this term only and with qualifier(s): [methods - MT] 103

    #22 ECMO 1170

    #23 MeSH descriptor: [Extracorporeal Circulation] this term only and with qualifier(s): [methods - MT] 123

    #24 (extracorp* next circulat*) 1423

    #25 (extracorp* next ((cardiopulmon* next resuscitat*) or CPR)) 80

    #26 ECPR 127

    #27 (Biomedicus next pump*) 2

    #28 (Maquet* next rotaflow*) 2

    #29 (jostra next (pump* or rotaflow*)) 0

    #30 (levitronix next (centrimag* or pump* or system* or oxygen*)) 0

    #31 (Medos next (Hilite* or oxygen*)) 0

    #32 (left next ventricle next assist next device) 1

    #33 #20 or #21 or #22 or #23 or #24 or #25 or #26 or #27 or #28 or #29 or #30 or #31 or #32 3455

    #34 #19 AND #33 with Cochrane Library publication date Between Sep 2013 and Jun 2025, in Cochrane Reviews 30

    #35 conference:pt or (clinicaltrials or trialsearch or clinicaltrials.gov or www.who.int) 861611

    #36 #34 not #35 0

    Cochrane Central (CDSR) search strategy

    #1 MeSH descriptor: [Heart Failure] this term only and with qualifier(s): [therapy - TH] 2567

    #2 MeSH descriptor: [Acute Disease] this term only and with qualifier(s): [therapy - TH] 115

    #3 #1 and #2 0

    #4 MeSH descriptor: [Cardiomyopathies] this term only and with qualifier(s): [therapy - TH] 86

    #5 MeSH descriptor: [Shock, Cardiogenic] this term only and with qualifier(s): [therapy - TH] 194

    #6 MeSH descriptor: [Myocardial Stunning] this term only and with qualifier(s): [therapy - TH] 3

    #7 MeSH descriptor: [Myocarditis] this term only and with qualifier(s): [therapy - TH] 13

    #8 MeSH descriptor: [Myocardial Infarction] this term only and with qualifier(s): [therapy - TH] 2729

    #9 MeSH descriptor: [Out-of-Hospital Cardiac Arrest] this term only and with qualifier(s): [therapy - TH] 568

    #10 ((acute* or severeor refract) next (heart* or cardiac* or myocard* or cardio* or ventric*) next (failur* or decompensation* or insufficient* or dysfunct* or stand* or still* or fault* or shock* or arrest* or stunn*)) 2872

    #11 (cardiogen* next shock) 1767

    #12 Myocardit* 1473

    #13 ((Postpartum* or post-partum* or peripartum* or peri-partum*) next cardiomyopath*) 50

    #14 (postcardiotomy or Post-cardiotomy) 48

    #15 PPCM 41

    #16 (myocard* next (stun* or hibernat* or infarct*)) 39538

    #17 MeSH descriptor: [Primary Graft Dysfunction] this term only and with qualifier(s): [therapy - TH] 3

    #18 (primary* next graft* next dysfunct*) 150

    #19 #3 or #4 or #5 or #6 or #7 or #8 or #9 or #10 or #11 or #12 or #13 or #14 or #15 or #16 or #17 or #18 44787

    #20 MeSH descriptor: [Cardiopulmonary Resuscitation] this term only and with qualifier(s): [methods - MT] 761

    #21 MeSH descriptor: [Extracorporeal Membrane Oxygenation] this term only and with qualifier(s): [methods - MT] 103

    #22 ECMO 1170 #23 MeSH descriptor: [Extracorporeal Circulation] this term only and with qualifier(s): [methods - MT] 123

    #24 (extracorp* next circulat*) 1423

    #25 (extracorp* next ((cardiopulmon* next resuscitat*) or CPR)) 80

    #26 ECPR 127

    #27 (Biomedicus next pump*) 2

    #28 (Maquet* next rotaflow*) 2

    #29 (jostra next (pump* or rotaflow*)) 0

    #30 (levitronix next (centrimag* or pump* or system* or oxygen*)) 0

    #31 (Medos next (Hilite* or oxygen*)) 0

    #32 (left next ventricle next assist next device) 1

    #33 #20 or #21 or #22 or #23 or #24 or #25 or #26 or #27 or #28 or #29 or #30 or #31 or #32 3455

    #34 #19 AND #33 with Cochrane Library publication date Between Sep 2013 and Jun 2025, in Trials 499

    #35 conference:pt or (clinicaltrials or trialsearch or clinicaltrials.gov or www.who.int) 861611 #36 #34 not #35 295

    INHTA HTA Database search strategy

    1 , "Heart Failure"[mh] , 271

    2 , "Acute Disease"[mh] , 44

    3 , #2 AND #1 , 2

    4 , "Cardiomyopathies"[mh] , 25

    5 , "Shock, Cardiogenic"[mh] , 11

    6 , "Myocardial Stunning"[mh] , 1

    7 , "Myocarditis"[mh] , 2

    8 , "Myocardial Infarction"[mh] , 122

    9 , "Out-of-Hospital Cardiac Arrest"[mh] , 11

    10 , ((acute* or severe* or refract*) AND (heart* or cardiac* or myocard* or cardio* or ventric*) AND (failur* or decompensation* or insufficient* or dysfunct* or stand* or still* or fault* or shock* or arrest* or stunn*) , 268

    11 , (cardiogen* AND shock) , 19

    12 , Myocardit* , 5

    13 , ((Postpartum* or post-partum* or peripartum* or peri-partum*) AND cardiomyopath*) , 1

    14 , (postcardiotomy or Post-cardiotomy) , 0

    15 , PPCM , 0

    16 , (myocard* AND (stun* or hibernat* or infarct*)) , 236

    17 , "Primary Graft Dysfunction"[mh] , 0

    18 , (primary* AND graft* AND dysfunct*) , 3

    19 , #18 OR #17 OR #16 OR #15 OR #14 OR #13 OR #12 OR #11 OR #10 OR #9 OR #8 OR #7 OR #6 OR #5 OR #4 OR #3 , 523

    20 , "Cardiopulmonary Resuscitation"[mh] , 23

    21 , "Extracorporeal Membrane Oxygenation"[mh] , 28

    22 , ECMO , 30

    23 , "Extracorporeal Circulation"[mh] , 8

    24 , (extracorp* AND circulat*) , 13

    25 , (extracorp* AND ((cardiopulmon* AND resuscitat*) or CPR)): , 8

    26 , ECPR , 4

    27 , (Biomedicus AND pump*) , 0

    28 , (Maquet* AND rotaflow*) , 0

    29 , (jostra AND (pump* or rotaflow*)) , 0

    30 , (levitronix AND (centrimag* or pump* or system* or oxygen*)) , 0

    31 , (Medos AND (Hilite* or oxygen*)) , 0

    32 , (Left AND ventricle AND assist AND device) , 3

    33 , #32 OR #31 OR #30 OR #29 OR #28 OR #27 OR #26 OR #25 OR #24 OR #23 OR #22 OR #21 OR #20 , 72

    34 , #33 AND #19 , 29

    Inclusion criteria

    The following inclusion criteria were applied to the abstracts identified by the literature search.

    • Publication type: clinical studies were included with emphasis on identifying good quality studies. Abstracts were excluded if they did not report clinical outcomes. Reviews, editorials, and laboratory or animal studies, were also excluded and so were conference abstracts, because of the difficulty of appraising study methodology, unless they reported specific adverse events not available in the published literature.

    • Population: adults with postcardiotomy cardiogenic shock.

    • Intervention or test: VA ECMO.

    • Outcome: articles were retrieved if the abstract contained information relevant to the safety, efficacy, or both.

    If selection criteria could not be determined from the abstracts the full paper was retrieved.

    Potentially relevant studies not included in the main evidence summary are listed in Appendix B: Other relevant studies.

    Find out more about how NICE selects the evidence for the committee.