DANish Study of Optimal Acute Treatment of Patients With ST-elevation Myocardial Infarction (DANAMI-3)

A Randomised Comparison of the Clinical Outcome After Postconditioning or Deferred Stent Implantation Versus Conventional Treatment

Primary PCI in STEMI with implantation of DES. Following re-opening of the culprit artery mechanical postconditioning with 4 cycles of 30/30 sec. reperfusion/re-occlusion i performed.

In STEMI re-opening of the artery with guidewire/thrombectomy/small size balloon inflation DES stenting is postponed for 48 hours.

All cause mortality, myocardial infarction, repeat revascularisation and occurrence of definite stent thrombosis according to ARC definition within 1 year (deferred stent strategy)

Inclusion Criteria: Age ≥ 18 years. Acute onset of chest pain of < 12 hours' duration. ST-segment elevation ≥ 0.1 mV in ≥ 2 contiguous leads, signs of a true posterior infarction or documented newly developed left bundle branch block. Culprit lesion in a major native vessel. Exclusion Criteria: Pregnancy. Known intolerance of ASA, clopidogrel, heparin or contrast. Inability to understand information or to provide informed consent. Haemorrhagic diathesis or known coagulopathy. Stent thrombosis.

Mazhar J, Ekstrom K, Kozor R, Grieve SM, Nepper-Christensen L, Ahtarovski KA, Kelbaek H, Hofsten DE, Kober L, Vejlstrup N, Vernon ST, Engstrom T, Lonborg J, Figtree GA. Cardiovascular magnetic resonance characteristics and clinical outcomes of patients with ST-elevation myocardial infarction and no standard modifiable risk factors-A DANAMI-3 substudy. Front Cardiovasc Med. 2022 Aug 3;9:945815. doi: 10.3389/fcvm.2022.945815. eCollection 2022.

Ekstrom K, Nielsen JVW, Nepper-Christensen L, Ahtarovski KA, Kyhl K, Goransson C, Bertelsen L, Ghotbi AA, Kelbaek H, Hofsten DE, Kober L, Schoos MM, Vejlstrup N, Lonborg J, Engstrom T. Ischemia From Nonculprit Stenoses Is Not Associated With Reduced Culprit Infarct Size in Patients with ST-Segment-Elevation Myocardial Infarction. Circ Cardiovasc Imaging. 2021 May;14(5):e012290. doi: 10.1161/CIRCIMAGING.120.012290. Epub 2021 May 5.

Nepper-Christensen L, Hofsten DE, Helqvist S, Lassen JF, Tilsted HH, Holmvang L, Pedersen F, Joshi F, Sorensen R, Bang L, Botker HE, Terkelsen CJ, Maeng M, Jensen LO, Aaroe J, Kelbaek H, Kober L, Engstrom T, Lonborg J. Interaction of ischaemic postconditioning and thrombectomy in patients with ST-elevation myocardial infarction. Heart. 2020 Jan;106(1):24-32. doi: 10.1136/heartjnl-2019-314952. Epub 2019 Jul 17.

Ekstrom K, Nepper-Christensen L, Ahtarovski KA, Kyhl K, Goransson C, Bertelsen L, Ghotbi AA, Kelbaek H, Helqvist S, Hofsten DE, Kober L, Schoos MM, Vejlstrup N, Lonborg J, Engstrom T. Impact of Multiple Myocardial Scars Detected by CMR in Patients Following STEMI. JACC Cardiovasc Imaging. 2019 Nov;12(11 Pt 1):2168-2178. doi: 10.1016/j.jcmg.2019.01.032. Epub 2019 Apr 17.

Nepper-Christensen L, Lonborg J, Hofsten DE, Ahtarovski KA, Bang LE, Helqvist S, Kyhl K, Kober L, Kelbaek H, Vejlstrup N, Holmvang L, Engstrom T. Benefit From Reperfusion With Primary Percutaneous Coronary Intervention Beyond 12 Hours of Symptom Duration in Patients With ST-Segment-Elevation Myocardial Infarction. Circ Cardiovasc Interv. 2018 Sep;11(9):e006842. doi: 10.1161/CIRCINTERVENTIONS.118.006842.

Falkentoft AC, Rorth R, Iversen K, Hofsten DE, Kelbaek H, Holmvang L, Frydland M, Schoos MM, Helqvist S, Axelsson A, Clemmensen P, Jorgensen E, Saunamaki K, Tilsted HH, Pedersen F, Torp-Pedersen C, Kofoed KF, Goetze JP, Engstrom T, Kober L. MR-proADM as a Prognostic Marker in Patients With ST-Segment-Elevation Myocardial Infarction-DANAMI-3 (a Danish Study of Optimal Acute Treatment of Patients With STEMI) Substudy. J Am Heart Assoc. 2018 May 18;7(11):e008123. doi: 10.1161/JAHA.117.008123.

Lonborg J, Engstrom T, Ahtarovski KA, Nepper-Christensen L, Helqvist S, Vejlstrup N, Kyhl K, Schoos MM, Ghotbi A, Goransson C, Bertelsen L, Holmvang L, Pedersen F, Jorgensen E, Saunamaki K, Clemmensen P, De Backer O, Klovgaard L, Hofsten DE, Kober L, Kelbaek H; DANAMI-3 Investigators. Myocardial Damage in Patients With Deferred Stenting After STEMI: A DANAMI-3-DEFER Substudy. J Am Coll Cardiol. 2017 Jun 13;69(23):2794-2804. doi: 10.1016/j.jacc.2017.03.601.

Topal DG, Lonborg J, Ahtarovski KA, Nepper-Christensen L, Helqvist S, Holmvang L, Pedersen F, Clemmensen P, Saunamaki K, Jorgensen E, Kyhl K, Ghotbi A, Schoos MM, Goransson C, Bertelsen L, Hofsten D, Kober L, Kelbaek H, Vejlstrup N, Engstrom T. Association Between Early Q Waves and Reperfusion Success in Patients With ST-Segment-Elevation Myocardial Infarction Treated With Primary Percutaneous Coronary Intervention: A Cardiac Magnetic Resonance Imaging Study. Circ Cardiovasc Interv. 2017 Mar;10(3):e004467. doi: 10.1161/CIRCINTERVENTIONS.116.004467.

Engstrom T, Kelbaek H, Helqvist S, Hofsten DE, Klovgaard L, Clemmensen P, Holmvang L, Jorgensen E, Pedersen F, Saunamaki K, Ravkilde J, Tilsted HH, Villadsen A, Aaroe J, Jensen SE, Raungaard B, Botker HE, Terkelsen CJ, Maeng M, Kaltoft A, Krusell LR, Jensen LO, Veien KT, Kofoed KF, Torp-Pedersen C, Kyhl K, Nepper-Christensen L, Treiman M, Vejlstrup N, Ahtarovski K, Lonborg J, Kober L; Third Danish Study of Optimal Acute Treatment of Patients With ST Elevation Myocardial Infarction-Ischemic Postconditioning (DANAMI-3-iPOST) Investigators. Effect of Ischemic Postconditioning During Primary Percutaneous Coronary Intervention for Patients With ST-Segment Elevation Myocardial Infarction: A Randomized Clinical Trial. JAMA Cardiol. 2017 May 1;2(5):490-497. doi: 10.1001/jamacardio.2017.0022.

Nepper-Christensen L, Lonborg J, Ahtarovski KA, Hofsten DE, Kyhl K, Ghotbi AA, Schoos MM, Goransson C, Bertelsen L, Kober L, Helqvist S, Pedersen F, Saunamaki K, Jorgensen E, Kelbaek H, Holmvang L, Vejlstrup N, Engstrom T. Left Ventricular Hypertrophy Is Associated With Increased Infarct Size and Decreased Myocardial Salvage in Patients With ST-Segment Elevation Myocardial Infarction Undergoing Primary Percutaneous Coronary Intervention. J Am Heart Assoc. 2017 Jan 9;6(1):e004823. doi: 10.1161/JAHA.116.004823.

Kelbaek H, Hofsten DE, Kober L, Helqvist S, Klovgaard L, Holmvang L, Jorgensen E, Pedersen F, Saunamaki K, De Backer O, Bang LE, Kofoed KF, Lonborg J, Ahtarovski K, Vejlstrup N, Botker HE, Terkelsen CJ, Christiansen EH, Ravkilde J, Tilsted HH, Villadsen AB, Aaroe J, Jensen SE, Raungaard B, Jensen LO, Clemmensen P, Grande P, Madsen JK, Torp-Pedersen C, Engstrom T. Deferred versus conventional stent implantation in patients with ST-segment elevation myocardial infarction (DANAMI 3-DEFER): an open-label, randomised controlled trial. Lancet. 2016 May 28;387(10034):2199-206. doi: 10.1016/S0140-6736(16)30072-1. Epub 2016 Apr 3.

Hofsten DE, Kelbaek H, Helqvist S, Klovgaard L, Holmvang L, Clemmensen P, Torp-Pedersen C, Tilsted HH, Botker HE, Jensen LO, Kober L, Engstrom T; DANAMI 3 Investigators. The Third DANish Study of Optimal Acute Treatment of Patients with ST-segment Elevation Myocardial Infarction: Ischemic postconditioning or deferred stent implantation versus conventional primary angioplasty and complete revascularization versus treatment of culprit lesion only: Rationale and design of the DANAMI 3 trial program. Am Heart J. 2015 May;169(5):613-21. doi: 10.1016/j.ahj.2015.02.004. Epub 2015 Feb 14.