title: Comparison between balloon angioplasty and additional coronary stent implantation for the treatment of drug-eluting stent restenosis: 18-month clinical outcomes.
abstract: OBJECTIVE
  To evaluate the long-term outcomes after different modalities of treatment of drug-eluting stent (DES) in-stent restenosis (ISR) in a 'real world' setting.
  
  
  METHODS
  Actually, few and conflicting data are available about the management of in-stent restenosis (ISR) after DES implantation. In our 'real world' registry 1082 consecutive patients who received a DES implantation were included. At 9-month angiographic follow-up, 93 patients presented a DES ISR that was treated with 'homo-DES' (HMD) (N = 27), 'hetero-DES' (HTD) (N = 19) and conventional balloon angioplasty (POBA) (N = 47). We evaluated the clinical outcomes in terms of major adverse cardiac event (MACE) (death, myocardial infarction and target vessel revascularization) at 18 months.
  
  
  RESULTS
  There was no difference for clinical and angiographic characteristics between the three groups, except for the presence of silent ischaemia as clinical presentation (7.7 HMD vs. 2.2% POBA; P = 0.0001). No late stent thrombosis was found. At 18-month clinical follow-up patients treated with HMD, HTD and POBA presented a rate of MACE of 10.2, 0 and 8.7%, respectively (P = NS). Kaplan-Meier survival probability showed that HTD and POBA treatment tended to have more favourable outcomes at 18 months than the HMD treatment.
  
  
  CONCLUSIONS
  In our registry, POBA seems to be as effective as other DES implantations in cases of DES ISR, especially in cases of focal type (Mehran classification IA, IC), in terms of long-term outcomes.
authors.affiliation: Department of Cardiovascular Sciences, Policlinico Umberto I, 'Sapienza' University of Rome, Rome, Italy. rino.sardella@uniroma1.it
authors.forename: Gennaro
authors.initials: G
authors.lastname: Sardella
authors.forename: Riccardo
authors.initials: R
authors.lastname: Colantonio
authors.forename: Leonardo
authors.initials: L
authors.lastname: De Luca
authors.forename: Giulia
authors.initials: G
authors.lastname: Conti
authors.forename: Angelo
authors.initials: A
authors.lastname: Di Roma
authors.forename: Massimo
authors.initials: M
authors.lastname: Mancone
authors.forename: Emanuele
authors.initials: E
authors.lastname: Canali
authors.forename: Giulia
authors.initials: G
authors.lastname: Benedetti
authors.forename: Francesco
authors.initials: F
authors.lastname: Fedele