_____________________________________________________________________________________________________ *Corresponding author: E-mail: mohamed.khalil633@yahoo.com; Journal of Advances in Medicine and Medical Research 32(9): 83-93, 2020; Article no.JAMMR.58185 ISSN: 2456-8899 (Past name: British Journal of Medicine and Medical Research, Past ISSN: 2231-0614, NLM ID: 101570965) A Short Term Clinical Outcome of Provisional versus Routine Kissing Balloon Technique after Main Vessel Crossover Stenting for Coronary Bifurcation Lesions Mohamed Ahmed Khalil 1* , Fatehia Ahmed Elsheshtawy 1 , Medhat Mohamed Ashmawy 1 , Samiah Mahmoud Sharaf El-Din 1 and Ayman Mohamed Elsaeed 1 1 Cardiovascular Medicine Department, Faculty of Medicine, Tanta University, Egypt. Authors’ contributions This work was carried out in collaboration among all authors. Author MAK designed the study, performed the statistical analysis, wrote the protocol and wrote the first draft of the manuscript. Authors FAE and MMA managed the analyses of the study. Authors SMSE and AME managed the literature searches. All authors read and approved the final manuscript. Article Information DOI: 10.9734/JAMMR/2020/v32i930488 Editor(s): (1) Dr. Murali P. Vettath, Meitra Hospital, India. Reviewers: (1) Hamed Tavan, Ilam University of Medical Sciences, Iran. (2) Stoia Mirela-Anca, University of Medicine and Pharmacy Iuliu Haţieganu, Romania. Complete Peer review History: http://www.sdiarticle4.com/review-history/58185 Received 18 April 2020 Accepted 21 June 2020 Published 30 June 2020 ABSTRACT Background: Kissing Balloon Inflation (KBI) technique was the first technique for percutaneous intervention in bifurcation lesions. It's the standard strategy in the two-stent procedure. Its benefit in one-stent approach remains uncertain. Several trials comparing KBI strategy with the No-KBI strategy in one-stent technique did not show any advantages in the clinical outcome. Clinical outcome and the follow up of ischemic symptoms is a useful method to compare the effectiveness of both strategies. Aims: To study the short-term clinical outcome (3and 6 months) of provisional versus routine kissing‑balloon technique after main vessel stenting for coronary bifurcation lesions. Patients and Methods: The study included sixty consecutive patients. They were randomized to receive different side branch (SB) intervention strategies: group I (provisional final kissing balloon Original Research Article