Related Experiment Video
Updated: Feb 1, 2026

Standardized Technique of Aortic Valve Re-implantation for Valve-sparing Aortic Root Replacement
Published on: December 11, 2017
An unusual case of cardiogenic shock late following surgical aortic valve replacement
Maria Chiara Todaro1, Alfonso Ielasi1, Antonio Silvestro1
1Cardiology Department, Bolognini Hospital, Seriate, Italy.
The present case describes a rare but potentially life-threatening complication following surgical aortic valve replacement (AVR): iatrogenic coronary ostial stenosis (ICOS). The incidence of ICOS is estimated to be between 0.3% and 5% of all AVR and it generally occurs within 6 months after the procedure. In most cases, either the left main stem or the ostium of the right coronary artery (RCA) is affected, although stenosis of the ostium of the left anterior descending artery can also occur. However, to the best of our knowledge, the simultaneous involvement of both coronary ostia, presenting with rapid onset cardiogenic shock requiring inotropic support and intra-aortic balloon pump placement, has never been reported. <Learning objective: Iatrogenic coronary ostial stenosis (ICOS) is a rare but possible complication that can occur after aortic valve replacement. When ICOS is suspected, especially in unstable patients, a prompt diagnosis and early revascularization therapy is crucial. In this clinical setting, coronary percutaneous coronary intervention appears to be the best revascularization option.>.
The present case describes a rare but potentially life-threatening complication following surgical aortic valve replacement (AVR): iatrogenic coronary ostial stenosis (ICOS). The incidence of ICOS is estimated to be between 0.3% and 5% of all AVR and it generally occurs within 6 months after the procedure. In most cases, either the left main stem or the ostium of the right coronary artery (RCA) is affected, although stenosis of the ostium of the left anterior descending artery can also occur. However, to the best of our knowledge, the simultaneous involvement of both coronary ostia, presenting with rapid onset cardiogenic shock requiring inotropic support and intra-aortic balloon pump placement, has never been reported. <Learning objective: Iatrogenic coronary ostial stenosis (ICOS) is a rare but possible complication that can occur after aortic valve replacement. When ICOS is suspected, especially in unstable patients, a prompt diagnosis and early revascularization therapy is crucial. In this clinical setting, coronary percutaneous coronary intervention appears to be the best revascularization option.>.
More Related Videos
Related Concept Videos
Unusual Results
According to the range rule of thumb, any value above or below two standard deviations, 2σ from the mean, μ is considered unusual.
Maximum unusual value =...
z Scores and Unusual Values
This score indicates how far a value is from the mean in terms of standard deviation. For example, if a data value has a z score of +1, the researcher can infer that the particular data value is one standard deviation above the mean. If another data...
Shock Waves
When the source's speed approaches the speed of sound, constructive interference between successive wavefronts emitted by the source occurs immediately behind it. Initially, scientists believed that this constructive interference would result in such high...
Heart Valves
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...
Continuous Renal Replacement Therapy
Mitral Valve Prolapse I: Introduction

