John Papanikolaou, MD, PhD

Clinical Images
Twin Hearts in Identical Twins
06/27/2017
When premature coronary artery disease is found in one of a monozygotic twin pair, evaluating the other twin is a reasonable approach.
When premature coronary artery disease is found in one of a monozygotic twin pair, evaluating the other twin is a reasonable approach.
When premature coronary artery...
06/27/2017
Journal of Invasive Cardiology
Karelas Screenshot
Video
Coronary Angiography Demonstrating Anomalous Coronary Artery From the Opposite Sinus
06/01/2022
A 75-year-old woman was referred to our center for coronary angiography due to atypical chest discomfort unrelated to exertion and accompanying CAD risk factors. Imaging revealed complex anatomic anomalies, which are highlighted in the...
A 75-year-old woman was referred to our center for coronary angiography due to atypical chest discomfort unrelated to exertion and accompanying CAD risk factors. Imaging revealed complex anatomic anomalies, which are highlighted in the...
A 75-year-old woman was referred...
06/01/2022
Journal of Invasive Cardiology
KarelasScreenshot
Clinical Videos
Diagnosis and Treatment of Unilateral Pulmonary Edema
08/01/2022
Unilateral pulmonary edema, which manifests as a classic radiographic image, is usually misdiagnosed. This video series illustrates the diagnosis and treatment of a 72-year-old man with unilateral pulmonary edema.
Unilateral pulmonary edema, which manifests as a classic radiographic image, is usually misdiagnosed. This video series illustrates the diagnosis and treatment of a 72-year-old man with unilateral pulmonary edema.
Unilateral pulmonary edema,...
08/01/2022
Journal of Invasive Cardiology
Karelas Video 1
Video
RAS, Excision of Avulsed Fragment, and Uncompromised Flow
04/03/2023
Video Supplement to "Radial Artery Spasm, Excision of Avulsed Fragment and Uncompromised Flow: An Oxymoron in Invasive Cardiology'
Video Supplement to "Radial Artery Spasm, Excision of Avulsed Fragment and Uncompromised Flow: An Oxymoron in Invasive Cardiology'
Video Supplement to "Radial...
04/03/2023
Journal of Invasive Cardiology
Clinical Images
Radial Artery Spasm, Excision of Avulsed Fragment and Uncompromised Flow: An Oxymoron in Invasive Cardiology
04/01/2023
A 63-year-old man with a history of smoking, panic attacks, and positive treadmill test was referred for invasive coronary angiography (CA). By a right radial artery (RA) approach, there was difficulty advancing the sheath and the standard...
A 63-year-old man with a history of smoking, panic attacks, and positive treadmill test was referred for invasive coronary angiography (CA). By a right radial artery (RA) approach, there was difficulty advancing the sheath and the standard...
A 63-year-old man with a history...
04/01/2023
Journal of Invasive Cardiology
Clinical Images
Intrapericardial Blood Re-transfused to Venous Circulation Through a Closed Circuit: A Life-Saving Management of Hemopericardium
06/02/2023
A 78-year-old male developed hemopericardium and hemodynamic collapse after an unsuccessful chronic total occlusion percutaneous coronary intervention (CTO-PCI). Echocardiographically-assisted emergent subxiphoid pericardiocentesis was...
A 78-year-old male developed hemopericardium and hemodynamic collapse after an unsuccessful chronic total occlusion percutaneous coronary intervention (CTO-PCI). Echocardiographically-assisted emergent subxiphoid pericardiocentesis was...
A 78-year-old male developed...
06/02/2023
Journal of Invasive Cardiology
Clinical Images
Cath Lab Activation With Smartwatch’s Electrocardiogram Tracings
07/06/2023
A 67-year-old man with a history of smoking, hyperlipidemia, and hypertension complained of central chest pain radiating to his left arm for 2 hours and contacted the attending cardiologist. Based on medical history and symptom description,...
A 67-year-old man with a history of smoking, hyperlipidemia, and hypertension complained of central chest pain radiating to his left arm for 2 hours and contacted the attending cardiologist. Based on medical history and symptom description,...
A 67-year-old man with a history...
07/06/2023
Journal of Invasive Cardiology
Clinical Images
ACAOS (Anomalous Coronary Artery From the Opposite Sinus) as Part of a Chaos: 75 Years of Harmonious Occult Coexistence
06/01/2022
A 75-year-old woman was referred to our center for coronary angiography (CA) due to atypical chest discomfort unrelated to exertion and accompanying coronary artery disease risk factors (hypertension, type 2 diabetes, former smoker). CA was...
A 75-year-old woman was referred to our center for coronary angiography (CA) due to atypical chest discomfort unrelated to exertion and accompanying coronary artery disease risk factors (hypertension, type 2 diabetes, former smoker). CA was...
A 75-year-old woman was referred...
06/01/2022
Journal of Invasive Cardiology
Clinical Images
A Lifesaver Trinity for Unilateral Pulmonary Edema in a Cardiac Intensive Care Unit
08/01/2022
A 72-year-old man with chronic obstructive pulmonary disease (COPD) complained of worsening dyspnea. Physical examination revealed a soft systolic murmur best heard at the apex, third cardiac sound, hypoventilation of the right lung, and...
A 72-year-old man with chronic obstructive pulmonary disease (COPD) complained of worsening dyspnea. Physical examination revealed a soft systolic murmur best heard at the apex, third cardiac sound, hypoventilation of the right lung, and...
A 72-year-old man with chronic...
08/01/2022
Journal of Invasive Cardiology
Clinical Images
An Antisepsis Misfortune: Povidone-Iodine-Induced Chemical Burn Near the Pacemaker Implantation Site
09/12/2024
A 76-year-old woman was scheduled for pacemaker implantation due to sick sinus syndrome. The skin was prepared with the usual povidone-iodine solution. During the procedure, she experienced intense burning and discomfort on the left upper...
A 76-year-old woman was scheduled for pacemaker implantation due to sick sinus syndrome. The skin was prepared with the usual povidone-iodine solution. During the procedure, she experienced intense burning and discomfort on the left upper...
A 76-year-old woman was...
09/12/2024
Journal of Invasive Cardiology

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