This looks like Kussmaul’s sign, classically associated with constructive pericarditis but other potential causes (tamponade, right heart failure, tricuspid stenosis, etc)
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It’s an unfairly short clip so we’re not able to see if there’s respiratory variation. I would have guessed Corrigan’s pulse but it is venous rather than arterial- Lancisi’s Sign in severe tricuspid regurgitation.
End of conversation
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