Quoted from linked site below:I've always been asked to sniff
i have no idea why though
IVC Assessment With Echo: What Does IVC Collapse Even Mean"By doing this “sniff test”, we can look at the inferior vena cava and see if it collapses or not. If it doesn’t collapse, or decrease in diameter of at least 50%, then we know the right atrial pressure is even higher. By asking the patient to sniff, it generates a sudden decrease in intrathoracic pressure, which would normally cause the IVC to collapse at least 50%."
Hi Catwoman. I also have a Micra leadless Medtronic pacemaker. I have A fib 100% of the time. Had a mitral repair and a ASD surgery when I was 7 years old in 1957. Dr Walter Lillehei pioneer children’s surgeon. And mitral valve replacement in 2001 at Cleveland Clinic. Long journey. Good luck and thank God for all the advancesNeither my husband nor I have ever been asked to sniff during an echo. I’ve had echoes going back to 1990 at a variety of cardiologists’ practices and at one or 2 hospitals.
My husband has his semi-annual cardio visit + annual echo in January. I’ll ask about the sniff test then.
I have had mitral valve replacement; my husband has had mitral valve repair (chordae replaced), has a Micra AV pacemaker and has a-fib.