How to understand Sputum/Bronchoscopy and CT changes over time
Diagnosed Oct 22 based on Bronch #1. Been on daily Azithromycin, Rifampin, inhaled Arikayce since April 2023 (Ethambutol caused eye issues). I've had two add'l Bronchs in Sept 2023 and Feb 2024. Although the information provided by lab is very limited, there seemed to be glimmer of improvement between Sept and Feb, but not sure if I can jump to that conclusion. In Sept 23, the initial smear was positive, followed by positive lab culture in only 3 weeks; in Feb 24, the initial smear was negative, and nothing grew in the lab for 7+ wks...taking another 3 wks for there to be enough growth for the lab to identify MAC. Can I assume that these changes indicate, while still positive, the bacterial load is decreasing (the drugs are doing some good)?
Also, my initial CT scan identified 2 cavities measuring less than 2cm. in my second CT, one of these was "replaced by a solid soft tissue nodule". Can I assume this indicates improvement, i.e., a "nodule" is better than a cavity...perhaps the cavity has collapsed??
Yes, I asked my pulmonologist about both these questions. While I trust him, he's seems to avoid the gray areas when providing information. If he can't tell me something definitive, he's not going to speculate. I get it, but I could really use some good news even if only minimal.
Lastly, I have a general question about lab cultures. If MAC is pervasive in the environment and therefore likely present in most/all lungs, then doesn't it follow that any sputum sample with MAC in it is going to grow in a nice friendly culture environment? How does this prove an active infection in one person's lungs vs someone who is not infected? Is it only when coupled with CT evidence of lung damage that the MAC infection can be assumed as the cause?
Thanks in advance.
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When at the Mayo now 3 weeks ago, I bought a nebulizer there that works great. I’m using 3% saline solution and an Aerobika . The respiratory specialist gave me a special mouthpiece (PariLCPlus) for the nebulizer with tubing. He showed me how to use the aerobika while nebulizing. That said, I just can’t cough up enough sputum for a decent sample.
It sounds like you've had excellent airway clearance advice. You might want to ask your therapist the following:
-how much sputum do they need? I was once working with a therapist who was doing manual therapy on me and I coughed up a dime size sample. We sent it to the lab and it grew MAC.
-could you use 7 or 10 % just for the sputum sample?
-have you tried exercising before airway clearance?
-what about postural drainage? Many therapists don't like it because it increases the probability of reflux but sometimes it boils down to priorities
-what about using the smartphone autogenic drainage app?
-would a hand-held massage gun make a difference?
I hope this is helpful,
Linda Esposito
Thanks so much for all of the suggestions! Much to think about. While I was at the Mayo, the samples I produced they said were not a quality for plating. I have sent decent size samples, so hope the two they now have might do it. I will attempt some of the suggestions you noted above. Thanks again!
My pulmonologist suggested that I just nebulize with albuteral, no salt, and try coughing to get a sputum sample. This is just to get a sample. Hope this helps.
How do you nebulize with albuterol? I do have an inhaler from before I went to Combivent. Do you spray/inhale, then use the nebulizer?