Hello and welcome to HCM,
Air bubbles are associated with infection caused by clostridium welchi.
Clostridium welchi is a rare cause of urinary tract infection
However, a urine culture and sensitivity can be done.
Urine culture will identify the organism causing the UTI.
The culture sensitivity will identify the most appropriate antibiotic effective against the causative organism.
The urine examination will identify the sediments that you are observing in the urine.
Thanks and take care
Dr Shailja P Wahal