'Ping' Flashcards
Why does a ‘ping’ occur?
Gas fluid interface
Normal location of abomasum
Ventrum just right to midline
Left sided ‘ping’
Left displaced abomasum (cranioventral)
Right sided ping craniodorsally, close to last rib over a large area and can’t be felt on rectal exam
Right displaced abomasum
Right abomasal volvulus (more painful/systemically unwell)
Right sided ping, caudodorsal over large area/~30cm, felt on rectal exam (enters pelvic inlet once distended)
Caecum torsion/dilation
How do you diagnose caecum torsion or dilation?
Ex lap
Right sided ventral, (multi)focal small pings
Small intestine (leave before surgery)
Why can there be a ping after surgery?
Free gas in abdomen/pneumoperitoneum (anywhere/any side/any size), will dissipate in time
What ping can peritonitis cause?
Anywhere/any side/any size
Gas producing bacteria
3w post-op/perforated abomasal ulcer
Ancillary tests for a ‘ping’
Ballot cow while listening
Aspirate fluid and test pH with litmus paper/look under microscope
Ultrasound
Which ping causing pathology will rock with animal when balloted?
Abomasal displacement
Abomasal fluid pH
~2-3
Abomasal fluid under microscope
No protozoa, bacteria unlikely
Rumen fluid pH
~5-6
Rumen fluid microscopy findings
Protozoa and bacteria
