Equine Health Update EHU Vol 19 Issue 3 - Page 28

EQUINE | Proceedings easily and it is frequently in excess of 5cm. On the right side, the caecum is unexciting. Almost ev- eryone who has heard about ultrasonography of the ab- domen knows of its use for identifying intussusceptions – the β€œtarget lesion”. This is a very minor use of abdomi- nal ultrasonography. Further cranially, between T 10 and 14, there is an important window. Ventral to the lung field, the liver is easily visualised, and deep to this the right dorsal colon lies against the liver as an echogenic bright line. In right dorsal colitis the wall of the colon is obviously thicker in this site [2]. Between the colon and the liver, the duodenum can be seen. It is not always visible, hidden under the lung field at times. However, distension of the duodenum is usually clearly visible and is a cardinal sign of gastric distension and reflux. Post operative ultrasonography has been one of the de- velopments of recent years. Monitoring distension of the duodenum is very valuable in the management of ileus. We used to religiously follow the dogma of stom- ach tubing a horse every four hours, which is stressful for the horse and staff. We now scan the duodenum and only stomach tube if there is duodenal distension, or signs of abdominal pain, or an increasing heart rate. In- testinal motility can be assessed subjectively, simply by watching a patch of small intestine patiently. This can affect the decision to re-operate, or to advise a client about the economic impact of continued management. Acid Base Status You will all be familiar with the three rules of blood gas interpretation, p02 is proportional to shunting in the lungs, pC02 is proportional to alveolar ventilation, and the the Henderson Hasselbach e ΕΥ…Ρ₯½Έ½Ή•ΙΈ΄)₯Ήœ…₯‰…Ν”‰…±…Ή”Έ9½Ρέ₯Ρ‘ΝΡ…Ή‘₯ΉœΡ‘…Ёё•Ι”…Ι”)΅…ΉδƒŠq…ΑΑϊtΉ½άέ‘₯ έ₯±°‘ΌΡ‘”₯ΉΡ•ΙΑΙ•Ρ…Ρ₯½Έ™½Θ)ε½Τ°…₯‰…Ν”‰…±…Ή”₯́ΝΡ₯±°„΅₯Ή•™₯•±™½ΘΡ‘”ΝΥɝ•½Έ°)έ₯Ρ Ι•ΝΑ₯Ι…Ρ½Ι䁍½Ή‘₯Ρ₯½ΉΜΝΥΑ•Ι₯΅Α½Ν•½Έ΅•Ρ…‰½±₯Œ)½Ή‘₯Ρ₯½ΉΜΈQ‘•Ι”₯́…Έ•…Ν₯•Θέ…丁́•ΕΥ₯Ή”ΝΥɝ•½ΉΜ(Θΰ)έ”…Ι”Ή½ΠΥΝΥ…±±δΡ‘…Ё‰½Ρ‘•Ι•‰δ‘Ι½Ή₯Œ±ΥΉœ‘₯Μ΄)•…Ν”°…Ή½Υȁ₯ΉΡ•Ι•ΝЁ₯́΅•Ρ…‰½±₯Œ…₯‘½Ν₯Μ€‘½Θ…±­…±½Ν₯Μ€Έ)Q‘ΥΜ°Ι…Ρ‘•ΘΡ‘…Έ΅•…ΝΥΙ₯ΉœΡ‘” ΐȁ±•Ω•±Μ°…Ё½ΉΝ₯‘•Θ΄)…‰±”•αΑ•ΉΝ”°έ”½Υ±©ΥΝЁ΅•…ΝΥΙ”Ρ‘”΅•Ρ…‰½±₯Œ…₯Έ)1…Ρ…Ρ”₯́ё”ΑΙ½‘ՍЁ½˜…Ή…•Ι½‰₯Œ΅•Ρ…‰½±₯Ν΄Έ5•„΄)ΝΥΙ•΅•ΉΠ½˜₯Ё‘…́ΡέΌΑΙ₯Ή₯Α±”ΥΝ•ΜƒŠL…́„΅•…ΝΥΙ”½˜)Ρ₯ΝΝΥ”Α•Ι™ΥΝ₯½Έ°…Ή…́„΅•…ΝΥΙ”½˜…•Ι½‰₯Œ™₯ΡΉ•Ν́…Π)₯ΉΡ•ΉΝ”•α•Ι₯Ν”ΈΥ”ΡΌ₯Ρ́±…ΡѕȁΥΝ”Ρ‘•Ι”₯́„±…ɝ”)΅…Ι­•Π™½ΘΑ½ΙΡ…‰±”±…Ρ…Ρ”…Ή…±εΝ•Ί₯Έ‘Υ΅…ΈΝΑ½ΙΡΜ)΅•‘₯₯Ή”°…ΉΡ‘•δ…Ι”Ι•±…Ρ₯Ω•±δ‘•…ΐ…Ή…Ω…₯±…‰±”Έ)]”ΥΝ”Ρ‘”…Ή…±εΝ•Θ°έ‘₯ ½ΝΠƒ ŒΜΐΐ°…ΉΡ‘”₯Έ΄)‘₯Ω₯‘Υ…°ΝΡΙ₯Ά½ΝЁ…‰½ΥΠƒ ŒΔΈQ‘”…Ή…±ε͕ȁ₯́‘…Ή‘‘•±°)Ι•ΕΥ₯ɕ́„‘Ι½ΐ½˜‰±½½…Ή₯ٕ́„ƒŠq‘½ΙΝ”Ν₯‘—ŠtΙ•ΝձЁ₯Έ)„™•άΝ•½Ή‘ΜΈ1…Ρ…Ρ”…Έ…±ΝΌ‰”΅•…ΝΥΙ•₯ΈΑ•Ι₯ΡΌ΄)Ή•…°™±Υ₯ΥΝ₯ΉœΡ‘”Ν…΅”΅•Ρ•ΘΈ)Q‘”΅•Ρ•Ί…ΡΥ…±±δ΅•…ΝΥΙ”Α±…Ν΅„±…Ρ…Ρ”…Ή„½Θ΄)Ι•Ρ₯½Έ™…Ρ½Θ₯́…ΑΑ±₯•ΡΌ…½ΥΉΠ™½ΘΡ‘”±½έ•Θ₯ΉΡΙ„΄)•±±Υ±…ȁ±•Ω•±Μ½˜±…Ρ…Ρ”ΈQ‘•Ι•™½Ι”…±₯‰Ι…Ρ₯½Έ½˜Ρ‘”)΅•Ρ•Ίέ₯Ρ •… Ή•ά‰…э ½˜ΝΡΙ₯Ά₯́ɕ½΅΅•Ή‘•)Ρ‘½Υ ₯͕́±‘½΄ΑΙ…Ρ₯•ΈI…Α₯€‘‘½ΙΝ”Ν₯‘”€Ρ•ΝΡ₯Ήœ)₯́Ή••ΝΝ…Ι䁽ȁё”‰±½½Ν…΅Α±”΅ΥΝЁ‰”ΝΡ½Ι•₯Έ„)΅•Ρ…‰½±₯Œ₯Ή‘₯‰₯Ρ½Θ€‘™±Υ½Ι₯‘”½α…±…Ρ”½ΘΙ•δΡ½ΐ€Έ5½Ι”)Ι•±•Ω…ΉΡ±δ°Ρ‘”½ΙΙ•Ρ₯½Έ™…Ρ½Θ™½ΘΑ±…Ν΅„€Ό₯ΉΡΙ…•±±Υ±…Θ)±…Ρ…Ρ”±•Ω•±Μ΅•…ΉΜΡ‘…Ёё”Ι•…‘₯Ήœ₯́₯Ή…ΥΙ…Ρ”έ₯Ρ )„A X½˜Ι•…ѕȁё…Έ€ΤΜ”Έ)Q‘₯́…Έ‰”Ι•±•Ω…ΉΠέ₯Ρ Ν•Ω•Ι”½±₯Œ…͕́…Ή₯́₯΄΄)Α½ΙΡ…ΉΠ₯˜Ρ‘”΅•Ρ•Θ₯́ΥΝ•™½Θ•α•Ι₯Ν”Α‘εΝ₯½±½δ½Θ)™½Θ΅½Ή₯Ρ½Ι₯Ήœ΅½Ι”‘Ι½Ή₯Œ…Ν•Μ°ΡεΑ₯…±±δΝ•Ω•Ι”‘₯…Θ΄)Ι‘½•„ΈQ‘”΅•Ρ•Ί…±ΝΌΥΉ‘•Ι•ΝΡ₯΅…Ρ”±…Ρ…Ρ”½Ή•Έ΄)ΡΙ…Ρ₯½ΉΜ€ψ€ΔΑ΅΅½°½°°‰ΥЁё₯́‘•Ι•”½˜±…Ρ₯Œ…₯‘½Ν₯Μ)₯́ΝΥ™™₯₯•ΉΠΡ‘…Ёё”ΑΙ•₯Ν”΅•…ΝΥΙ•΅•ΉΠ₯́չΉ••Μ΄)Ν…Ι丁Q‘”ΥΝ”½˜±…Ρ…Ρ”…́„΅…Ι­•Θ½˜Ν•Ω•Ι”‘₯Ν•…Ν”°„)ΑΙ½Ή½ΝΡ₯Œ₯Ή‘₯…Ρ½Θ°…Ή„ΡΙ₯•ΘΑ½₯ΉΠ™½ΘΡ‘•Ι…Α䁑…Μ)ΝΡ½½Ρ‘”Ρ•ΝЁ½˜Ρ₯΅”₯Έ‘Υ΅…ΈΙ₯Ρ₯…°…Ι”lΝtΈ)9½Ι΅…°•ΕΥ₯Ή”±•Ω•±Μ…Ι”‰•Ρέ••Έ€ΐΈΨ…Ή€ΔΈΤ΅΅½°½°)lΡtΈQ‘”ΡΙ…‘₯Ρ₯½Ή…°€‘΅•Ι₯…Έ€ΥΉ₯Ρ́…Ι”΅œ½‘°°…Ή΅…Ήδ+ŠˆΕΥ₯Ή”!•…±Ρ UΑ‘…Ρ”ƒŠ