VTNE common mistakes
VTNE · Understand the traps and how to avoid them.
Reads a drug label given as a percentage (e.g., 2% lidocaine) as if it were 2 mg/mL and calculates the dose from that number.
Percent concentrations are rarely encountered in day-to-day arithmetic, so candidates plug the visible number straight into the dose formula instead of converting it first.
What to do instead
Convert every percentage to mg/mL before doing anything else: multiply the percent by 10 (2% = 20 mg/mL, 0.5% = 5 mg/mL, 1:1000 epinephrine = 1 mg/mL). Write the units on every line of the calculation and sanity-check the final volume against a rough estimate.
Calculates a local anesthetic or constant-rate infusion volume from the desired volume or rate only, never computing the mg/kg ceiling first.
The arithmetic feels finished once a volume appears, so the toxic-dose ceiling - the step that actually prevents harm - gets skipped under time pressure.
What to do instead
Always work in this order: mg/kg maximum → total mg allowed for that patient's weight → divide by concentration to get mL. For local anesthetics, add up every agent and site used, and remember that bupivacaine's ceiling is far lower than lidocaine's.
After gowning and gloving, touches non-sterile items - anesthesia dials, light handles, the mayo stand edge, a pen - and then continues to handle instruments as though still sterile.
Sterility is treated as a state the candidate is 'in' rather than a boundary that is crossed, and novices have not rehearsed what is and is not inside the field.
What to do instead
Before gloving, verbally identify the sterile boundary out loud and move anything you might need (dials, leads, clipboard) to where a non-sterile runner can reach it. If contact with a questionable surface happens, say so immediately, discard the glove or instrument, and replace it.
Judges periodontal health from the visible crown only - answering that a tooth with clean enamel needs no further treatment - and skips probing and subgingival scaling.
Dental disease is most often hidden below the gingival margin, and photographs and clean crowns create a strong visual bias toward 'normal'.
What to do instead
Treat probing of six sites per tooth and subgingival scaling as non-negotiable parts of every oral exam, and remember that they require general anesthesia with an endotracheal tube and a throat pack - not just sedation or a calm patient.
Submits samples in the wrong tube - a CBC in a plain red-top, a chemistry in EDTA, or a citrate tube filled well short of the fill line - because the tube colour was chosen by habit.
Tube additives are memorized as a list without a mental model of what each additive does, and underfilled citrate tubes look 'close enough'.
What to do instead
Learn tubes by function, not colour: EDTA chelates calcium for cell counts and smears, citrate binds calcium reversibly for coagulation and must be filled to the line, serum tubes have no additive. Whenever a result looks impossible (clotted CBC, wildly prolonged PT), question the tube before questioning the patient.
Triages patients in arrival order, working up a stable vomiting dog while an open-mouth-breathing cat waits in the lobby.
Arrival order is the default queue in every other setting, and nervous candidates gravitate toward the case they feel they can help with.
What to do instead
Perform a formal triage sweep at the door on every arrival - airway, breathing, circulation, perfusion, mentation, then pain - and assign a category before anyone is roomed. Re-triage waiting patients at fixed intervals, because the quiet cat in the corner is the one most likely to decompensate.
Declares a postoperative or injured patient comfortable because it is quiet, recumbent, and eating, and does not perform a structured pain assessment.
Candidates expect pain to look like loud vocalization and thrashing; cats and stoic dogs instead hide, freeze, or stop grooming, so absence of noise is misread as absence of pain.
What to do instead
Use a validated composite pain scale at fixed intervals (e.g., Glasgow CMPS-SF for dogs, Feline Grimace Scale for cats) and record the score. Treat anticipated pain preemptively and with multimodal drugs rather than waiting for obvious signs, and reassess after every intervention.
Gives the client a diagnosis, prognosis, or a cost commitment over the phone or in the exam room before the veterinarian has seen the patient.
Clients ask direct questions and technicians want to be helpful, so the scope-of-practice line gets crossed in the moment.
What to do instead
Rehearse a small set of boundary phrases: 'I can share what we typically see, but Dr. ___ will need to examine your pet before we commit to a diagnosis or a plan.' Keep the estimate as a range and state clearly what is included and what triggers additional charges.
Restrains a dyspneic or cardiovascularly unstable patient in dorsal or tight lateral recumbency to draw blood from the jugular, or wrestles a fractious cat instead of stopping.
The jugular is the highest-yield vein and restraint technique is taught as a routine, so patient status is not factored into site selection.
What to do instead
Match the vein and the restraint to the patient's stability: minimal handling, oxygen and sedation first for respiratory distress, cephalic or marginal ear veins for hypotensive or collapsing patients, and never full dorsal recumbency in a dyspneic animal. If restraint escalates, stop and reassess rather than persist.
Draws up insulin in whatever syringe is at hand without confirming the U-40 versus U-100 scale matches the bottle.
The syringe looks like the right size, and the mismatch is invisible because the volume markings are not interchangeable between scales.
What to do instead
Read the concentration on the bottle and the scale on the syringe barrel as a paired check before drawing, and use a U-40 syringe only with U-40 insulin. Where available, prefer a pen or an insulin-specific syringe, and have a second person verify the pair on every dispense.