The pre-procedure packet for a catheter ablation goes home in a folder with an appointment card and a list of instructions. Somewhere on that list is a line about medications. By nine o'clock that night, the patient is standing at the kitchen counter holding a pill organizer and a bottle of anticoagulant, trying to work out whether the instruction about holding medications includes the blood thinner. The office closed at five. The ablation is in six days. The pill is due now.
It is one of the most common after-hours messages a cardiac electrophysiology practice receives, and it usually arrives worded almost exactly like this: “Do I keep taking my blood thinner before and after my ablation?” The physician-approved answer PrepQ delivers, instantly, by text, reads:
“Blood thinners are very important and should never be stopped on your own. Whether to keep taking yours before and after an ablation is individualized, and your EP doctor decides the plan that is safest for you. Many people stay on a blood thinner for a period of time around an ablation, so it's best to follow your team's guidance.”
Notice what that answer refuses to do. It does not tell the patient to hold the dose, and it does not tell them to take it. Anticoagulation around an ablation is a decision that belongs to the electrophysiologist who knows the patient's rhythm, stroke risk, and full medication list — and an answer that guessed either way would be worse than silence. What the answer does do is settle the one thing the patient can safely act on tonight: don't stop it on your own, and here is who decides.
How the answer gets to the patient
Every answer in the library is written by physicians, then reviewed and approved by the subscribing practice's own doctors before a single patient sees it. A practice that anticoagulates uninterrupted through ablation can say so in its own words; a practice with a different protocol edits the answer to match. Nothing goes live over a practice's name that the practice's clinicians have not signed off on.
Delivery is by text message and by voice call, 24 hours a day, every day of the year, in English and Spanish. The patient at the kitchen counter does not have to decide whether their question is worth paging the answering service. They text a number and get a calm, accurate answer in seconds.
Urgent symptoms are not answered by AI at all. A message describing chest pain, fainting, sudden weakness or slurred speech, or heavy bleeding is escalated out of the education path and routed to the practice's office line or, for a true emergency, to 911. That routing is deliberate: the system is built to handle the pre-procedure question, not to triage a stroke. PrepQ is built HIPAA-eligible, and a Business Associate Agreement is available to subscribing practices.
Why this lands harder in electrophysiology
Cardiology's procedural schedule runs on medication compliance in a way few other specialties do. A patient who stops a direct oral anticoagulant on their own three days before a pulmonary vein isolation may need the case moved. A patient who takes a dose they were told to hold before a diagnostic catheterization may need the case moved. A patient uncertain about whether they need a TEE first, or whether their diabetes medication counts among the ones to adjust, often resolves the uncertainty by guessing — and the guess surfaces on the morning of the procedure, in pre-op, with a full lab day already booked behind it.
Answering the question the night it is asked keeps the schedule intact and keeps nursing staff off the phone re-explaining the same medication instruction to every patient on the list. The same library covers what comes after: soreness at the groin or wrist access site, how long to lie flat, whether the rhythm medicine can ever come off, and the questions that follow if the patient later needs a cardioversion or a pacemaker. It is the same explanation the practice already gives — available at the hour the patient is actually asking for it.
PrepQ's cardiology library was built by physicians and is governed by two founding clinicians, Keith Schmidt MD and Ryan Kuta DO, with each subscribing practice's own doctors holding final approval over what their patients receive.