Questions to Ask a Cardiology Expert Witness at Deposition (2026 Guide)

By John Mahoney · Updated 2026-09-01 · 18 questions in 4 concession chains

You are about to cross-examine someone with two decades of training you don't have, on their home turf, about the thing they do every day. That asymmetry is the defining problem of medical-expert depositions — and it gets worse in multi-defendant malpractice cases, where two to four different specialties can be in play in a single case and you have to be conversant in all of them by deposition day.

Cardiology experts typically opine on missed myocardial infarction, anticoagulation decisions in atrial fibrillation, device and procedure complications, and whether earlier intervention would have changed the outcome. They are comfortable witnesses — cardiologists testify often — so the funnel has to be built from concessions no credible cardiologist can refuse.

The answer to the asymmetry is not to learn cardiology — it is structure. A concession funnel asks the expert to agree, one fact at a time, to propositions so orthodox that refusing them costs more credibility than granting them. The questions below are a generic-case-safe starting bank, organized into the four chains that structure works through.

How to use these questions

Every question below follows three rules of expert cross-examination: it is leading (it states a fact and asks for agreement), it contains one fact (no compounds — a compound question lets the witness answer the easy half), and it belongs to a concession chain (each answer narrows the room the next answer can live in). Ask them in order. When you get the concession, stop — do not ask the "why" question that lets the expert explain it away.

Chain 1 — Qualifications, retention & scope

Goal: establish on the record that this is a paid, retained witness who never touched the patient, and fix the boundaries of what they actually practice.

Doctor, you were retained by opposing counsel in this case, correct?
You are being compensated for your time reviewing this case and for your testimony today, correct?
You never examined or treated the patient in this case, correct?
Everything you know about this case comes from the materials counsel selected and sent to you, correct?
Cardiology includes subspecialties — interventional cardiology, electrophysiology, advanced imaging — and you do not personally practice all of them, correct?

Chain 2 — Bases-of-opinion lockdown

Goal: freeze the universe. After this chain, any new document, new basis, or new opinion at trial is impeachment material.

You have now told us every document and material you reviewed in forming your opinions, correct?
You are not relying on anything outside that file for the opinions you will give in this case, correct?
You have told us every opinion you intend to offer at trial, correct?
You agree that an opinion you cannot state to a reasonable degree of medical probability is speculation, correct?

Chain 3 — Substantive concessions: chest pain, ischemia, and anticoagulation

These are the concessions that frame nearly every cardiology case — each one is a proposition a credible cardiology expert has to grant, and together they box in the defense themes before you ever argue the specific facts.

You agree chest pain can be a symptom of a life-threatening cardiac event, correct?
An electrocardiogram is a standard part of evaluating a patient with suspected cardiac chest pain, correct?
Serial troponin testing exists because a single early blood draw can miss an evolving heart attack, correct?
In an evolving myocardial infarction, time to treatment matters, correct?
Atrial fibrillation increases the risk of stroke, correct?
The ECG tracings in this case are objective data — they are what they are, correct?

Chain 4 — Closing the doors

Goal: end with the record sealed. These questions convert silence into a commitment that nothing new is coming at trial.

You are not offering any opinions in this case beyond the ones we have discussed today, correct?
You have not held back any opinion or criticism that you intend to offer at trial, correct?
You are not offering any opinion about the emergency-department or nursing care in this case, correct?

These are the generic questions. Your case isn't generic.

The MedLegal AI Examination Builder generates a complete, case-specific concession-funnel roadmap for deposing a cardiology expert — built from your theory of the case, aware of which side you're on and what kind of witness you're facing, with stop markers, if-they-resist branches, and the doors you should not open. Three free cases, no credit card.

Build my examination → Cardiology depo trainer

Where lawyers get burned deposing cardiology experts

Letting a general cardiologist defend subspecialty care (or vice versa)

Cardiology is fragmented: interventional, electrophysiology, imaging, heart failure. An expert will happily opine across all of it unless you pin down — early — what they actually do in practice. Once they concede they do not perform the procedure at issue, every opinion about how it should have been performed is built on reading, not doing.

Accepting the "atypical presentation" frame

The defense theme in missed-MI cases is that the presentation was atypical. Lawyers get burned arguing typicality head-on. The stronger funnel concedes atypical presentations exist — and then locks the expert into agreeing that atypical presentations are precisely why the workup exists in the first place.

Fighting risk-stratification tools instead of using them

If the expert dismisses risk scores as "just tools," do not argue. Get the concession that the tool is widely used, that it exists to standardize judgment, and that the defendant either used it or did not. The dismissiveness then becomes your closing argument, not your deposition fight.

FAQ

What questions should I ask a cardiology expert witness at deposition?

Work in four concession chains: (1) qualifications, retention, and scope — establish the expert was retained, is compensated, never treated the patient, and what they do and do not practice; (2) bases-of-opinion lockdown — pin every document reviewed and every opinion they intend to offer; (3) the cardiology-specific substantive chain — well-established propositions such as "You agree chest pain can be a symptom of a life-threatening cardiac event"; and (4) closing the doors — confirm on the record that no undisclosed opinions remain. Every question should be leading, contain one fact, and build on the prior answer.

How do I cross-examine a medical expert when I never went to medical school?

You don't out-doctor the doctor — you build concession chains from propositions so well-established that a credible cardiology expert cannot refuse them, then apply those concessions to the facts in the chart. The expert's medical training becomes your asset: the more orthodox the proposition, the more it costs them to fight it. The asymmetry problem is real — especially in multi-defendant cases with two to four specialties — which is why the questions are organized as funnels rather than as debates.

What are the biggest traps when deposing a cardiology expert witness?

The classic traps are letting the expert opine across cardiology subspecialties they do not practice, arguing against the "atypical presentation" defense head-on instead of turning it into a concession about why the workup exists, and fighting risk-stratification tools instead of locking in that they exist to standardize judgment.

Related resources

Examination Builder — a case-specific concession-funnel roadmap from your theory of the case
Cardiology deposition trainer — the other side of the table: how cardiology witnesses are prepped against these questions
All specialties — deposition question guides
Are you a cardiology physician? Join the MedLegal AI expert network

This page is informational only and is not legal advice. Question banks are generic-case-safe starting points — adapt every question to the facts, the jurisdiction, and your theory of the case before using it in a deposition.