Quick answer
How should I present a new atrial fibrillation case on rounds?
State her age, the palpitations and dizziness, and her hypertension, then confirm the irregular rhythm on exam and ECG before naming new-onset atrial fibrillation. Include the normal thyroid result to exclude a reversible cause. End by framing stroke-risk assessment and anticoagulation as the priority, not just symptom control.
Before you speak
Define the moment and the information you actually have
An outpatient clinic presentation after the ECG and thyroid function results return.
A supervising physician deciding on rate control and anticoagulation.
History, medications, a brief cardiac exam, a 12-lead ECG, and thyroid function. A formal CHA2DS2-VASc score component list and echocardiogram are not itemized.
About 70 seconds
Fictional training case: The presentation is locked to the simulated patient JSON. It names important unknowns instead of inventing an examination, vital signs, allergies, or tests.
Complete spoken example
First, read it once without stopping
The paragraph breaks show the clinical shape. In a real presentation, pause briefly between ideas rather than announcing the headings.
Mrs. Son is a 64-year-old woman with hypertension who presents with two days of palpitations and mild dizziness, found to have an irregular pulse.
She noticed the fluttering and lightheadedness suddenly two days ago and denies chest pain or shortness of breath. She initially attributed it to stress or too much coffee but is now worried about stroke risk.
Her history includes hypertension, treated with amlodipine, and she is retired and does not smoke.
Her pulse is irregularly irregular, with blood pressure and oxygen saturation otherwise unremarkable. Her 12-lead ECG confirms atrial fibrillation with no discrete P waves and a ventricular rate of 118. Thyroid-stimulating hormone is 1.8, which is normal.
My diagnosis is new-onset atrial fibrillation with a ventricular rate that's not quite controlled, at 118, most likely related to her hypertension rather than thyrotoxicosis, which her normal TSH argues against. The main risk here is stroke, not the palpitations themselves.
I would calculate her CHA2DS2-VASc score to guide anticoagulation, since her hypertension already contributes a point and her age will add another once she turns 65, and consider rate control if her heart rate remains elevated. I would refer her to cardiology for further rhythm assessment and long-term management.
Build the presentation
Give every sentence one job
A presentation is a compressed clinical argument, not a chart read aloud. These six moves keep the facts connected to your reasoning.
Opening one-liner
Frame this around stroke risk, not just palpitations
“Mrs. Son is a 64-year-old woman with hypertension who presents with two days of palpitations and mild dizziness, found to have an irregular pulse.”
Why it belongs: Naming hypertension alongside the irregular pulse in the opening sentence signals that stroke-risk assessment, not just symptom relief, is the central issue.
This is a 64-year-old with a fluttery heartbeat.
Mrs. Son has two days of palpitations and mild dizziness, found to have an irregular pulse.
Why: Naming the irregular pulse, not just the sensation of fluttering, points toward the diagnosis before the ECG is even mentioned.
History of present illness
Give the timing and associated symptoms
“She noticed the fluttering and lightheadedness suddenly two days ago and denies chest pain or shortness of breath. She initially attributed it to stress or too much coffee but is now worried about stroke risk.”
Why it belongs: Denying chest pain and shortness of breath helps exclude an acute coronary or heart-failure component, and her own stroke concern is a natural bridge into the assessment.
She's had a fluttery feeling for a couple of days.
She noticed sudden palpitations and lightheadedness two days ago, without chest pain or shortness of breath.
Why: Stating the specific negatives is as informative as the positive symptoms.
Relevant background
Give risk factors relevant to rate and stroke-risk decisions
“Her history includes hypertension, treated with amlodipine, and she is retired and does not smoke.”
Why it belongs: Hypertension is both a contributor to atrial fibrillation and a component of stroke-risk scoring, making it the single most relevant background detail here.
She has high blood pressure and takes a pill for it.
She has hypertension, treated with amlodipine, which is relevant both to her arrhythmia and to her stroke-risk score.
Why: Connecting the history to its clinical relevance is more useful than listing it as a passing detail.
Objective data
Confirm the rhythm on exam, ECG, and thyroid testing
“Her pulse is irregularly irregular, with blood pressure and oxygen saturation otherwise unremarkable. Her 12-lead ECG confirms atrial fibrillation with no discrete P waves and a ventricular rate of 118. Thyroid-stimulating hormone is 1.8, which is normal.”
Why it belongs: The ECG confirms the rhythm and its rate, and the normal thyroid result excludes thyrotoxicosis as a reversible cause, which changes how confidently you can call this idiopathic new-onset atrial fibrillation.
Her ECG showed AFib and her thyroid was normal.
Her ECG confirms atrial fibrillation with a ventricular rate of 118, and her TSH of 1.8 is normal, excluding thyrotoxicosis.
Why: Naming the exact rate and the specific excluded cause is more useful than a general summary.
Assessment
Commit to the diagnosis and frame the real priority
“My diagnosis is new-onset atrial fibrillation with a ventricular rate that's not quite controlled, at 118, most likely related to her hypertension rather than thyrotoxicosis, which her normal TSH argues against. The main risk here is stroke, not the palpitations themselves.”
Why it belongs: Explicitly stating that stroke risk is the central concern reframes the case away from symptom management alone, which is a common error in how this diagnosis gets presented.
She has new AFib, we should treat her rate.
She has new-onset atrial fibrillation; the main priority is assessing stroke risk, not just controlling the rate.
Why: Naming stroke risk as the priority reflects why this diagnosis matters clinically.
Plan
Frame anticoagulation as the priority alongside rate control
“I would calculate her CHA2DS2-VASc score to guide anticoagulation, since her hypertension already contributes a point and her age will add another once she turns 65, and consider rate control if her heart rate remains elevated. I would refer her to cardiology for further rhythm assessment and long-term management.”
Why it belongs: Leading with the stroke-risk score rather than a rate-control medication reflects the correct clinical priority for a new-onset case like this.
I'll start a beta-blocker and see how she does.
I would calculate her stroke-risk score to guide anticoagulation and consider rate control alongside it.
Why: Naming the stroke-risk assessment first reflects the actual clinical priority in new atrial fibrillation.
Do not fill the blanks
Say what has not yet been established
Real presentations often happen before the chart is complete. A brief, explicit limitation is safer and more credible than a polished invention.
Complete CHA2DS2-VASc components
Say: “A complete stroke-risk score is not yet calculated in this simulation, and I would confirm each component, including prior stroke or vascular disease history, before finalizing it.”
Anticoagulation decisions should rest on the complete score, not just her hypertension alone.
Echocardiogram
Say: “An echocardiogram is not part of this simulation and would help assess for structural heart disease or a thrombus source.”
It is not required to start anticoagulation but adds useful information for long-term management.
Clinical compression
What leads, what stays, and what can wait?
| Source detail | Decision | Reason |
|---|---|---|
| Sudden palpitations and lightheadedness two days ago | Lead | This is the acute complaint and time course that brought her in. |
| Denies chest pain or shortness of breath | Include | These negatives help exclude an acute coronary or heart-failure component. |
| Retired, non-smoker | Compress | Brief social context that does not change the immediate assessment. |
| Irregularly irregular pulse confirmed by ECG at a rate of 118 | Lead | This is the objective evidence that confirms the diagnosis and its rate. |
| Normal thyroid-stimulating hormone | Include | It excludes a common reversible cause of new atrial fibrillation. |
After the presentation
Likely attending questions
Answer the question first, then give the evidence. If the source case does not contain the answer, say what you would verify.
Why focus on stroke risk instead of just controlling her rate?
Atrial fibrillation's main long-term danger is thromboembolic stroke from clot formation in the fibrillating atria, so calculating a stroke-risk score to guide anticoagulation is a higher priority than rate control alone in most new-onset presentations.
Why check thyroid function in a new atrial fibrillation case?
Thyrotoxicosis is a reversible and important cause of new atrial fibrillation, so checking TSH is a standard part of the initial workup; her normal result of 1.8 makes this less likely here.
What else do you need before starting anticoagulation?
I would confirm the remaining components of her stroke-risk score and assess bleeding risk before finalizing anticoagulation, since neither is fully documented in this simulation.
Self-check
A 30-second check before you present
- Name the irregular pulse and hypertension together in the opening sentence.
- State the exact ventricular rate from the ECG.
- Report the thyroid result to address a reversible cause.
- Frame stroke risk, not palpitations, as the central clinical concern.
- State that a stroke-risk score is being calculated to guide anticoagulation.
- Mention rate control as a secondary consideration, not the primary one.
- State what components of the risk score still need confirming.
- Refer to cardiology for further rhythm assessment.
Common presentation problems
Repair the habits that make a case hard to follow
Treating new atrial fibrillation as mainly a rate-control problem
Repair: State that stroke-risk assessment and anticoagulation are the primary priority.
Skipping thyroid function in the workup
Repair: State the TSH result explicitly, since thyrotoxicosis is a reversible and important cause.
Naming a beta-blocker without mentioning the stroke-risk score
Repair: State that a stroke-risk score is being calculated before or alongside any rate-control decision.
Assuming anticoagulation can start without a complete risk assessment
Repair: State which components of the score and bleeding-risk assessment are still needed.
Frequently asked questions
Oral case presentation questions
Do I need to state the exact CHA2DS2-VASc score if it's not fully documented?
State what you know and what is still missing rather than guessing a final number; naming the process is more accurate than inventing a completed score.
Should I mention rhythm control options like cardioversion?
You can mention that cardiology will assess rhythm-control options, but detailed timing and eligibility depend on further workup not yet available in this simulation.
How long should this presentation be?
This worked example targets about 70 seconds. An outpatient new-diagnosis presentation like this is usually shorter than an unstable emergency case.
Practice out loud
Turn the patient encounter into your own presentation
Bedside English lets you interview an AI patient, then practice presenting the collected case to an AI attending and respond to follow-up questions.
Editorial record
Sources, provenance, and review boundary
The patient facts come from simulated case cardio_025. Clinical framing and presentation design were checked against the sources below. This page teaches clinical communication and reasoning; it is not medical advice or a local protocol.
- 2023 ACC/AHA/ACCP/HRS Guideline for the Diagnosis and Management of Atrial FibrillationAmerican Heart Association · accessed 2026-09-03
- Feedback on Oral Presentations during RoundsStanford Medicine · accessed 2026-09-03
- Clinical Teaching Tools: OMP and SNAPPSUCSF Medical Education · accessed 2026-09-03
Published: · Last source, safety, and language review: