|Articles|July 7, 2021

Cardiology Case Report: Near Syncope After a Jab

Our latest cardiology case report from Brady Pregerson, MD, features a man in his 20s presenting to the emergency department complaining of body aches, chest discomfort, and light-headedness. Can you determine the correct diagnosis?

History:

A man in his 20’s comes to the ED for body aches including chest discomfort and feeling light-headed. Symptoms started about 3 hours after his second COVID vaccine and are non-progressive at this point. He was told he needs a doctor’s note to return to work. He denies syncope, palpitations, SOB, fever, cough or other complaints.

Exam:

Vital signs are normal. He is not orthostatic. Exam is normal.

An EKG is done:

What is the most likely cause of the EKG findings in this patient?

Join thousands of clinicians staying current on new therapies, trial data, and expert insights—subscribe to HCPLive today.

Latest CME

In-Person Event

Revolutionizing Atopic Dermatitis (RAD) Conference 2026

June 17-19, 2026

Audio

PER Podcast™: Maximizing the Multidisciplinary Care Outcomes of Patients with Amyotrophic Lateral Sclerosis (ALS)

Richard Bedlack, MD, PhD

Audio

PER Podcast™: Best Strategies for Approaching the Diagnosis of Amyotrophic Lateral Sclerosis (ALS)

Terry Heiman-Patterson, MD

Multimedia

Expert Illustrations & Commentaries™: Visualizing the Role of the Complement Pathway in Paroxysmal Nocturnal Hemoglobinuria

Caroline Piatek, MD; Ilene Weitz, MD

Cardiology Case Report: Near Syncope After a Jab

Related Content

The HCPFive: Top News for Healthcare Providers from the Week of 05/31

VESALIUS-CV: Evolocumab Reduces Cardiovascular Events in Patients With High-Risk Diabetes

Moving the Needle in Medicine: Mentorship, Medicine, and the Making of an Innovator, With Jim Januzzi, MD

10 Cardiology Headlines You Missed in May 2026

Lorundrostat Lowers BP, Albuminuria in Phase 3 CKD Hypertension Analysis

Latest CME

Revolutionizing Atopic Dermatitis (RAD) Conference 2026

PER Podcast™: Maximizing the Multidisciplinary Care Outcomes of Patients with Amyotrophic Lateral Sclerosis (ALS)

PER Podcast™: Best Strategies for Approaching the Diagnosis of Amyotrophic Lateral Sclerosis (ALS)

Expert Illustrations & Commentaries™: Visualizing the Role of the Complement Pathway in Paroxysmal Nocturnal Hemoglobinuria

(COPE Credit) Navigating Pharmacological Presbyopia Treatment for Enhanced Patient Care

Addressing Healthcare Inequities: Detecting and Managing the Uncommon – Hemophilia in Women

Addressing Healthcare Inequities: Detecting and Managing the Uncommon – Hemophilia in Women

Understanding Topical Steroid Withdrawal (TSW) in Patients With Atopic Dermatitis (AD)

(CME Credit) Navigating Pharmacological Presbyopia Treatment for Enhanced Patient Care

PER Postgame™: Updates from ANNA in the Management of IgA Nephropathy

Neurotrophic Keratitis Insights: An Interactive Corneal Sensitivity Testing Workshop

SimulatEd™ in Hypercortisolism and Type 2 Diabetes: Identifying Patients with Hypercortisolism

(COPE Track) Small Mites, Big Impact: Revolutionizing Demodex Blepharitis Care

Clinical Consultations™: Providing Holistic Care for Complex Cases of Psoriasis with Cardiovascular Comorbidities

Clinical Consultations™: Providing Holistic Care for Complex Cases of Psoriasis with Cardiovascular Comorbidities

(CME Track) Small Mites, Big Impact: Revolutionizing Demodex Blepharitis Care

Cases and Conversations™: Sorting Through the Expanding Treatment Options for Patients with Relapsed/Refractory Multiple Myeloma

Cases & Conversations™: Transforming AML Care—Precision Strategies, Evolving Therapies, and Clinical Insights

Medical Crossfire®: Improving Patient Outcomes in Myeloproliferative Neoplasms With Novel Therapeutic Approaches

Southern California Psychiatry Conference

Burst CME: Managing Fluid Overload in Patients with Chronic Kidney Disease (Part 1)

Looking Beneath the Surface: Latest Updates in Identifying and Managing Hypercortisolism in Patients with Type 2 Diabetes

Navigating Safety Data with Janus Kinase (JAK) Inhibitors in Atopic Dermatitis (AD) Management

Rapid Reviews in Retina™: Emerging Updates from Spring 2025—Addressing the Wealth of New Data in Treatments for Neovascular Retinal Disease

Interventional Dry Eye: A Stepwise Treatment & Management Approach

Assessing the Evidence for OX40-OX40L Axis Inhibition for the Treatment of Atopic Dermatitis

Burst CME: Managing Fluid Overload in Patients with Chronic Kidney Disease (Part 2)

Patient, Provider, and Caregiver Connection: Turning a New Leaf in Acute Pain Management – How Recent Advancements Impact the Treatment Paradigm

(CME Track) Collaborating Across the Continuum™: Best Practices in Patient-Centric Team Management of XLRP

Burst CME™: Optimizing Care for Patients with Psoriasis – Incorporating a Buy-and-Bill Model for Biologic Agents into Dermatological Practice

(CME Track) The Evolution of MacTel Management: Integrating Neuroprotective Therapies Into Clinical Practice

Live Expert Illustrations & Commentary™: Visualizing Novel Therapeutic Targets for Patients with Major Depressive Disorder

(CME Track) Rapid Reviews in Retina™: Emerging Updates from Summer 2025—Addressing the Wealth of New Data in Treatments for Neovascular Retinal Disease

(CME Track) A Forward Look at Anti-VEGF Therapies: A Paradigm Shift in Neovascular Retinal Disease Management

Cases and Conversations™: Biologic Matchmaking in Psoriasis – Finding the Right Therapy for the Right Patient

Collaborating Across the Continuum™: The Pediatrician’s Vital Role in Multidisciplinary Management of Pediatric PAH

Collaborating Across the Continuum™: The Pediatrician’s Vital Role in Multidisciplinary Management of Pediatric PAH

Collaborating Across the Continuum™: The Pediatrician’s Vital Role in Multidisciplinary Management of Pediatric PAH

Patient, Provider, and Caregiver Connection™: Addressing Patient Challenges With Holistic Approaches to Vitiligo Management

(CME Track) Community Collaborative Connections™: Optimizing the Collaborative Care of Neovascular Retinal Disease in a New Age of Treatment

(CME Track) SoCal Psych 2025: Overcoming Barriers to Long-Acting Injectable Agents in Schizophrenia

Cases and Conversations™: Mineralocorticoid Receptor Antagonists in Patients With HF—Augmenting Current Guidelines with Emerging Evidence

Hidradenitis Suppurativa: Diving Deeper Into Disease Pathogenesis, Severity Assessment, and Holistic Management Approaches

Burst CME CGM: Continuous Glucose Monitoring Considerations – Maximizing Quality of Life for Patients

Progress in Hyperlipidemia Management to Reduce ASCVD Risk: An Illustrated Update

Navigating Advances in Neovascular Retinal Disease: Translating Evidence to Practice in AMD, DME, and RVO

(CME Track) Beyond the Collarette: Empowering Patients in the Management of Demodex Blepharitis

(COPE Track) Beyond the Collarette: Empowering Patients in the Management of Demodex Blepharitis

IgAN Case Files: Real Conversations, Evolving Evidence

Expert Illustrations & Commentaries™: Visualizing the Role of Dystrophin Dysregulation as a Therapeutic Target in Duchenne Muscular Dystrophy and MD STARnet

Shining a Light on an Ultra-Rare Disease – A Closer Look at Thymidine Kinase 2 Deficiency (TK2d)

Shining a Light on an Ultra-Rare Disease – A Closer Look at Thymidine Kinase 2 Deficiency (TK2d)

Identifying and Treating Generalized Myasthenia Gravis in the Modern Era

Addressing Unmet Needs for Patients With Spinal Muscular Atrophy—Understanding Patient Challenges and Management Approaches

Rewiring Recovery: Evidence-Based Approaches to Managing Chronic Inflammatory Demyelinating Polyneuropathy

Navigating Ocular Toxicities: A Multidisciplinary Roadmap for Managing Adverse Events in Targeted Cancer Therapy

(CME Track) Antibody–Drug Conjugates in Oncology: The Essentials of AE Management for Better Patient Outcomes

Clinical Consultations™: Tailoring Treatment for Cystic Fibrosis (CF) Across Life Stages and Evolving Health Needs

Clinical Consultations™: Tailoring Treatment for Cystic Fibrosis (CF) Across Life Stages and Evolving Health Needs

Clinical Consultations™: Tailoring Treatment for Cystic Fibrosis (CF) Across Life Stages and Evolving Health Needs

SimulatEd™: Partnering for Precision – A Framework for Personalized Care Planning in Acute Lymphoblastic Leukemia

Putting the Patient First in Acute Pain Management: The PA’s Guide to Incorporating Cutting-Edge Science Into Their Treatment Strategies

Putting the Patient First in Acute Pain Management: The PA’s Guide to Incorporating Cutting-Edge Science Into Their Treatment Strategies

Expert Illustrations & Commentaries™: Visualizing the Role of B Cells as Therapeutic Targets for Generalized Myasthenia Gravis

Rapid Reviews in Retina™: Emerging Updates from Fall 2025—Addressing the Wealth of New Data in Treatments for Neovascular Retinal Disease

Targeting the Cortisol Cascade: Diagnosis and Treatment Strategies in Patients with Hypertension

Targeting the Cortisol Cascade: Diagnosis and Treatment Strategies in Patients with Hypertension

Trending on HCPLive

TRIUMPH-1: Retatrutide Substantially Lowers Weight, BMI in Patients With Obesity or Overweight

Survodutide Shows Fat Mass Loss, Liver Fat Reductions in Patients With Obesity Without T2D

What Comes Next for Berobenatide? VESPER-3 and Phase 3 Expectations, With John Buse, MD, PhD

Orforglipron Delivers Significant Weight Loss At Every Stage of Menopause in Phase 3 ATTAIN Trials