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Beta-Blockers: Uses, Side Effects, and Precautions
Medications Beta-Blockers: Uses, Side Effects, and Precautions Beta-blockers calm the heart by blocking adrenaline, and they treat far more than blood pressure. Here is what yours is doing, the side effects worth knowing about including vivid dreams, and why you must never stop one suddenly.
Prof. Peter Barlis · Jul 28, 2026
Rethinking Beta-blockers Post-Heart Attack
Medications Rethinking Beta-blockers Post-Heart Attack A large study has raised important questions about whether patients with normal heart function after a heart attack need to stay on beta blockers indefinitely.
Prof. Peter Barlis · Mar 14, 2024
Calcium Channel Blockers: What Amlodipine, Verapamil and the Rest Are Actually Doing
Medications Calcium Channel Blockers: What Amlodipine, Verapamil and the Rest Are Actually Doing Amlodipine, verapamil, diltiazem: if you have been prescribed a calcium channel blocker, here is what it does, why it was chosen for you, and the side effects and grapefruit interaction every patient on one should know about.
Kathy Marinias RN · Jun 11, 2026
Ventricular Ectopic Beats: What They Are and What They Mean
Conditions Ventricular Ectopic Beats: What They Are and What They Mean Ventricular ectopic beats are one of the most common causes of palpitations, and one of the most reassuring findings in cardiology. Here is what they are and what they mean.
Prof. Peter Barlis · Jun 29, 2025
Understanding Palpitations: A Cardiologist’s Approach
Symptoms Understanding Palpitations: A Cardiologist’s Approach Palpitations are one of the most common reasons people see a cardiologist, and one of the most reassuring. Here is what causes them and when to seek help.
Prof. Peter Barlis · Apr 29, 2025
Second-Degree Heart Block: What the Finding Means
Conditions Second-Degree Heart Block: What the Finding Means Second-degree AV block means most signals reach the lower chambers of the heart and the occasional one does not. Some causes are entirely benign. Here is what the finding describes and what usually happens next.
Prof. Peter Barlis · Aug 24, 2026
Complete Heart Block: What It Means and How It’s Treated
Conditions Complete Heart Block: What It Means and How It’s Treated In complete heart block the top and bottom of the heart stop communicating, and a backup rhythm takes over. It is serious, and it is also among the most fixable problems in cardiology.
Prof. Peter Barlis · Aug 5, 2026
When Blood Pressure Won’t Come Down: What Happens Next
Conditions When Blood Pressure Won’t Come Down: What Happens Next Blood pressure that stays high despite three or more medications has a name, and in most cases an explanation. What clinicians check first, why spironolactone is usually the fourth medicine added, and how narrow the role of renal denervation really is.
Prof. Peter Barlis · Jul 29, 2026
The Hair Loss Question
Conditions The Hair Loss Question Hair clinics and GPs increasingly send people to check with their heart doctor before starting treatment. There is a good reason for that, and it runs in both directions.
Prof. Peter Barlis · Jul 29, 2026
Demystifying Heart Failure: HFrEF, HFpEF and HFimpEF Explained
Conditions Demystifying Heart Failure: HFrEF, HFpEF and HFimpEF Explained Being told you have heart failure with reduced or preserved ejection fraction can be confusing. Here is what ejection fraction means and why the distinction matters for treatment.
Prof. Peter Barlis · Jul 9, 2026
The Stress Echocardiogram: What to Expect
Tests & Procedures The Stress Echocardiogram: What to Expect A stress echocardiogram combines an ultrasound of the heart with an exercise challenge, revealing how the heart performs under pressure, not just at rest.
A/Prof. Nagesh Anavekar · Jun 29, 2026
Understanding Dizziness: A Cardiologist’s Guide
Symptoms Understanding Dizziness: A Cardiologist’s Guide Dizziness means something different to almost everyone who uses the word, and that description is what points to the cause. A cardiologist explains the four types, what causes each, and when your heart is involved.
Prof. Peter Barlis · Jun 2, 2026

Beta-Blockers: Uses, Side Effects, and Precautions

Beta-blockers

Beta-blockers calm the heart by blocking adrenaline, and they treat far more than blood pressure. Here is what yours is doing, the side effects worth knowing about including vivid dreams, and why you must never stop one suddenly.

Second-Degree Heart Block: What the Finding Means

second degree av heart block

Second-degree AV block means most signals reach the lower chambers of the heart and the occasional one does not. Some causes are entirely benign. Here is what the finding describes and what usually happens next.

When Blood Pressure Won’t Come Down: What Happens Next

Managing resistant hypertension — blood pressure monitoring and medication options explained by Prof. Peter Barlis

Blood pressure that stays high despite three or more medications has a name, and in most cases an explanation. What clinicians check first, why spironolactone is usually the fourth medicine added, and how narrow the role of renal denervation really is.

The Hair Loss Question

Hair loss and heart medicines

Hair clinics and GPs increasingly send people to check with their heart doctor before starting treatment. There is a good reason for that, and it runs in both directions.