Cardiac Krock

TBD

03/16/2026

As a cardiologist, here’s what I personally wouldn’t ignore:

➡️ Shortness of breath in my 40s.
That’s not something I’d just blame on aging or being out of shape.

➡️ Thinking “no chest pain” means no heart problem.
Many serious heart issues don’t cause classic chest pain.

➡️ Waiting for a heart attack to take action.
Heart disease develops over time. Prevention matters.

➡️ Skipping yearly bloodwork.
You can’t manage what you don’t measure.

Most heart problems give warning signs.
The key is paying attention early, not late.

Take this as your sign - if you are 40+ and have any heart-related risk factors, start seeing a cardiologist now.

Information and prevention is key.

Dr. Krock has offices in McKinney and Frisco, Tx. Visit www.theheartsmartgroup.com for more info.

03/13/2026

What’s the difference between heart rhythm and heart rate?

Heart rhythm describes the pattern; is it regular and steady like a drumbeat?
Heart rate describes the speed; is it going too fast or too slow?
You can have a rhythm problem without a rate problem.
You can have a rate problem without a rhythm problem.

A normal rhythm is called sinus rhythm.
If the heart beats too slow (bradycardia) or too fast (tachycardia), that’s a rate issue.
If the heartbeat is irregular or coming from the wrong area of the heart, that’s a rhythm problem, like atrial fibrillation.
Why does it matter?

Rhythm problems can cause palpitations, flutters, dizziness, and some can increase stroke risk.
EKGs and wearable devices help us evaluate both rhythm and rate.
Understanding the difference helps you know when symptoms need medical attention.

03/11/2026

I have no idea how to respond when someone says "I saw your TikTok the other day."

Just out here trying to help spread the word about heart health...

03/10/2026

What really is a heart attack?

Dr. Krock breaks it down in simple terms:
A heart attack is a plumbing emergency, the heart isn’t getting enough blood (and oxygen) because of a blockage or partial blockage. When the heart muscle struggles, you can feel chest pain, shortness of breath, dizziness, or fatigue.

But here’s the important part:
✔️ A heart attack doesn’t always cause chest pain.
✔️ Blood tests like Troponin confirm if the heart muscle is being damaged from lack of blood flow.

Understanding the difference can save lives.

Follow for more heart health education from Dr. Marc Krock, Interventional Cardiologist.
Serving Frisco, McKinney & North Texas.

Have a topic you want explained next? Drop it below.

03/06/2026

A stroke is not a heart attack.

A stroke is a blood flow problem to the brain, while a heart attack is a blood flow problem to the heart. Different organs, same emergency.

High blood pressure, high cholesterol, diabetes, and poor lifestyle habits increase your risk for both.

If you notice sudden speech problems, weakness on one side, or confusion, seek emergency care immediately. Time matters.

03/04/2026

Medicine is what I do.
But taking care of my own heart is how I live.

Most of my “fun” activities - skiing, tennis, workouts - happen to be heart healthy.

Not because they have to be… but because you can build a life that supports your health and still enjoy it.

Taking care of your heart doesn’t mean sitting on the sidelines.
It means building stamina for the life you want to live.

03/02/2026

“I was told it would take 6–9 months to feel better.
I felt better in two weeks.”

This week we discussed Cardiac Contractility Modulation (CCM) — an advanced option for certain patients with chronic heart failure and reduced ejection fraction who are still symptomatic despite medication.

In one case:
EF improved from 30% to 50%.
Breathing improved.
Energy returned.
Life resumed.

CCM isn’t for everyone. Patient selection matters.
But for the right heart failure patient, it can significantly improve quality of life and help reduce hospitalizations.

If you have heart failure and still feel limited, it may be time to ask about advanced treatment options.

02/27/2026

What is heart failure?
Heart failure does NOT mean your heart has stopped. It means the heart isn’t pumping or relaxing well enough to supply your body with the blood it needs.
There is a wide spectrum. Some cases are mild and manageable for years. Others are more severe and require advanced treatment.
The heart must squeeze and relax properly. When either phase doesn’t function efficiently, we call it heart failure.
The good news? With early diagnosis and proper treatment, many patients live long, active lives.

02/25/2026

Heart disease is still the number one killer of women.

In my experience, many women minimize symptoms or put their own care last. That delay matters. Knowing where your heart health stands (especially starting around age 40) allows us to identify risk early and prevent bigger problems down the road.

Prevention works best when it starts before symptoms do.

If you live in the North Texas area - Frisco, Plano, McKinney, Prosper - you can set an appointment with Dr. Krock's team at TheHeartSmartGroup.com.

02/23/2026

Most heart disease doesn’t start with a heart attack.
It starts quietly — years earlier.

Your 40s are when things like blood pressure, cholesterol patterns, inflammation, and plaque begin to shift… often without symptoms.
This is why a baseline cardiology visit matters.
Seeing a cardiologist in your 40s isn’t about being “sick.”

It’s about:
• Understanding your personal risk
• Catching silent issues early
• Tracking changes over time
• Preventing problems before they become emergencies

By the time symptoms show up, heart disease has usually been there for years.

A baseline gives you data, context, and a plan — not panic.
Prevention is powerful. And it starts sooner than most people think.
If you’re in your 40s (or close), this is your sign to get checked.

02/20/2026

Cardiac arrest is an electrical emergency, not a heart attack. It happens when the heart’s electrical system goes haywire, causing dangerous rhythms like fibrillation that can make a person collapse without warning.

This can be caused by genetic electrical conditions, scarring from a past heart attack, certain medications, or drug use. Understanding the difference between a heart attack and cardiac arrest can save lives.

Watch the full explanation on YouTube for more heart health education.

02/17/2026

“I feel fine” isn’t a heart health plan.

Some of the most serious heart conditions don’t cause symptoms early on, including atrial fibrillation, high blood pressure, and early plaque buildup in the arteries. Many people feel completely normal while these issues quietly progress.

Prevention isn’t about how you feel today.
It’s about what we catch early enough to treat.

Screening and awareness help prevent emergencies before they happen.
Feeling fine is great, knowing your heart is healthy is better.

Share this with someone who says they're fine but they may not be.

Address

4510 Medical Center Drive Suite 209
McKinney, TX
75069

Telephone

+14694402570

Website

http://www.cardiackrock.com/

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