Life-Saving Cardiac Care: A Comprehensive Guide
Content reviewed and edited by Dr. Mario Quintanilla, MD. Walk in or call (713) 660-0001 anytime.

What to Do in a Cardiac Emergency
If you think you or someone near you is having a heart attack, call 911 or get to the nearest emergency room immediately — do not wait to see if symptoms pass, and do not drive yourself if you can avoid it. Warning signs include chest pain or pressure lasting more than a few minutes, shortness of breath, pain spreading to the arm, jaw, neck, or back, cold sweat, and nausea. Bellaire ER at 5302 Bellaire Blvd is open 24/7, with board-certified emergency physicians and on-site EKG, lab, X-ray, and ultrasound, so cardiac evaluation starts the moment you arrive.
What Counts as a Cardiac Emergency
Cardiac emergencies include heart attack (blood flow to part of the heart muscle is blocked, usually by a clot in a coronary artery), cardiac arrest (the heart abruptly stops beating effectively), unstable angina, dangerous arrhythmias, and sudden worsening of heart failure. Heart attack and cardiac arrest are not the same thing: a heart attack is a circulation problem, while cardiac arrest is an electrical problem that stops the heart — and a heart attack can trigger cardiac arrest. Both are covered in plain language in the MedlinePlus overview of heart attack and the MedlinePlus guide to cardiac arrest.
With any of these conditions, minutes matter. The faster blood flow or a normal rhythm is restored, the more heart muscle survives.
Red Flags — Go to the ER Now
Call 911 or come straight to the ER for any of the following:
- Chest pain, pressure, squeezing, or fullness that lasts more than a few minutes, or that goes away and comes back
- Pain or discomfort spreading to one or both arms, the jaw, neck, back, or stomach
- Shortness of breath, with or without chest discomfort
- Cold sweat, nausea, or lightheadedness along with chest discomfort
- Fainting or near-fainting, or a racing or pounding heartbeat with dizziness
- Known heart disease with symptoms that are new, worse, or not relieved by prescribed nitroglycerin
Women are somewhat more likely than men to have less typical symptoms — shortness of breath, nausea or vomiting, and back or jaw pain — sometimes without prominent chest pain. Don’t dismiss these. The American Heart Association’s heart attack warning signs are worth knowing before you ever need them.
If someone collapses, is unresponsive, and is not breathing normally, that is cardiac arrest: call 911, start hands-only CPR immediately (push hard and fast in the center of the chest), and use an AED if one is available.
ER, Urgent Care, or Telemedicine?
Possible cardiac symptoms are never a fit for urgent care or a video visit — chest pain, pressure, or sudden shortness of breath needs an in-person emergency evaluation with an EKG and blood testing. Our guide on when to visit the ER walks through the distinction for other symptoms, and telemedicine remains a good option for minor illnesses and follow-up questions — just not for a possible heart problem.
How Bellaire ER Evaluates Chest Pain
When you arrive with cardiac symptoms, evaluation starts immediately:
- EKG (electrocardiogram) as soon as you arrive, to look for the electrical patterns of a heart attack or arrhythmia
- Cardiac blood tests (troponin) in our on-site lab, to detect heart muscle injury
- Chest X-ray and ultrasound on site, to evaluate the heart and lungs and rule out other causes
Not all chest pain is cardiac — reflux, muscle strain, anxiety, lung problems, and blood clots can all cause similar symptoms. That’s exactly why emergency chest pain evaluation exists: to find or rule out the dangerous causes quickly. The same applies to sudden shortness of breath, which can signal a heart or lung emergency.
Emergency Treatment and Stabilization
Our emergency physicians and nurses are trained in advanced cardiac life support (ACLS). Depending on what the evaluation shows, treatment may include oxygen, aspirin and other cardiac medications, IV therapy, and — for cardiac arrest or dangerous arrhythmias — CPR and defibrillation to restore a normal rhythm.
If testing shows a heart attack that needs a cardiac catheterization procedure (such as angioplasty and stenting to reopen a blocked artery), we stabilize you and arrange rapid transfer to a nearby hospital with a cardiac catheterization lab. Because we’re a freestanding ER with no waiting-room bottleneck, the diagnosis and the transfer decision happen fast — and that speed is what protects heart muscle.
After the Emergency
Recovery doesn’t end at discharge. Before you leave, our team reviews your results with you and provides clear instructions for follow-up with a cardiologist or your primary care physician, medication guidance, and risk-factor management — blood pressure, cholesterol, diabetes, smoking, and activity. For patients who have had a heart attack, a structured cardiac rehabilitation program through your cardiologist significantly improves long-term outcomes, and we’ll point you in the right direction.
The Bottom Line
Know the warning signs, take them seriously, and act fast — calling 911 or getting to an ER within minutes, not hours, is the single most important thing you can do in a cardiac emergency. Bellaire ER is open 24/7 with board-certified emergency physicians and on-site EKG, lab, and imaging.
