Most heart disease does not announce itself. It builds quietly over decades in people who feel perfectly fine, and the first symptom, for far too many, is the event itself. That is the entire argument for a preventive heart screening — a deliberate look at your heart and blood vessels while you are still well, so that small numbers can be corrected before they become big problems. At Northwest Cardiovascular Clinic, we see patients from Tomball, Cypress, Spring, and across northwest Houston who want exactly that: a clear picture of where they stand. Here is what a genuine heart health check-up includes, who should have one, and what the numbers actually mean.
Why a heart screening is different from a regular physical
An annual physical is broad by design. It covers a lot of ground quickly, and cardiovascular risk often gets condensed into a blood pressure cuff and a cholesterol panel. A preventive cardiology visit goes further. It puts your numbers, your family history, and your symptoms into a single risk estimate, then asks a more useful question than “is anything wrong today?” — namely, what is your trajectory, and what would change it?
That distinction matters because the tools have improved considerably in the last two years. The American Heart Association’s PREVENT equations, now built into national guidelines, estimate your 10-year and 30-year risk of both heart attack and stroke and heart failure — something older calculators did not do. They also incorporate kidney function and metabolic health, and they removed race as a predictor. For a 45-year-old, a 30-year risk number is often far more motivating than a 10-year one.
Who should have a preventive heart screening
You do not need symptoms to benefit. Consider a formal cardiovascular evaluation if any of the following apply:
- You are a man over 40 or a woman over 45 and have never had your risk formally calculated.
- A parent or sibling had a heart attack, stent, bypass, or stroke early — before 55 in men, before 65 in women.
- You have high blood pressure, high cholesterol, diabetes or prediabetes, or a high body weight.
- You smoke, vape, or quit within the last several years.
- You had a pregnancy complicated by preeclampsia, gestational diabetes, or preterm delivery — all now recognized as long-term cardiovascular risk markers in women.
- You have an inflammatory condition such as rheumatoid arthritis, lupus, or psoriasis, or chronic kidney disease.
- You are starting a serious exercise program after years away from one.
- You have symptoms you have been explaining away — breathlessness on the stairs, chest tightness with exertion, fluttering, or swelling. Our guide on when to see a cardiologist covers those in detail.
What a heart health check-up should include
1. History, exam, and a real risk calculation
The most valuable ten minutes of the visit involve no equipment at all: what your parents and siblings have had and at what age, what you notice on exertion, what you smoke or vape, how you sleep, and what medications and supplements you take. That, combined with your numbers, produces a PREVENT risk estimate — the anchor for every decision that follows.
2. Blood pressure, measured properly
Blood pressure is the single most modifiable driver of heart attack, stroke, heart failure, and kidney disease — and it is routinely measured badly. Done correctly, it means sitting quietly for five minutes, back supported, feet flat, arm at heart level, correct cuff size, and an average of readings rather than one number.
The categories: normal is under 120/80; elevated is 120–129 systolic with diastolic under 80; stage 1 hypertension is 130–139 or 80–89; stage 2 is 140/90 or higher. Under the 2025 ACC/AHA hypertension guideline, stage 1 is handled by risk: if your estimated 10-year total cardiovascular risk is 7.5 percent or higher, medication is recommended alongside lifestyle change; below that, lifestyle change is trialed for three to six months first. Home readings carry real weight here, so bring your home cuff to the visit and we will check it against ours.
3. A modern lipid panel — not just total cholesterol
The 2026 ACC/AHA dyslipidemia guideline replaced the 2018 cholesterol guideline and changed the conversation in a useful way: explicit LDL cholesterol and non-HDL targets are back, rather than percentage reductions alone. For people who already have established cardiovascular disease, the goal is an LDL under 70 mg/dL, and under 55 mg/dL for those at very high risk. For primary prevention, the target depends on your calculated risk, which is why the risk estimate comes first.
Two additional tests deserve mention. ApoB counts the actual number of cholesterol-carrying particles and tracks risk more faithfully than LDL alone, particularly in people with diabetes, high triglycerides, or a “normal” LDL who keep having events. And lipoprotein(a), or Lp(a), is an inherited risk factor that guidelines now recommend measuring at least once in every adult’s lifetime. It is largely genetic and stays roughly stable, so one test answers the question permanently. Levels at or above 50 mg/dL (about 125 nmol/L) are associated with meaningfully higher lifetime risk — and are a strong reason to be aggressive about every other risk factor, and to have first-degree relatives tested.
4. Metabolic bloodwork
A fasting glucose and hemoglobin A1c identify prediabetes and diabetes, both of which quietly accelerate arterial disease. Screening is recommended for adults 35 to 70 with overweight or obesity, and earlier with a family history. Kidney function and a urine albumin test round out the picture — the kidneys and the heart fail together far more often than most people realize.
5. An EKG
A resting EKG takes about a minute, costs little, and can reveal atrial fibrillation, a prior silent heart attack, thickened heart muscle, or a conduction problem. If you have described palpitations, a wearable Holter monitor extends that snapshot across days.
6. Imaging and functional testing — when the risk score is uncertain
Not everyone needs a scan. The tests below are chosen deliberately, usually when your risk falls in the middle and the right decision is not obvious.
Coronary artery calcium (CAC) score. A quick, non-contrast CT that measures calcified plaque in the coronary arteries. It is most useful for men over 40 and women over 45 at borderline or intermediate risk when the decision to start a statin is genuinely uncertain. A score of zero is reassuring and may justify waiting; a high score reclassifies you upward and usually settles the question.
Echocardiogram. A painless ultrasound of the heart that shows pumping strength, valve function, chamber size, and wall thickness. It is the right test for a murmur, unexplained breathlessness, or swelling.
Stress testing. For symptoms that appear with exertion, a stress test shows how the heart behaves under load. It is a diagnostic test for symptoms — not a routine screening test for people who feel well.
Vascular ultrasound. Circulation problems outside the heart matter too. An ankle-brachial index screens for peripheral artery disease, a carotid ultrasound looks at the neck arteries, and a one-time abdominal ultrasound to screen for an aortic aneurysm is recommended for men aged 65 to 75 who have ever smoked. We also evaluate the leg veins when there is swelling or aching.
The eight numbers that decide most of your risk
The American Heart Association groups cardiovascular health into eight factors — four habits and four measurements. They are unglamorous, and together they account for the large majority of preventable heart disease:
- Diet — a pattern built on vegetables, fruit, whole grains, legumes, fish, nuts, and olive oil.
- Physical activity — about 150 minutes a week of moderate activity, or 75 of vigorous.
- Nicotine exposure — including vaping and secondhand smoke.
- Sleep — seven to nine hours, and treatment for sleep apnea if you snore or wake unrefreshed.
- Body weight, blood lipids, blood glucose, and blood pressure.
Nothing on that list requires a prescription to start improving this week.
What screening cannot do
Being honest about the limits is part of doing this well. A normal screening does not guarantee you will not have a heart attack; risk is reduced, never erased. Some tests carry small downsides — a CT delivers a modest radiation dose, and any test can turn up an incidental finding that leads to more testing and worry. Screening tests in people without symptoms are also not always covered by insurance, so we discuss cost before ordering anything. And no screening replaces acting on symptoms: call 911 for chest pressure lasting more than a few minutes, sudden severe shortness of breath, fainting, or one-sided weakness or slurred speech. Those are emergencies, not appointments.
Preventive heart screening in Tomball & Cypress
Northwest Cardiovascular Clinic is located just off SH 249 (Tomball Parkway) in northwest Houston, serving Tomball, Cypress, Spring, and the surrounding communities. Dr. Ismail Dairywala is a board-certified cardiovascular specialist, and because we perform EKG, echocardiography, stress testing, and vascular ultrasound in our own office, most patients complete their evaluation and get an explanation of the results without being sent across town.
If it has been years since anyone actually calculated your risk — or never — that is worth one visit. Contact our office to schedule a preventive heart evaluation, or call (281) 807-5253.
Frequently asked questions
What tests are included in a heart health screening?
A thorough preventive heart evaluation includes a detailed history and physical, properly measured blood pressure, a lipid panel with apoB and a once-in-a-lifetime lipoprotein(a) level, fasting glucose or hemoglobin A1c, kidney function, and a resting EKG. Imaging such as a coronary calcium score, echocardiogram, stress test, or vascular ultrasound is added selectively, based on your calculated risk and your symptoms.
At what age should I get my heart checked?
Cardiovascular risk should be formally calculated by about age 40 in men and 45 in women, and earlier if you have high blood pressure, diabetes, high cholesterol, a smoking history, or a parent or sibling who had heart disease before 55 in men or 65 in women. Blood pressure and cholesterol screening begin well before that in routine primary care.
Do I need a heart screening if I have no symptoms?
Often, yes. Heart disease develops silently over decades, and for many people the first symptom is the event itself. The point of screening is to find modifiable risk — blood pressure, cholesterol, blood sugar, Lp(a) — while it is still easy to change. That said, screening is about risk assessment, not certainty, and it never replaces getting new symptoms evaluated promptly.
What is a coronary calcium score and do I need one?
A CAC score is a fast, non-contrast CT that measures calcified plaque in the heart's arteries. It is most useful for men over 40 and women over 45 whose calculated risk is borderline or intermediate and where the decision to start a statin is genuinely uncertain. A score of zero is reassuring; a high score usually settles the decision in favor of treatment.
Should I have my lipoprotein(a) tested?
Current guidelines recommend measuring lipoprotein(a) at least once in adulthood. It is inherited and stays fairly stable through life, so a single test answers the question permanently. A level at or above about 50 mg/dL (roughly 125 nmol/L) signals higher lifetime risk, which makes tight control of blood pressure, LDL cholesterol, and other risk factors more important — and is a reason to have close relatives tested.
Where can I get a preventive heart screening near Tomball or Cypress?
Northwest Cardiovascular Clinic offers preventive cardiovascular evaluations at our office just off SH 249 in northwest Houston, serving Tomball, Cypress, Spring, and the surrounding communities. EKG, echocardiography, stress testing, and vascular ultrasound are performed in-house, so most patients complete testing and review results without a separate referral. Call (281) 807-5253 to schedule.