What Are the Signs of Blocked Arteries in the Heart?
Signs of blocked heart arteries include chest pressure with exertion, breathlessness and fatigue. Learn the warning signs, risk factors, tests and treatment.
Cardiologist Serving Katy, Sugar Land, Greater Houston

Dr. Khalid reviews your symptoms, history and test results himself
Visits in Katy and Sugar Land
Catheter and device procedures at an affiliated hospital
Office follow-up on medicines and risk factors
There is no Advanced Cardiology office in Rosenberg. Patients who live or work in Rosenberg see Adnan Khalid, MD, at our Sugar Land office (7102 Tarrington Ave, Suite 505) or our Katy office (410 W Grand Pkwy S, Suite 4D). Dr. Khalid often works alongside primary care doctors to manage heart disease and the risk factors that lead to it.
Many patients from Rosenberg choose our Sugar Land office, and others find the Katy office more convenient depending on where they work or which roads they use. You can pick either one – it is the same practice and the same physician, so your chart and test results follow you between offices.
To schedule, call (713) 258-6111 and mention your preferred location. Because hours can vary by office, please call to confirm office hours for each location. Please do not use phone messages or the online request form for urgent symptoms.
Do you need a referral? Not always. Some people make an appointment on their own; others are sent by a primary care doctor, an urgent care clinic or a hospital after a visit. Some insurance plans do require a referral, so our staff will help you check before your appointment. If your primary care doctor is in Rosenberg or a nearby community, ask the office to fax or send recent notes, lab results and any EKG tracings to us ahead of time. After your visit, Dr. Khalid sends his findings and recommendations back to your doctor.
Referral reasons vary from person to person. Some of the more common ones are:
Some people come for a single opinion on one question, such as whether a symptom is heart-related. Others with long-term conditions, like heart failure or atrial fibrillation, see Dr. Khalid regularly while their primary care doctor continues to manage their general health. Either approach is common, and you can discuss what makes sense for you at the first visit.

Adnan Khalid, MD, Cardiologist
Adnan Khalid, MD, specializes in treating coronary artery disease, peripheral artery disease, heart failure, hypertension, arrhythmias, and hyperlipidemia. He has over 10 years of experience in the field of cardiovascular medicine.
Dr. Khalid graduated from his medical school among the top 10 out of 250 medical students in his class. He is fellowship trained in cardiovascular diseases, interventional cardiology, advanced heart failure, and transplant cardiology. He is focused on providing personalized and compassionate care. Dr. Khalid believes in spending time with his patients and listening to their needs and is committed to offering excellent care.
Dr. Khalid is an avid reader. He is eager to learn new things; he likes to work out and spend time with his family. When off from work, he likes to travel and spend time in nature along with family and friends. He is married with three children.
American Board of Internal Medicine
Interventional Cardiology

High blood pressure, diabetes and high cholesterol often cause no symptoms, yet together they raise the risk of heart attack, stroke, heart failure and artery disease in the legs. A primary care doctor treats these conditions every day. A cardiologist becomes involved when:
The 2026 ACC/AHA guideline links cholesterol goals to each person’s level of risk, with lower LDL targets for people at higher risk. Dr. Khalid can explain where you fit and coordinate changes with your primary care doctor. Learn more about diabetes and heart disease and high cholesterol treatment.
The practice accepts new patients, and a first visit generally follows the same pattern at either office:
Please bring your medicines (or an accurate list), recent lab results and any records from other doctors or hospitals. Our patient information page has more details.
Questions about coverage, referrals or prior authorization are best answered by phone before your visit, since every plan is different. For some follow-up visits, you can ask our office whether a video visit is appropriate; telehealth rules depend on where you are physically located during the visit.
Symptoms
Many symptoms have causes outside the heart, which is why a careful evaluation matters. Call to schedule a visit, or ask your primary care doctor about a referral, if you notice any of the following. If a symptom is sudden or severe, or matches the warning signs at the end of this page, call 911.
Chest pressure or tightness with exertion that settles with rest.
Shortness of breath that is new or worse than before during normal activities.
Palpitations: a racing, pounding, fluttering or skipping heartbeat.
Dizziness or fainting, especially during activity.
Swelling of the ankles, feet or legs, or quick weight gain from fluid.
Leg cramping when walking that eases with rest, which can be a sign of peripheral artery disease.
It also helps to keep a short symptom diary before your visit: what you felt, when it started, how long it lasted and what you were doing. A home blood pressure log and a list of times you felt palpitations can give Dr. Khalid useful clues that a single office visit may miss.
Testing
Dr. Khalid recommends tests only when the results could change your care. Each test answers a different question, and none shows everything. Here is how testing is organized:
You will receive instructions for each test from your care team. Keep taking your medicines unless your care team gives you specific instructions to change them.
Results are reviewed by Dr. Khalid and discussed with you, usually at a follow-up visit or by phone. A normal result is reassuring but does not always rule out every condition, and an abnormal result does not always mean a procedure is needed. Dr. Khalid will explain what your results mean for you and what, if anything, comes next.
Treatment
Treatment depends on what your evaluation shows. Many people improve with a combination of steps, and the plan is adjusted over time:
Follow-up visits let Dr. Khalid check your progress, review results and share updates with your primary care doctor. Refill requests can be sent through our prescription request page.
Do not drive yourself to an office or wait for an appointment if you have possible heart attack symptoms: chest discomfort lasting more than a few minutes or that comes and goes, shortness of breath, discomfort in one or both arms, the back, neck, jaw or stomach, a cold sweat, nausea or lightheadedness. Call 911 as well for sudden face drooping, arm weakness or trouble speaking – even if these symptoms pass.
Sources: American Heart Association: Warning Signs of a Heart Attack · American Stroke Association: Stroke Symptoms · NHLBI: High Blood Pressure · NHLBI: Peripheral Artery Disease


Please print out your paperwork and bring it to your appointment at Advanced Cardiology. If your insurance requires authorization, please be sure to have that information sent to our office or bring it with you to your appointment, along with any medical records you may have. Please also make sure to bring your insurance cards, photo ID, and medication list.
Thank you, and we look forward to meeting you! Contact us today with any questions.
Most insurance plans accepted
(713) 258-6111
Katy & Sugar Land Cardiologist
# Cooperative & professional staff. Dr. Khalid is highly competent & experienced. Very kind & friendly too.
# He’s A Very Caring & Concerned Doctor. He Asks Important Questions, He Allows Me To Ask Questions & Fully Answers To My Satisfaction. He Diagnosis & Does Whatever It Takes To Fix My Health Issues. He’s A Wonderful Doctor…& Most Of All, I Trust Him & His Staff.
Read More…..

Signs of blocked heart arteries include chest pressure with exertion, breathlessness and fatigue. Learn the warning signs, risk factors, tests and treatment.
Sudden high blood pressure can come from stress, pain, caffeine, missed pills or decongestants. Learn when 180/120 is an emergency and how to prevent spikes.
Skipped heartbeats are usually premature beats (PACs or PVCs) triggered by caffeine, stress or poor sleep. Learn when they are harmless and when to get checked.
Anxiety can cause chest pain and a pounding heart, but so can heart problems. Learn how they differ, how doctors rule out heart causes and when to call 911.
Early signs of heart failure include breathlessness, fatigue, ankle swelling and rapid weight gain. Learn the symptoms, risk factors and how it is diagnosed.

A suddenly racing heart is often stress, caffeine or dehydration, but can be SVT or atrial fibrillation. Learn the causes, warning signs and when to call 911.
Katy & Sugar Land Cardiologist
Advanced Cardiology welcomes new patients at its offices in Katy and Sugar Land. Call our office or send an appointment request, and our staff will follow up.
Most major insurance plans accepted; coverage is verified individually.
For possible heart attack or stroke symptoms, call 911.