Cardiologist Serving Katy, Sugar Land, Greater Houston
Heart Tests and Procedures, Explained
At Advanced Cardiology, Dr. Adnan Khalid evaluates adults with heart and blood vessel conditions and recommends cardiac tests and procedures only when they are likely to help answer a question or guide treatment.
Office visits and EKGs take place at our Katy and Sugar Land offices. Other tests are performed or arranged by our office, and catheter-based procedures and device implants are performed at an affiliated hospital. Patients from Richmond, Rosenberg and nearby communities visit our Katy and Sugar Land offices.
This page explains what each test or procedure is used for, what it can and cannot show, and where it takes place, so you know what to expect.
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
Physician-Led Evaluation
Dr. Khalid is board certified in Interventional Cardiology, Cardiovascular Disease, and Advanced Heart Failure & Transplant Cardiology. He reviews your history and results before recommending any procedure.
The Right Test for the Question
Tests are chosen to answer a specific question, and Dr. Khalid explains what each one can and cannot show.
Less Invasive Options When Appropriate
Many catheter-based procedures use a small access point in the wrist or groin, which often means a shorter recovery than open surgery. Recovery still varies from person to person.
Personalized Care
Every treatment plan is tailored to your health needs, other conditions and preferences.
Finding heart problems early helps guide treatment.
Most heart tests are noninvasive, and each one answers a different question:
A quick test that records the heart’s electrical activity using small patches on the chest, arms and legs. It can show arrhythmias, signs of a previous heart attack and other abnormalities, but it records only a few seconds and cannot show the coronary arteries. EKGs are performed in our offices. Learn more about EKG testing.
An ultrasound of the heart that shows its structure, pumping function, valves and blood flow. It does not use radiation and does not show the coronary arteries directly. A transesophageal echocardiogram (TEE), which gives closer views from the esophagus under sedation, is done in a hospital.
Shows how your heart responds to exertion on a treadmill, or to medicine if you cannot exercise. A standard exercise stress test monitors your EKG, heart rate, blood pressure and symptoms without a radiotracer. A nuclear stress test adds a small amount of radioactive tracer and camera images, and a stress echocardiogram adds ultrasound images. Stress tests can suggest reduced blood flow from narrowed arteries, but they can miss some blockages or give results that further testing does not confirm.
Portable devices that record your heart rhythm over 24 hours or longer to catch rhythm problems that come and go. A Holter monitor records continuously, usually for one to two days; an event monitor is worn for longer and records when you have symptoms.
Detailed imaging of the heart and blood vessels. A coronary calcium scan measures calcified plaque, CT angiography uses contrast dye to show the coronary arteries, and cardiac MRI shows heart muscle structure and function. CT uses radiation, and contrast agents are not suitable for everyone.
Echocardiograms, stress tests, monitors and cardiac imaging are performed or arranged by our office, and our staff will tell you where your test is scheduled.
When medicines and lifestyle changes are not enough, or when testing points to significant artery disease, catheter-based procedures may help restore blood flow. These procedures are performed in a hospital catheterization laboratory at an affiliated hospital, not in our office.
A procedure that uses a thin tube (catheter), usually inserted at the wrist or groin, to examine the heart’s arteries, pressures and overall function.
Coronary angiography uses contrast dye and X-rays to show where arteries are narrowed or blocked.
It can be followed by angioplasty or stenting during the same procedure when appropriate. Learn more about cardiac catheterization and angiography.
Angioplasty opens narrowed or blocked arteries using a small balloon.
Stents are small mesh tubes placed to help keep arteries open.
In stable disease, stents mainly relieve chest pain; during a heart attack, quickly opening the artery can limit damage to the heart muscle. Whether a stent, bypass surgery or medicines alone is best depends on the location and complexity of the blockages, heart function and other conditions, not only on how many arteries are narrowed. See angioplasty and stents.
Treats narrowed arteries in the legs to improve circulation and relieve leg pain with walking, usually after walking programs and medicines have been tried.
Specialized hospital-based tests and treatments for heart rhythm disorders such as atrial fibrillation (AFib). When an electrophysiology study or ablation may help, Dr. Khalid discusses the options and coordinates referral to an electrophysiology team.

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 disease, interventional cardiology, and 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 and 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. Dr. Adnan Khalid is now seeing patients at our Katy and Sugar Land offices and is accepting new patients. Patients from Houston and surrounding areas visit these two offices.
American Board of Internal Medicine
Interventional Cardiology
Some heart conditions call for specialized hospital-based procedures. Dr. Khalid evaluates whether one of these may help, explains the alternatives, and coordinates the procedure or referral:
A small device implanted under the skin of the chest that helps prevent the heart from beating too slowly. Pacemakers are implanted in a hospital, and regular device checks follow. See ICD and pacemaker implants.
A device for people at high risk of dangerous heart rhythms. It monitors the heartbeat and can deliver pacing or a shock to restore a normal rhythm, lowering the risk of sudden cardiac death. ICDs are implanted in a hospital.
A controlled procedure that uses a brief electrical shock, given under sedation, or medicine to reset the heart’s rhythm in patients with AFib or certain other arrhythmias. It is performed in a hospital, sometimes after a TEE to check for clots. Learn more about cardioversion.
Uses heat or cold energy delivered through a catheter to treat small areas of heart tissue that cause certain arrhythmias. Ablation is performed by electrophysiology teams in a hospital, and Dr. Khalid can coordinate referral when it may help.
Damaged heart valves may be repaired or replaced with surgery or, for selected patients, catheter-based techniques. These are performed by specialized heart teams in a hospital; Dr. Khalid monitors valve disease with echocardiograms and coordinates referral when treatment is needed.
If you have ongoing or worsening heart symptoms, Dr. Khalid may recommend testing first, and a procedure only if the results show it is likely to help.
Symptoms that often prompt an evaluation include:
Chest pain, pressure or tightness with activity
Shortness of breath with activity or when lying flat
Irregular heartbeat or palpitations
Dizziness or fainting spells
Leg swelling, or leg pain with walking
Unusual fatigue or reduced exercise tolerance
Call 911 instead of scheduling if you have chest discomfort that lasts more than a few minutes or goes away and comes back; shortness of breath; discomfort in the arms, back, neck, jaw or stomach; a cold sweat, nausea or lightheadedness; fainting; or stroke signs such as face drooping, arm weakness or speech difficulty, even if they go away. Office messages and appointment requests are not for emergencies.
Before a hospital procedure, our office explains where it will take place and how to prepare. Your care team will give you specific instructions about eating and drinking and about blood thinners, diabetes medicines or other drugs; do not stop or change any medicine on your own. Tell the team about allergies, especially to contrast dye, and about kidney problems, and arrange for someone to drive you home.
Every procedure has benefits and risks. Catheter-based procedures can cause bleeding or bruising at the access site, reactions to contrast dye or effects on kidney function and, less commonly, serious complications such as blood vessel damage, heart attack or stroke. Device implants carry risks such as infection or bleeding. Dr. Khalid reviews your individual risks and alternatives before you decide. Recovery varies: some people go home the same day, while others stay longer. Follow-up visits in our office review your recovery, medicines and risk factors.
Are any procedures done in the office? Office visits and EKGs take place in our Katy and Sugar Land offices. Catheterization, stents, cardioversion, TEE and device implants are performed at an affiliated hospital, and our office tells you where to go.
Can I get a second opinion before a procedure? Yes. Bring your records, test results and imaging, and Dr. Khalid will review them and discuss whether a procedure, medicines or further testing makes the most sense for you.
Advanced Cardiology is accepting new patients for consultations, second opinions and ongoing care.
We accept most major insurance plans, and coverage is verified individually. Please call to confirm office hours for each location.
📞 Call (713) 258-6111
or Request an Appointment Online
Our goal is to provide compassionate, thorough care, from diagnosis to recovery.
We see patients at two offices in Sugar Land and Katy.
7102 Tarrington Ave, Suite 505
Sugar Land, TX 77479
410 W Grand Pkwy S, Suite 4D
Katy, TX 77494
📞 Phone: (713) 258-6111
📧 Email: info@advcardiologytx.com
Sources: NHLBI: Heart Tests; NHLBI: Cardiac Catheterization; NHLBI: Pacemakers; American Heart Association: Warning Signs of a Heart Attack.
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.