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ADC Cardiologist, Dr. Joseph Imsais conducts a vein therapy clinic for patients with varicose veins. At this time, he treats patients who require varicose vein treatment therapy out of medical necessity, pain or blocked veins, and not for cosmetic reasons.

Dr. Imsais shares his guide to vein therapy below, you may also download it here: ADC Patient Guide to Vein Therapy

Patient’s Guide to Vein Therapy

  1. We will schedule you to see Dr. Imsais for an evaluation of varicose veins.  You may print, complete and bring the screening form to your first visit: ADC Vein Screening Form
  1. If necessary, he will ask you to please schedule a vein-mapping ultrasound. The duration of the ultrasound (1-2 hours) is determined by the severity of the varicose veins.
  1. Dr. Imsais will see you on the same day you have your vein mapping exam so he can discuss the results with you.
  1. If your results are revealed to be significantly abnormal, Dr. Imsais will recommend that you wear compression stockings for up to 3 months. Should compression stockings be recommended, we will also call your insurance company to obtain authorization for Venous Ablation. Venous Ablation is a 1 hour, in-office procedure that is performed to treat symptomatic varicose veins.
  1. After wearing compression stockings for 3 months, Dr. Imsais will ask to see you so that he can discuss the procedure, sign the necessary consent forms and answer any questions you may have.
  1. Upon completing the post-compression-stockings visit with Dr. Imsais, you will have the option to schedule Venous Ablation, if indicated.
  1. For the procedure, you will be prescribed a mild sedative to take just prior the procedure. For this reason, you will need to have a driver accompany you.

You will also need to bring your compression stockings to the procedure.

  1. After the procedure, you can resume normal activity the following day with the exception of not using a bathtub, Jacuzzi, pool etc., not performing aerobic exercise, or lifting more than 25 lbs for 2 to 4 weeks following the procedure.
  1. Following the venous ablation, you will need to schedule a limited ultrasound that takes 30 minutes or less to complete.

**There are four veins that are usually the cause or source of these varicose veins. Some patients may need to have one vein treated and some will need all four veins treated. If you need multiple veins treated, we will usually schedule multiple procedures one week apart from each other.

Please note: We only treat medically necessary varicose vein at this time.  We do NOT treat spider veins which are considered cosmetic.

Please contact ADC cardiology at 512-901-4051 to schedule a vein clinic appointment.


General surgery packet for patients of Dr. Thomas Brown, Dr. Francis Buzad and Dr. Louis Corne.

This packet includes:

  • Reminders for what to do and bring the day of surgery
  • Directions to the ADC Ambulatory Center
  • Pre-op instructions
  • Post-op instructions while taking pain medication


General Surgery Patient Packet (PDF)

ADC’s Laboratory has eliminated the time draws between the fasting and two-hour states (1/2 hour, 1 hour and 1½ hour) during a two-hour oral glucose tolerance test.

This means two-hour oral glucose tolerance test will no longer collect five specimens — it will collect specimens at fasting and two hours post-dose.

According to the American Diabetes Association and the World Health Organization, the results of the test can be used to help evaluate a patient for diabetes.

You have been asked to go on a clear liquid diet for a screening or procedure.  But what does it mean?

In general, a clear liquid diet consists of clear liquids or foods that turn to liquids at room temperature. For example: water, broth, clear juices, tea/coffee. The purpose of clear liquid diet is mainly to provide rest to your gastrointestinal tract prior to a test or procedure such as colonoscopy. It will also ensure adequate visibility for the procedure.

The goal of clear liquid diet is to keep you hydrated, provide minerals and vitamins for energy and to keep your stomach and intestines rested. It will not meet your nutritional needs and hence it is always recommended short term only. This diet can also be safely recommended for patients with diabetes. Remember your goal is not to eat or drink sugar free liquid or food.

Foods Recommended on Clear Liquid Diet

Do not consume clear liquids which are red or purple prior to a colonoscopy.

Substances which are ALLOWED:

  • Clear Broth (fat- free)
  • Clear soups
  • Plain Gelatin (Jell-O)
  • Popsicle’s without fruit pulp or pieces of fruit
  • Juices without pulp (Apple and white cranberry)
  • Lemonade without pulp
  • Sport Drinks (Gatorade)
  • Clear sodas (Regular and not diet drinks such as Sprite, Pepsi, Coke & Lemonade)
  • Tea/Coffee (NO MILK/CREAM)
  • Nutritional Drinks (Enlive, Ensure Clear)

 Sample Diet Plan

We’ve included the following sample diet plan.


  • 1 glass fruit juice
  • 1 cup coffee or tea (without dairy products)
  • 1 cup broth
  • 1 bowl gelatin


  • 1 glass fruit juice
  • 1 bowl gelatin


  • 1 glass fruit juice
  • 1 glass water
  • 1 cup broth
  • 1 bowl gelatin


  • 1 ice pop (without fruit pulp)
  • 1 cup coffee or tea (without dairy products) or a soft drink


  • 1 cup juice or water
  • 1 cup broth
  • 1 bowl gelatin
  • 1 cup coffee or tea

Myocardial perfusion scan is a medical test that uses a radioactive substance, known as a tracer, to assess the flow of blood to the heart muscle. It produces images of the heart muscle during periods of exercise (or stress) and at rest.

Other terms often used to describe myocardial perfusion scan include: cardiac perfusion imaging, cardiac nuclear imaging, and radionuclide stress test. Based on the specific tracer that’s used, it may also be called Thallium, Cardiolite, or Myoview scan.

By comparing the stress and rest images, doctors identify areas of the heart muscle with reduced blood flow as well as areas that may be scarred from a previous heart attack.

What does the procedure show?

Myocardial perfusion scanning helps doctors diagnose coronary heart disease, which is caused by narrowed or blocked coronary arteries (the vessels that supply blood to the heart muscle). During a cardiac perfusion test, a small amount of tracer is injected into a vein in your arm, once while you exercise, and once at rest.

The tracer travels in the bloodstream and is picked up by the heart muscle. Areas of the heart muscle that have a good supply of blood pick up the tracer right away. Areas that do not have a good supply pick up the tracer very slowly or not at all.

The tracer gives off a small amount of radiation that is detected with a scanning camera. A computer processes the information and produces images that show how radioactivity is distributed in the heart.

If an area of the heart received less blood than the rest of the heart (because of narrowed or blocked artery) it will pick up less radioactivity and will show up as a lighter area, called a “defect”.

One set of images is taken after you exercise, another set is taken while you are at rest. The images allow doctors to compare how much blood flows to the heart muscle during stress and at rest.

Why is the test done?

Most often, myocardial perfusion scanning is done to diagnose coronary heart disease. Your doctor may order this test if you have chest pain, shortness of breath, or any other symptoms that could be related to your heart. In addition, you may be asked to take this test if you have had an abnormal EKG, abnormal treadmill stress test, or other factors.

The test may also be done to determine how severe coronary disease is, to estimate the risk of a future heart attack, and to assess the results of a coronary procedure (such as angioplasty or bypass surgery).

How to prepare

  • Generally you will be instructed not to eat or drink for at least 6 hours before the test. If you have diabetes, take your diabetic medication. You will need to fast for 4 hours before the test.
  • If you take heart or blood pressure medications, check with your doctor when you schedule the test. He or she may ask you to stop certain medications a day or two before the test.
  • The procedure will be explained to you and you will be asked to sign a consent form. Feel free to ask any questions you may have.
  • Please wear a button-down shirt.
  • If you are asked to take the treadmill stress test, please wear athletic or tennis shoes. Clogs, sandals, open-toe or slip-on shoes are not allowed.

What Happens During the Test?

Myocardial perfusion scanning is generally performed at a hospital, test center, or clinic. It may be done on a single day or on two separate days.

Usually, two sets of images are taken. One set is taken after exercise, and another set after a period of rest. Depending on the department’s routine, either the exercise or the rest may be done first.

Stress/Exercise/Chemical Portion

Several electrodes (small sticky patches) will be placed on your chest to monitor your heartbeat during the test. An intravenous (IV) line will be inserted into a vein in your arm, so that the tracer can be injected.

You then walk on a treadmill or a pharmacological agent will be injected through your vein. Be sure to report any symptoms, such as chest pain or discomfort, dizziness, or shortness of breath.

After one hour you will return and lie flat on a special table under a large scanning camera. During imaging, the camera moves slowly in an arc over the front of your chest, taking pictures of your heart from different angles. Remain still while the pictures are being taken. The imaging part of the test takes about 20-30 minutes.

Rest portion

A tracer will be injected one other time, and another set of pictures will be taken while you are at rest. These images are then compared to the images taken during the exercise/stress part of the test.

How Long Does it Take?

Myocardial perfusion scanning can take from 3 to 4 hours. If you are an outpatient, you may be allowed to leave the test area between the two parts of the test. Or, you may be asked to return the next day for more imaging.

Is the test safe?

The radiation exposure during the perfusion scanning is small, and the doses used are safe. However, if your are pregnant, suspect you may be, or are a nursing mother, be sure to let your doctor know.

The exercise test is also safe. A small amount of risk does exist, however, because the heart is stressed. Possible rare complications include abnormal heart rhythms and a heart attack. Trained personnel are there to handle any emergency.

Your test results

Your doctor will discuss the results of the test with you during a future visit. The results help the doctor accurately diagnose your condition and develop a treatment plan that’s best for you.

How should I prepare for the procedure?

You should wear comfortable, loose-fitting clothing for your ultrasound exam. Other preparation depends on the type of examination you will have. For some scans, your doctor may instruct you not to eat or drink for as many as 12 hours before your appointment. For others, you may be asked to drink several glasses of water two hours prior to your exam and avoid urinating, so that your bladder is full when scanning begins.

How is the procedure performed?

You will be positioned on an examination table, and a clear gel will be applied to your abdomen to help the transducer make secure contact with the skin. The sound waves produced by the transducer cannot penetrate air, so the gel helps to eliminate air pockets between the transducer and the skin. The radiologist or sonographer then presses the transducer firmly against the skin and sweeps it back and forth to image the area of interest.

When the examination is complete, you may be asked to dress and wait while the ultrasound images are reviewed, either on film or on a TV monitor.

Frequently, the radiologist or sonographer is able to review the ultrasound images in real time as they are acquired, and you can be released immediately.

What will I experience during the procedure?

Ultrasound imaging of the abdomen is fast, easy and painless. There may be varying degrees of discomfort from pressure as the radiologist or sonographer guides the transducer over your abdomen, especially if you are required to have a full bladder. The examination usually takes less than 30 minutes.

Who interprets the results?

A radiologist, who is a doctor experienced in ultrasound and other imaging examinations, will analyze the images and send a signed report with his or her interpretation to your primary care physician.

How do I get my results?

Your doctor’s office will tell how to obtain your results. At some facilities, new technology also allows for distribution of diagnostic reports and referral images over the Internet.

When you arrive at the lab, sign in at the front desk.

Check in

When you visit one of our lab draw stations or the main lab, you’ll need to check in at the front desk to let us know you’ve arrived.

We’ll check on your order, and we may ask you to fill out some paperwork before you see one of our phlebotomists. Let us know if you have allergies, are on blood thinners and are prone to fainting.

Submitting a sample

Let our staff know about allergies, medications or if you are prone to fainting.

The phlebotomist will call your name and lead you to an area where your labs will be drawn. You’ll be asked for a sample of body fluid, depending on the test that has been ordered, and we’ll explain the process as thoroughly as possible before performing the draw.

We’ll also do our best to make sure that your labs are drawn as safely and privately as possible.

Please be aware that during your blood draw you may encounter discomfort and slight bruising at the injection site.

Please let the phlebotomy staff know:

  • If you are allergic to latex
    We do not have access to your medical record and will not know of any know allergies ahead of time.
  • If you are prone to fainting, or are not feeling well the day you are being drawn 
    We have a reclining chair we can draw you in. Some people encounter light-headedness and dizziness when watch someone draw their blood.
  • If you are on any blood thinners such as coumadin or aspirin 
    You may take longer to stop bleeding; the phlebotomist needs to know to apply pressure longer.

Care instructions

When we’ve finished collecting a specimen, we’ll let you know if there are any additional steps you need to take. For example, we may advise you to avoid lifting heavy objects or exercising if you’ve submitted a blood sample.

Thanks for visiting!

Before the ultrasound and /or biopsy

  • Stop taking all aspirin products and non-steroidal antiinflammatories such as Aleve, Motrin, Advil, and Tylenol one week prior to and one week after your appointment. If you currently take Plavix, Coumadin, or Ticlid, please discontinue for one week after receiving authorization from your prescribing physician.
  • Consume a clear liquid diet the 2 meals prior to your appointment. If your biopsy is scheduled in the morning, have clear liquids for dinner the previous night and for break fast the day of your biopsy. If your biopsy is scheduled in the afternoon, have clear liquids for breakfast and lunch that day.
  • Administer the Fleets enema the evening prior to your appointment.
  • Take the antibiotic as instructed. If you were given Levaquin, please take one tablet the day before your procedure, one tablet the morning of the biopsy, and one the day after the procedure
  • Arrive for your appointment prepared to provide a urine sample. You may choose to collect a sample at home the morning of your procedure. If you choose to do so, please keep the urine sample refrigerated until you leave for your appointment.

Post Prostate Ultrasound and/or Biopsy Instructions

  • Notify physician or go to the Emergency Room for:
  • Fever Greater than 101.4
  • Chills
  • Significant Bleeding per Rectum
  • Problems Urinating

Your results will be given to you at your follow-up visit. Please come to your follow-up appointment accompanied by a friend or spouse. If you have any questions, please feel free to call our office.

Find your doctor and download preparations and post-perative instructions for the procedure you will be undergoing.

Dr. Buzad

Dr. Corne

Dr. Brown

Before The Procedure:

  • Stop taking all aspirin or blood thinning products one week prior to your vasectomy
  • Arrange to rest and be off from work for 2-3 days after the vasectomy.

The Day of the Vasectomy:

  • Carefully shave all of the hair from the scrotum
  • Wear or bring close-fitting underwear that will support the scrotum
  • Be sure to have someone drive you home from the procedure.

Post-Vasectomy Instructions:

  • Wear close-fitting underwear for 2-3 days to hold the bandages in place
  • Place an icepack on your scrotum to minimize swelling during the first 24 hours (30 minutes on/30 minutes off).
  • Take pain medication as needed.
  • You may take showers beginning the day after the procedure, but avoid soaking the scrotum in baths, swimming pools or hot tubs until the sutures completely dissolve (usually 10 days).
  • Limit activity for the first 48 hours following procedure, avoid any heavy lifting, pushing or straining.

General Expectations:

You can expect some bruising and redness at the site of the incision. The sutures in your incision will dissolve and fall out within 5-10 days. There may be some yellow or white discharge from the incision as the sutures dissolve, this is normal. You may notice a small open gap at the site of the incision after the sutures fall out, this is normal and will close up over time. You may notice some firmness in and around the incision site, it will soften, flatten and return to normal within a few weeks.

Follow-Up Semen Test:

A vasectomy does not make you immediately infertile, it takes 6-8 weeks (30-40 ejaculations) for all the sperm to leave your body. Instructions will be provided the day of your procedure for follow up semen testing.



Contact our office immediately if you experience any of the following complications:

  • Temperature (taken by mouth) above 101.5°F
  • Significant increase in scrotal size
  • Redness or swelling that does not subside
  • Difficulty urinating
  • Blood spot on the dressing larger than a dime

man listening to instructions


  • Call your doctor if you develop a cold, infection or fever or develop other medical problems. Before your scheduled procedure, ask your doctor to write prescriptions for any medications you will be required to take following your procedure. You should try to fill these prescriptions before your procedure so that you have them on hand.
  • The night before your procedure, you may eat and drink as usual. However, do not take anything by mouth after 12:00 midnight the night before.
  • Wear comfortable, loose-fitting clothing on the day of your procedure.
  • Bring a list of all the prescription and nonprescription medications that you take regularly with you on the day of the procedure.
  • Please plan to arrive two hours prior to your treatment. Remember that you will need to spend some time after the procedure to recover from anesthesia prior to being discharged.
  • Arrange for transportation home; you may not drive or operate dangerous equipment for 48 hours after the procedure. If your doctor has indicated that you will need to stay over night in the facility, be sure to arrange for someone to pick you up the next morning.


Please take the medications as prescribed by your doctor. Finish the entire antibiotic prescription. Take pain medication as directed by your doctor. Tylenol or nonsteroidal anti-inflammatory medications (such as Aleve®) should relieve mild pain and discomfort. Resume the usual medications you took before surgery unless instructed otherwise. Do not take blood thinners or aspirin products for two weeks or as directed by your physician.


Take it easy for the first 48 hours after the procedure. Do not drive or operate dangerous equipment for 48 hours following anesthesia.You may be able to resume non-strenuous activities after 48 hours unless otherwise directed by your physician. Avoid strenuous exercise, heavy lifting greater than 20 pounds, bike riding, and yard work for two weeks, as the vibrations and movement may cause bleeding. No sexual activity for two weeks after surgery.


You may need a catheter to drain your bladder, depending upon how much swelling you experience after the procedure. Catheters are usually removed within 24 to 48 hours in the urology clinic. Wash around the catheter with soap and water and rinse well. You may shower, but avoid baths until the catheter is removed.


Avoid coffee, tea, carbonated beverages, alcoholic beverages, citrus juices, spicy foods and smoking for the first week following surgery. Increase your intake of fluids, particularly water – 24 to 48 ounces over your usual daily fluid intake is typically recommended.


Do not strain when having a bowel movement. Expect irregular bowel habits until fully recovered. Increase fiber in your diet. You may need a stool softener or laxative during the first two weeks of your recovery.


You may experience urinary urgency and/or frequency for the first month following surgery. This is normal. Talk to your doctor to discuss medications that may relieve this. You may have a small amount of bleeding with urination on occasion. This may be accompanied with small blood clots. This is normal, and should be relieved by increasing your fluid intake. You may experience some mild burning and discomfort during urination. This is normal and should subside in one to two to four weeks.


Please call the office immediately if you experience any of the following symptoms:

  • Bright red bleeding in urine with a heavy blood clot.
  • Fever over 101º F (38°C).
  • Inability to urinate for more than 4 hours.
  • Feeling of bladder fullness that does not go away after urinating.
  • Severe pain at any time.
  • If you have any questions regarding your preparation for or recovery from the PVP procedure.

You’ve scheduled your mammogram – now what should you do? There a just a few simple steps you need to take.

  1. If you are a new patient, you should request any previous mammograms from other facilities and bring them with you.
  2. On the day of your mammogram, wear two-piece, comfortable clothing. You’ll need to remove your top and bra for the examination.
  3. Refrain from using deoderant, lotions or powders around your breasts or under your arms. These substances can contain metals that can look like spots on your mammogram and make the images harder to read.

Download the preparation instructions for the procedure you will be undergoing.  These preparations are used by all ADC Gastroenterology health professionals.

Questions about your upcoming colonoscopy?


Endoscopy procedure preparation

Location: ADC Lakewood, 7600A  South Capital of TX HWY 360, Austin, TX 78731 

Important Phone Numbers:

Preparation Instructions:

  • Nothing by mouth after midnight, unless prep instructions state otherwise.
  •  If you are scheduled in the afternoon, you may have clear liquids until 6 hours prior to the test.  Exception: Medications may be taken with a sip of water only.
  • Please take routine medications with a sip of water the morning of your procedure, unless indicated otherwise by your doctor or nurse.
  •  Please remember to arrange for a responsible adult to stay with you during your procedure and to drive you home. If you do not have a responsible adult your procedure will be cancelled and rescheduled. If you need additional assistance please call the Gastroenterology office at (512) 901-4007.

Clear liquids include:

  • Black coffee (no creamer/dairy allowed)
  • Tea
  • Clear fruit juices (apple or white grape) *
  • Bouillon
  • Gelatin dessert (Jello) *
    * Do not eat or drink anything colored red or purple


There will be a $75 charge if you cancel your procedure within 3 business days of your scheduled date.

New patients receive an audiological evaluation to determine the status of their hearing and middle ear system.

If there is diminished hearing, another test will determine what part of the hearing mechanism is responsible. Unless other arrangements have been made, payment for services is requested at time of visit.

Many audiology services are covered by insurance.

There is no paperwork to fill out prior to your visit.

Getting your allergy shots at ADC

Our allergy department mixes its own vaccine for allergy shots. We work with several outside clinics and doctors to provide serum for injections.   You are required to stay an additional 30 minutes to one hour following your injection so that an ADC provider can monitor your reaction (or non-reaction) to your allergy shot.

Shots are administered on a first come, first serve basis at the North Clinic, Circle C and Steiner Ranch.

Please call the Injection Clinic Hotline before you visit any clinic for your allergy shot.  In case of an unexpected office closure, a message will be posted on this line.

Injection Clinic Hotline: 512-901-7022

For the most up-to-date injection schedule please call the hotline.  The hotline is updated regularly.

Injection clinic hours

North Clinic

Monday, Wednesday and Thursday: 8:30am – 5pm
Tuesday: 7:30am – 5pm
Friday: 7:30am – 4:15pm

Circle C Clinic

Monday, Wednesday, Thursday and Friday: 8:30am – 4:30pm
Thursday and Friday: 8:30am -1:00pm and 2:00-4:30pm

Steiner Ranch

Tuesday and Thursday: 8:30am -5:00pm