
Nearly 50 million surgeries happen every year in the United States. This shows how big a role medical interventions play in healthcare today.invasive treatment examplesSolid Tumor Treatment Guide
There are many medical procedures that are invasive. They involve making cuts or putting instruments inside the body. These include surgical interventions, biopsies, and other treatments to find and fix health problems.
Invasive treatments are key in dealing with serious health issues. They give doctors the tools to diagnose and treat problems well. Knowing about these procedures helps patients make smarter choices about their health.
Key Takeaways
- Millions of surgical procedures are performed annually in the U.S.
- Invasive treatments involve entering the body through incisions or instrument insertion.
- Examples include surgical interventions, biopsies, and interventional therapies.
- These procedures are vital for diagnosing and treating various medical conditions.
- Understanding invasive treatments can help patients make informed healthcare decisions.
Understanding Invasive Medical Procedures

It’s key for both patients and doctors to know about invasive medical procedures. These are treatments that go into the body, like through surgery or with tools inserted inside.
These treatments are sorted by their goal, how invasive they are, and the tech used. We’ll look at these groups to get a clearer picture of the different invasive treatments out there.
Definition of Invasive Treatments
Invasive treatments need to go into the body, either through cuts or natural openings. They’re used when other, less invasive methods won’t work.
Key traits of invasive treatments are:
- They go into the skin or an organ.
- They use surgical tools or devices.
- They might carry more risks than non-invasive options.
Classification of Invasive Procedures
Invasive procedures are grouped by how invasive they are and their purpose.
The main groups are:
- Major Surgical Interventions: These are big surgeries with big cuts and long recovery times.
- Minor Invasive Procedures: These have smaller cuts or use less invasive methods, leading to faster recovery.
- Minimally Invasive Surgery: This uses new tech to make cuts smaller and damage less tissue.
Knowing these groups helps us see the wide range of invasive treatments and their roles in today’s medicine.
Comprehensive Invasive Treatment Examples in Modern Medicine

Modern medicine uses many invasive treatments. These range from complex surgeries to simple procedures. They help treat many health issues across different medical fields.
Invasive treatments are key in healthcare. They offer effective solutions for many health problems. This variety lets doctors tailor treatments to each patient’s needs.
Major Surgical Interventions
Major surgeries are big operations that need a lot of time to recover. They can save lives or greatly improve a patient’s life quality.
- Organ transplantations, like kidney or liver transplants, replace a sick organ with a healthy one from a donor.
- Open-heart surgeries, like coronary artery bypass grafting (CABG), fix or replace heart valves and bypass blocked arteries.
- Neurosurgical procedures, such as brain tumor removals or aneurysm clipping, are precise and often life-saving.
These big surgeries happen in hospitals with a team of doctors and nurses.
Surgical Interventions: The Most Recognized Invasive Treatments
Surgical interventions are key in modern medicine. They solve complex health problems. These procedures can save lives and greatly improve patients’ quality of life. We’ll look at the different types of surgeries, their importance, and the conditions they treat.
Open Heart Surgery
Open heart surgery is a major procedure. It involves opening the chest to work on the heart. It’s used for heart issues like coronary artery disease and heart valve problems.
During surgery, the patient is on a heart-lung machine. This machine takes over the heart and lungs’ work. This lets the surgical team operate on a stopped heart. The surgery is complex and risky. It needs a skilled team and top-notch facilities.
Organ Transplantation
Organ transplantation is a major surgery. It replaces a sick or damaged organ with a healthy one from a donor. This can be a lifesaver for those with failing organs.
The most common transplants are for kidneys, livers, hearts, and lungs. Success depends on donor and recipient match, surgical skill, and post-op care.
Joint Replacement Procedures
Joint replacement surgery replaces a damaged or arthritic joint with an artificial one. It’s often done on hips, knees, and shoulders. It can greatly reduce pain and improve mobility for those with severe arthritis or joint injuries.
Thanks to better surgery techniques and prosthetics, joint replacement is very successful and common.
In conclusion, surgeries like open heart surgery, organ transplantation, and joint replacement are vital in healthcare. They save lives and greatly enhance the quality of life for many patients around the world.
Minimally Invasive Surgery: A Revolutionary Approach
Minimally invasive surgery started as a way to make medical procedures less invasive. It has grown into a major change in how we do surgery. This section looks at the details of this surgery, including its methods and benefits over old ways of doing surgery.
Laparoscopic Procedures
Laparoscopic surgery, or keyhole surgery, uses small cuts for a camera and tools. It’s used for things like removing the gallbladder and fixing hernias. It leads to less pain, shorter stays in the hospital, and less scarring.
A famous surgeon said, “Laparoscopic surgery has changed how we do surgery, helping patients get back to their lives faster.” Many studies agree, showing its many benefits.
Robotic-Assisted Surgery
Robotic-assisted surgery is a big step forward in minimally invasive surgery. It lets surgeons do complex tasks with more precision and control. Robotic systems give surgeons better vision and dexterity, opening up more possibilities for less invasive surgery.
Benefits Over Traditional Open Surgery
Minimally invasive surgery has many advantages over traditional surgery. Patients face less damage, lower infection risks, and heal faster. They also get to leave the hospital sooner and get back to their lives faster. As we keep improving, we’ll see even better care for patients.
“The move to minimally invasive surgery is more than a trend; it shows our dedication to the best care for our patients,” said a top medical expert. This shows how important it is to use the latest treatments that focus on patient health.
In summary, minimally invasive surgery shows the progress in medical tech and surgery skills. As we keep innovating, we’ll keep improving surgery for the future.
Cardiovascular Invasive Treatment Examples
Invasive medical treatments are key in fighting heart diseases. They help diagnose and treat heart and blood vessel issues. These treatments can be life-saving.
There are many types of invasive treatments for the heart. Each one has its own use and benefits. We’ll look at some of the most important ones.
Cardiac Catheterization
Cardiac catheterization is a procedure that checks the heart. A thin tube, called a catheter, is put into a blood vessel. It then goes to the heart.
This lets doctors see how well the heart is working. They can check blood flow and the state of the heart’s arteries.
- Diagnosing coronary artery disease
- Assessing heart valve function
- Measuring blood pressure and oxygen levels in the heart chambers
Angioplasty and Stent Placement
Angioplasty opens up blocked arteries. A stent is then put in to keep the artery open. This helps blood flow to the heart muscle.
Key benefits include:
- Minimally invasive with less recovery time compared to open surgery
- Effective in relieving symptoms of coronary artery disease
- Can be performed in conjunction with other diagnostic procedures like cardiac catheterization
Pacemaker Implantation
A pacemaker is a small device that helps control the heartbeat. It’s used for abnormal heart rhythms. It makes sure the heart beats at the right rate.
The procedure involves:
- Implanting the pacemaker generator under the skin
- Guiding the pacemaker leads through a vein to the heart
- Testing the pacemaker to ensure it’s working correctly
These treatments show how far cardiovascular medicine has come. They offer effective ways to manage heart conditions. As technology gets better, we’ll see even more progress in treating heart disease.
In conclusion, treatments like cardiac catheterization, angioplasty with stent placement, and pacemaker implantation are essential. They are key parts of modern heart care. They give patients important ways to manage heart disease.
Neurosurgical Invasive Procedures
Neurosurgery includes many invasive procedures for brain and spinal cord issues. These advanced treatments are key for complex neurological problems.
Brain Surgery Types
Brain surgery is a major part of neurosurgery. It uses different methods to treat issues like tumors, aneurysms, and AVMs.
- Craniotomy: A surgery where a skull bone flap is removed to access the brain.
- Stereotactic Surgery: A minimally invasive method using a 3D coordinate system to find small targets in the body.
- Endoscopic Surgery: A procedure where a tube with a camera and light is inserted into the brain to remove tumors or lesions.
Spinal Cord Interventions
Spinal cord interventions are essential for treating spinal injuries, herniated discs, and spinal stenosis.
- Spinal Decompression Surgery: A procedure to relieve pressure on the spinal cord or nerves.
- Spinal Fusion: A surgery that joins two or more vertebrae together to stabilize the spine.
- Microdiscectomy: A minimally invasive procedure to remove herniated disc material pressing on a nerve.
|
Procedure |
Description |
Conditions Treated |
|---|---|---|
|
Craniotomy |
Surgical operation to access the brain |
Tumors, aneurysms, AVMs |
|
Spinal Decompression |
Relieve pressure on spinal cord or nerves |
Spinal stenosis, herniated discs |
|
Deep Brain Stimulation |
Implanting electrodes to stimulate brain areas |
Parkinson’s disease, dystonia, OCD |
Gastrointestinal Invasive Treatments
Invasive procedures are key in diagnosing and treating stomach and bowel issues. They help manage many conditions, improving patients’ lives and health.
Endoscopic Procedures
Endoscopic procedures are vital for diagnosing and treating stomach and bowel problems. These methods are non-invasive, allowing us to see inside the stomach and bowel. We can also take samples and perform treatments.
Common Endoscopic Procedures:
- Gastroscopy
- Colonoscopy
- Endoscopic Retrograde Cholangiopancreatography (ERCP)
- Endoscopic Ultrasound (EUS)
Colorectal Surgery
Colorectal surgery treats problems in the colon and rectum. These surgeries can be done in different ways, depending on the case.
|
Condition |
Surgical Intervention |
Benefits |
|---|---|---|
|
Colorectal Cancer |
Colectomy |
Removal of cancerous portion of the colon |
|
Diverticulitis |
Sigmoidectomy |
Relief from diverticulitis symptoms |
|
Rectal Prolapse |
Rectopexy |
Correction of rectal prolapse |
Bariatric Surgery Options
Bariatric surgery helps people with obesity lose weight and improve their health.
Types of Bariatric Surgery:
- Roux-en-Y Gastric Bypass
- Sleeve Gastrectomy
- Adjustable Gastric Banding
These treatments show how far medical science has come. They offer effective solutions for many stomach and bowel problems.
Orthopedic Invasive Procedures
Surgical interventions are key in orthopedics. They tackle complex bone and joint issues that can’t be fixed with just treatments. Orthopedic surgery includes many procedures, like fixing fractures and doing spinal fusions. These aim to fix function, ease pain, and boost life quality for patients.
Fracture Repair Surgeries
Fracture repair surgeries are vital for severe bone fractures. They involve setting the bone right and holding it in place with plates, screws, or rods. The goal is to fix the bone so it can heal and function normally again.
We use the latest techniques and tools for precise and stable fixation. For example, intramedullary nailing is used for long bone fractures. It’s a minimally invasive method that causes less damage to soft tissues.
Arthroscopic Interventions
Arthroscopic interventions are a minimally invasive way to diagnose and treat joint problems. A small camera (arthroscope) and special tools are used through tiny cuts. This lets surgeons see inside the joint and make repairs without big cuts.
These procedures are great for sports injuries or degenerative joint conditions. They offer faster recovery and less pain compared to open surgery.
Spinal Fusion Techniques
Spinal fusion techniques treat spinal disorders like degenerative disc disease and scoliosis. The procedure joins vertebrae together with bone grafts and rods and screws.
Today’s spinal fusion methods are less invasive, leading to quicker recovery. The right method depends on the patient’s condition, health, and the surgeon’s expertise.
|
Procedure |
Description |
Benefits |
|---|---|---|
|
Fracture Repair |
Realignment and stabilization of bone fractures |
Proper healing, restored function |
|
Arthroscopic Interventions |
Minimally invasive joint diagnosis and treatment |
Less pain, quicker recovery |
|
Spinal Fusion |
Joining vertebrae to stabilize the spine |
Relief from spinal disorders, improved stability |
Gynecological and Reproductive Invasive Treatments
Invasive treatments are key in dealing with gynecological and reproductive health issues. They help diagnose and treat various conditions affecting women’s health.
Hysterectomy Procedures
A hysterectomy removes the uterus. It’s often done for uterine fibroids, endometriosis, or cancer. There are different types, each suited for specific needs.
Choosing to have a hysterectomy is a big decision. It’s important to talk about the risks and benefits with a doctor. The right procedure depends on the condition, health, and other factors.
Cesarean Section Delivery
A cesarean section, or C-section, is when a baby is born through abdominal and uterine incisions. It’s needed when a vaginal delivery isn’t safe or possible.
We know a C-section is a big surgery. It’s a lifesaver but comes with risks. Following post-op care is key for a smooth recovery.
Fertility-Related Interventions
Fertility treatments help people conceive. Procedures like in vitro fertilization (IVF) and other assisted reproductive technologies (ART) are used.
We offer full care for those seeking fertility treatments. Our team works with patients to create personalized plans.
Urological Invasive Procedures
We use advanced urological invasive procedures to diagnose and treat urinary tract disorders. These medical interventions are key for treating various urological conditions. They greatly impact patients’ quality of life.
Prostate Surgeries
Prostate surgeries treat conditions like prostate cancer and benign prostatic hyperplasia (BPH). Robotic-assisted prostatectomy is a modern method that offers precision and quick recovery. The choice of surgery depends on the patient’s condition, age, and health.
The table below summarizes common prostate surgeries and their characteristics:
|
Surgical Procedure |
Description |
Recovery Time |
|---|---|---|
|
Robotic-Assisted Prostatectomy |
Minimally invasive surgery using robotic assistance |
1-2 weeks |
|
Open Prostatectomy |
Traditional open surgery for prostate removal |
4-6 weeks |
|
Transurethral Resection of the Prostate (TURP) |
Minimally invasive procedure to relieve BPH symptoms |
1-3 weeks |
Kidney Stone Removal Techniques
Kidney stones are treated with different invasive procedures based on size, location, and health. Shock wave lithotripsy is a non-invasive method that breaks stones into smaller pieces. For larger stones, percutaneous nephrolithotomy may be needed, involving a small incision to remove the stone.
Bladder and Urinary Tract Interventions
Surgeries for the bladder and urinary tract include repairing or removing damaged parts. Cystectomy involves removing part or all of the bladder, often for bladder cancer. These interventions may also include reconstructive surgery to improve function and reduce complications.
These urological invasive procedures are vital for treating complex conditions. They improve the quality of life for patients with urinary tract disorders.
Oncological Invasive Treatments
In oncology, treatments like surgery are key for fighting cancer. We’ll look into how these methods help manage cancer.
Tumor Resection Surgeries
Tumor resection surgeries aim to remove cancerous tumors. The goal is to take out the tumor and some healthy tissue around it. This helps ensure all cancer cells are gone.
Types of Tumor Resection:
- Wide excision: Removing the tumor and a lot of surrounding tissue.
- Simple excision: Taking out the tumor with a little surrounding tissue.
- En bloc resection: Removing the tumor and nearby structures or tissues.
Lymph Node Dissection
Lymph node dissection removes one or more lymph nodes. It’s done to see if cancer has spread.
|
Procedure |
Description |
Purpose |
|---|---|---|
|
Sentinel Lymph Node Biopsy |
Removing the first lymph node to which cancer cells are likely to spread |
To determine if cancer has spread |
|
Axillary Lymph Node Dissection |
Removing lymph nodes in the armpit |
To treat or prevent cancer spread |
Invasive Diagnostic Procedures
Invasive diagnostic procedures are key for diagnosing and staging cancer. They involve going into the body to get tissue or fluid samples.
Examples include:
- Biopsies: Removing tissue or cells for examination.
- Fine-needle aspiration: Using a thin needle to collect cell samples.
- Core needle biopsy: Using a larger needle to collect tissue samples.
These treatments and procedures are essential in cancer care. They give vital info for treatment plans and can help improve patient outcomes.
Image-Guided Invasive Procedures
Image-guided invasive procedures are a big step forward in medicine. They use advanced imaging to guide treatments, making them more precise and safe.
These procedures are changing how we treat patients. They help doctors make accurate diagnoses and treat conditions more effectively.
CT-Guided Interventions
CT-guided interventions use computed tomography for real-time imaging. This helps doctors target areas with high accuracy, lowering the risk of problems.
- Biopsies: CT-guided biopsies help get tissue samples accurately, helping diagnose many conditions.
- Drainage Procedures: CT helps in removing fluid or abscesses by guiding the procedure.
Ultrasound-Guided Procedures
Ultrasound-guided procedures use sound waves for real-time images. It’s great because it’s portable and doesn’t use harmful radiation.
Some uses include:
- Regional Anesthesia: Ultrasound makes regional anesthesia more accurate, helping with pain.
- Vascular Access: Ultrasound helps get to blood vessels safely, reducing risks.
MRI-Guided Treatments
MRI-guided treatments use magnetic resonance imaging for soft tissue detail. This is great for procedures needing clear soft tissue images.
“MRI-guided interventions offer unparalleled precision, specially in neurosurgical and oncological applications.”— Expert in Interventional Radiology
The benefits of MRI-guided treatments are:
- High Precision: MRI gives detailed images for precise treatment targeting.
- Real-Time Monitoring: MRI lets doctors watch the procedure live, making it safer and more effective.
In conclusion, image-guided procedures are changing medicine. With CT, ultrasound, and MRI, we can offer safer, more precise treatments. This improves patient care and outcomes.
Patient Considerations for Invasive Treatment Examples
Before choosing invasive treatments, patients need to think about several important things. These factors can greatly affect their choices and how they feel during treatment.
Informed Consent Process
The informed consent process is key before starting invasive treatments. It’s a detailed talk between the patient and doctor about the treatment. Patients must know what they’re agreeing to, so they’re fully aware of their treatment.
Patients should ask about the treatment, the doctor’s team, and what recovery will be like. This talk builds trust and makes sure patients are okay with their treatment plan.
Pre-Operative Preparation
Getting ready for surgery is very important for a good treatment experience. Patients usually get specific instructions on how to prepare. This might include what to eat, changing medications, and making lifestyle changes.
|
Pre-Operative Instruction |
Purpose |
|---|---|
|
Dietary Restrictions |
To minimize risks during surgery |
|
Medication Adjustments |
To avoid complications related to anesthesia or bleeding |
|
Lifestyle Changes |
To improve overall health and recovery prospects |
Financial and Insurance Considerations
Invasive treatments can be expensive, so patients worry about money and insurance. Knowing the costs and what insurance covers can help reduce stress.
Patients should check their insurance to see what’s covered and what they’ll have to pay for. Talking to the billing department can also help find out about payment plans or help programs.
Thinking carefully about these points helps patients make good choices about their care. This way, they’re ready for the treatment process.
Risks and Complications of Invasive Treatments
Invasive medical procedures can greatly help, but they also have risks. It’s important to know the possible dangers when looking at different treatments.
Common Surgical Complications
Surgeries are often needed but come with risks. These include infection, bleeding, and bad reactions to anesthesia. Infection can make recovery longer and require more treatment. Bleeding after surgery needs close watch.
|
Complication |
Description |
Mitigation Strategies |
|---|---|---|
|
Infection |
Bacterial or viral infection at the surgical site |
Prophylactic antibiotics, sterile technique |
|
Bleeding |
Excessive bleeding during or after surgery |
Careful hemostasis, monitoring of vital signs |
|
Adverse Reaction to Anesthesia |
Allergic reactions or complications from anesthesia |
Thorough pre-anesthetic assessment, monitoring |
Anesthesia-Related Risks
Anesthesia is key in many surgeries but has risks. These include allergic reactions, breathing problems, and post-operative nausea and vomiting. Good pre-surgery checks and watching closely can lessen these risks.
Long-Term Consequences
Some treatments can lead to long-term issues. These include chronic pain, limited movement, or more surgeries. Knowing these long-term effects helps patients make better choices.
Patients should know the risks of invasive treatments to make better choices. Doctors should talk about these risks and how to avoid them with patients.
Recovery and Rehabilitation After Invasive Procedures
Invasive medical treatments need a detailed recovery plan for the best results. This plan is made just for the patient, based on their needs and the type of treatment they had.
Immediate Post-Operative Care
Right after the treatment, the focus is on managing pain and watching for any problems. Effective pain management is key, using both medicines and other methods.
Patients stay in a recovery room until they’re ready to go to a regular hospital room or home. They get clear instructions on how to care for themselves after surgery.
Long-Term Recovery Considerations
After the first few days, long-term care is important. This includes wound care and managing any lasting side effects. It’s also about slowly getting back to normal activities.
Following a personalized recovery plan helps a lot. It reduces the chance of problems and improves how well you recover.
Physical Therapy and Rehabilitation
Physical therapy and rehabilitation are key for many patients. They help regain strength and mobility after surgery. A custom rehab plan can help you get back to your usual activities or adjust to any changes.
- Physical therapy focuses on specific areas to improve outcomes.
- Rehab programs often include many professionals, like physiotherapists and occupational therapists.
By using a complete recovery and rehab plan, we can greatly improve patients’ lives after invasive treatments.
Alternatives to Invasive Treatments
The world of medicine is changing fast. Now, we focus more on non-invasive and minimally invasive treatments. These new methods can offer the same benefits as surgery but with less risk and quicker healing.
Non-Invasive Medical Options
Non-invasive treatments don’t need cuts or incisions. They include:
- Medication Therapies: Many conditions can be treated with medicines. These can reduce symptoms or cure the problem.
- Physical Therapy: For some muscle and bone issues, physical therapy is a good choice. It helps restore function and lowers pain.
- Lifestyle Changes: Changing your diet, exercising, and managing stress can also help. They play a big role in managing or preventing some diseases.
Minimally Invasive Alternatives
Minimally invasive treatments use smaller cuts than regular surgery. They cause less damage, less pain, and faster healing. Examples are:
- Laparoscopic Surgery: This method uses small cuts. A camera and tools are inserted to do the surgery.
- Robotic-Assisted Surgery: It’s like laparoscopic surgery but with more precision and flexibility thanks to robotic systems.
- Endoscopic Procedures: These use a flexible or rigid tube with a camera and tools. They go through a small cut or natural opening.
Complementary and Alternative Approaches
Complementary and alternative methods can be used with or instead of regular treatments. They include:
- Acupuncture: This ancient Chinese method uses thin needles to relieve pain and symptoms.
- Herbal Medicine: Some herbs have been studied for treating health issues. But, their effectiveness can vary.
- Mind-Body Therapies: Practices like meditation, yoga, and cognitive-behavioral therapy can help manage symptoms and improve life quality.
Exploring these alternatives helps patients and doctors find the best treatment plan. It’s one that fits the individual’s needs and preferences.
Conclusion: The Future of Invasive Medical Treatments
The world of invasive medical treatments is changing fast. New technology and techniques are leading the way. These changes are making patient care better and outcomes more positive.
Now, we’re seeing more minimally invasive surgeries. These surgeries help patients recover faster and have fewer problems. Robotic-assisted surgery and image-guided interventions are making treatments even more precise and effective.
Looking ahead, we expect even more new ideas in interventional procedures. The future looks bright, with possibilities in personalized medicine and regenerative therapies. Healthcare providers will be able to offer the latest and best treatments to patients.
FAQ
What is an invasive treatment?
An invasive treatment is a medical procedure that goes into the body. It uses tools to diagnose or treat a condition. This happens through the skin or an opening in the body.
What are some examples of invasive medical procedures?
Invasive medical procedures include surgeries like open heart surgery and organ transplants. They also include minimally invasive surgeries like laparoscopy and arthroscopy. Diagnostic procedures like cardiac catheterization and endoscopy are also examples.
What are the benefits of minimally invasive surgery?
Minimally invasive surgery has many benefits. It uses smaller cuts, causing less damage and pain. Patients often have shorter hospital stays and recover faster than with traditional surgery.
What are the risks associated with invasive treatments?
Invasive treatments can have risks. These include infections, bleeding, and scarring. There are also risks from anesthesia and long-term effects like adhesions or chronic pain.
How can patients prepare for invasive treatments?
Patients should prepare by understanding the informed consent process. They should also follow pre-operative instructions and consider financial and insurance matters.
What is the role of imaging technologies in invasive procedures?
Imaging technologies like CT, ultrasound, and MRI are key in invasive procedures. They help guide the procedure, ensuring precision and reducing complications.
Are there alternatives to invasive treatments?
Yes, there are alternatives. These include non-invasive treatments and minimally invasive options. Some patients may also choose complementary or alternative approaches.
What is the recovery process like after invasive procedures?
Recovery after invasive procedures involves immediate care and long-term considerations. It often includes physical therapy to help regain function and improve outcomes.
Can invasive treatments be used for cancer management?
Yes, invasive treatments are vital in cancer management. They include surgeries to remove tumors and diagnostic procedures to stage and treat cancer.
What are some examples of invasive treatments for cardiovascular diseases?
Invasive treatments for heart diseases include cardiac catheterization and angioplasty. Pacemaker implantation is also used to manage conditions like coronary artery disease and arrhythmias.
How do invasive treatments vary across different medical specialties?
Invasive treatments vary by medical specialty. Each field, like cardiovascular, neurosurgery, and orthopedics, has its own procedures and outcomes. This depends on the condition being treated.
Centers for Disease Control and Prevention. Evidence-Based Medical Insight. Retrieved from https://www.cdc.gov/nchs/fastats/surgical-procedures.htm