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Pre-operative Clearance

Jeffery Tun, MD

Primary Care Physician located in Midtown East, New York, NY & Forest Hills, NY

A pre-operative evaluation assures your surgeon that you’re healthy enough for surgery. At his office in Midtown East, Manhattan in New York City, internist Dr. Tun performs pre-operative clearance exams to prepare you for your proposed procedure. If you need a pre-operative exam before surgery, call Jeffrey Tun, MD, now or schedule an appointment online.

Pre-operative Clearance Q & A

What is pre-operative clearance?

If Dr. Tun or a specialist recommends surgery to treat an underlying disease or injury, a comprehensive pre-operative exam is necessary before the procedure. Pre-operative clearance doesn’t necessarily “clear” you for surgery. Instead, the evaluation identifies any risk factors you have that may interfere with the procedure itself or your recovery.

A pre-operative clearance exam allows Dr. Tun and your health care team to implement preventive measures to protect you during surgery should you need them. Sometimes, a pre-operative exam may exclude you from surgery to protect your health.

Why would I need pre-operative clearance?

A pre-operative clearance exam isn’t always necessary. If you’re in good health and undergoing a minor procedure, you may be able to skip pre-operative clearance. 

The American Society of Anesthesiologists’ (ASA’s) Physical Status Classification System classifies otherwise healthy individuals as ASA I or II, meaning they don’t require pre-operative clearance before surgery. 

However, those classified as ASA III and above — patients with comorbidities, like diabetes, cardiovascular disease, or hypertension — always require pre-operative clearance. If your surgeon requests pre-operative clearance, Dr. Tun can perform your exam at one of his New York City offices.

What happens at a pre-operative clearance exam?

During your pre-operative clearance evaluation, Dr. Tun performs a head-to-toe physical exam. Other tests he may perform to assess your fitness for surgery include:

Chest X-rays

A chest X-ray can help investigate symptoms, such as shortness of breath, abnormal heart rate, or chest pain. Understanding the cause of these symptoms is essential to prevent complications during surgery.

Electrocardiogram (EKG)

An EKG records the electrical impulses in your heart to diagnose arrhythmias, blocked arteries, and whether you’ve suffered a previous heart attack.

Blood test

A comprehensive blood panel measures your red and white blood count, glucose, potassium levels, and more.


Urinalysis before surgery allows Dr. Tun to detect kidney disease, infections, and any drugs you may have in your system.

To gather additional information, Dr. Tun may also order blood work and imaging scans, such as X-rays or ultrasounds.


To learn more about pre-operative clearance, call Jeffrey Tun, MD, or schedule an appointment online today.