Intravenous Antimicrobial Therapy (OPAT)

Outpatient IV Antibiotic Treatment in Colorado

Some infections require stronger treatment than oral medications alone. With Outpatient Parenteral Antimicrobial Therapy (OPAT), patients can safely receive intravenous (IV) antibiotics outside of the hospital. At Infinity ID in Colorado, Dr. Katrina Coulter provides expert oversight of OPAT, ensuring effective, convenient, and compassionate care while helping you recover at home or in a comfortable outpatient setting.

We are part of:

American Board of Internal Medicine
Colorado Medical Society
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Infectious Disease Services

Intravenous Antimicrobial Therapy (OPAT)

What Is OPAT?

OPAT allows patients with serious or complex infections to receive IV antibiotics without prolonged hospital stays. Medications are administered at home, in an infusion center, or sometimes in the clinic, depending on your needs.

OPAT include

Conditions commonly treated with OPAT include

  • Bone & joint infections
  • Bloodstream infections
  • Endocarditis (heart valve infection)
  • Complicated urinary tract infections
  • Skin & soft tissue infections
  • Post-surgical or device-related infections
Benefits of OPAT include:

Benefits of OPAT include:

  • Faster return to home and daily activities
  • Reduced hospital costs and exposure
  • Close specialist follow-up to ensure safety and effectiveness
Infections

Early Treatment

Why Specialist Oversight Matters

IV antibiotics can be powerful but carry risks, including allergic reactions, line infections, or antibiotic resistance. Without proper monitoring, complications may arise.
At Infinity ID, OPAT is directly overseen by a board-certified Colorado Infectious Disease physician, ensuring:

  • The right antibiotic for the right infection
  • Safe line placement and care (PICC line or other access)
  • Regular lab monitoring to check response and side effects
  • Adjustments to therapy as needed for optimal recovery

How we treat

How We Manage OPAT

Dr. Coulter provides comprehensive OPAT management, including: 

 

  • Careful diagnostic review before starting IV antibiotics
  • Coordination with hospitals, infusion centers, or home health agencies
  • Regular office visits and lab monitoring during therapy
  • Guidance for patients and families on IV line care
  • Transition planning to oral medications when possible

How We Manage OPAT
How We Treat Tick-Borne & Zoonotic Infections
Dr. Katrina

Our Approach

Our Approach

Convenience

Stay at home while still receiving hospital-level therapy.

Collaboration

Close coordination with your hospital team, infusion pharmacy, and primary care provider.

Safety First

Continuous monitoring to prevent complications.

Transparency

Clear expectations for treatment length and follow-up.

HOW IT WORKS

Getting Started Is Simple

1. Book Your Appointment

Choose a time that works for you — online or by phone. We offer same-day or next-day appointments when available.

Vector 25 1 Intravenous Antimicrobial Therapy (OPAT)
Vector 25 1 Intravenous Antimicrobial Therapy (OPAT)

2. Complete Intake Forms

You’ll receive secure digital forms to complete before your visit, so we can make the most of our time together.

3. Send Us Your Records (If Needed)

Once approved, you'll receive access to our secure Tebra portal to complete your intake forms and screening tools

Vector 25 1 Intravenous Antimicrobial Therapy (OPAT)

4. Meet with 
Dr. Coulter

Receive a thorough evaluation with a board-certified Infectious Disease specialist. You’ll leave with a clear plan and full confidence in your care.

Infectious Disease Services

We take your health seriously — and your privacy too.

All forms, medical records, and communications are fully HIPAA-compliant and 
securely encrypted to keep your information safe and confidential.

FAQs

Frequently Asked Questions

How long will I be on IV antibiotics?

It depends on the infection. Some patients require a couple of weeks, while others need several months. Dr. Coulter will outline your personalized treatment plan.

Yes. With OPAT, many patients receive their therapy at home through home health nursing or infusion services, with close specialist supervision.

Infinity ID provides urgent support and direct instructions for line-related issues. In most cases, problems can be addressed quickly without a return to the hospital.

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Still have questions?


We’re here to help.

Specialized Infectious Disease & Wellness Care in Colorado

Get an Appointment

Take the Next Step

If you need IV antibiotics, you don’t have to stay in the hospital. Get expert, convenient, and safe outpatient care with Colorado’s Infectious Disease specialist.