Case Q: How can I best remove my patient’s difficult-to-find implant?

How do you approach removal of a deep contraceptive implant?

Clinicians who are not trained in deep or difficult implant removal should refer patients to a trained provider (eg, a complex family planning subspecialist), or if not available, partner with a health care practitioner that has expertise in the anatomy of the upper arm (eg, vascular surgery, orthopedics, or interventional radiology). A resource for finding a nearby trained provider is the Organon Information Center (1-877-467-5266). However, when these services are not readily available, consider the following 3-step approach to complex implant removal.

1. Be familiar with the anatomy of the upper arm (FIGURE 3). Nonpalpable implants may be close to or under the biceps or triceps fascia or be near critically important and fragile structures like the neurovascular bundle of the upper arm. Prior to attempting a difficult implant removal, ensure that you are well acquainted with critical structures in the upper arm.
2. Locate the device. Prior to attempting removal, localize the device using either x-ray or ultrasonography, depending on local availability. Ultrasound offers the advantage of mapping the location in 3 dimensions, with the ability to map the device with skin markings immediately prior to removal. Typically, a highfrequency transducer (15- or 18-MHz) is used, such as for breast imaging, either in a clinician’s office or in coordination with radiology. If device removal is attempted the same day, the proximal, midportion, and distal aspects of the device should be marked with a skin pen, and it should be noted what position the arm is in when the device is marked (eg, arm flexed at elbow and externally rotated so that the wrist is parallel to the ear).

^{ILLUSTRATION: MARY ELLEN NIATAS FOR OBG MANAGEMENT}

Rarely, if a device is not seen in the expected extremity, imaging of the contralateral arm or a chest x-ray can be undertaken to rule out mis-documented laterality or a migrated device. Lastly, if no device is seen, and the patient has no memory of device removal, you can obtain the patient’s etonogestrel levels. (Resource: Merck National Service Center, 1-877-888-4231.)

Removal procedure. For nonpalpable implants, strong consideration should be given to performing the procedure with ultrasonography guidance. Rarely, fluoroscopic guidance may be useful for orientation in challenging cases, which may require coordination with other services, such as interventional radiology.

Cleaning and anesthetizing the site is similar to routine removal of a palpable implant. A 2- to 3-mm skin incision is made, either at the distal end of the implant (if one end is amenable to traditional pop-out technique) or over the midportion of the device (if a clinician has experience using the “U” technique).⁶ The incision should be parallel to the long axis of the implant and not perpendicular, to facilitate extension of the incision if needed during the procedure. Straight or curved hemostat clamps can then be used for blunt dissection of the subcutaneous tissues and to grasp the end of the device. Experienced clinicians may have access to a modified vasectomy clamp (with a 2.2-mm aperture) to grasp around the device in the midportion (the “U” technique). Blunt and careful sharp dissection may be needed to free the implant from the surrounding fibrin sheath or if under the muscle fascia. At the conclusion, the device should be measured to ensure that it was completely removed (4 cm).

Indications for referral. Typically, referral to a complex family planning specialist or vascular surgeon is required for cases that involve dissection of the muscular fascia or where dissection would be in close proximity to critical neurologic or vascular structures.

CASE 1 Conclusion

Ultrasonography of the patient’s extremity demonstrated a 4-cm radiopaque implant in the deep subcutaneous tissues of the upper arm, above the fascia and overlying the triceps muscle. The patient was counseled on the risks, benefits, and alternatives to an ultrasound-guided removal, and she desired to move forward with a procedure under sedation. She was able to schedule this concurrently with her chest port placement with interventional radiology. The device was again mapped using high frequency ultrasound. Her arm was then prepped, anesthetized, and a 3-mm linear incision was made over the most superficial portion, the distal 1/3 of the length of the device. The subcutaneous tissues were dissected using a curved Hemostat, and the implant was grasped with the modified vasectomy clamp. Blunt and sharp dissection were then used to free the device from the surrounding capsule of scar tissue, and the device was removed intact.

CASE 2 Patient enquires about immediate IUD insertion

A 28-year-old patient (G1P0) arrives at your clinic for a contraceptive consultation. They report a condom break during intercourse 4 days ago. Prior to that they used condoms consistently with each act of intercourse. They have used combined hormonal contraceptive pills in the past but had difficulty remembering to take them consistently. The patient and their partner have been mutually monogamous for 6 months and have no plans for pregnancy. Last menstrual period was 12 days ago. Their cycles are regular but heavy and painful. They are interested in using a hormonal IUD for contraception and would love to get it today.

Continue to: Is same-day IUD an option?...