In an operative report the LOA medical abbreviation usually means lysis of adhesions, the surgical step of cutting or separating bands of scar tissue that have stuck organs together inside the abdomen or pelvis. In a labor and delivery note, the same letters mean left occiput anterior, a description of how a baby's head is positioned in the birth canal.
A third use, leave of absence, turns up in hospital and behavioral health records. The note's setting nearly always makes the meaning obvious, and the sections below walk through each one, with sample lines and the terms that tend to appear nearby.
At a glance
Stands for
Lysis of adhesions (surgery and gynecology)Other meanings
Left occiput anterior (obstetrics); leave of absence (hospital records)Word roots
Lysis (loosening or breaking apart); occiput (back of the head)Used in
General surgery, gynecology, obstetrics, inpatient unitsWritten as
LOA, adhesiolysis, L.O.A.Do not confuse with
LOC (loss of consciousness or level of consciousness)
LOA medical abbreviation surgery meaning: lysis of adhesions
Adhesions are bands of fibrous tissue that form between organs or between organs and the belly wall. They often develop after earlier operations, infection, inflammation or endometriosis. Many cause no trouble, but some can pull on the bowel, cause pain, or block the intestine, a problem written SBO.
Lysis of adhesions, also called adhesiolysis, is the step in which a surgeon carefully cuts those bands to free the organs. It can be the main purpose of an operation or a step done along the way so the surgeon can see and reach the area being treated.
Reading LOA in an operative note
Operative reports list procedures in order, and LOA often sits beside the approach used.
| Line | Plain reading |
|---|---|
| Laparoscopic LOA | Adhesions cut using a camera and small ports |
| Ex lap, LOA, SBR | Open belly surgery, adhesions freed, part of the small bowel removed |
| LOA, 45 minutes | The time spent on adhesiolysis, sometimes recorded for coding |
| Dense pelvic adhesions, LOA performed | Thick scar bands in the pelvis were separated |
Operative time on adhesions can matter for billing and for explaining a longer operation, which is why some surgeons chart it.
LOA medical abbreviation gynecology use
In gynecologic surgery, adhesions often involve the uterus, ovaries, tubes and bowel, especially after cesarean birth, pelvic infection or endometriosis. A gynecologist may write LOA in a laparoscopy report when scar bands were separated to treat pain or to reach the organs during a hysterectomy or ovarian surgery. A removal of both tubes and ovaries, written BSO, may list LOA as an extra step.
In a gynecology report: "Filmy adhesions between omentum and anterior abdominal wall, LOA performed sharply." The surgeon found thin scar bands from the fatty apron of the belly to the front wall and cut them with scissors.
Left occiput anterior in labor notes
Obstetric providers describe fetal position by which part of the baby's head leads and where it faces. Occiput means the back of the head. Left occiput anterior means the back of the baby's head is toward the mother's left front, so the baby faces her right back. Clinicians regard it as a common and favorable position for a vaginal birth.
Related positions include ROA (right occiput anterior), OA (directly anterior), and OP (occiput posterior, the face up position). These appear in a cervical exam note, which may be written as an SVE.
Leave of absence and how to sort the meanings
Some inpatient and behavioral health units record LOA for an approved leave of absence, a planned period away from the unit, such as a day pass. In that setting the note talks about times out and back, not procedures or labor.
- Operative report, laparoscopy or bowel: lysis of adhesions.
- Labor note, cervical exam or fetal heart tracing: left occiput anterior.
- Pass times, return times or unit policy: leave of absence.
The surgical abbreviations hub lists more operating room shorthand.
Questions after an operation that included LOA
Patients reading their own report may want to ask why adhesions formed, whether freeing them is expected to ease symptoms, and whether adhesions can return, which they sometimes do. Surgeons can also explain whether the adhesiolysis was the main goal or a step toward another repair.
The meanings above are general. The surgeon, obstetric provider or unit staff who wrote the note can confirm what LOA refers to in your record.
Frequently asked questions
What does LOA mean in surgery?
In surgery LOA means lysis of adhesions, cutting bands of scar tissue that hold organs together. It can be done through a laparoscope or during open surgery.
What does LOA mean in pregnancy?
In a labor or delivery note, LOA means left occiput anterior. The back of the baby's head points toward the mother's left front, a common position for birth.
What causes adhesions that need LOA?
Adhesions often form after earlier abdominal or pelvic surgery, infection, inflammation or endometriosis. Many cause no symptoms, while some lead to pain or bowel blockage.
Can LOA mean leave of absence in a hospital?
Yes. Some inpatient and behavioral health units use LOA for an approved period away from the unit. The surrounding notes about departure and return times make that meaning clear.