Please assess the completion status of the following clinical trial:

Trial Title: Acute Post-Radiation Hyperbaric Oxygen (HBO2) for Breast Cancer Patients Who Have Recently Completed Radiation Therapy

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: PREVENTION
- Time Perspective: None
- Masking: NONE
- Phase: PHASE2
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* \> 18 years of age~* Patient is currently undergoing treatment for breast cancer and is on one of two pathways:~  * Pathway 1 involves lumpectomy with radiation therapy, recurrence years later, mastectomy and tissue expander with further radiation therapy~ * Pathway 2 involves mastectomy and tissue expander, 6 weeks of radiation therapy, and an implant in 6 months~* Undergone mastectomy with expander or implant reconstruction \> 2 weeks before starting radiation therapy~* Completed chest wall irradiation in the past 3 days~* Willing to stop herbal medications as directed by provider~* Willing to stop daily use of supplemental vitamin E (Multivitamin with vitamin E component is acceptable, vitamin E cream is also acceptable)~* Willing to have photographs of chest area taken for research purposes only~* Therapeutic PT-INR for participants taking Coumadin~* If tissue expanders remain intact during radiation, plan for conversion to the final implants must occur \> 4 months after completing radiation~* Willing to travel to a Legacy Health facility for study related visits~* Agree to attend study visits outside of standard of care visits, if needed~* Willing to engage in pre/post testing and survey/phone calls~* Willing to attend all 6 weeks of HBOT if randomized to that group~Exclusion Criteria:~* \< 18 years of age~* Pregnant or lactating~* Have final implant placed \< 2 weeks before start of radiation therapy~* Plan to place final impacts \< 4 months from the completion of radiation therapy, if tissue expanders are intact during radiation therapy~* Have evidence of ongoing infection or implant exposure before start of radiation therapy~* Radiation completed more than 3 days prior to study start~* Unable to comply with protocol~* Unable to provide written informed consent~* Unwilling or unable to stop oral supplemental Vitamin E~* PT-INR outside of acceptable range for participants taking Coumadin~* Any delay in radiation treatment greater than 14 days~* Investigator does not believe study participation is in the best interest of the patient~* History of a seizure within the last 5 years

- Gender: FEMALE
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Hyperbaric Oxygen Therapy (Type: EXPERIMENTAL): Hyperbaric oxygen (HBO2) - 100% oxygen at 2.4 atmospheres ATA for 90 minutes, Monday-Friday for 30 sessions (six weeks)
- Trental and Vitamin E (Type: ACTIVE_COMPARATOR): Trental (pentoxifylline), 400 milligrams three times a day in combination with Vitamin E, 400 international units orally twice daily for six months

Based on this trial design, predict the completion outcome and termination type (if applicable).