Prospective Observational Study of Postoperative Opioid Consumption in Chronic Opioid-Cunsuming Patients

Prospective Observational Study of Postoperative Opioid Consumption in Chronic Opioid-Cunsuming Patients - Prospective Observational Study of Postoperative Opioid Consumption in Chronic Opioid-Cunsuming Patients

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000010995

Enrollment

100

Registered

2013-06-20

Start date

2013-06-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronic opioid-consuming patients suffering from cancer pain or chronic pain who schedule a surgery

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Chronic opioid-consuming patients who are suffering from cancer pain or chronic pain and use patient-controlled analgesia after surgery. We retrospectively identified key factors to predict postoperative opioid requirement in chronic opioid-consuming patients who underwent elective surgeries

Exclusion criteria

Exclusion criteria: taking buprenorphine, with impairment of consciousness, under sedation after sugery, with renal dysfunction, with symptom of ileus, morphine allergy

Design outcomes

Primary

Measure	Time frame
amount of morphine that chronic opioid-consuming patients require within 24 hours after surgery	—

Secondary

Measure	Time frame
complications such like nausea, somnolence and respiratory depression and score of numerical rating scale	—

Countries

Japan

Contacts

Public ContactNaho Ihara

Keio University Department of Anesthesiology

naho.loves.shiho@gmail.com03-3353-1211ext.61608

Outcome results