Continuous IntraVenous Infusion of Ketamine in Terminally Ill Cancer Patients

Phase 2UnknownNCT03362073

Pusan National University Yangsan Hospital26 enrolled

Overview

To establish the role of ketamine in hospitalized terminally ill cancer patients with refractory cancer pain, using continuous intravenous infusion of ketamine

* There are approximately 20 percent patients of refractory cancer pain, which is troubled with uncontrolled pain though treatment including opioids. * Ketamine has been showed the performance of Ketamine, N-methyl-D-aspartate (NMDA) receptor blocker, in refractory cancer pain based on prior studies. * We cannot yet confirm the role of Ketamine comparing the benefit and risk due to incompatible results of prior studies. Additionally, most of prior studies were studied in heterogenous groups, which are from beginning of palliative chemotherapy to terminal status, so role of ketamine was not assessed in homogeneous terminally ill cancer patients. And they has used mostly 'bolus intravenous infusion' or 'continuous subcutaneous infusion (CSCI)', relatively rare in continuous intravenous infusion (CIVI). * The bolus intravenous method is convenient but is concerned with leading to relatively severe adverse events due to poor general condition of terminally ill cancer patients, the CSCI method is not recommended because of adverse events (AEs) such as skin irritation. On the contrary, the CIVI method using gradual increasing ketamine minimizes AEs and is free of skin irritation. Most of hospitalized terminally ill cancer patients has proper IV access using intravascular devices (chemoport or PICC). So, CIVI method is suitable to hospitalized terminally ill cancer patients. * This study assess the efficacy and safety of 5-days CIVI gradual dose titration of Ketamine in terminally ill cancer patients with refractory cancer pain.

Study Type

INTERVENTIONAL

Allocation

Purpose

TREATMENT

Masking

NONE

Enrollment

Conditions

Ketamine Refractory Cancer Pain

Interventions

KetamineDRUG

Application of ketamine using continuous intravenous infusion method during 5 days * Ketamine 100mg/2ml + 5% Dextrose water or Normal saline 98 ml mixed fluid * Dose schedule: 0.05mg/kg/hr -\> 0.10mg/kg/hr -\> … -\> 0.5mg/kg/hr (increase dose at a rate of 0.05mg/kg/hr every 8 hours)

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria: 1. Among patients with histologically or cytologically confirmed malignancy, patients with expected survival time of several months or less due to a progressive disease without additional anticancer treatment. 2. Patients with refractory cancer pain, which cases of requesting 4 or more breakthrough analgesics or increase of baseline analgesics (average pain score ≥ 4 or Personalized pain goal) in spite of 120 mg/day or more of intravenous Morphine Equivalent Daily Dose 3. Hospitalized patients with intravascular access during at least 5 days 4. Age 18 or older 5. Signed and dated informed consent of document indicating that the patient (or legally acceptable representative) has been informed about all pertinent aspects of the trial prior to enrollment Exclusion Criteria: 1. Patients who were treated with ketamine for pain control within 6 months 2. Patients who have been treated with radiotherapy within 4 weeks or plan to intervention for pain control during study period 3. Cancer pain cannot be excluded the Opioid induced hyperalgesia 4. Concomitant severe medical, surgical, or disease or problems which were contraindicated to application of Ketamine or have possibilities of unexpected medical problems caused be the Ketamine * confirmed or assumed central nervous system lesion which lead to increased intracranial pressure * Arrhythmia (supra-ventricular tachycardia, ventricular arrhythmia (frequent premature ventricular contraction, bigeminy, Ventricular tachycardia) * history of hemorrhagic stroke or seizure within 3 months

Locations (1)

Pusan National University Yangsan Hospital

Yangsan, Gyeongsangnam-do, South Korea

RECRUITING

Outcomes

Primary Outcomes

Overall response rate

complete pain response plus partial pain response * Complete pain response is defined as patient reported pain score using numerical rating scale (range 1-10) ≤ 3 or ≤ personalized pain goal (PPG) and receiving less than four rescue analgesic doses for 24 hours, without unacceptable toxicities * Partial pain response is defined as receiving less than four rescue analgesic doses per day without a patient reported pain score using numerical rating scale (range 1-10) ≤ 3 or ≤ personalized pain goal for 24 hr, without unacceptable toxicities

Time frame: From date of enrollment until 5 days or drop-out, assess up to 2 years

Secondary Outcomes

Change of pain intensity

Delineate changes of pain intensity daily, from the time baseline until 5th days after application of ketamine. Pain intensity is defined as the mean of terdiurnal checked patient reported pain score during a day.

Time frame: From date of enrollment until 5 days or drop-out, assess up to 2 years

Rescue analgesics for breakthrough pain

Dose and number of rescue analgesics for breakthrough pain

Time frame: From date of enrollment until 5 days or drop-out, assess up to 2 years

Patient's satisfaction about Ketamine by a newly developed question in this study

Satisfaction about pain control and Ketamine-related distress during application of ketamine was evaluated by questions as follows: "How do you feel satisfaction about ketamine?" (at 5th days or drop-out)

Time frame: at the 5th days or drop-out, assess up to 2 years

Guardian's satisfaction about Ketamine by a newly developed question in this study

Central Contacts

Kwonoh Park, MD, PhD

CONTACT

+82-10-3378-3529 parkkoh@daum.net

Mikyung Kang

CONTACT

tesoon@hanmail.net

Data from ClinicalTrials.gov

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