About this trial
To assess the 1-week effects and safety of esketamine in combination with pregabalin and duloxetine to relieve pain in patients with postherpetic Neuralgia(PHN).
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Ages more than 18 years;
Pain present for more than 3 months after healing of a herpes zoster skin rash;
Has an average pain score of at least 4 on a Numeric Rating Scale (NRS, 0= no pain, 10= worst possible pain);
Failed to respond to or tolerate the effective dose of pregabalin monotherapy.
Disqualifiers
Obstructive sleep apnoea syndrome;
Those who receive interventional treatments;
A history of systemic immune diseases, organ transplantation, or cancers;
A history of severe cardiopulmonary, hepatic or renal dysfunction;
Trial design
Parallel
Treatments tested in this trial
esketamine group
DrugIn the esketamine group, in addition to receiving the combination of pregabalin and duloxetine, patients will also undergo a single intravenous infusion of esketamine.
control group
Drugreceiving the combination of pregabalin and duloxetine
Treatment groups
Trial outcomes
Primary outcomes
the mean of daily pain scores
the mean of daily pain scores collected during week 1 of treatment measured using the Numerical Pain Rating Scale (NRS,, 0 represents no pain, and 10 represents the most severe pain.A higher score indicates more severe pain).
Secondary outcomes
Averaged weekly NRS score
Averaged weekly NRS score of each participant.Generally, 0 represents no pain, and 10 represents the most severe pain.A higher score indicates more severe pain
percentages of patients having >50% reductions in 24-hour average pain severity during the first week
percentages of patients having \>50% reductions
the 12-item Short-Form Health Survey (SF-12) score
Quality of life (QoL) assessed by the SF-12 score (range 0-100, with higher scores indicating better health status).
the Pittsburgh Sleep Quality Index (PSQI) score
Sleep quality measured by PSQI score (range 0-21, with higher scores indicating poorer sleep quality).
Sponsors and contacts
Click on the lead sponsor to view all of their trials.
Beijing Tiantan Hospital
Lead sponsor
Beijing Xiaotangshan Hospital
Collaborator
The First Hospital of Fangshan District,Beijing
Collaborator
Beijing Ditan Hospital
Collaborator
Hengshui People's Hospital
Collaborator