Clinical trial NCT05444413: Platelet-rich Plasma in the Treatment of Intractable Postherpetic Neuralgia
Official title: Effect of Ultrasound-guided Platelet-Rich Plasma Nerve Block Combined With Drugs in the Treatment of Intractable Postherpetic Neuralgia
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE1
Conditions: PHN - Post-Herpetic Neuritis
Keywords: platelet-rich plasma
Intractable postherpetic neuralgia
Lead sponsor: Affiliated Hospital of Nantong University
Sponsor class: OTHER
First posted: 2022-07-05
Enrollment: 32
Sex: ALL
Minimum age (years): 40
Maximum age (years): 70
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: NA
Intervention model: SINGLE_GROUP
Intervention model description: patients with Intractable Postherpetic Neuralgia
Primary purpose: TREATMENT

Brief summary: used ultrasound-guided platelet rich plasma nerve block to treat Intractable Postherpetic Neuralgia.

Detailed description: Postherpetic neuralgia (PHN) is a kind of pain caused by varicella zoster virus invading the human body and infecting the corresponding ganglia. The affected ganglia are inflamed or even necrotic, affecting the nerve endings, the dorsal horn of the spinal cord and the sensory nerve tissues below, and the course of the disease is more than one month or more. Most patients can avoid PHN by timely and effective treatment in the acute herpes zoster period. However, some patients with intractable postherpetic neuralgia fail to receive timely and effective pain control treatment in the early stage of the disease, and the current commonly used clinical treatment methods often fail to achieve effective treatment results. Such patients often have a long course of disease, which can last for three to five years or even longer, Nerve damage is also more serious. Long term pain has seriously affected the quality of life of such patients. Therefore, how to quickly and effectively control pain has become the diagnosis and treatment goal of such patients with intractable post herpetic neuralgia. Platelet rich plasma (PRP) was widely used in muscle and bone repair due to its function of promoting tissue repair in the early stage. Recently, it was found that PrP can also promote nerve repair. Therefore, in order to further explore the therapeutic effect of PRP on refractory PHN patients, our department used ultrasound-guided platelet rich plasma nerve block to treat Intractable PHN.

Eligibility criteria: Inclusion Criteria:

* Meet the diagnostic criteria of PHN: have a history of acute herpes zoster, the pain lasts for more than half a year, and there is paroxysmal pain in the affected nerve distribution area;
* Preoperative visual analog scale (VAS) score ≥ 5;
* Those who can cooperate with the treatment;
* We agreed to inject platelet rich plasma into nerve block under the guidance of ultrasound, and signed the informed consent form.

Exclusion Criteria:

* Systemic infection or puncture local infection;
* Serious disturbance of cardiovascular and cerebrovascular function;
* Abnormal bleeding and coagulation function or complicated with blood system diseases;
* Mental disorders;
* Severe dysfunction of important organs in the body

Primary outcomes:
measure: The changes from degree of pain that patients feel after the treatment are assessed by the numerical rating scale (NRS).
timeFrame: Change from the numerical rating scale at 6 months
Secondary outcomes:
measure: The changes from degree of pain that patients feel after the treatment are also assessed by the Short-form McGill Pain Questionnaire(SF-MPQ).
timeFrame: Change from the total score of Short-form McGill Pain Questionnaire at 6 months
measure: The changes from degree of the patient' sleep quality after the treatment are assessed by the Athens Insomnia Scale.
timeFrame: Change from the patient' sleep quality at 6 months
Other outcomes:
Locations:
city: Nantong
country: China
facility: Affiliated Hospital of Nantong University
state: Jiangsu
Study officials:
affiliation: Affiliated Hospital of Nantong University
name: yuan zhou, doctor
role: STUDY_DIRECTOR
References: