Regional Anesthesia for Postnephrectomy Pain
Conditions
Keywords
nephrectomy pain
Brief summary
Radical nephrectomy is the surgical process for the resection of malignant tumors of the kidney necessitating a subcostal flank incision.Mild to severe pain is observed in the postoperative period Ineffective pain management leads to several complications. The mid point transverse process to pleura block (MTP) , this technique was used for pain relief after mastectomy, thoracic, abdominal, and spinal surgery and was found effective due to its simplicity and lower risks compared to epidural analgesia.
Detailed description
Ineffective pain management leads to several complications including immobilization, thromboembolism, persisting chronic pain, increased opioid consumption, and delayed hospital discharge.\[3\] Multimodal analgesic (MMA) regimens using several drugs and techniques are considered to be necessary for postoperative pain relief. Regional anesthesia techniques, mainly epidural analgesia and more recently, paravertebral blocks became crucial parts of a MMA regimen after the introduction of ultrasound (US) in the regional anesthesia practice. The mid point transverse process to pleura block (MTP) block was first described as a modified paravertebral block in 2017. The local anesthetic drugs are administered between the transverse process and the pleura. This results in a local anesthetic drugs spread to the dorsal and ventral rami in the paravertebral space through the fenestrations in the superior costotranverse ligament (SCTL) at the level of injection, and frequently to adjacent levels. This technique was used for pain relief after mastectomy, thoracic, abdominal, and spinal surgery and was found effective due to its simplicity and lower risks compared to epidural analgesia.
Interventions
PROCEDUREMid transverse process to pleura block (MTP)
After marking the level of the incision by surgeon (commonly T11 -T12) The patient will be situated in modified lateral position with flank region over kidney elevated to wide the space between iliac crest and subcostal margin, the block area will be sterilized with povidine-iodine, and high -frequency linear ultrasound probe will be placed oblique parasagittally lateral to the spinous process of T11 or T 12 and scanning till appearance of transverse process, 100-mm short bevel echogenic needle (Vygon) will be inserted in plane from cranial to caudal direction. The desired end point of the needle tip will be the midpoint of the line between the posterior border of transverse process and the pleura.After negative aspiration to avoid intravascular injection levobupivacaine 0.5% and dexamethazone 4mg total volume 21ml will be injected
PROCEDUREMid transverse process to pleura Sham block
After marking the level of the incision by surgeon (commonly T11 -T12) The patient will be situated in modified lateral position with flank region over kidney elevated to wide the space between iliac crest and subcostal margin, the block area will be sterilized with povidine-iodine, and high -frequency linear ultrasound probe will be placed oblique parasagittally lateral to the spinous process of T11 or T 12 and scanning till appearance of transverse process, 100-mm short bevel echogenic needle (Vygon) will be inserted in plane from cranial to caudal direction. The desired end point of the needle tip will be the midpoint of the line between the posterior border of transverse process and the pleura. with 2ml normal saline subcutaneously will be injected
Sponsors
Tanta University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Outcomes Assessor)
Masking description
participants will be masked as they will be under effect of anesthesia while the investigators resposible for pain scoring and clinical assesment are masked
Intervention model description
prospective randomized controlled trial
Eligibility
Sex/Gender
ALL
Age
21 Years to 65 Years
Healthy volunteers
No
Inclusion criteria
* Inclusion Criteria: - ASA II and III patients * scheduled for partial or radical nephrectomy * standard flank incision either subcostal ,intercostal or supracostal approach * under general anesthesia.
Exclusion criteria
* Bleeding disorders, * Mental or cognitive dysfunction, * History of chronic analgesic or drug abuse, * Allergy to local anesthetics * Local infection at site of block
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Assessment of acute post nephrectomy pain | the first postoperative day | by Numerical rating score for pain assessment(NRS) minimum value is 0 maximum value is 10 and higher score means poor outcome |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| chronic post nephrectomy pain development. | the first postoperative 3 monthes | Numerical rating score for pain assessment (NRS) minimum value is 0 maximum value is 10 and higher score means poor outcome |
Countries
Egypt
Outcome results
None listed