A Phase 1 interventional study of Serratus Anterior Plane Block (SAPB) group and Thoracic paravertebral block (TPVB) in Intra and Post Operative Pain Management and Fast Track Program,(Enhanced Recovery After Surgery (ERAS)), sponsored by Ain Shams University. Active, not recruiting at 1 site in Egypt. Open to participants aged 40 Years to 70 Years. Per ClinicalTrials.gov, last updated 2026-11-03.
Sponsored by Ain Shams University · Phase 1, Interventional, and Treatment
Aim is to compare intra and postoperative analgesic efficacy of US-guided serratus anterior plane block (SAPB) or thoracic paravertebral block (TPVB) versus intravenous fentanyl in patient undergoing on-pump CABG surgery.
Aim is to compare intra and postoperative analgesic efficacy of US-guided serratus anterior plane block (SAPB) or thoracic paravertebral block (TPVB) versus intravenous fentanyl in patient undergoing on-pump CABG surgery.
The enrolled (111) patients will be randomly assigned via a computer-generated randomization table into three parallel and equivalent (1:1:1 ratio) groups: group A (37); will receive serratus anterior plane block, group B (37);will receive thoracic paravertebral block and group C (37); standard of care control group, will receive fentanyl infusion.
Group (A):
SAPB block will be performed Bilaterally. 20 ml of 0.25% bupivacaine hydrochloride [Maracine prepared by adding an equal volume (1:1) of normal saline (0.9%) to 0.5% bupivacaine]will be injected.
Group (B):
TPVB will be performed bilaterally. 20 ml of 0.25% bupivacaine [Maracine prepared by adding an equal volume (1:1) of normal saline (0.9%) to 0.5% bupivacaine] will be injected.
Group (C) (Control):
Patient will receive IV fentanyl infusion just before skin incision, which will be stopped when cardiopulmonary bypass (CPB) is on, then resumed after weaning form CPB and continued till the end of the surgery.500µg fentanyl will be mixed with 50 ml 0.9% normal saline in 50 ml syringe (10 µg /ml).Infusion rate will be determined according to a dose of 1µg /kg/h.
5,640 studies on the registry are indexed under Pain, Postoperative; 1,230 are open to participants now.
This study's planned enrollment of 111 is above the median of 75 across 4,821 interventional studies indexed under Pain, Postoperative.
Browse Pain, Postoperative studies →Ain Shams University is the lead sponsor of 1,950 studies on the registry; 429 are open to participants now.
Of its 35 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.
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Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Blood tests of how long blood takes to clot. The INR is the prothrombin time (PT) put on a common scale; about 1 is usual for someone not taking a blood thinner.
Criteria often make an exception for people on a blood thinner such as warfarin, whose INR is raised on purpose.
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
LVEF (left ventricular ejection fraction)
The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
INR, PT and aPTT (clotting tests)
Blood tests of how long blood takes to clot. The INR is the prothrombin time (PT) put on a common scale; about 1 is usual for someone not taking a blood thinner.
Criteria often make an exception for people on a blood thinner such as warfarin, whose INR is raised on purpose.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Platelets
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
BMI (body mass index)
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
this group will be given 20 ml of 0.25% bupivacaine hydrochloride bilaterally
Procedure: Serratus Anterior Plane Block (SAPB) group
this group will be given 20 ml of 0.25% bupivacaine hydrochloride bilaterally
Procedure: Thoracic paravertebral block (TPVB)
Intravenous fentanyl infusion 1µg /kg/h
Drug: Intravenous fentanyl 1 μg∙kg-1
In SAPB; the needle is advanced in-plane from caudally cephalad at the midaxillary line at the level of the fourth rib with 45-degree angle, targeting the plane between the latissimus dorsi and serratus muscles. SAPB block will be performed Bilaterally. After confirmation that the needle tip is in the correct plane by injecting 2 ml of saline, 20 ml of 0.25% bupivacaine hydrochloride \[Maracine prepared by adding an equal volume (1:1) of normal saline (0.9%) to 0.5% bupivacaine\]will be injected, with intermittent aspiration to confirm neither air nor blood in the needle.
In TPVB; the needle is advanced in parasagittal plane over the transverse processes of the T4 and T5 vertebrae, about 2.5 cm lateral to the spinous processes, just deep to the superior costotransverse ligament but superficial to the parietal pleura. TPVB will be performed bilaterally. After confirmation that the needle tip is in the correct plane by injecting 2 ml of saline, 20 ml of 0.25% bupivacaine \[Maracine prepared by adding an equal volume (1:1) of normal saline (0.9%) to 0.5% bupivacaine\] will be injected, with intermittent aspiration to confirm no air or blood in the needle.
Patient will receive IV fentanyl infusion just before skin incision, which will be stopped when cardiopulmonary bypass (CPB) is on, then resumed after weaning form CPB and continued till the end of the surgery.500µg fentanyl will be mixed with 50 ml 0.9% normal saline in 50 ml syringe (10 µg /ml).Infusion rate will be determined according to a dose of 1µg /kg/h.
Duration of analgesia in hours
Time frame: up to 12 hours
Postoperative visual analogue pain score (VAS)
Postoperative visual analogue pain score (VAS): It will be recorded every 1 hour after admission to ICU for the first 4 hours ' then every 2 hours for the remaining 8 hours
Time frame: up to 12 hours
Total dose of fentanyl
Total doses of intra , postoperative fentanyl consumption and doses of rescue fentanyl.
Time frame: up to 18 hours
Intra and postoperative haemodynamic data
Mean blood pressure (mmHg): Baseline, immediately after performing the block, at 30 minutes intervals (except when the patient on CPB) till the end of surgery Mean blood pressure (mmHg): Immediately after ICU admission, at 1 hour intervals in the 1st 6 hours, then at 2 hours intervals till 12 hours
Time frame: up to 18 hours
Postoperative extubation time
Postoperative extubation time in minutes.
Time frame: for 12 hours
Patients with block-related side effects and complications
bleeding , hematoma , inflammation , nerve injury , hemodynamic changes
Time frame: for 3 days
Pulmonary function assessment
Pulmonary function assessment \[forced expiratory volume at one second as % of predicted) using spirometry: Every 6 hours after extubation up to 12 hours
Time frame: for 12 hours
Intra and postoperative haemodynamic data. Heart rate
Heart rate (beats/minute): Baseline, immediately after performing the block, at 30 minutes intervals (except when the patient on CPB) till the end of surgery Heart rate (beats/minute): Immediately after ICU admission, at 1 hour intervals in the 1st 6 hours, then at 2 hours intervals till 12 hours
Time frame: up to 18 hours
Plan to share: Undecided
Started Jan 2026 (actual). Primary completion is estimated for Nov 2026, 10 months after the start.
Of 65 non-industry phase 1 interventional studies under Pain, Postoperative, half reached primary completion within 18 months of starting (the median), counting those still running; a quarter within 8 and three quarters within 30. This study's planned 10 months is below that.
Counting every sponsor, half of 83 studies reached it within 16 months; a quarter within 6 and three quarters within 27.
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
This study is active, not recruiting, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.
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