ClinicalTrials.gg
CompletedNCT07097441Updated Jul 31, 2025

To Observe Haemodynamic Parameters Including, Heart Rate, Blood Pressure, Respiratory Rate , and Oxygen Saturation, With or Without Giving Reversal Agent on Extubation, in Patients Receiving Single Shot of Atracurium , and to Observe Post Operative Residual Paralysis and Airway Reflexes in PACU.

A Phase 1/2 interventional study of Placebo drug ( normal saline ) and neostigmine (reversal agent) in Tachycardia, Hypertension and Hypoxia, sponsored by Ziauddin University. Completed at 1 site in Pakistan. Open to participants aged 16 Years to 70 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-07-31.

Sponsored by Ziauddin University · Phase 1/2, Interventional, and Treatment

From the registry’s dates

  • Registered 4 months after the study started (first participant enrolled Mar 2025, registered Jul 2025).
Phase
Phase 1/2
Study type
Interventional
Enrollment
100
Allocation
Randomized
Ages
16 Years to 70 Years
Sex
All
01

Study summary

The goal of this clinical trial is to to observe the haemodynamic parameters including Heart Rate Blood pressure Respiratory rate and Oxygen Saturation with or without giving reversal agent on extubation in patients receiving atracurium on induction , it will also observe post operative residual paralysis respiratory depression and airway reflexes in the post anaesthesia care unit Researchers will compare neostigmine which is the reversal agent and the placebo drug by giving it at the end on surgery before extubation to observe haemodynamic parameters The main questions it aims to answer are Will participants have a stable haemodymaics if no reversal ( neostigmine ) is used during extubation Will it provide a safe extubation and no complications post operatively Participants will be given Either neostigmine or placebo drug at the end of surgery before extubation Will be obseved and monitored for two hours postoperatively in the post anaesthesia care unit Will be monitored for post operative complications like respiratory depression or residual paralysis

.

Read the detailed description

Objective : To observe the haemodynamic parameters including Heart Rate Blood pressure Respiratory rate and Oxygen Saturation with or without giving reversal agent on extubation in patients receiving atracurium on induction , and secondary objective was to observe post operative residual paralysis respiratory depression and cough and gag reflex Study design : Controlled , randomised , and triple Blind trial . Place and duration of study: Dr Ziauddin Hospital Clifton Karachi , from March to June 2025.

Methodology : This was a triple blind study . A total of 100 patients were randomly assigned by the CTU to two groups , the placebo group ( Group A ) and the neoglycopyrolate group (Group B) based on computer generated allocation. At the end of the surgery, patients in Group A were administered IV normal saline and Group B were administered neoglycopyrolate 50 mcg/kg . The primary outcome was to observe heart rate , blood pressure, oxygen saturation and respiratory rate after giving the drug , before extubation , at extubation and at 1mins, 5mins, 10mins, 20mins, and 2h thereafter, while the secondary outcome was to observe post operative airway reflexes and residual paralysis in the post anaesthesia care unit

02

Conditions studied

  • Tachycardia
  • Hypertension
  • Hypoxia
  • Hyperventilation
  • Residual Paralysis, Post Anesthesia
03

In context

Tachycardia

189 studies on the registry are indexed under Tachycardia; 24 are open to participants now.

This study's enrollment of 100 is above the median of 80 across 117 interventional studies indexed under Tachycardia.

Browse Tachycardia studies →

Lead sponsor

Ziauddin University is the lead sponsor of 51 studies on the registry; 9 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
16 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

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.

Inclusion criteria

  • American society of anaesthesiology class 1 and 2
  • Surgeries lasting for 60 mins
  • .Surgeries requiring general anaesthesia and tracheal intubation and single intubation dose of atracurium

Exclusion criteria

Exclusion Criteria:

  • American society of anaesthesiology class 3 and above
  • Any previous reaction to atracurium
  • Active asthma
  • Severe pulmonary cardiac kindney and liver disease
05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
100 participants (actual)

Study arms

  • Active comparator
    Neostigmine group ( Group B )

    This group will reeive neostigmine ( reversal agent ) at the end of surgery before extubation and then haemodynamic parameters will be observed

    Drug: neostigmine (reversal agent)

  • Experimental
    normal saline group ( Group A )

    This group will receive normal saline ( no reversal ) at the end of surgery before extubation and then haemodynamic parameters will be observed

    Drug: Placebo drug ( normal saline )

Interventions

  • DrugPlacebo drug ( normal saline )

    At the end of surgery patients will be given placebo ( normal saline ) instead of neostigmine ( reversal agent of atracurium ) , to observe Heart rate, blood pressure , respiratory rate and oxygen saturation on extubation and post operative airway reflexes and residual paralysis

    Also known as: Group A

  • At the end of surgery patients will be given neostigmine ( reversal agenr ) , to observe Heart rate, blood pressure , respiratory rate and oxygen saturation on extubation and post operative airway reflexes and residual paralysis

    Also known as: Group B

06

What researchers measure

Primary outcomes

  1. Heart rate

    To observe Heart rate, via pulse oximeter and ECG

    Time frame: From the time of extubation till discharge from post anaesthesia care unit

  2. Blood Pressure

    to observe Blood Pressure via Sphygmomanometer

    Time frame: From the time of extubation till discharge from post anaesthesia care unit

  3. Respiratory Rate

    to observe respiratory rate via capnometer

    Time frame: From the time of extubation till discharge from post anaesthesia care unit

  4. Oxygen Saturation

    to observe oxygen saturation via pulse oximeter

    Time frame: From the time of extubation till discharge from post anaesthesia care unit

Secondary outcomes

  1. Airway reflexes

    to observe cough and gag reflex via Binary scale e.g Yes/No

    Time frame: From the time of extubation till discharge from post anaesthesia care unit

  2. Residual paralysis

    to observe head lift for more than 5 secs and firm hand grip via Bonary scale e.g Yes/No

    Time frame: From the time of extubation till discharge from post anaesthesia care unit

07

Study locations

1 site
  • Ziauddin university
    Karachi, Sindh, Pakistan
08

References and documents

Publications

  • Berg H, Roed J, Viby-Mogensen J, Mortensen CR, Engbaek J, Skovgaard LT, Krintel JJ. Residual neuromuscular block is a risk factor for postoperative pulmonary complications. A prospective, randomised, and blinded study of postoperative pulmonary complications after atracurium, vecuronium and pancuronium. Acta Anaesthesiol Scand. 1997 Oct;41(9):1095-1103. doi: 10.1111/j.1399-6576.1997.tb04851.x. PubMed 9366929 ↗
  • Eikermann M, Fassbender P, Malhotra A, Takahashi M, Kubo S, Jordan AS, Gautam S, White DP, Chamberlin NL. Unwarranted administration of acetylcholinesterase inhibitors can impair genioglossus and diaphragm muscle function. Anesthesiology. 2007 Oct;107(4):621-9. doi: 10.1097/01.anes.0000281928.88997.95. PubMed 17893459 ↗
  • Baillard C, Gehan G, Reboul-Marty J, Larmignat P, Samama CM, Cupa M. Residual curarization in the recovery room after vecuronium. Br J Anaesth. 2000 Mar;84(3):394-5. doi: 10.1093/oxfordjournals.bja.a013445. PubMed 10793602 ↗
  • Bartkowski RR. Incomplete reversal of pancuronium neuromuscular blockade by neostigmine, pyridostigmine, and edrophonium. Anesth Analg. 1987 Jul;66(7):594-8. PubMed 3605668 ↗
  • Fragen RJ. Role of reversal agents. J Clin Anesth. 1992 Sep-Oct;4(5 Suppl 1):9S-15S. doi: 10.1016/0952-8180(92)90012-p. No abstract available. PubMed 1356374 ↗
  • Kirkegaard-Nielsen H, Severinsen IK, Pedersen HS, Lindholm P. Factors predicting atracurium reversal time. Acta Anaesthesiol Scand. 1999 Sep;43(8):834-41. doi: 10.1034/j.1399-6576.1999.430809.x. PubMed 10492412 ↗
  • Carroll MT, Mirakhur RK, Lowry D, Glover P, Kerr CJ. A comparison of the neuromuscular blocking effects and reversibility of cisatracurium and atracurium. Anaesthesia. 1998 Aug;53(8):744-8. doi: 10.1046/j.1365-2044.1998.00530.x. PubMed 9797517 ↗
  • 13 .Pollard BJ. Neuromuscular blocking agents and reversal agents. Anaesthesia & intensive care medicine. 2005 Jun 1;6(6):189-92.
  • 12. Nagelhout J, Plaus K. Neuromuscular blocking agents, reversal agents, and their monitoring. Nurse anesthesia. 2017 May 27:179-202.
  • Lee H, Jeong S, Choi C, Jeong H, Lee S, Jeong S. Anesthesiologist's satisfaction using between cisatracurium and rocuronium for the intubation in the anesthesia induced by remifentanil and propofol. Korean J Anesthesiol. 2013 Jan;64(1):34-9. doi: 10.4097/kjae.2013.64.1.34. Epub 2013 Jan 21. PubMed 23372884 ↗
  • Butterly A, Bittner EA, George E, Sandberg WS, Eikermann M, Schmidt U. Postoperative residual curarization from intermediate-acting neuromuscular blocking agents delays recovery room discharge. Br J Anaesth. 2010 Sep;105(3):304-9. doi: 10.1093/bja/aeq157. Epub 2010 Jun 24. PubMed 20576632 ↗
  • Reich DL, Mulier J, Viby-Mogensen J, Konstadt SN, van Aken HK, Jensen FS, DePerio M, Buckley SG. Comparison of the cardiovascular effects of cisatracurium and vecuronium in patients with coronary artery disease. Can J Anaesth. 1998 Aug;45(8):794-7. doi: 10.1007/BF03012152. PubMed 9793671 ↗
  • Use of atracurium and its reversal by anaesthesiologists at a tertiary care hospital. (2013). International Research Journal of Pharmacy, 4(3), 178-181.
  • Babu KC, Rajan S, Sandhya SVK, Raj R, Paul J, Kumar L. Effectiveness and Safety of Extubation before Reversal of Neuromuscular Blockade versus Traditional Technique in Providing Smooth Extubation. Anesth Essays Res. 2021 Jan-Mar;15(1):133-137. doi: 10.4103/aer.aer_78_21. Epub 2021 Aug 30. PubMed 34667360 ↗
  • Varposhti MR, Heidari SM, Safavi M, Honarmand A, Raeesi S. Postoperative residual block in postanesthesia care unit more than two hours after the administration of a single intubating dose of atracurium. J Res Med Sci. 2011 May;16(5):651-7. PubMed 22091288 ↗
  • Luo J, Chen S, Min S, Peng L. Reevaluation and update on efficacy and safety of neostigmine for reversal of neuromuscular blockade. Ther Clin Risk Manag. 2018 Dec 10;14:2397-2406. doi: 10.2147/TCRM.S179420. eCollection 2018. PubMed 30573962 ↗
  • Debaene B, Plaud B, Dilly MP, Donati F. Residual paralysis in the PACU after a single intubating dose of nondepolarizing muscle relaxant with an intermediate duration of action. Anesthesiology. 2003 May;98(5):1042-8. doi: 10.1097/00000542-200305000-00004. PubMed 12717123 ↗
  • Tsai YH, Chen CY, Wong HF, Chou AH. Comparison of neostigmine and sugammadex for hemodynamic parameters in neurointerventional anesthesia. Front Neurol. 2023 Apr 17;14:1045847. doi: 10.3389/fneur.2023.1045847. eCollection 2023. PubMed 37139057 ↗
  • Neely GA, Sabir S, Kohli A. Neostigmine. 2025 Jan 19. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2026 Jan-. Available from http://www.ncbi.nlm.nih.gov/books/NBK470596/ PubMed 29261883 ↗
  • Hughes R, Chapple DJ. The pharmacology of atracurium: a new competitive neuromuscular blocking agent. Br J Anaesth. 1981 Jan;53(1):31-44. doi: 10.1093/bja/53.1.31. PubMed 6161627 ↗

Related links

Individual participant data

Plan to share: No

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Mar 2025 to primary completion in Jun 2025, 2 months.

How these figures are worked out, and which studies are left out of them.

Registered
Jul 17, 2025
First posted
Jul 31, 2025
StartActual
Mar 12, 2025
Primary completionActual
Jun 4, 2025
CompletionActual
Jun 4, 2025
Last update
Jul 31, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jul 31, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT07097441
Lead sponsor
Ziauddin University
Responsible party
Fariha Ahmed (Resident anaesthesiology R4, Ziauddin University) — Principal investigator
First posted
Jul 31, 2025
Start date
Mar 12, 2025
Primary completion
Jun 4, 2025
Completion
Jun 4, 2025
Last update
Jul 31, 2025

Study contacts

Asma Abdus Salam, Consultant anaesthesiology
study chair · Ziauddin university clifton

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jul 2025. You cannot join it, but the record below documents what was studied.

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