Publications by authors named "Ranjith Kumar Sivakumar"

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Comparison of two real-time ultrasound-guided dural puncture techniques for spinal anesthesia: a randomized clinical trial.
Manoj Kumar Karmakar, Ranjith Kumar Sivakumar, Chayapa Luckanachanthachote, Winnie Samy

Reg Anesth Pain Med· December 2025

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Minimum effective volume 90% for ultrasound-guided selective trunk block: A quantal bioassay.
Ranjith Kumar Sivakumar, Manoj Kumar Karmakar, Rosinni S L Wong, Winnie Samy

Eur J Anaesthesiol· September 2025

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Intertransverse process block to improve quality of recovery and pain management in cardiac surgery: Protocol for a double-blinded randomized controlled trial.
Henry Man Kin Wong, Ranjith Kumar Sivakumar, Wai Tat Wong, Albert Kam Ming Chan, Zion Ho Sum Yeung

PLoS One· September 2025

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Intertransverse process block (ITPB) at the retro-superior costotransverse ligament (retro-SCTL) space: Evaluation of local anesthetic spread using MRI and sensory blockade in healthy volunteers.
Pawinee Pangthipampai, Palanan Siriwanarangsun, Jatuporn Pakpirom, Ranjith Kumar Sivakumar, Manoj Kumar Karmakar

J Clin Anesth· February 2025

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Subpectoral plexus block to enhance surgical anesthesia produced by a multilevel thoracic paravertebral block for primary breast cancer surgery: a prospective randomized double-blind study.
Manoj Kumar Karmakar, Jatuporn Pakpirom, Banchobporn Songthamwat, Ranjith Kumar Sivakumar, Winnie Samy

Reg Anesth Pain Med· February 2025

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Ultrasound-guided thoracic paravertebral block using a transverse in-plane approach at the level of the inferior articular process: a retrospective review of complications.
Manoj Kumar Karmakar, Jatuporn Pakpirom, Ranjith Kumar Sivakumar, Winnie Samy

Reg Anesth Pain Med· October 2024

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Predictors of Failed Spinal Anesthesia After Intrathecal Injection of Local Anesthetic for Cesarean Delivery: Are We Omitting the Omission Variable Bias?
Ramya Ravi, Charlotte M V Dirven, Muthapillai Senthilnathan, Ranjith Kumar Sivakumar

Anesth Analg· October 2024

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Differential nerve blockade to explain anterior thoracic analgesia without sensory blockade after an erector spinae plane block may be wishful thinking.
Ranjith Kumar Sivakumar, Chayapa Luckanachanthachote, Manoj Kumar Karmakar

Reg Anesth Pain Med· July 2024

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High-definition ultrasound imaging of the paraneural sheath and fascial compartments surrounding the brachial plexus at the supraclavicular fossa.
Ranjith Kumar Sivakumar, Manoj Kumar Karmakar, Miguel Angel Reina, Xavier Sala-Blanch

Reg Anesth Pain Med· December 2023

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Variable anterior spread of local anesthetic after erector spinae plane block (ESPB): time to turn the spotlight on the 'retro-SCTL space'.
Ranjith Kumar Sivakumar, Manoj Kumar Karmakar

Reg Anesth Pain Med· September 2023

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Reply: 'clarifications sought on retro-SCTL space'.
Ranjith Kumar Sivakumar, Manoj Kumar Karmakar

Reg Anesth Pain Med· September 2023

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Quest for the Elusive Mechanism of Action for the Thoracic Paraspinal Nerve Block Techniques. Are We Ignoring the Anatomy of the "Retro Superior Costotransverse Ligament Space?".
Manoj Kumar Karmakar, Ranjith Kumar Sivakumar, Kenneth Sheah, Pawinee Pangthipampai, Per-Arne Lönnqvist

Anesth Analg· August 2023

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Reply to: modified first-targeted ultrasound window for selective brachial plexus trunk block may reduce the incidence of hemi-diaphragmatic paralysis.
Ranjith Kumar Sivakumar, Manoj Kumar Karmakar

Eur J Anaesthesiol· June 2023

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Spinal sonography and central neuraxial blocks.
Ranjith Kumar Sivakumar, Manoj Kumar Karmakar

Best Pract Res Clin Anaesthesiol· June 2023

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Manual vs. mechanical ventilation in patients with advanced airway during CPR.
Muthapillai Senthilnathan, Ramya Ravi, Srinivasan Suganya, Ranjith Kumar Sivakumar

Indian Heart J· November 2022

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Ultrasound-guided selective trunk block: Evaluation of ipsilateral sensorimotor block dynamics, hemidiaphragmatic function and efficacy for upper extremity surgery. A single-centre cohort study.
Ranjith Kumar Sivakumar, Winnie Samy, Jatuporn Pakpirom, Banchobporn Songthamwat, Manoj Kumar Karmakar

Eur J Anaesthesiol· October 2022

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HDL cholesterol levels and susceptibility to COVID-19.
Vignesh Chidambaram, Amudha Kumar, Marie Gilbert Majella, Bhavna Seth, Ranjith Kumar Sivakumar

EBioMedicine· August 2022

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Ultrasound-guided selective trunk block (SeTB): a cadaver anatomic study to evaluate the spread of dye after a simulated injection.
Banchobporn Songthamwat, Pobe Luangjarmekorn, Wirinaree Kampitak, Ranjith Kumar Sivakumar, Manoj Kumar Karmakar

Reg Anesth Pain Med· July 2022

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Real-Time Ultrasound-Guided Spinal Injection Using a Transverse In-Plane Dependent Technique: A Case Series.
Ranjith Kumar Sivakumar, Pornpatra Areeruk, Louis Y H Mok, Winnie Samy, Manoj Kumar Karmakar

A A Pract· July 2022

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The Retro Superior Costotransverse Ligament Space as a New Target for Ultrasound-Guided Intertransverse Process Block: A Report of 2 Cases.
Manoj Kumar Karmakar, Ranjith Kumar Sivakumar, Kenneth Sheah, Pawinee Pangthipampai, Per-Arne Lönnqvist

A A Pract· July 2022

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Association of Lipid Levels With COVID-19 Infection, Disease Severity and Mortality: A Systematic Review and Meta-Analysis.
Vignesh Chidambaram, Harinivaas Shanmugavel Geetha, Amudha Kumar, Marie Gilbert Majella, Ranjith Kumar Sivakumar

Front Cardiovasc Med· March 2022

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The Relationship Between Earlobe Creases and the Presence, Extent, and Severity of Coronary Artery Atherosclerosis: Points to Ponder.
Kirthika Ravi, Ranjith Kumar Sivakumar, Ambika Prasad Patra

Am J Forensic Med Pathol· December 2021

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Male Sex Is Associated With Worse Microbiological and Clinical Outcomes Following Tuberculosis Treatment: A Retrospective Cohort Study, a Systematic Review of the Literature, and Meta-analysis.
Vignesh Chidambaram, Nyan Lynn Tun, Marie Gilbert Majella, Jennie Ruelas Castillo, Samuel K Ayeh, Ranjith Kumar Sivakumar

Clin Infect Dis· November 2021

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Aspirin Use, Mechanical Ventilation, and Inhospital Mortality in Coronavirus Disease 2019: Are We Missing Something?
Muthapillai Senthilnathan, Ramya Ravi, Ranjith Kumar Sivakumar, Marie Gilbert Majella, Vignesh Chidambaram

Anesth Analg· August 2021

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Surgical anaesthesia for scapular surgery in a patient with ipsilateral thoracic injury.
Ramya Ravi, Suganya Srinivasan, Ranjith Kumar Sivakumar, Muthapillai Senthilnathan

Indian J Anaesth· August 2021

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