1.Ultrasound-Guided Retrograde Internal Jugular Venous Puncture in Neurointerventional Procedures
Jan Mohd SUHAIL ; Santhosh Babu Kannan BHARATHY ; Shikhar GARG ; Shoban HARIDASS ; Shyamkumar Nidugala KESHAVA
Neurointervention 2026;21(1):29-34
Purpose:
To evaluate the safety and efficacy of ultrasound-guided retrograde internal jugular venous (IJV) puncture in neurointerventional procedures.
Materials and Methods:
This single-centre retrospective study evaluates data collected over 20 years. All punctures were performed under general anaesthesia using ultrasound guidance. The data were analyzed to assess patient demographics, indications and potential advantages, the technique of puncture, safety, outcomes, and complications associated with such punctures.
Results:
The study included 60 patients (males: n=38, 63%; females: n=22, 37%). The median age was 33 years (range 13–73 years). A total of 74 retrograde jugular punctures were performed. Isolated right-sided punctures were done in 31 patients (52%), isolated left-sided punctures in 18 (30%), and 11 patients (18%) underwent bilateral punctures. The preferred access needle was an 18G needle; however, micropuncture access was used in some patients. No inadvertent arterial punctures were encountered. The most common indication was mechanical thrombectomy for cerebral venous thrombosis (62%). Other indications included transvenous embolization of carotid-cavernous fistulae (16%), embolization of cerebral dural arteriovenous fistulae (8%), inferior petrosal sinus sampling (8%), and cerebral venous sinus angioplasty or stenting (6%). In all procedures, the expected technical outcome was achieved.
Conclusion
Ultrasound-guided retrograde IJV puncture is a safe and effective method for accessing neurovascular pathologies requiring a transvenous approach. Based on our experience, this access has been routinely used without any major complications. We foresee the technique being accepted on a larger scale in the future.
2.Autologous bone marrow mononuclear cell administration in a large cohort of 1,011 patients with autism spectrum disorder:a retrospective observational study
Alok SHARMA ; Nandini GOKULCHANDRAN ; Hemangi SANE ; Pooja KULKARNI ; Krishnaveni KANNAN ; Zubiya SHAIKH ; Hema BIJU ; Amruta PARANJAPE ; Myola D’SA ; Prerna BADHE
Clinical Transplantation and Research 2026;40(1):116-128
Background:
This retrospective observational study analyzed the therapeutic efficacy of autologous bone marrow mononuclear cells (BMMNCs) in a large cohort of patients with autism spectrum disorder (ASD).
Methods:
Overall, 1,011 patients with ASD who received intrathecal administration of autologous BMMNCs were included. Changes in symptoms and outcome measures—the Indian Scale of Autism Assessment (ISAA) and Childhood Autism Rating Scale (CARS)— were recorded. Brain positron emission tomography computed tomography (PET/CT) was used to objectively assess changes in brain metabolism.
Results:
At a mean follow-up of 19.3 months, 90.6% of patients showed improvement after cell therapy. Symptomatic improvements were observed in attention and concentration, command following, eye contact, sitting tolerance, social interaction, hyperactivity, communication, speech, stereotypical behavior, aggressiveness, and self-injurious behavior. Patients who received multiple doses of cell therapy demonstrated better outcomes, and improvements were seen across all age groups and regardless of disease severity. Changes in ISAA and CARS scores were statistically significant (P<0.05).Comparative PET/CT scans of 401 patients revealed improved metabolism in the amygdala, hippocampus, parahippocampal gyrus, caudate nucleus, cerebellum, mesial temporal lobe, thalamus, and superior and middle temporal poles, which corresponded to symptomatic improvements. No major adverse events were reported. Nine of the 1,011 patients experienced seizures, four of whom had a prior history. These events were managed with medication, with improvements still observed in the nine patients.
Conclusions
Intrathecal transplantation of autologous BMMNCs, combined with neurorehabilitation, yields positive outcomes for patients with ASD. This approach helps reduce the degree of impairment and improves quality of life.
3.Dry Medical Thoracoscopy with Artificial Pneumothorax Induction Using Veress Needle
Nai-Chien HUAN ; Sze Shyang KHO ; Larry Ellee NYANTI ; Hema Yamini RAMARMUTY ; Muhammad Aklil Abd RAHIM ; Rong Lih HO ; Shan Min LO ; Siew Teck TIE ; Kunji Kannan Sivaraman KANNAN
Tuberculosis and Respiratory Diseases 2025;88(1):181-189
Background:
In the absence of significant pleural effusion, conventional medical thoracoscopy (MT) is often not feasible due to the risk of lung injury. Dry MT mitigates these risks by inducing artificial pneumothorax through needle insufflation or blunt dissection. Although the Veress needle is commonly used by surgeons to create pneumoperitoneum before laparoscopic surgeries, its application in dry MT has not been widely reported in recent times.
Methods:
We report on a series of 31 patients who underwent dry MT with artificial pneumothorax induction using Veress needle under thoracic ultrasonography (TUS) guidance. A procedure was considered technically successful if it met all the following criteria: successful pneumothorax induction, allowing smooth insertion of the semi-rigid thoracoscope; absence of immediate significant procedural-related complications; and no delayed complications such as persistent air leaks, defined as leakage lasting more than 5 days necessitating extended chest tube placement.
Results:
Complete pneumothorax induction was achieved in 25 cases, resulting in an 80.6% technical success rate; however, biopsies were successfully performed in all cases. The most frequent histopathological diagnoses were malignancy (n=9, 29.0%), followed by inflammatory pleuritis (n=8, 25.8%) and tuberculosis (n=8, 25.8%). No procedural complications were reported.
Conclusion
These results indicate that TUS-guided dry MT utilizing a Veress needle is technically feasible and secure when performed by experienced MT practitioners in TUS.
4.‘Think Drink’ approach to minimize unnecessary preoperative fasting: 18 years audit experience
Katarzyna A. R. MACDOUGALL ; Shahnoor E. S. BUSHRA ; Santhana G. KANNAN
Korean Journal of Anesthesiology 2025;78(3):272-278
Background:
Fasting guidelines have long recommended that patients can have clear fluids until 2 h prior to surgery. Multiple audits in our institution showed that patients had prolonged fluid fasting duration, despite being given preoperative instructions. This paper presents the results of audits in our institution relating to fasting since 2004 and the outcome of interventions undertaken.
Methods:
Audits conducted in 2004, 2008, 2018, 2021, and 2022 were reviewed, with a focus on fasting duration for clear fluids. Interventions that led to significant improvements were identified.
Results:
The median fasting duration for clear fluids was 8 h, 8 h 42 min, and 7 h 42 min in 2004, 2008, and January 2018, respectively. The approach of giving patients a ‘welcome drink’ of water and allowing sips of water up to the time of being called upon to the theater was introduced in 2018 (Think Drink). This resulted in dramatic reduction of fasting duration to 2 h 15 min. However, repeat audit in 2021 showed slippage requiring additional interventions in the form of staff education for newcomers and reinforcement at staff huddles that reduced the fasting duration down to 2 h. There were no instances of aspiration or regurgitation after the introduction of Think Drink.
Conclusions
Allowing sips of water until being called to the theater with a Think Drink approach successfully reduced unnecessary fasting by patients. Staff and patient education were also required to sustain success. Fasting duration should be considered a ‘Quality of Service Indicator’ and periodic audit should be mandated.
5.‘Think Drink’ approach to minimize unnecessary preoperative fasting: 18 years audit experience
Katarzyna A. R. MACDOUGALL ; Shahnoor E. S. BUSHRA ; Santhana G. KANNAN
Korean Journal of Anesthesiology 2025;78(3):272-278
Background:
Fasting guidelines have long recommended that patients can have clear fluids until 2 h prior to surgery. Multiple audits in our institution showed that patients had prolonged fluid fasting duration, despite being given preoperative instructions. This paper presents the results of audits in our institution relating to fasting since 2004 and the outcome of interventions undertaken.
Methods:
Audits conducted in 2004, 2008, 2018, 2021, and 2022 were reviewed, with a focus on fasting duration for clear fluids. Interventions that led to significant improvements were identified.
Results:
The median fasting duration for clear fluids was 8 h, 8 h 42 min, and 7 h 42 min in 2004, 2008, and January 2018, respectively. The approach of giving patients a ‘welcome drink’ of water and allowing sips of water up to the time of being called upon to the theater was introduced in 2018 (Think Drink). This resulted in dramatic reduction of fasting duration to 2 h 15 min. However, repeat audit in 2021 showed slippage requiring additional interventions in the form of staff education for newcomers and reinforcement at staff huddles that reduced the fasting duration down to 2 h. There were no instances of aspiration or regurgitation after the introduction of Think Drink.
Conclusions
Allowing sips of water until being called to the theater with a Think Drink approach successfully reduced unnecessary fasting by patients. Staff and patient education were also required to sustain success. Fasting duration should be considered a ‘Quality of Service Indicator’ and periodic audit should be mandated.
6.Dry Medical Thoracoscopy with Artificial Pneumothorax Induction Using Veress Needle
Nai-Chien HUAN ; Sze Shyang KHO ; Larry Ellee NYANTI ; Hema Yamini RAMARMUTY ; Muhammad Aklil Abd RAHIM ; Rong Lih HO ; Shan Min LO ; Siew Teck TIE ; Kunji Kannan Sivaraman KANNAN
Tuberculosis and Respiratory Diseases 2025;88(1):181-189
Background:
In the absence of significant pleural effusion, conventional medical thoracoscopy (MT) is often not feasible due to the risk of lung injury. Dry MT mitigates these risks by inducing artificial pneumothorax through needle insufflation or blunt dissection. Although the Veress needle is commonly used by surgeons to create pneumoperitoneum before laparoscopic surgeries, its application in dry MT has not been widely reported in recent times.
Methods:
We report on a series of 31 patients who underwent dry MT with artificial pneumothorax induction using Veress needle under thoracic ultrasonography (TUS) guidance. A procedure was considered technically successful if it met all the following criteria: successful pneumothorax induction, allowing smooth insertion of the semi-rigid thoracoscope; absence of immediate significant procedural-related complications; and no delayed complications such as persistent air leaks, defined as leakage lasting more than 5 days necessitating extended chest tube placement.
Results:
Complete pneumothorax induction was achieved in 25 cases, resulting in an 80.6% technical success rate; however, biopsies were successfully performed in all cases. The most frequent histopathological diagnoses were malignancy (n=9, 29.0%), followed by inflammatory pleuritis (n=8, 25.8%) and tuberculosis (n=8, 25.8%). No procedural complications were reported.
Conclusion
These results indicate that TUS-guided dry MT utilizing a Veress needle is technically feasible and secure when performed by experienced MT practitioners in TUS.
7.‘Think Drink’ approach to minimize unnecessary preoperative fasting: 18 years audit experience
Katarzyna A. R. MACDOUGALL ; Shahnoor E. S. BUSHRA ; Santhana G. KANNAN
Korean Journal of Anesthesiology 2025;78(3):272-278
Background:
Fasting guidelines have long recommended that patients can have clear fluids until 2 h prior to surgery. Multiple audits in our institution showed that patients had prolonged fluid fasting duration, despite being given preoperative instructions. This paper presents the results of audits in our institution relating to fasting since 2004 and the outcome of interventions undertaken.
Methods:
Audits conducted in 2004, 2008, 2018, 2021, and 2022 were reviewed, with a focus on fasting duration for clear fluids. Interventions that led to significant improvements were identified.
Results:
The median fasting duration for clear fluids was 8 h, 8 h 42 min, and 7 h 42 min in 2004, 2008, and January 2018, respectively. The approach of giving patients a ‘welcome drink’ of water and allowing sips of water up to the time of being called upon to the theater was introduced in 2018 (Think Drink). This resulted in dramatic reduction of fasting duration to 2 h 15 min. However, repeat audit in 2021 showed slippage requiring additional interventions in the form of staff education for newcomers and reinforcement at staff huddles that reduced the fasting duration down to 2 h. There were no instances of aspiration or regurgitation after the introduction of Think Drink.
Conclusions
Allowing sips of water until being called to the theater with a Think Drink approach successfully reduced unnecessary fasting by patients. Staff and patient education were also required to sustain success. Fasting duration should be considered a ‘Quality of Service Indicator’ and periodic audit should be mandated.
8.Dry Medical Thoracoscopy with Artificial Pneumothorax Induction Using Veress Needle
Nai-Chien HUAN ; Sze Shyang KHO ; Larry Ellee NYANTI ; Hema Yamini RAMARMUTY ; Muhammad Aklil Abd RAHIM ; Rong Lih HO ; Shan Min LO ; Siew Teck TIE ; Kunji Kannan Sivaraman KANNAN
Tuberculosis and Respiratory Diseases 2025;88(1):181-189
Background:
In the absence of significant pleural effusion, conventional medical thoracoscopy (MT) is often not feasible due to the risk of lung injury. Dry MT mitigates these risks by inducing artificial pneumothorax through needle insufflation or blunt dissection. Although the Veress needle is commonly used by surgeons to create pneumoperitoneum before laparoscopic surgeries, its application in dry MT has not been widely reported in recent times.
Methods:
We report on a series of 31 patients who underwent dry MT with artificial pneumothorax induction using Veress needle under thoracic ultrasonography (TUS) guidance. A procedure was considered technically successful if it met all the following criteria: successful pneumothorax induction, allowing smooth insertion of the semi-rigid thoracoscope; absence of immediate significant procedural-related complications; and no delayed complications such as persistent air leaks, defined as leakage lasting more than 5 days necessitating extended chest tube placement.
Results:
Complete pneumothorax induction was achieved in 25 cases, resulting in an 80.6% technical success rate; however, biopsies were successfully performed in all cases. The most frequent histopathological diagnoses were malignancy (n=9, 29.0%), followed by inflammatory pleuritis (n=8, 25.8%) and tuberculosis (n=8, 25.8%). No procedural complications were reported.
Conclusion
These results indicate that TUS-guided dry MT utilizing a Veress needle is technically feasible and secure when performed by experienced MT practitioners in TUS.
9.‘Think Drink’ approach to minimize unnecessary preoperative fasting: 18 years audit experience
Katarzyna A. R. MACDOUGALL ; Shahnoor E. S. BUSHRA ; Santhana G. KANNAN
Korean Journal of Anesthesiology 2025;78(3):272-278
Background:
Fasting guidelines have long recommended that patients can have clear fluids until 2 h prior to surgery. Multiple audits in our institution showed that patients had prolonged fluid fasting duration, despite being given preoperative instructions. This paper presents the results of audits in our institution relating to fasting since 2004 and the outcome of interventions undertaken.
Methods:
Audits conducted in 2004, 2008, 2018, 2021, and 2022 were reviewed, with a focus on fasting duration for clear fluids. Interventions that led to significant improvements were identified.
Results:
The median fasting duration for clear fluids was 8 h, 8 h 42 min, and 7 h 42 min in 2004, 2008, and January 2018, respectively. The approach of giving patients a ‘welcome drink’ of water and allowing sips of water up to the time of being called upon to the theater was introduced in 2018 (Think Drink). This resulted in dramatic reduction of fasting duration to 2 h 15 min. However, repeat audit in 2021 showed slippage requiring additional interventions in the form of staff education for newcomers and reinforcement at staff huddles that reduced the fasting duration down to 2 h. There were no instances of aspiration or regurgitation after the introduction of Think Drink.
Conclusions
Allowing sips of water until being called to the theater with a Think Drink approach successfully reduced unnecessary fasting by patients. Staff and patient education were also required to sustain success. Fasting duration should be considered a ‘Quality of Service Indicator’ and periodic audit should be mandated.
10.Dry Medical Thoracoscopy with Artificial Pneumothorax Induction Using Veress Needle
Nai-Chien HUAN ; Sze Shyang KHO ; Larry Ellee NYANTI ; Hema Yamini RAMARMUTY ; Muhammad Aklil Abd RAHIM ; Rong Lih HO ; Shan Min LO ; Siew Teck TIE ; Kunji Kannan Sivaraman KANNAN
Tuberculosis and Respiratory Diseases 2025;88(1):181-189
Background:
In the absence of significant pleural effusion, conventional medical thoracoscopy (MT) is often not feasible due to the risk of lung injury. Dry MT mitigates these risks by inducing artificial pneumothorax through needle insufflation or blunt dissection. Although the Veress needle is commonly used by surgeons to create pneumoperitoneum before laparoscopic surgeries, its application in dry MT has not been widely reported in recent times.
Methods:
We report on a series of 31 patients who underwent dry MT with artificial pneumothorax induction using Veress needle under thoracic ultrasonography (TUS) guidance. A procedure was considered technically successful if it met all the following criteria: successful pneumothorax induction, allowing smooth insertion of the semi-rigid thoracoscope; absence of immediate significant procedural-related complications; and no delayed complications such as persistent air leaks, defined as leakage lasting more than 5 days necessitating extended chest tube placement.
Results:
Complete pneumothorax induction was achieved in 25 cases, resulting in an 80.6% technical success rate; however, biopsies were successfully performed in all cases. The most frequent histopathological diagnoses were malignancy (n=9, 29.0%), followed by inflammatory pleuritis (n=8, 25.8%) and tuberculosis (n=8, 25.8%). No procedural complications were reported.
Conclusion
These results indicate that TUS-guided dry MT utilizing a Veress needle is technically feasible and secure when performed by experienced MT practitioners in TUS.

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