1.Efficacy of intranasal sedation for pediatric dental procedures: a systematic review and meta-analysis
Kavitha SWAMINATHAN ; Sushmita SHAN ; Monika SRI. SS ; Apathsakayan RENUGALAKSHMI ; Ramanathan RAVI ; Selvakumar HARIDOSS
Journal of Dental Anesthesia and Pain Medicine 2025;25(1):1-13
Dental fear and anxiety management in children is considered one of the biggest challenges in pediatric dentistry.Intranasal sedation is a promising technique for managing unco-operative pediatric patients with rapid onset, ease of administration, and minimal invasiveness. We aimed to review the efficacy, onset time, duration, and behavioral success of intranasal sedation agents in pediatric dental procedures and identify the most effective regimens for clinical practice.This systematic review followed the PRISMA 2020 guidelines and included randomized controlled trials (RCTs) assessing intranasal sedation in children undergoing dental procedures. Primary outcomes were onset time, duration of sedation, and sedation success rates. The inclusion criteria were applied through search in six databases.Risk of bias was evaluated using the Cochrane RoB 2 tool. Meta-analyses were carried out using RevMan software, where pooled odds ratios and weighted mean differences were calculated on efficacy outcomes.Eighteen RCTs fulfilled the inclusion criteria, where intranasal agents such as midazolam, ketamine, dexmedetomidine, and their combinations were used. Meta analyses demonstrated intranasal sedation generally has a faster onset (moderate heterogeneity, I² = 40%) and is associated with greater success rates for achieving sedation than other methods. A combination of midazolam with ketamine or dexmedetomidine provided better results for both onset and behavioral success. The duration of sedation appears equivalent to oral or intravenous routes. Overall risk of bias was moderate due to blinding and selective reporting concerns.Midazolam, especially when combined with ketamine or dexmedetomidine, yielded promising results in relation to rapid onset and success of sedation. However, further large-scale RCTs are necessary to standardize dosing protocols and ensure that these findings are validated and optimized for clinical applications.
2.Efficacy of intranasal sedation for pediatric dental procedures: a systematic review and meta-analysis
Kavitha SWAMINATHAN ; Sushmita SHAN ; Monika SRI. SS ; Apathsakayan RENUGALAKSHMI ; Ramanathan RAVI ; Selvakumar HARIDOSS
Journal of Dental Anesthesia and Pain Medicine 2025;25(1):1-13
Dental fear and anxiety management in children is considered one of the biggest challenges in pediatric dentistry.Intranasal sedation is a promising technique for managing unco-operative pediatric patients with rapid onset, ease of administration, and minimal invasiveness. We aimed to review the efficacy, onset time, duration, and behavioral success of intranasal sedation agents in pediatric dental procedures and identify the most effective regimens for clinical practice.This systematic review followed the PRISMA 2020 guidelines and included randomized controlled trials (RCTs) assessing intranasal sedation in children undergoing dental procedures. Primary outcomes were onset time, duration of sedation, and sedation success rates. The inclusion criteria were applied through search in six databases.Risk of bias was evaluated using the Cochrane RoB 2 tool. Meta-analyses were carried out using RevMan software, where pooled odds ratios and weighted mean differences were calculated on efficacy outcomes.Eighteen RCTs fulfilled the inclusion criteria, where intranasal agents such as midazolam, ketamine, dexmedetomidine, and their combinations were used. Meta analyses demonstrated intranasal sedation generally has a faster onset (moderate heterogeneity, I² = 40%) and is associated with greater success rates for achieving sedation than other methods. A combination of midazolam with ketamine or dexmedetomidine provided better results for both onset and behavioral success. The duration of sedation appears equivalent to oral or intravenous routes. Overall risk of bias was moderate due to blinding and selective reporting concerns.Midazolam, especially when combined with ketamine or dexmedetomidine, yielded promising results in relation to rapid onset and success of sedation. However, further large-scale RCTs are necessary to standardize dosing protocols and ensure that these findings are validated and optimized for clinical applications.
3.Efficacy of intranasal sedation for pediatric dental procedures: a systematic review and meta-analysis
Kavitha SWAMINATHAN ; Sushmita SHAN ; Monika SRI. SS ; Apathsakayan RENUGALAKSHMI ; Ramanathan RAVI ; Selvakumar HARIDOSS
Journal of Dental Anesthesia and Pain Medicine 2025;25(1):1-13
Dental fear and anxiety management in children is considered one of the biggest challenges in pediatric dentistry.Intranasal sedation is a promising technique for managing unco-operative pediatric patients with rapid onset, ease of administration, and minimal invasiveness. We aimed to review the efficacy, onset time, duration, and behavioral success of intranasal sedation agents in pediatric dental procedures and identify the most effective regimens for clinical practice.This systematic review followed the PRISMA 2020 guidelines and included randomized controlled trials (RCTs) assessing intranasal sedation in children undergoing dental procedures. Primary outcomes were onset time, duration of sedation, and sedation success rates. The inclusion criteria were applied through search in six databases.Risk of bias was evaluated using the Cochrane RoB 2 tool. Meta-analyses were carried out using RevMan software, where pooled odds ratios and weighted mean differences were calculated on efficacy outcomes.Eighteen RCTs fulfilled the inclusion criteria, where intranasal agents such as midazolam, ketamine, dexmedetomidine, and their combinations were used. Meta analyses demonstrated intranasal sedation generally has a faster onset (moderate heterogeneity, I² = 40%) and is associated with greater success rates for achieving sedation than other methods. A combination of midazolam with ketamine or dexmedetomidine provided better results for both onset and behavioral success. The duration of sedation appears equivalent to oral or intravenous routes. Overall risk of bias was moderate due to blinding and selective reporting concerns.Midazolam, especially when combined with ketamine or dexmedetomidine, yielded promising results in relation to rapid onset and success of sedation. However, further large-scale RCTs are necessary to standardize dosing protocols and ensure that these findings are validated and optimized for clinical applications.
4.Mechanical Thrombectomy for In-Hospital Onset Stroke: A Comparative Systematic Review and Meta-Analysis
Melika AMOUKHTEH ; Amir HASSANKHANI ; Sherief GHOZY ; Parya VALIZADEH ; Payam JANNATDOUST ; Cem BILGIN ; Ramanathan KADIRVEL ; David F. KALLMES
Journal of Stroke 2024;26(1):41-53
Background:
and Purpose In-hospital onset stroke (IHOS) accounts for a significant proportion of large vessel occlusion acute ischemic strokes, leading to worse outcomes due to delays in evaluation and treatment. Limited data is available on the effectiveness of mechanical thrombectomy in IHOS patients. This study aims to assess the safety and efficacy of mechanical thrombectomy for patients with IHOS and compare the outcomes with those of community-onset strokes (COS).
Methods:
We conducted a systematic review and meta-analysis following established guidelines, by searching PubMed, Scopus, Web of Science, and Embase databases up to April 11, 2023. Eligible studies reporting outcomes of interest were included, and relevant data was extracted and analyzed using Stata software version 17.0.
Results:
In a meta-analysis of nine studies, comprising 540 cases of IHOS and 5,744 cases of COS, IHOS cases had a significantly lower rate of good functional outcomes on follow-up (35.46% vs. 40.74%, P<0.01) and a higher follow-up mortality rate (26.29% vs. 18.08%, P<0.01) compared to COS patients. Both groups had comparable successful recanalization rates (IHOS: 79.32% vs. COS: 81.44%, P=0.11), incidence rates of periprocedural complications (IHOS: 15.10%, COS: 12.96%, P=0.78), and symptomatic intracranial hemorrhage (IHOS: 6.24%, COS: 6.88%, P=0.67). It is worth noting that much of the observed effect size for mortality and good functional outcomes on follow-up was derived from only one and two studies, respectively.
Conclusion
While the current literature suggests that mechanical thrombectomy is a safe and effective treatment for IHOS, further research is necessary to comprehensively evaluate its impact, particularly during follow-up.
5.A Comparative Assessment of Comprehensive Trail Making Test and Wisconsin Card Sorting Test Among Alcohol Dependence Patients
Kandappa Nachimuthu Lavanya ; Rajkumar Ramanathan
Malaysian Journal of Medicine and Health Sciences 2023;19(No.6):111-117
Introduction: Alcohol, when used frequently, accelerates the ageing process, causes brain damage, and results in a
reduced volume of grey and white matter, leading to frontal lobe abnormalities. The neurotoxicity resulting from alcohol overuse affects the higher functions of the brain. This study aimed to evaluate the effect of alcohol dependence
on the executive functioning of the brain. Methods: This study was carried out as a case-control study among 60
patients with alcohol dependence and 60 controls. Assessment of executive function was carried out using the Comprehensive trail-making test (CTMT) and the Wisconsin card sorting test (WCST). Comparison between the alcohol
dependence group and normal healthy controls were calculated using the Mann-Whitney U test as data followed a
non-parametric distribution. Results: The mean age of the participants among the cases and controls was 38.3±5.5
years and 37.8±5.4 years, respectively. The results showed a significant difference in both WCST and CTMT between
cases and controls (p<0.05). Conclusion: This study concludes that there was an impaired performance in executive
functions in alcohol- dependence patients in early abstinence compared to normal controls showing frontal lobe
impairment in alcohol-dependence patients.
6.Mandibular midline osteotomy for correction of bimaxillary transverse discrepancy: a technical note
Mrunalini RAMANATHAN ; Rie SONOYAMA-OSAKO ; Yukiho SHIMAMURA ; Taro OKUI ; Takahiro KANNO
Journal of the Korean Association of Oral and Maxillofacial Surgeons 2023;49(3):107-113
Bimaxillary transverse width discrepancies are commonly encountered among patients with dentofacial deformities. Skeletal discrepancies should be diagnosed and managed appropriately with possible surgical corrections. Transverse width deficiencies can present in varieties of combinations involving the maxilla and mandible. We observed that in a significant proportion of cases, the maxilla is normal, and the mandible showed deficiency in the transverse dimension after pre-surgical orthodontics. We designed novel osteotomy techniques to enhance mandibular transverse width correction, as well as simultaneous genioplasty. Chin repositioning along any plane is applicable concomitant with mandibular midline arch widening. When there is a requirement for larger widening, gonial angle reduction may be necessary. This technical note focuses on key points in management of patients with transversely deficient mandible and the factors affecting the outcome and stability. Further research on the maximum amount of stable widening will be conducted. We believe that developing evidence-based additional modifications to existing conventional surgical procedures can aid precise correction of complex dentofacial deformities.
8.Psychoses of Epilepsy in Pregnancy: A Case Report
Mario FAHED ; Seethalakshmi RAMANATHAN
Clinical Psychopharmacology and Neuroscience 2021;19(2):388-390
To discuss the unique relationship between psychosis and seizures in a young individual, who is also pregnant. Psychosis of epilepsy can present in multitude of ways, including pre-ictal, ictal, post-ictal, chronic interictal, and forced normalization psychosis.
9.Severe COVID-19 and coagulopathy: A systematic review and meta-analysis.
Saikat MITRA ; Ryan Ruiyang LING ; Isabelle Xiaorui YANG ; Wynne Hsing POON ; Chuen Seng TAN ; Paul MONAGLE ; Graeme MACLAREN ; Kollengode RAMANATHAN
Annals of the Academy of Medicine, Singapore 2021;50(4):325-335
INTRODUCTION:
Coronavirus disease 2019 (COVID-19)-induced coagulopathy (CIC) has been widely reported in the literature. However, the spectrum of abnormalities associated with CIC has been highly variable.
METHODS:
We conducted a systematic review of the literature (until 1 June 2020) to assess CIC and disease severity during the early COVID-19 pandemic. Primary outcomes were pooled mean differences in platelet count, D-dimer level, prothrombin time, activated partial thromboplastin time (aPTT) and fibrinogen level between non-severe and severe patients, stratified by degree of hypoxaemia or those who died. The risk factors for CIC were analysed. Random-effects meta-analyses and meta-regression were performed using R version 3.6.1, and certainty of evidence was rated using the Grading of Recommendation, Assessment, Development, and Evaluation approach.
RESULTS:
Of the included 5,243 adult COVID-19 patients, patients with severe COVID-19 had a significantly lower platelet count, and higher D-dimer level, prothrombin time and fibrinogen level than non-severe patients. Pooled mean differences in platelet count (-19.7×109/L, 95% confidence interval [CI] -31.7 to -7.6), D-dimer level (0.8μg/mL, 95% CI 0.5-1.1), prothrombin time (0.4 second, 95% CI 0.2-0.6) and fibrinogen level (0.6g/L, 95% CI 0.3-0.8) were significant between the groups. Platelet count and D-dimer level were significant predictors of disease severity on meta-regression analysis. Older men had higher risks of severe coagulopathic disease.
CONCLUSION
Significant variability in CIC exists between non-severe and severe patients, with platelet count and D-dimer level correlating with disease severity. Routine monitoring of all coagulation parameters may help to assess CIC and decide on the appropriate management.
10.Predictors and outcomes of high-flow nasal cannula failure following extubation: A multicentre observational study.
Amit KANSAL ; Shekhar DHANVIJAY ; Andrew LI ; Jason PHUA ; Matthew Edward COVE ; Wei Jun Dan ONG ; Ser Hon PUAH ; Vicky NG ; Qiao Li TAN ; Julipie Sumampong MANALANSAN ; Michael Sharey Nocon ZAMORA ; Michael Camba VIDANES ; Juliet Tolentino SAHAGUN ; Juvel TACULOD ; Addy Yong Hui TAN ; Chee Kiang TAY ; Yew Woon CHIA ; Duu Wen SEWA ; Meiying CHEW ; Sennen J W LEW ; Shirley GOH ; Jonathan Jit Ern TAN ; Kollengode RAMANATHAN ; Amartya MUKHOPADHYAY ; Kay Choong SEE
Annals of the Academy of Medicine, Singapore 2021;50(6):467-473
INTRODUCTION:
Despite adhering to criteria for extubation, up to 20% of intensive care patients require re-intubation, even with use of post-extubation high-flow nasal cannula (HFNC). This study aims to identify independent predictors and outcomes of extubation failure in patients who failed post-extubation HFNC.
METHODS:
We conducted a multicentre observational study involving 9 adult intensive care units (ICUs) across 5 public hospitals in Singapore. We included patients extubated to HFNC following spontaneous breathing trials. We compared patients who were successfully weaned off HFNC with those who failed HFNC (defined as re-intubation ≤7 days following extubation). Generalised additive logistic regression analysis was used to identify independent risk factors for failed HFNC.
RESULTS:
Among 244 patients (mean age: 63.92±15.51 years, 65.2% male, median APACHE II score 23.55±7.35), 41 (16.8%) failed HFNC; hypoxia, hypercapnia and excessive secretions were primary reasons. Stroke was an independent predictor of HFNC failure (odds ratio 2.48, 95% confidence interval 1.83-3.37). Failed HFNC, as compared to successful HFNC, was associated with increased median ICU length of stay (14 versus 7 days,
CONCLUSION
Post-extubation HFNC failure, especially in patients with stroke as a comorbidity, remains a clinical challenge and predicts poorer clinical outcomes. Our observational study highlights the need for future prospective trials to better identify patients at high risk of post-extubation HFNC failure.
Adult
;
Airway Extubation
;
Cannula
;
Critical Care
;
Female
;
Humans
;
Intensive Care Units
;
Male
;
Middle Aged
;
Respiratory Insufficiency/therapy*
;
Singapore/epidemiology*


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