Rheological studies of performance grade bitumens prepared by blending elastomeric SBS (styrene butadiene styrene) co-polymer in base bitumens

Kamal Kumar,Anand Singh,Samir K. Maity,Manoj Srivastava,Manisha Sahai,Raj K. Singh,Madhukar O. Garg 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.44 No.-

Performance of bituminous binder in terms of viscoelastic behavior can be improved by addition ofrequisite polymers. Two performance grade bituminous binder PG58 and PG64 were prepared byblending an elastomeric styrene butadiene styrene (SBS) co-polymer in 60/70 and 80/100 grade basebitumen respectively. The rheological properties of prepared bitumens have been studied by AR 1500 eXAsphalt Rheometer at minimum instrument inertia of 16.85 mNm2. Resistance to permanentdeformation or deformation resistance is also determined in terms of G0modified bitumen/G0base bitumen,G00modified bitumen/G00base bitumen and G*modified bitumen /G*base bitumen; which helps to predict the viscoelasticbehavior of bituminous binder.

Comparison of landmark and real-time ultrasound-guided epidural catheter placement in the pediatric population: a prospective randomized comparative trial

Mital Tanya,Kamal Manoj,Kumar Mritunjay,Kumar Rakesh,Bhatia Pradeep,Singariya Geeta 대한마취통증의학회 2021 Anesthesia and pain medicine Vol.16 No.4

Background: Epidural block placement in pediatric patients is technically challenging for anesthesiologists. The use of ultrasound (US) for the placement of an epidural catheter has shown promise. We compared landmark-guided and US-guided lumbar or lower thoracic epidural needle placement in pediatric patients.Methods: This prospective, randomized, comparative trial involved children aged 1–6 years who underwent abdominal and thoracic surgeries. Forty-five children were randomly divided into two groups using a computer-generated random number table, and group allocation was performed by the sealed opaque method into either landmark-guided (group LT) or real-time ultrasound-guided (group UT) epidural placement. The primary outcome was a comparison of the procedure time (excluding US probe preparation). Secondary outcomes were the number of attempts (re-insertion of the needle), bone contacts, needle redirection, skin-to-epidural distance using the US in both groups, success rate, and complications.Results: The median (interquartile range [IQR]) time to reach epidural space was 105.5 (297.0) seconds in group LT and 143.0 (150) seconds in group UT; P = 0.407). While the first attempt success rate was higher in the UT group (87.0% in UT vs. 40.9% in LT; P = 0.004), the number of bone contacts, needle redirections, and procedure-related complications were significantly lower. Conclusions: The use of US significantly reduced needle redirection, number of attempts, bone contact, and complications. There was no statistically significant difference in the time to access the epidural space between the US and landmark technique groups.

The Diagnostic Dilemma of Neurolymphomatosis

Ritu Shree,Manoj Kumar Goyal,Manish Modi,Balan Louis Gaspar,Bishan Dass Radotra,Chirag Kamal Ahuja,Bhagwant Rai Mittal,Gaurav Prakash 대한신경과학회 2016 Journal of Clinical Neurology Vol.12 No.3

Neurolymphomatosis (NL) defned as infltration of the central nervous system or the peripheral nervous system (PNS) by malignant lymphoma cells is a rare clinical entity. However, the increasing use of fuorodeoxyglucose positron-emission tomography (FDG-PET) and magnetic resonance imaging in evaluating PNS disorders is resulting in; this condition being recognized more frequently. Here; we report fve NL patients and review the current literature. We report five patients with non-Hodgkin’s lymphoma (NHL) and NL, all of whom were men aged 47–69 years. Te clinical presentation varied from symmetrical peripheral neuropathy to mononeuropathy. Peripheral neuropathy was the presenting manifestation of a systemic lymphoma in two patients (40%). Neuroimaging as well as whole-body FDG-PET helped in determining the correct diagnosis in all of the patients. NL is an unusual presentation of NHL resulting from infltration of the PNS by malignant lymphomatous cells. While evaluating peripheral neuropathy, a high degree of suspicion of NL is required since the presenting symptoms vary, conventional radiology has only modest sensitivity, and a pathological diagnosis is ofen difcult. FDG-PET helps in the early diagnosis and treatment of this condition.

Comparison of nebulized dexmedetomidine and ketamine for premedication in pediatric patients undergoing hernia repair surgery: a randomized comparative trial

Singariya Geeta,Malhotra Namita,Kamal Manoj,Jaju Rishabh,Aggarwal Shruti,Bihani Pooja 대한마취통증의학회 2022 Anesthesia and pain medicine Vol.17 No.2

Background: Allaying anxiety and providing calm children in the operating room is a challenging task for anesthesiologists. This study was designed to compare the use of nebulized dexmedetomidine and ketamine for premedication in pediatric patients under general anesthesia.Methods: Seventy patients, aged 2 to 8 years of both sexes, with American Society of Anesthesiologists physical status I/II scheduled for hernia repair surgery under general anesthesia, were randomized to two equal groups using a computer-generated random number table. Patients in group D received dexmedetomidine (2 µg/kg), and patients in group K received ketamine (2 mg/kg) by a jet nebulizer before the induction of anesthesia. The primary objective of the study was the level of sedation achieved at 30 min using the Ramsay sedation scale, and the secondary objectives were parental separation anxiety score, acceptance of the mask, hemodynamic variables, recovery time, incidence of emergence agitation, and adverse events. Results: Seventy patients were randomly divided into two equal groups and analyzed. The median Ramsay sedation score at 30 min was 3 (1–4) in group D and 3 (1–3) in group K (P = 0.002). Patients in group D had a more acceptable parental separation anxiety scale (P = 0.001) and a satisfactory mask acceptance scale (P = 0.042). Conclusions: Nebulized dexmedetomidine (2 µg/kg) provided better sedation along with smooth parental separation and satisfactory mask acceptance during induction of anesthesia with a similar emergence agitation profile and adverse reactions compared to nebulized ketamine.

Effect of addition of buprenorphine or dexamethasone to levobupivacaine on postoperative analgesia in ultrasound guided transversus abdominis plane block in patients undergoing unilateral inguinal hernia repair: a prospective randomized double blind cont

Satya Narayan Seervi,Geeta Singariya,Manoj Kamal,Kamlesh Kumari,Ashwini Siddeshwara,Shobha Ujwal 대한마취통증의학회 2019 Korean Journal of Anesthesiology Vol.72 No.3

Background: The transversus abdominis plane (TAP) block is an effective technique to block the thoracolumbar nerves innervating the anterolateral abdominal wall. This study was conducted to evaluate the analgesic efficacy and opioid consumption with the use of perineural buprenorphine or dexamethasone in TAP blocks after unilateral inguinal hernioplasties. Methods: This prospective, randomized, double-blinded, placebo-controlled study enrolled 93 patients scheduled for unilateral inguinal hernioplasty, followed by an ultrasound-guided TAP block. The participants were randomized into 3 groups (31 patients each). Group L received 20 ml 0.25% levobupivacaine + 1 ml normal saline (NS); group LB, 20 ml 0.25% levobupivacaine + 0.3 mg (1 ml) buprenorphine; and group LD, 20 ml 0.25% levobupivacaine + 4 mg (1 ml) dexamethasone. The patients were observed postoperatively for 24 h for first rescue analgesic requirement, total rescue analgesic consumption, and pain scores on the numeric rating scale (NRS). Results: The time to first rescue analgesic requirement was significantly longer in Group LB than in groups LD and L (688.87 ± 36.11 min, 601.45 ± 39.85 min, and 383.06 ± 36.21 min, respectively; P < 0.001). The mean total tramadol consumption in the first 24 h was the lowest in group LB (P < 0.001, L vs. LB / LD). Groups LB and LD displayed significantly lower NRS scores than group L (P < 0.001 both). Conclusions: Levobupivacaine with perineural buprenorphine in a TAP block after unilateral open inguinal hernioplasty facilitates prolonged analgesia and reduced requirement for rescue analgesics compared to perineural dexamethasone, without significant side effects.

Comparison of oropharyngeal leak pressure of I-gelTM and BlockbusterTM laryngeal mask airway in anaesthetized pediatric patients

Selvin Caren Candace,Singariya Geeta,Bihani Pooja,Kamal Manoj,Paliwal Naveen,Ujwal Shobha 대한마취통증의학회 2023 Anesthesia and pain medicine Vol.18 No.1

Background: Supraglottic airways (SGA) are increasing used in pediatric anesthesia. Among SGA i-gelTM is commonly used device in pediatric patients. The BlockbusterTM laryngeal mask airway (LMA) is latest addition in pediatric airway armamentarium. This study was conducted to compare the clinical performance of i-gelTM and BlockbusterTM LMA in pediatric patients. Methods: A total of 140 children aged 1–5 years, who were undergoing elective surgery, were randomized into two groups either i-gelTM (Group I) or BlockbusterTM LMA (Group B). Airway was secured with appropriate-sized LMA according to group allocation under general anesthesia. The primary objective of study was oropharyngeal leak pressures (OPLP), and secondary objectives were number of attempts of device insertion, success rate, ease of LMA insertion, hemodynamic parameters, and postoperative pharyngolaryngeal morbidities. Results: The mean OPLP was significantly higher for i-gelTM compared to BlockbusterTM LMA (27.97 ± 1.65 vs. 26.04 ± 2.12; P < 0.000). The devices were successfully inserted on the first attempt in 97.14% and 90% of the i-gelTM group and BlockbusterTM LMA groups respectively. The insertion time, ease of insertion, hemodynamic parameters and postoperative complications were comparable between groups. Conclusions: The i-gelTM was more efficacious device in term of OPLP than BlockbusterTM LMA for positive pressure ventilation in pediatric patients undergoing short surgical procedures under general anesthesia.

Evaluation of intrahepatic and extrahepatic biliary tree anatomy and its variation by magnetic resonance cholangiopancreatography in Odisha population: a retrospective study

Bikramaditya Swain,Ranjan Kumar Sahoo,Kamal Kumar Sen,Manoj Kumar G,Shylendra Singh Parihar,Roopak Dubey 대한해부학회 2020 Anatomy & Cell Biology Vol.53 No.1

Intrahepatic and extrahepatic anatomical knowledge is essential for pre procedural planning of liver transplantation, liver resection, complex biliary reconstruction and radiological biliary tree intervention. Indian data of biliary anatomy and its variation is scant in literature. The aim of our study is to find out the prevalence of common and uncommon pattern of biliary tree anatomy in magnetic resonance cholangiopancreatography (MRCP) in our population. A total of 1,038 cases of MRCP of population of Odisha were obtained from Picture Archiving and Communication System of the department and were reviewed by two senior radiologists for anatomical pattern and variations. The typical and most common pattern of right hepatic duct (RHD) branching was seen in 72.8% cases. The most common variant of RHD was trifurcation pattern of insertion of right anterior sectoral duct (RASD), right posterior sectoral duct and left hepatic duct (LHD) forming common hepatic duct (CHD) in 11.3% of cases. The common trunk of segment (SEG) II and III ducts joining the SEG IV duct was the most common LHD branching pattern in 90.3% of cases. The most common pattern of cystic duct was posterior insertion to middle third of CHD (42.8%). MRCP is the non-invasive imaging modality for demonstration of biliary duct morphology to prevent iatrogenic injury during hepatobiliary intervention and surgery.