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5篇 您的检索式:作者名="Devi Prasad Samaddar"
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1Biochemical changes in the injured brain显示文摘Brain metabolism is an energy intensive phenomenon involving a wide spectrum of chemical intermediaries. Various injury states have a detrimental effect on the biochemical processes involved in the homeostatic and electrophysiological properties of the brain. The biochemical markers of brain injury are a recent addition in the armamentarium of neuro-clinicians and are being increasingly used in the routine management of neuropathological entities such as traumatic brain injury, stroke, subarachnoid haemorrhage and intracranial space occupying lesions. These markers are increasingly being used in assessing severity as well as in predicting the prognostic course of neuro-pathological lesions. S-100 protein, neuron specific enolase, creatinine phosphokinase isoenzyme BB and myelin basic protein are some of the biochemical markers which have been proven to have prognostic and clinical value in the brain injury. While S-100, glial fibrillary acidic protein and ubiquitin C terminal hydrolase are early biomarkers of neuronal injury and have the potential to aid in clinical decisionmaking in the initial management of patients presenting with an acute neuronal crisis, the other biomarkers are of value in predicting long-term complications and prognosis in such patients. In recent times cerebral microdialysis has established itself as a novel way of monitoring brain tissue biochemical metabolites such as glucose, lactate, pyruvate, glutamate and glycerol while small non-coding RNAs have presented themselves as potential markers of brain injury for future.Seelora Sahu Deb Sanjay Nag Amlan Swain Devi Prasad Samaddar 2017World Journal of Biological Chemistry2017,8,1:22
2Adjuvants to local anesthetics: Current understanding and future trends显示文摘Although beneficial in acute and chronic pain management, the use of local anaesthetics is limited by itsduration of action and the dose dependent adverse effects on the cardiac and central nervous system. Adjuvants or additives are often used with local anaesthetics for its synergistic effect by prolonging the duration of sensory-motor block and limiting the cumulative dose requirement of local anaesthetics. The armamentarium of local anesthetic adjuvants have evolved over time from classical opioids to a wide array of drugs spanning several groups and varying mechanisms of action. A large array of opioids ranging from morphine, fentanyl and sufentanyl to hydromorphone, buprenorphine and tramadol has been used with varying success. However, their use has been limited by their adverse effect like respiratory depression, nausea, vomiting and pruritus, especially with its neuraxial use. Epinephrine potentiates the local anesthetics by its antinociceptive properties mediated by alpha-2 adrenoreceptor activation along with its vasoconstrictive properties limiting the systemic absorption of local anesthetics. Alpha 2 adrenoreceptor antagonists like clonidine and dexmedetomidine are one of the most widely used class of local anesthetic adjuvants. Other drugs like steroids(dexamethasone), anti-inflammatory agents(parecoxib and lornoxicam), midazolam, ketamine, magnesium sulfate and neostigmine have also been used with mixed success. The concern regarding the safety profile of these adjuvants is due to its potential neurotoxicity and neurological complications which necessitate further research in this direction. Current research is directed towards a search for agents and techniques which would prolong local anaesthetic action without its deleterious effects. This includes novel approaches like use of charged molecules to produce local anaesthetic action(tonicaine and n butyl tetracaine), new age delivery mechanisms for prolonged bioavailability(liposomal, microspheres and cyclodextrin systems) and further studies with other drugs(adenosine, neuromuscular blockers, dextrans).Amlan Swain Deb Sanjay Nag Seelora Sahu Devi Prasad Samaddar 2017World Journal of Clinical Cases2017,5,8:18
3Vasopressors in obstetric anesthesia: A current perspective显示文摘Vasopressors are routinely used to counteract hypotension after neuraxial anesthesia in Obstetrics. The understanding of the mechanism of hypotension and the choice of vasopressor has evolved over the years to a point where phenylephrine has become the preferred vasopressor. Due to the absence of definitive evidence showing absolute clinical benefit of one over the other, especially in emergency and high-risk Cesarean sections, our choice of phenylephrine over the other vasopressors like mephentermine, metaraminol, and ephedrine is guided by indirect evidence on fetalacid-base status. This review article evaluates the present day evidence on the various vasopressors used in obstetric anesthesia today.Deb Sanjay Nag Devi Prasad Samaddar Abhishek Chatterjee Himanshu Kumar Ankur Dembla 2015World Journal of Clinical Cases2015,3,1:15
4Comparative analysis of APACHE-Ⅱ and P-POSSUM scoring systems in predicting postoperative mortality in patients undergoing emergency laparotomy显示文摘BACKGROUND Laparotomy remains one of the commonest emergency surgical procedures.Early prognostic evaluation would aid in selecting the high-risk patients for an aggressive treatment.Awareness about risks could potentially contribute to the quality of perioperative care and optimum utilization of resources.Portsmouth modification of Physiological and operative severity for the enumeration of mortality and morbidity (P-POSSUM) and the acute physiology and chronic health evaluation Ⅱ(APACHE-Ⅱ) have been the most widely used scoring systems for emergency laparotomies.It is always better to have a single scoring system to predict outcomes and audit healthcare organizations.AIM To compare the ability of APACHE-II and P-POSSUM to predict postoperative morbidity and mortality in patients undergoing emergency laparotomy.METHODS All patients undergoing emergency laparotomy at the Tata Main Hospital,Jamshedpur between December 2013 and November 2014 were included in the study.In this observational study,P-POSSUM and APACHE-Ⅱ scoring were done,and the outcome analysis evaluated with mortality being the primary outcome.RESULTS For P-POSSUM,at a cut off value of 63 to predict mortality using receiver operating characteristics curve analysis,the area under the curve was 0.989;and for APACHE-Ⅱ,at the cut off value of 24,the area under the curve was 0.965.CONCLUSION Because the ability of APACHE-Ⅱ to predict mortality was similar to P-POSSUM and APACHE-Ⅱ does not need scoring for intra-operative findings and histopathology reports,APACHE-Ⅱ can be used pre-operatively to assess the risk in patients undergoing emergency laparotomy.However,for audit purposes,either of the two scoring systems can be used.Deb Sanjay Nag Ankur Dembla Pratap Rudra Mahanty Shashi Kant Abhishek Chatterjee Devi Prasad Samaddar Parul Chugh 2019World Journal of Clinical Cases2019,7,16:5
5Sepsis associated delirium mimicking postoperative delirium as the initial presenting symptom of urosepsis in a patient who underwent nephrolithotomy显示文摘We report a case of 70 years old male who underwent percutaneous nephrolithotomy for renal calculi.After an uneventful recovery from anaesthesia,the patient developed delirium which manifested as restlessness,agitation,irritability and combative behavior.All other clinical parameters including arterial blood gas,chest X-ray and core temperature were normal and the patient remained haemodynamically stable.But 45 min later the patient developed florid manifestations of septic shock.He was aggressively managed in a protocolized manner as per the Surviving Sepsis Guidelines in the Critical Care Unit and recovered completely.There are no case reports showing postoperative delirium as the only initial presentation of severe sepsis,with other clinical parameters remaining normal.Both urosepsis and sepsis associated delirium have very high mortality.High index of suspicion and a protocolized approach in the management of sepsis can save lives.Deb Sanjay Nag Abhishek Chatterjee Devi Prasad Samaddar Harprit Singh 2016World Journal of Clinical Cases2016,4,5:1
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