EMERGENCY PARATHYROIDECTOMY UNDER COMBINED SUPERFICIAL AND DEEP CERVICAL PLEXUS BLOCK IN A PATIENT WITH HYPERPARATHYROID CRISIS: A CASE REPORT

Hyperparathyroid crisis is a serious and potentially life threatening complication of markedly increased serum calcium concentrations most commonly due to severe primary hyperparathyroidism. Identification and resection of the adenoma leads to cure of the disease. Parathy roidectomy for localized adenomas can be done under local anaesthesia and sedation or a cervical plexus block with sedation besides general anaesthesia. We report a case of successful management of a patient who presented with hyperparathyroid crisis and u nderwent emergency parathyroidectomy under combined deep and superficial cervical plexus bloc

EFFECT OF ADDITION OF DEXAMETHASONE TO ROPIVACAINE IN SUPRACLAVICULAR BRACHIAL PLEXUS BLOCK: A PROSPECTIVE, RANDOMISED, DOUBLE - BLIND STUDY

BACKGROUND: Addition of adjuvant has been widely used to prolong the duration of peripheral nerve block. We evaluated the effect of adding dexamethasone to ropivacaine in supraclavicular brachial plexus block. METHODS: Sixty patients of age group 18 - 60 years, scheduled for various elective upper limb surgeries under supraclavicular brachial block were divided into 2 groups in a randomized, double - blinded fashion. In group R (n=30), 30ml of 0.5% ropivacaine +1.5ml saline and in group D (n=30), 30ml of 0.5% ropivacaine +1.5ml dexamethasone (6mg) were given. The time of onset of motor and sensory blockade, duration of analgesia and pain scores were recorded. RESULTS: Demographic data and surgical characteristics were similar in both groups. The sensory and motor block onset time was earlier in group D as compared to group R (P<0.001). Duration of analgesia was longer in group D than in group R (P<0.001). Pain score in the two groups – group R had moderate to extreme pain while the group D had no pain to moderate pain in the first 24 hours postoperatively. CONCLUSION: Addition of dexamethasone to 0.5% ropivacaine in supraclavicular brachial plexus block speeds the onset and prolongs the duration of sensory and motor blockad

Green synthesis of biopolymer-silver nanoparticle nanocomposite: An optical sensor for ammonia detection

Biopolymer used for the production of nanoparticles (NPs) has attracted increasing attention. In the presence article we use aqueous solution of polysaccharide Cyamopsis tetragonaloba commonly known as guar gum (GG), from plants. GG acts as reductive preparation of silver nanoparticles which are found to be <10. nm in size. The uniformity of the NPs size was measured by the SEM and TEM, while a face centered cubic structure of crystalline silver nanoparticles was characterized using powder X-ray diffraction technique. Aqueous ammonia sensing study of polymer/silver nanoparticles nanocomposite (GG/AgNPs NC) was performed by optical method based on surface plasmon resonance (SPR). The performances of optical sensor were investigated which provide the excellent result. The response time of 2-3. s and the detection limit of ammonia solution, 1. ppm were found at room temperature. Thus, in future this room temperature optical ammonia sensor can be used for clinical and medical diagnosis for detecting low ammonia level in biological fluids, such as plasma, sweat, saliva, cerebrospinal liquid or biological samples in general for various biomedical applications in human. © 2012 Elsevier B.V

Nanocomposite based flexible ultrasensitive resistive gas sensor for chemical reactions studies

Room temperature operation, low detection limit and fast response time are highly desirable for a wide range of gas sensing applications. However, the available gas sensors suffer mainly from high temperature operation or external stimulation for response/recovery. Here, we report an ultrasensitive-flexible-silver-nanoparticle based nanocomposite resistive sensor for ammonia detection and established the sensing mechanism. We show that the nanocomposite can detect ammonia as low as 500 parts-per-trillion at room temperature in a minute time. Furthermore, the evolution of ammonia from different chemical reactions has been demonstrated using the nanocomposite sensor as an example. Our results demonstrate the proof-of-concept for the new detector to be used in several applications including homeland security, environmental pollution and leak detection in research laboratories and many others

Occurrence of Battarea stevenii (Lib.) Fr. (Tulostomataceae) in Mysore: A new record from south India

Volume: 92Start Page: 149End Page: 15