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21.
The crystal structure and nuclear magnetic resonance (NMR) spectra and assignments of celiprolol, N-[3-acetyl-4[3-[N-t-butylamino-2-hydroxypropoxy]phenyl]-N, N-diethylurea, are reported. Celiprolol crystallizes in the monoclinic space group, P2l/a, with a = 9.081(2), b = 13.800(4), and c = 17.471(5) Å and = 95.04(2)°. Structure was solved by direct methods; structure refinement to R of 0.058. Intermolecular hydrogen-bonding in the crystal is discussed. The 1H, 13C, and two-dimensional (2D) NMR spectra of the hydrochloride have been obtained and definitive signal assignments made. 相似文献
22.
23.
D. A. Chaukar S. G. Prabhudesai N. L. Bhambhani K. A. Pathak V. D. Sanghvi 《Indian journal of otolaryngology and head and neck surgery》2006,58(1):92-94
Most thyroid cancers (90–95%) are well differentiated. Well differentiated cancers of the thyroid are usually confined to
the thyroid capsule, making them amenable to isolated thyroid resection. Invasion of the upper aerodigestive tract by these
cancers is infrequent and hypopharyngeal invasion is still rare. We report a 51 year old man with thyroid cancer invading
the hypopharynx, who was successfully managed with complete resection along with a partial pharyngectomy. He is asymptomatic
and disease free eighteen months after surgery. We advocate aggressive surgical extirpation of thyroid carcinoma invading
the upper aerodigestive tract. 相似文献
24.
Severe hypertension sometimes improves with treatment of bradycardia but this phenomenon is under‐reported. Here, an elderly gentleman with complete heart block and a hypertensive emergency was refractory to medical therapies and blood pressure only improved following pacemaker implantation. We discuss the possible mechanisms relating to heart rate and artificial pacing. 相似文献
25.
Yu-Kyung Jung Alam Venugopal Narendra Kumar Byong-Hun Jeon Eun Young Kim Taewoo Yum Ki-Jung Paeng 《Materials》2022,15(9)
Perchlorate contamination in groundwater poses a serious threat to human health, owing to its interference with thyroid function. The high solubility and poor adsorption of perchlorate ions make perchlorate degradation a necessary technology in groundwater contaminant removal. Here, we demonstrate the perchlorate degradation by employing nano zero-valent iron (nZVI) embedded in biocompatible silica alginate hybrid beads fabricated using calcium chloride (1 wt%) as a crosslinker. The concentration of precursors (sodium alginate, sodium silicate) for bead formation was standardized by evaluating the thermal stability of beads prepared at different sodium silicate and alginate concentrations. Thermal degradation of silica alginate hybrid samples showed a stepwise weight loss during the thermal sweep, indicating different types of reactions that occur during the degradation process. The formation of the silica alginate hybrid structure was confirmed by FT-IR spectroscopy. Scanning electron microscopy (SEM) data revealed the surface morphology of silica alginate hybrid changes by varying sodium silicate and alginate concentrations. nZVI-loaded alginate–silicate polymer bead (nZVI-ASB) exhibited excellent perchlorate degradation efficiency by degrading 20 ppm of perchlorate within 4 h. Our study also showed the perchlorate degradation efficiency of nZVI-ASB is maximum at neutral pH conditions. 相似文献
26.
AbstractSpinal cord damage from radiographic contrast material has been known to occur in both spinal and nonspinal angiographic procedures. Reported here is cervical spinal cord injury (SCI) during vertebral angiography. During the procedure, the patient displayed signs of acute cervical spinal cord irritation that should have been taken as a warning of impending injury. Autopsy 9 years later showed evidence of central cervical spinal cord necrosis. The pathological findings are similar to those seen in animal models of contrast media-induced SCI; and the pathophysiological mechanisms of such injury are discussed. 相似文献
27.
28.
Milan Thomas Narendra Nath Basu Manpreet Singh Gulati Tayo Oke Gabriel Constantinescu Midhat Siddiqui 《Annals of the Royal College of Surgeons of England》2009,91(4):340-343
INTRODUCTION
Isolated duodenal injury due to blunt abdominal trauma is extremely rare. We present a series of three such injuries due to go-karting accidents, which presented to our hospital over 5 months.CASE REPORTS
Between October 2007 and February 2008, three cases of D3/D4 duodenal rupture presented to our hospital after go-karting accidents. Trauma occurred as a result of the steering wheel impacting on the abdomen. All patients presented similarly with symptoms of epigastric and right upper quadrant pain. In all cases, computed tomography scanning was highly suggestive of duodenal injury and, in particular, demonstrated presence of retroperitoneal air centred around the duodenum. Treatment required laparotomy and operative repair in all cases.CONCLUSIONS
Duodenal injury presents insidiously due to its retroperitoneal position. A low threshold for investigating patients presenting with epigastric and right upper quadrant pain should be adopted along with active clinical vigilance to exclude serious and life-threatening trauma after go-karting accidents. 相似文献29.
Dr. Mahadev Dixit DNB Anuradha Dubey M.Ch. Mohan Gan M.Ch. Prashant Prabhu M.Ch. Narendra Nishanimath M.Ch. Aruneshwari Dayal M.Ch. Prabhu Halkati D.M. Suresh Patted DM Anand Vagarali MD Sharan Patil MD Sriram Sabade DNB DA Vithal Krishna Dhulkhed MD DA 《Indian Journal of Thoracic and Cardiovascular Surgery》2005,21(4):285-286
30.
Hypopharyngeal perforation secondary to blunt trauma is a rare injury. It can be managed operatively or expectantly without clear criteria for either approach. Here, we present a case of a 17-year-old adolescent boy who had a hypopharyngeal tear from direct blunt trauma to the anterior neck received during a high school football game. Physical examination demonstrated cervical crepitus, and neck radiograph revealed air in the retropharyngeal space. Rigid endoscopy diagnosed a 3-cm linear tear in the posterior hypopharynx. The tear was repaired transorally using laparoscopic instruments and visualized by a rigid endoscope, followed by anterior neck dissection and drain placement. Postoperatively, he was kept nil per os and received intravenous antibiotics. He was discharged home and returned to the football field the same fall. 相似文献