0.05). In captopril group MAP, HR and plasma ET concentration remained unchanged during intubation, but the plasma NO concentration was increased at intubation (T2) or (T3) and NO/ET ratio increased significantly at T2 as compared with the baseline (T1 ) . In control group MAP, HR and plasma ET concentration were increased significantly during intubation (P

OBJECTIVEThis study aims to observe and compare the influences of the casting alloy post and cores on magnetic resonance imaging (MRI).

METHODSSix casting alloy post and sores were fabricated for the experimental groups, and zirconia post and core served as the control. The seven types of post and cores were of the same size and shape. Each post and core was orally fastened to a volunteer and then imaged with sequences of T1-weighted spin echo imaging (SE-T1WI), T2-weighted turbo spin-echo imaging (TSE-T2WI), and diffusion weighted imaging (DWI).

RESULTSCobalt chromium alloy post and core generated severe artifacts, whereas gold palladium alloy post and core generated no obvious artifacts, and no difference was observed between the zirconia and the gold palladium alloy post and cores (P > 0.05). The pure titanium alloy post and core produced mild artifacts. The post and cores of the titanium, nickel-cadmium, and gold platinum alloys generated moderate artifacts with no significant differences (P > 0.05).

CONCLUSIONDifferent metal post and cores have different influences on MRI. With the exception of that generated by cobalt chromium alloy, the artifact generated by the single-alloy post and core does not influence the image of the normal head and neck.

The effects of TSCP and TSCC on aggregation and adhesion of blood platelets were measured by turbidimetric method and salzman method respectively. TSCP and TSCC strongly increase mouse and rat platelet aggregation and platelet adhesion. These effects are important for blood coagulation. cAMP and TXB2 levels in plasma and platelet were determind by RIA TSCP significantly increased the TXB2 level in plasma and platelet. This effect may be the main mechanism of increasing platelet aggregation by TSCP.

Objective To enhance understanding of the vertebral compressed fracture in old patients so as to reduce its misdiagnosis. Methods 30 aged patients with vertebral compressed fracture were treated from 1998 to 2004 in our department. Their clinic data were retrospectively analyzed. There were 27 males and 3 females, aged from 70 to 90 years (averaging 82.5 years). Results All the patients were diagnosed definitely. There were 2 cases of T11 fracture, 13 cases of T12 fracture, 11 cases of L1 fracture, 3cases of L2 fracture, and 1 case of L3 fracture. At first 1 case was overlooked, and segmental positioning was wrong in 3 cases but the mistakes were corrected later. Conclusion Meticulous review of the history and clinical manifestation in addition to supplemental imageological examination are essential to early diagnosis of the majority of vertebral compressed fractures. As for some difficult early diagnoses, fat suppression MRI and nuclide bone scanning are helpful.

Objective:To observe the influence of commonly used dental cast metal posts and cores on magnetic resonance imaging (MRI)for head and neck.Methods:Six kinds of posts and cores made of metal alloy (Ni-Cr alloy,Co-Cr alloy,titanium alloy,pure titanium,Pd-Au alloy and Au-Pt alloy)were respectively fixed on the mucosa of left palate of a volunteer.The maxillofacial region of the subjects was scanned by routine head sequences SE-T1WI and TSE-T2WI respectively.Results:ANOVA of factorial design analy-sis indicated significant differences of artifacts among metal materials(F=153.63,P<0.05),scanning sequences(F=70.94,P<0.05)and the number of cast posts and cores(F=102.73,P<0.05).In both sequences the size of metal artifacts were as following:Pd -Au alloy>Co-Cr alloy>Ni-Cr alloy>Au-Pt alloy>titanium alloy>pure titanium;two posts and cores>one post and core;SE-T1WI>TSE-T2WI.Conclusion:Different cast metal posts and cores have different influences on MRI artifact.Reasonably choosing the metal materials and scanning sequences can minimize artifacts on MRI.

Objective To study the imaging features and adequate interventional therapy of the diffuse type hepatic cellular carcinoma(HCC).Methods Fourteen patients with the diffuse type HCC underwent hepatic angiography and the adequate interventional therapy by TAI or TAE according to imaging appearances,blood supply and function of liver.Results ①Imaging appearances:the most common appearances of fourteen patients with the diffuse type HCC on DSA and CT included:tumor blood vessel was extensive and increased,tumor stain was extensive in left and right liver leaf(such as grain,small spot ,nodule shadows or low density area),liver enlarged obviously with liver cirrhosis,portal vein tumor thrombus,arteriopotal shunt and widespreadly scattered iodized oil,et al.②Therapeutic effect:the mean survival time of fourteen patients was 3 months,the longest survival period was 10 months and the shortest one was olny 15 days.Conclusion ①The specific appearances of the diffuse type HCC are diffuse small spot-like,frosted glass-like,double orbit-like and big liver-like.②The interventional therapeutic effect and prognosis of the diffuse type HCC are the worst than that of other type primary hepatic carcinoma.Selecting adequate interventional therapeutical plan can obviously prolong survival time of the patient.

Objective The purpose is to discuss the characteristics of the TCM syndromes of the patients with advanced gastric cancer, in order to reveal the pathological characteristics of Chinese medicine. Methods By observing the symptoms and signs of 126 patients with advanced gastric cancer, the TCM syndromes was used to analyze the distribution of TCM syndromes' frequency and the scores of symptoms. Results The resut showed that the common TCM syndromes for the disease location were stomach, spleen, liver, kidney, gallbladder, large intestine, small intestine, lung, utreus, heart, brain and bladder, where the frequency of stomach, spleen were higher than other. And the common TCM syndromes for the disease pathology were Qi deficiency, blood deficiency, Qi stagnation, blood stasis, toxin, phlegm, dampness, Yin deficiency, Qi revresion, heat, food stagnation, water stagnation and Yang deficiency.Conclusions The common TCM syndromes for the disease location of advanced gastric cancer were stomach, spleen, liver, kidney; And the common TCM syndromesfor the disease pathology were Qi deficiency and blood deficiency, Qi stagnation, blood stasis, toxin, phlegm, dampness, Yin deficiency, Qi revresion, heat, food stagnation, water stagnation and Yang deficiency.

Objective To evaluate efficacy,safety and complication of percutaneous kyphoplasty (PKP) for osteoporotic vertebral compression fracture (OVCF) in≥90 years patients.Methods Clinical data of 56 cases aged ≥ 90 years with osteoporotic vertebral compression fracture undergoing percutaneous kyphoplasty were retrospectively analyzed.Visual analog scale (VAS) score,analgesics administration score,locomotor activity score,bone cement leakage and incidence of refracture were evaluated before and 3 days after treatment,and at the last follow-up.Results The mean follow-up was 18.6 months (6-32 months) in all patients.The mean VAS score was (7.1 ±2.1) before treatment,(2.6±1.1) at 3 days after the procedure,and (1.8±0.7) at last follow-up,respectively (F=455.794,P＜0.001).Analgesics administration score were (2.0±1.7),(1.4±0.5) and (1.1±0.7) respectively before and 3 days after treatment,and at the last follow-up (F=9.631,P＜0.001).Locomotor activity score were (2.5±0.6),(1.2±0.5) and (1.0±0.3)before and 3 days after treatment,and at the last follow-up (F=63.254,P＜ 0.001) respectively.Bone cement leakage occurred in 10 cases(17.9％),recurrent fracture in 6 cases(10.7％),cerebrospinal leak in 3 cases (5.3％),and nerve root stimulation in2 cases(3.6％).Total complication rate was 33.9％(19/56),and all complications were transient and well tolerated.Conclusions Kyphoplasty for osteoporotic vertebral compression fracture in the very elderly is effective and safe.It alleviates fracture-induced pain,reduces analgesic drug use and improves spinal activity,and provides a better choice for minimal invasive treatment for nonagenarian OVCF patients.

OBJECTIVE: To explore the impact of upper airway expansion surgery on the blood pressure of hypertension patients with upper airway obstruction. METHOD: Clinical data of 45 cases of hypertension patients with nasal obstruction who were underwent upper airway expansion surgery. The morning sitting blood pressure of patients were recorded. All of the patients were underwent nasal expansion surgery and 11 cases with obstructive sleep apnea hypopnea syndrome were combined with H-uvulopalatopharyngoplasty. RESULT: Blood pressure of all 45 cases were apparently reduced in 12 months after the operations [systolic blood pressure (157.38 +/- 15.15) mmHg to (132.18 +/- 8.43) mmHg, diastolic blood pressure (95.42 +/- 9.28) mmHg to (82.31 +/- 5.88)mmHg], in which 9 cases with type I hypertension were lowered to normal pressure. Results had statistical difference between pre-operation and post-operation (P < 0.01). CONCLUSION Upper airway expansion surgery (including nasal and pharynx cav ity) can help lower blood pressure of hypertensive patients with nasal obstruction. Post-operative results were better than H-uvulopalatopharyngoplasty only.
Adult ; Aged ; Aged, 80 and over ; Blood Pressure ; physiology ; Female ; Humans ; Hypertension ; physiopathology ; Male ; Middle Aged ; Otorhinolaryngologic Surgical Procedures ; Sleep Apnea, Obstructive ; complications ; physiopathology ; surgery

Objective To investigate the effects of propranolol on thyroid hormone in patients with hyperthyroidism after operation. Methods Forty patients with mediate or severe degree hyperthyroidism undergoing operation were randomly divided into four groups according to anesthesia and whether to take propranolol in perioperative period: Group A:propranolol plus general anesthesia; Group B: general anesthesia; Group C:propranolol plus cervical plexus blocking; Group D: cervical plexus blocking. The consecutive changes of T 3, T 4,rT 3 and TSH were measured with radioimmunological assay pre and post operatively. Results The level of serum T 3 in all groups decreased 1～7 days after operation. The decrease in serum T 3 leves was most significant 3～7 days after operation in group A and C, 1～3 days after operation in proup B and D(P