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Objective:To evaluate the safety of thymic surgery in patients aged 65 years and over.Methods:A total of 696 patients who underwent thymectomy/thymoma resection in the Department of Thoracic Surgery of Beijing Hospital from November 2011 to March 2022 were collected and divided into two groups according to the age of 65 years old.The preoperative course of disease, MG stage, dosage of pyridostigmine bromide, American College of Anesthesiologists(ASA)score, surgical method, intraoperative bleeding, postoperative drainage, postoperative complications, Clavien-dindo score(CDC), and myasthenic crisis were recorded and statistically analyzed.Results:A total of 696 patients were enrolled, including 364 males and 332 females, aged 15~86 years, with an average age of 49.1 years.There were 309 patients with thymoma, 565 patients with MG, and 178 patients with both.There were 124 cases in the elderly group(≥65 years old)and 572 cases in the non-elderly group(<65 years old). The incidence of thymoma was higher in the elderly group(54.8 % versus 42.1 %, χ2=6.664, P=0.010), while the incidence of MG was lower(67.7 % versus 84.1 %, χ2=17.827, P<0.001). The ASA score of the elderly group was higher than that of the non-elderly group( χ2=52.372, P=0.000), and the preoperative ventilation function FEV1 and FEV1/FVC were also significantly lower than those of the non-elderly group( z=8.187, 4.580, P=0.000 for all). The drainage volume in the first 3 days after operation and postoperative drainage tube time in the elderly group were significantly higher than those in the non-elderly group( P=0.018, P=0.003). The incidence of postoperative myasthenia crisis in the elderly group was higher than that in the non-elderly group( P=0.034). There was no significant difference in the incidence of postoperative complications between the two groups, but after Clavien-dindo classification, the score of the elderly group was higher than that of the non-elderly group( P=0.003). Although the ASA score and Clavien-dindo score of the elderly group were both higher than those of the non-elderly group, there was no correlation between the two. Conclusions:Although the preoperative ASA score and pulmonary function of elderly patients were poorer than those in the non-elderly group, while the incidence of postoperative myasthenia crisis was higher, and the incidence of postoperative complications was not higher, the Clavien-dindo classification, however, was higher in elderly patients than that of the non-elderly group.After careful preoperative evaluation and strengthening perioperative management, most elderly patients can receive thymus surgery safely with acceptable risks.
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Idiopathic Pulmonary fibrosis (IPF) is a chronic, progressive, fibrotic interstitial lung disease with unknown cause, which is closely related to lung cancer. A serious complication called Acute exacerbation of IPF (AE-IPF) is prone to occur after lung resection. It progresses rapidly without effective treatment and has a poor prognosis. A typical case of AE-IPF after lung cancer surgery was reported, and its clinical characteristics, imaging features, diagnosis and treatment were summarized. .
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Humans , Disease Progression , Idiopathic Pulmonary Fibrosis/surgery , Lung Neoplasms/surgery , Treatment OutcomeРеферат
Objective:To proceed a comparative study of characteristics and safety of video-assisted thoracoscopic thymectomy between artificial pneumothorax combining subxiphoid-costal margin approach versus right thoracic cavity approach.Methods:From January 2018 to December 2021, 251 patients(including myasthenia gravis with thymic hyperplasia or thymoma, thymic cysts and anterior mediastinal occupying lesions)undergoing thoracoscopic extended thymectomy in our department were retrospectively studied, and their clinical data were collected.The surgical methods were divided into artificial pneumothorax combining xiphoid costal margin approach(artificial pneumothorax group, n=165)and via right thoracic approach(right thoracic group, n=86). Clinical data such as preoperative information, operative duration, blood loss, postoperative drainage, drainage duration, and surgical complication were compared between two groups.Results:There were no statistical differences in age, gender and pathology between two groups(all P>0.05). Compared with the right thoracic group, operative duration[(108.6±45.2)min vs.(127.6±42.1)min, t=-3.628, P=0.000], intraoperative blood loss[(37.9±131.7)ml vs.(107.4±284.8)ml, t=-8.215, P=0.000], postoperative drainage volume[(379.0±285.5)ml vs.(646.6±373.3 ml), t=-6.277, P=0.000]and drainage duration[(2.2±1.0)d vs.(3.1±1.0)d, t=-7.275, P=0.000]were statistically significantly decreased in the artificial pneumothorax group.No significant difference was found(all P>0.05)in phrenic nerve injury(1/165 vs.0/86, P=1.000), myasthenia crisis(3/89 vs.2/66, χ2=0.014, P=0.906), and the conversion to thoracotomy(3/165 vs.2/86, P=1.000). Conclusions:VATS thymectomy by artificial pneumothorax combining subxiphoid-costal margin approach is a safer method, having a less trauma, less bleeding and less incidence rate of complication.Especially, it is more suitable for elderly female patients who cannot be intubated in double lumen, cannot tolerate one-lung ventilation, and have pulmonary insufficiency.
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Objective:To evaluate the clinical characteristics and the surgical safety in patients aged 65 years and over with thymic epithelial tumor, and analyze the prognosis of 3-10 years postoperative tumor and myasthenia gravy.Methods:A total of 228 patients diagnosed as thymic tumor and undergoing surgical surgery to remove the tumor in Beijing Hospital from Jan.2011 to Dec.2018 were retrospectively enrolled.Patients were divided into a young(≤ 65 yrs)and old(>65 yrs)groups.The operation time, intra-operative bleeding, drainage volume in the first 3 days after operation, days with drainage tube after operation, postoperative days of hospital stays, the diameter of the tumors, pathological classification, Tumor-Node-Metastasis(TNM)staging, Masaoka-Koga staging, whether or not complicated with myasthenia gravis and complications were compared between two groups.The patients were followed up by outpatient or telephone, and recurrence of thymoma, survival status and improvement of myasthenia gravis were tracked.Results:There were significant differences in pathological classification between the two groups( P=0.002). The postoperative days with drainage tube were longer in patients≥65 years old than in patients<65 years old[4(2-17)days and 3(1-9), Z=2.316, P=0.021]. Thymic atrophy was more common in patients ≥ 65 years old than in patients <65 years old(10.2% and 1.7%, χ2=5.937, P=0.015). Incidence of thymoma plus myasthenia gravis were higher in patients aged <65 years than those aged ≥65years(68.2% vs.40.8%, χ2=12.240, P<0.001), and incidence of thymic hyperplasia were higher in patients aged <65 years than those aged ≥65years(58.1% and 38.8%, χ2=2.316, P=0.016). The recurrence of thymoma was a poor prognostic factor affecting the survival of patients.Meanwhile, Masaoka-Koga stage Ⅲ and Ⅳ and TNM stage Ⅲ and Ⅳ were independent risk factors for postoperative recurrence of thymoma. Conclusions:Thymectomy is safe and effective in the patients aged 65 and over, and may have a better long-term prognosis.
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Objective:To compare the characteristics and therapeutic effects of video-assisted thoracoscopic(VATS)extended thymectomy by subxiphoid-costal margin approach versus right intercostal approach for the treatment of myasthenia gravis(MG).Methods:A retrospective analysis was conducted on 230 non-thymomatous MG patients undergone VATS extended thymectomy in our department from August 2015 to August 2019.According to the operation approach and method, patients were divided into two groups: the subxiphod-costal margin approach group(n=102)and the right intercostal approach group(n=128).Results:Intraoperative blood loss and the postoperative drainage were less in the subxiphod-costal margin approach group than in the right intercostal approach group[(30.3±25.2) ml vs. (45.1±30.6) ml, (178.6±90.5) ml vs.(205.4±87.6) ml, t=-3.935 and -2.27, P=0.003 and 0.024)]. Postoperative pain degree was lower in the subxiphod-costal margin approach group than in the right intercostal approach group [the Numerical Rating Scale(NSR)scores: 3.1±1.0 vs. 4.6±1.5, t=-8.677, P=0.001]. A difference in incidence rate of pore malunion also existed between the subxiphod-costal margin approach group and the right intercostal approach group, but it had no statistical significance(1/102 vs. 7/128, χ2=2.200, P=0.138). The complete remission rate and the overall effectiveness rate had no significant difference between the two groups(29.6% vs.32.4%, 85.7% vs. 84.7%, χ2=0.196 and 0.044, P=0.658 and 0.834). Conclusions:VATS extended thymectomy by subxiphoid-costal margin approach shows excellent safety and effectiveness in treating MG.It has advantages of low trauma and complications, and is particularly suited for elderly and female MG patients who are unable to receive double-lumen endotracheal intubation, are intolerant to one-lung ventilation or have pulmonary insufficiency.
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Objective:To summarize the clinical features, diagnosis and treatment of postoperative acute exacerbation of interstitial lung disease (ILD) after pneumonectomy.Methods:The clinical data of 4 patients with postoperative acute exacerbation of ILD after pneumonectomy admitted in Beijing Hospital from October 2014 to November 2015 were retrospectively analyzed and related literatures were reviewed.Results:Four patients were aged 60 to 74 years, including 3 males and 1 female, 2 of whom were idiopathic pulmonary fibrosis and 2 were connective tissue diseases related ILD. Chest high resolution computed tomography (HRCT) showed multiple lobular septal thickening, ground glass opacities, reticular shadow and strip shadow in both lungs. The patients developed acute dyspnea 2 to 3 days after pneumonectomy. In 2 cases, HRCT showed new patchy ground-glass opacities, reticular shadow and strip shadow in both lungs on the basis of preoperative pulmonary fibrosis. The sputum smear and culture showed no pulmonary infection in all 4 cases. Three patients were treated with glucocorticoids and 3 received mechanical ventilation with endotracheal intubation. One patient was successfully treated by early using adequate glucocorticoids, one patient improved after treatment but died after re-exacerbation, and the other two patients died after treatment failed.Conclusions:Acute exacerbation of ILD after pneumonectomy often occurs in early postoperative period and it is characterized by progressive dyspnea. Chest CT and respiratory pathogen examination are helpful for early diagnosis. Postoperative acute exacerbation of ILD often lacks effective treatment, requires mechanical ventilation, and the prognosis is poor. Although glucocorticoids may be effective, re-exacerbation should be alert during treatment.
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Objective:To compare the surgical effect of single-utility port and three port video-assisted thoracoscopic surgery(VATS) for patients of thoracic esophageal cancer.Methods:Patients who underwent McKeown surgery with single-utility port and three port VATS in Department of Thoracic Surgery at Beijing Hospital from January 2013 to December 2018 were enrolled. During the thoracic procedure, patients were placed forwardly in left lateral decubitus position. The video port was made at the eighth mid-axillary intercostal space, and the single-utility port was at the fourth intercostal space between antero-axillary and mid-axillary line. For three port VATS, another incision was made at the eighth posto-axillary intercostal space. The posterior mediastinum was exposed by the "suture-drawing exposure" method, then the thoracic esophagus was carefully dissected and mediastinal lymphadenectomy was done. Information was collected including demographic, perioperative and pathological data. Patients were followed up by telephone or outpatient record.Results:A total of 62 patients of single-utility port VATS and 28 three port VATS were included. All cases were accomplished by VATS, and none of them were converted to thoracotomy or adding additional ports. Sex proportion and ages of the two groups were comparable( P>0.05). The surgery duration[(336.9±55.7) min vs.(319.7±66.3)min, P=0.205] and thoracic procedure duration[(112.5±36.7)min vs.(108.9±43.6)min, P=0.686] of two groups were also similar. There were no statistical differences in volume of drainage, postoperative stay, thoracic complications, number of lymph nodes dissected, and survival after surgery between two groups( P>0.05). Peripheral blood oxygen saturation in first 3 days after surgery of single-utility port VATS patients was significantly higher[ Day 1: (97.00±1.57)% vs.(96.10±1.23)%, P=0.009; Day 2: ( 96.60±1.84 )% vs.(95.70±1.19)%, P=0.020; Day 3: (97.40±1.56)% vs.(96.30±1.42)%, P=0.002] and respiratory rate was significantly lower[(19.70±1.48) times/min vs.(20.70±1.70) times/min, P=0.006]than three-port VATS patients. Conclusion:Single-utility port VATS for McKeown surgery is safe and feasible, which tends to reduce the surgical trauma and can be a routine surgical procedure for minimally invasive esophagectomy.
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Objective@#To summarize the clinical features, diagnosis and treatment of postoperative acute exacerbation of interstitial lung disease (ILD) after pneumonectomy.@*Methods@#The clinical data of 4 patients with postoperative acute exacerbation of ILD after pneumonectomy admitted in Beijing Hospital from October 2014 to November 2015 were retrospectively analyzed and related literatures were reviewed.@*Results@#Four patients were aged 60 to 74 years, including 3 males and 1 female, 2 of whom were idiopathic pulmonary fibrosis and 2 were connective tissue diseases related ILD. Chest high resolution computed tomography (HRCT) showed multiple lobular septal thickening, ground glass opacities, reticular shadow and strip shadow in both lungs. The patients developed acute dyspnea 2 to 3 days after pneumonectomy. In 2 cases, HRCT showed new patchy ground-glass opacities, reticular shadow and strip shadow in both lungs on the basis of preoperative pulmonary fibrosis. The sputum smear and culture showed no pulmonary infection in all 4 cases. Three patients were treated with glucocorticoids and 3 received mechanical ventilation with endotracheal intubation. One patient was successfully treated by early using adequate glucocorticoids, one patient improved after treatment but died after re-exacerbation, and the other two patients died after treatment failed.@*Conclusions@#Acute exacerbation of ILD after pneumonectomy often occurs in early postoperative period and it is characterized by progressive dyspnea. Chest CT and respiratory pathogen examination are helpful for early diagnosis. Postoperative acute exacerbation of ILD often lacks effective treatment, requires mechanical ventilation, and the prognosis is poor. Although glucocorticoids may be effective, re-exacerbation should be alert during treatment.
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BACKGROUND@#Interstitial lung disease (ILD) is a group of diffuse lung diseases that mainly involve the interstitial and alveolar cavities and result in loss of alveolar-capillary functional units, leading to restrictive ventilatory dysfunction and diffusion impairment. There was an increased incidence of lung cancer on the basis of ILD, and perioperative risk of patients with lung cancer combined with ILD (LC-ILD) was significantly increased. The aim of this study is to summarize the safety and experience of surgical treatment of LC-ILD.@*METHODS@#A retrospective analysis was performed on 23 patients with LC-ILD who underwent pneumonectomy in Beijing Hospital from January 2012 to December 2019, and their clinical manifestations, image feature, pathology, surgical safety, perioperative complications and treatment experience were summarized.@*RESULTS@#A total of 23 patients were included in this study, including 20 males (87.0%) with an average age of (69.1±7.8) years, and 19 cases (82.6%) were smokers. Of the ILD types, 14 cases (60.9%) were idiopathic pulmonary fibrosis, 7 cases (30.4%) were idiopathic nonspecific interstitial pneumonia, and 2 (8.7%) were interstitial lung disease associated with connective tissue diseases. The pathology of lung cancer included adenocarcinoma (30.4%, 7/23), small cell carcinoma (30.4%, 7/23), squamous cell carcinoma (26.1%, 6/23), small cell carcinoma mixed with squamous cell carcinoma (4.3%, 1/23) and large cell neuroendocrine carcinoma (8.7%, 2/23). Surgical approaches included video assisted thoracoscopy (69.6%, 16/23) and anterolateral thoracotomy (30.4%, 7/23), with lobectomy (52.2%, 12/23), double lobectomy (4.3%, 1/23), and sublobectomy (39.1%, 9/23). There were 11 cases (47.8%) of postoperative complications, including 8 cases (34.8%) of pulmonary complications, 4 cases (17.4%) of acute exacerbation of ILD (AE-ILD), 6 cases (26.1%) of atrial fibrillation, and 1 case (4.3%) of acute left ventricular dysfunction. The 90-day mortality is 8.7% (2/23) and the cause of death was acute exacerbation of ILD.@*CONCLUSIONS@#Most of LC-ILD were elderly patients with multiple comorbidities and decreased pulmonary function, leading to significantly increased surgical risk. The ILD should be fully evaluated and controlled before surgery, intraoperative trauma should be minimized, and special attention should be paid to pulmonary complications and AE-ILD after surgery. Postoperative AE-ILD has a poor prognosis and glucocorticoids may be effective. Early diagnosis and treatment is the key to treatment of AE-ILD.
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BACKGROUND@#DNA polymerase β is one of the key enzymes for DNA repair and it was reported that about 30 percent of different types of cancers carried mutations in its coding gene Polb. However, it is still controversial whether it is true or false because of the small sample size in these studies. In current study, we performed genetic screening of promoter and coding regions of Polb gene in 69 Chinese lung cancer patients using Sanger sequencing method, so as to elucidate real mutation frequency of Polb mutations in Chinese Han population.@*METHODS@#Salting out extraction method was used to get the genome DNAs from tumor and normal matched tissues of 69 lung cancer patients. The promoter and 14 coding regions of Polb gene were then amplified using these DNAs as the template. After purification, amplicons were sequenced and aligned to the wild type Polb gene in NCBI database, in order to find out the mutated sites of Polb gene in Chinese lung cancer patients.@*RESULTS@#In this study, we totally found only 5 mutated sites in Polb gene. In detail, 3 mutations (-196G>T, -188_-187insCGCCC, -168C>A) were located in the promoter region; 2 mutations (587C>G, 612A>T) were found in coding regions. Specially, mutations of -188_-187insCGCCC and 587C>G (resulting to the amino acid substitution of Thr to Ser at position 196) had never been reported by other groups before. However, all these 5 mutated sites could be detected in both tumor and matched normal tissues, which inferred that they are not lung tumor specific mutations.@*CONCLUSIONS@#No lung tumor specific mutations of Polb gene could be found in Chinese lung cancer patients and Polb gene mutation might not be a molecular marker for Chinese lung cancer patients.
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Fetal adenocarcinoma of the lung (FLAC) is an extremely rare subtype of lung cancer, accounting for only 0.1% to 0.5% of primary pulmonary malignancy. In 2011, international multidisciplinary classification of lung adenocarcinoma developed by the International Association for the Study of Lung Cancer (IALSC), the American Thoracic Society (ATS) and the European Respiratory Society (ERS) classified FLAC as a variant of invasive adenocarcinoma. FLAC has been further divided into low-grade fetal adenocarcinoma (L-FLAC) and high-grade fetal adenocarcinoma (H-FLAC) as these two categories exhibit different clinicopathological features and biological behaviors. Here we report a case of high-grade fetal adenocarcinoma and summarize clinicopathologic features of fetal lung adenocarcinoma. .
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Humans , Male , Middle Aged , Adenocarcinoma of Lung , Diagnostic Imaging , Pathology , General Surgery , Fetus , Neoplasm Grading , Prognosis , Tomography, X-Ray ComputedРеферат
Objective To discuss the adjustment effects of kidney reinforcing medicine on growth and development and the content of choline acetyl transferase (CHAc) in rats with kidney-deficiency constitution. Methods The method of cats scare rats was used to build composite offspring rat models with deficiency and acquired dystrophy, and then the models were divided into model group, Zuogui Pill group and Yougui Pill group. The rats in blank group came from normal pregnant rats. Baby rats were scared and received gavage at the same time. All administration groups received suspension of Zuigui Pills or Yougui Pills. Blank group and model group received the same amount of normal saline, once a day, for 3 months. Growth and development of rats were observed. Weight and food utilization of rats aged 5–8 weeks in each group were recorded. The content of brain CHAc was detected by ELISA. Results When offspring were 5–8 weeks old, weights of rats in the model group were lower than blank group (P<0.01); while weights of rats in Zuogui Pill group and Yougui Pill group increased significantly (P<0.05) and the food utilization was positively correlated with weight; the CHAc content in the model group decreased significantly compared with blank group (P<0.05, P<0.01); while the CHAc content in Zuogui Pill group and Yougui Pill group increased significantly compared with the model group (P<0.01). Conclusion Kidney reinforcing medicine can improve backward growth and development of rats with kidney-deficiency constitution and adjust CHAc in the brain, so as to promote the learning and memory ability of rats with kidney-deficiency constitution.
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Objective To compare the safety , surgery effects , pain scores of the close-distance-two-port video-assisted lobectomy and systematic dissection of the mediastinal nodes , and single-port video-assisted thora-coscopic surgery (VATS). Methods Between October 2012 and January 2015 in Peking University First Hospi-tal and Beijing Hospital , 269 patients who were going to be performed lobectomy and systematic lymph node dissection, were gathered and 205 patients were included in this study finally. Of the total, 122 patients were performed close-distance-two-port VATS , and 83 patients underwent single-port VATS. The clinical data were gathered, and statistically analyzed. Result In both groups, no severe postoperative complications or death oc-curred. No significant differences existed between the two groups in terms of intraoperative blood loss , duration and volume of chest tube drainage , postoperative pain score , hospital stay after surgery and hospitalization ex-penses (P > 0.05) but the data about operating time, number of dissected lymph nodes, complications(subcuta-neous emphysema , air-leak from the port of drainage tube and poor wound healing ) were significantly different (P < 0.05). Conclusions Compared with the single-port VATS, the method of close-distance-two-port video-as-sistant lobectomy and systematic dissection of the mediastinal nodes is safe and practicable with definite thera-peutic effect, less operation difficulty and complications.
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Objective To observe the effects of kidney-supplementing TCM on the brain-derived neurotrophic factor (BDNF) expression of rats with kidney-deficiency constitution;To discuss the correlation between functional activity of neurons in hippocampus with the theory of kidney storing aspiration.MethodsComposite rat models with offspring deficiency and acquired dystrophy were built through the method of “cats scare rats”, and then were divided into model group,Zuogui Pill group,Yougui Pill group, and blank group in which offspring came from normal pregnant rats. After the treatment with kidney-supplementing TCM, weight of brain and kidney, brain weight indexes and the BDNF expression were detected.Results Compared with the blank group, the quality of brain, kidney and brain weight indexes, BDNF expression decteased of rats in model group were lower;flaky edema appeared in hippocampus observed by microscope;the number of nerve cells decreased and loosely structured. After the treatment of kidney-supplementing TCM, the weight of brain and kidney and brain weight indexes recovered to some extent;BDNF expression increased;nerve cells in cerebral cortexincluding hippocampus increased;the cell structure compacted and the level cleared as well as no edema.Conclusion The BDNF expression has correlation with the theory of kidney storing aspiration. Kidney-supplementing TCM can improve brain function and significantly improve declining situation of brain function of rats with kidney-deficiency constitution.
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ObjectiveTo discuss the correlation between kidney-deficiency constitution and brain function decline, and material basis of kidney-storing-spirit theory and neurobiology mechanism. Methods By employing the method of “cats scare rats”, composite offspring rat models with deficiency and acquired dystrophy were built, then they were divided into model group,ZuoguiPill group and Yougui Pill group. Blank group was composed from normal pregnant rats. When the intimidation of offspring began,Zuogui Pill andYougui Pill groups received gavage with corresponding doses of medicine, 1 times per day for 2 consecutive months. Model and blank groups received the same amount of normal saline. Exercise capacity was detected by suspension test. Learning and memory capacity was detected by Y maze test. Expressions of NMDA receptor subunits NR2A and NR2B were detected by immunohistochemical method.Results In suspension test, the duration of model group was shorter than blank group (P<0.05), while duration ofZuogui Pill andYougui Pill groups was longer than the model group (P<0.05). In Y maze test, the correct number of model group was less than blank group, and increased significantly after treatment (P<0.05). The optical density of NR2A and NR2B was lower in model group than blank group (P<0.05) and higher inZuogui Pill andYougui Pill groups than model group (P<0.05).ConclusionThe neurobehavioral is abnormal and NMDA receptor expression depresses in rats with kidney- deficiency constitution.ZuoguiPill andYouguiPill can rise NMDA receptor expression and improve brain function of rats, which reveal the correlation between kidney-deficiency constitution and brain function decline, and material basis of kidney-storing-spirit theory and neurobiology mechanism.
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Objective To analyze the mid- and long-term results after coronary artery bypass graft surgery (CABG), to evaluate the accuracy of multi-detector CT coronary angiography (MDCT) on the graft patency status and to compare the patency for different grafts. Methods One hundred and one cases underwent CABG from June 1992 to March 2008 were followed up by searching the database of MDCT (42 cases) and selective coronary angiography (SCA, 59 cases). The mean following up period was (66.79 ±44.27) months. Three hundreds and 10 grafts including 115 arterial and 195 venous were analyzed.A comparison of the patency rate between the arterial and venous grafts was also carried out. At the mean time, 2 groups were divided according to the paft lesions( patency of not). Uunivariate analysis and Logistic regression analysis were made for statistics. Results At the follow-up of (53.93 ± 36.80) months, the patent rate of LIMA, RA, SV and CV examined by MDCT was 94.7%, 92.0%, 85.9% and 60.0%, respectively. The patent rate for MDCT patients with angina was 83.5%, and 95.2% for angina-free group ( P = 0.046). At the follow-up of (75.95 ±47.09) months, the patent rate of LIMA, RA, SV and CV examined by SCA was 87.1%, 81.0%, 53.6% and 57. 1%, respectively. In SCA patients the patent rate was 62.0% for angina group and 100% for angina-free group ( P = 0.025 ). According to logistic regression analysis, only the postoperative period was statistically related to the graft lesion. Conclusion MDCT could find out the occlusions and obvious stenoses of the grafts after CABG. It might be served as a noninvasive method to evaluate the grafts patency postoperatively. The mid- and long-term patency of arterial grafts is better than venous grafts. Graft lesion is an important factor leading to postoperative recurrent angina pectoris. The severity of the graft lesion has a close relation to the lenth of postoperative period.
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Objective To compare the influences of off-pump and on-pump coronary artery bypass grafting operation on plasma thyroid hormones.Methods Forty patients undergoing coronary surgery were randomly divided into off-pump group(n=20)and on- pump group(n=20).Plasma thyroid hormones(T_3,T_4,FT_3,FT_4,rT_3)and thyroid-stimulating hormone(TSH)were studied perio- peratively.Results Before operation,the values of aU the variables were within normal range in the two groups.In off-pump group, T_3 and FT_3 concentration dropped significantly after operation,reaching the lowest value at first day postoperatively[T_3:(39.7?6.2) ng/dl vs.(78.6?2.1)ng/dl,P0.05),which were within normal range all along,rT_3 concentration rose significantly after operation,reaching the highest value at third day postoperatively[(82.1?26.8)ng/dl vs.(42.3?15.6)ng/dl, P0.05),whereas baseline,operative and postoperative variables were similar.Con- clusion Off-pump operation has some influences on plasma thyroid hormones,showing"low T_3 syndrome"postoperatively,that is similar to what on-pump operation does.
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<p><b>OBJECTIVE</b>To evaluate radial artery (RA) and internal mammary artery (IMA) grafts in coronary artery bypass and the use of color Doppler ultrasound in the peri-operative evaluation of IMA and radial-ulnar collateral circulation.</p><p><b>METHODS</b>From June 1998 to June 2000, sixty cases of coronary bypass revascularization with RA and IMA were performed. Preoperatively, the radial-ulnar collateral circulation was evaluated with the modified Allen's test, color Doppler ultrasound and noninvasive oxygen saturation measurement. The IMA lumen and blood flow were measured at the first intercostal space with color Doppler ultrasound preoperatively and postoperatively.</p><p><b>RESULTS</b>One patient (1.7%) died of serious cardiac arrhythmia on the fourth postoperative day. There were no arterial graft harvest related complications. Before harvesting, the ulnar artery blood flow was 30.78 +/- 9.71 ml/min, and it increased to 43.36 +/- 13.98 ml/min (40.87% increase, P < 0.01) after the operation. Compared with the baseline, there was no obvious change of IMA blood flow postoperatively (P > 0.05), but the systolic/diastolic flow ratio markedly decreased from 8.57 +/- 3.98 ml/min to 3.41 +/- 4.87 ml/min (P < 0.01).</p><p><b>CONCLUSIONS</b>Arterial grafts can be safely used for coronary bypass revascularization with good results. The ulnar artery blood flow can increase compensatively after RA harvesting. The diastolic blood flow of grafted IMA markedly increased postoperatively. Color Doppler ultrasound was very helpful both in evaluating the radial-ulnar collateral circulation before RA harvesting and in assessing the patency of the grafted IMA after coronary artery bypass grafting (CABG).</p>
Тема - темы
Adult , Aged , Humans , Middle Aged , Coronary Artery Bypass , Methods , Coronary Circulation , Mammary Arteries , Transplantation , Radial Artery , TransplantationРеферат
0. 05). Creatinine clearance improved significantly in group C from a mean value of (90?23)ml/min preoperatively to (139?46)ml/min during operation (P