1
|
Zhang J, Lu WD, Li M, Li G, Feng H, Zhang HY, Ji QS, Cui XP. [Risk factors of perinatal complications in patients with pulmonary hypertension underwent cesarean section in 4 Chinese centers]. Zhonghua Xin Xue Guan Bing Za Zhi 2022; 50:43-48. [PMID: 35045613 DOI: 10.3760/cma.j.cn112148-20211202-01041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To identify the risk factors related to perinatal complications in patients with pulmonary hypertension underwent cesarean section. Methods: We retrospectively analyzed the medical records of all pregnant women with pulmonary hypertension hospitalized in 4 different hospitals in Shandong province and underwent cesarean section between May 2010 and May 2020. Patients were divided into perinatal complication group and control group according to the presence or absence of perinatal complications. Perinatal complications included aggravated heart function, new onset arrythmias, sudden cardiac arrest, all-cause death within 42 days post cesarean section, postpartum bleeding and thrombotic events. Risk factors of perinatal complications were analyzed. Results: A total of 167 patients (47 cases in the perinatal complication group and 120 cases in the control group) were included in this study. The average age of this cohort was 28(24, 32) years, and 75(44.9%) patients suffered newly diagnosed pulmonary hypertension during pregnancy. The main cause of pulmonary hypertension was congenital heart disease (137(82.0%)). Age, pregnant weeks, percent of primipara, intra-cardiac shunt, and receiving targeted medication therapy, cardiac dimensions were similar between the two groups. A total of 62 complications were recorded in the complication group including 28 cases of aggravated heart function, 4 cases of new onset arrythmias, 2 cases of cardiac arrest, 11 cases of bleeding or thrombotic events and 17 patients were dead. Prevalence of idiopathic pulmonary hypertension and general anesthesia was significantly higher, functional capacity was significantly lower in perinatal complication group than in control group (all P<0.05). The estimated systolic pulmonary artery pressure, serum N-terminal pro-B type natriuretic peptide and total bilirubin (TBIL) levels were significantly higher in perinatal complication group than in control group (all P<0.05). Logistic analysis demonstrated WHO Function Class(FC) Ⅲ/Ⅳ (OR=2.416,95%CI 1.016-5.743, P=0.046) and TBIL level (OR=6.874,95%CI 1.643-28.757, P=0.008) were the independent risk factors of perinatal complications. Conclusion: TBIL and WHO FC are independent risk factors of perinatal complications in pregnant women with pulmonary hypertension underwent cesarean section.
Collapse
Affiliation(s)
- J Zhang
- Department of Cardiovascular Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, China
| | - W D Lu
- Department of Geriatric Medicine & Shandong Key Laboratory Cardiovascular Proteomics, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, China
| | - M Li
- Intensive Care Unit of Cardiac Surgery, Shandong Provincial Qianfoshan Hospital, First Hospital Affiliated to Shandong First Medical University, Affiliated Hospital of Shandong University, Jinan 250014, China
| | - G Li
- Department of Pulmonary and Critical Care Medicine, Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - H Feng
- Department of Gastroenterology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - H Y Zhang
- Department of Geriatric Medicine & Shandong Key Laboratory Cardiovascular Proteomics, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, China
| | - Q S Ji
- Department of Cardiology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, China
| | - X P Cui
- Department of Geriatric Medicine & Shandong Key Laboratory Cardiovascular Proteomics, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, China
| |
Collapse
|
2
|
Zidan MA, Omran H, Naous R, Sultan A, Fahmy HAH, Lu WD, Salama KN. Single-Readout High-Density Memristor Crossbar. Sci Rep 2016; 6:18863. [PMID: 26738564 PMCID: PMC4703991 DOI: 10.1038/srep18863] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Accepted: 11/27/2015] [Indexed: 11/24/2022] Open
Abstract
High-density memristor-crossbar architecture is a very promising technology for future computing systems. The simplicity of the gateless-crossbar structure is both its principal advantage and the source of undesired sneak-paths of current. This parasitic current could consume an enormous amount of energy and ruin the readout process. We introduce new adaptive-threshold readout techniques that utilize the locality and hierarchy properties of the computer-memory system to address the sneak-paths problem. The proposed methods require a single memory access per pixel for an array readout. Besides, the memristive crossbar consumes an order of magnitude less power than state-of-the-art readout techniques.
Collapse
Affiliation(s)
- M A Zidan
- Department of Electrical Engineering &Computer Science, University of Michigan, Ann Arbor, MI 48109, USA
| | - H Omran
- Electrical Engineering Program, King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia
| | - R Naous
- Electrical Engineering Program, King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia
| | - A Sultan
- Electrical Engineering Program, King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia
| | - H A H Fahmy
- Electronics and Communications Department, Faculty of Engineering, Cairo University, Giza 12316, Egypt
| | - W D Lu
- Department of Electrical Engineering &Computer Science, University of Michigan, Ann Arbor, MI 48109, USA
| | - K N Salama
- Electrical Engineering Program, King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia
| |
Collapse
|
3
|
Chi Z, Su CD, Lu WD. A new exopolysaccharide produced by marine Cyanothece sp. 113. Bioresour Technol 2007; 98:1329-32. [PMID: 16782333 DOI: 10.1016/j.biortech.2006.05.001] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2006] [Revised: 05/01/2006] [Accepted: 05/03/2006] [Indexed: 05/10/2023]
Abstract
Cyanothece sp. 113, a unicellular, aerobic, diazotrophic and photosynthetic marine cyanobacterium, produced 22.34 g/l of exopolysaccharide in 11 days at 29 degrees C, aeration rate of 7.0 l/min and continuous illumination with 4300 lux. After purification, the spectra of UV, IR, (1)H NMR, (13)C NMR and GC-MS analysis showed that the purified exopolysaccharide was alpha-D-1,6-homoglucan. This is first report describing linear alpha-D-1,6-homoglucan exopolysaccharide produced by marine cyanobacteria.
Collapse
Affiliation(s)
- Z Chi
- UNESCO Chinese Center of Marine Biotechnology, Ocean University of China, Yushan Road, Qingdao, China.
| | | | | |
Collapse
|
4
|
Abstract
A series of acyclic enediynes, 2-((6-substituted)-3-hexen-1,5-diynyl)benzonitriles (8--11), display potent inhibition against topoisomerase I without the formation of active biradical intermediates and show inhibitory activity against topoisomerase I at 10 microM, which is five times that of camptothecin from the results of agarose gel electrophoresis.
Collapse
Affiliation(s)
- C F Lin
- School of Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan
| | | | | | | | | |
Collapse
|
5
|
Xu CK, Lu WD, Wu JC, Zhu XQ, He GR, Huang KH. [The research on applications of diagnostic software in single photon emission computed tomography]. Zhongguo Yi Liao Qi Xie Za Zhi 2001; 25:66-87. [PMID: 12583142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In this paper, the structure of software system, the principles of overlay programming and the running mechanism of the programs for the Single Photon Emission Computed Tomography(SPECT) made by French SOPHA MEDICAL Corp. are analyzed in detail. On this basis, a method of extending functions of the system is introduced too. All the results of the extension in software functions for organ volume determination and of the measurements for living animals have proved the correctness and reliability of the method.
Collapse
Affiliation(s)
- C K Xu
- Dept. of Microcomputer, Suzhou Medical College
| | | | | | | | | | | |
Collapse
|
6
|
Broyles DL, Nielsen RG, Bussett EM, Lu WD, Mizrahi IA, Nunnelly PA, Ngo TA, Noell J, Christenson RH, Kress BC. Analytical and clinical performance characteristics of Tandem-MP Ostase, a new immunoassay for serum bone alkaline phosphatase. Clin Chem 1998; 44:2139-47. [PMID: 9761247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
The performance characteristics of the Tandem-MP Ostase assay, a new microplate immunoassay for bone-specific alkaline phosphatase (bone ALP; EC 3.1.3.1) in human sera, are described. Bone ALP is bound to streptavidin-coated microwells by a single biotinylated anti-bone ALP monoclonal antibody. Antigen is detected by the addition of p-nitrophenyl phosphate. The assay is performed at room temperature in <90 min. Imprecision was 2.3-6.1% with a detection limit of 0.6 microg/L. Method comparison of bone ALP measurements with the Tandem-MP Ostase assay and the mass-based Tandem-R Ostase assay (n = 285) indicated regression statistics of Tandem-MP Ostase = 1.03 Tandem-R Ostase + 0.22 microg/L, S(y/x) = 4.0 microg/L, r = 0.97. Serum bone ALP values in apparently healthy men and in pre- and postmenopausal women were also similar between the two Ostase assay formats. Liver ALP reactivity determined using the slope and heat inactivation methods was similar in both Ostase assays. Liver ALP reactivity ranged from 3 microg/L (heat inactivation) to 6 microg/L (slope method) per 100 U/L of liver ALP activity, whereas bone ALP reactivity was 37 microg/L per 100 U/L of bone ALP activity, indicating a liver ALP relative reactivity of 8.1-16.2%. Similar results were obtained with the Alkphase-B bone ALP immunoassay. The Tandem-MP Ostase bone ALP assay demonstrated increased concentrations of serum bone ALP in conditions where bone metabolism is increased and showed a rapid, temporal decrease in serum bone ALP in Paget disease patients on bisphosphonate therapy. In conclusion, the Tandem-MP Ostase assay for serum bone ALP is a rapid, simple, robust nonisotopic alternative to the Tandem-R Ostase immunoradiometric assay that provides an accurate and sensitive assessment of bone turnover.
Collapse
Affiliation(s)
- D L Broyles
- Beckman Coulter, Inc., San Diego, CA 92196, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|