ABSTRACT
The pandemic of Coronavirus Disease 2019 (COVID19) has compelled scientists to create highly reliable diagnostic tools quickly in order to successfully and properly diagnose this pathology and thereby prevent infection transmission. Even though structural and molecular properties of the severe acute respiratory syndrome coronavirus 2 (SARSCoV2) were previously unknown, private research institutes and biomedical firms quickly developed numerous diagnostic procedures beneficial for making a correct detection of COVID19. Rapid antigen or antibody testing, immunoenzymatic serological tests, and RT-PCR based molecular assays are the most frequently used and validated procedures now available. The PCR has grown in popularity in molecular diagnostics to the point where it is still considered the gold standard for finding nucleotides from a variety of sources becoming an indispensable tool in the research lab. Because of its improved speed, sensitivity, reproducibility, and lower likelihood of carry-over contamination, real-time PCR has gained greater popularity. Currently, five different chemistries are employed to detect PCR product during real-time PCR. The self- fluorescing amplicons, DNA binding fluorophores, 5? endonuclease, neighbouring linear and hairpin oligoprobes, and self-fluorescing amplicons are all detailed in depth. We also go through the problems that have hampered the development of multiplex real-time PCR and the importance of real-time PCR in nucleic acid quantification.
ABSTRACT
OBJECTIVE: To discuss the effects of Lianhua Qingwen granules plus arbidol on treatment of mild corona virus disease-19 (COVID-19). METHODS: A total of 295 COVID-19 patients (2020.2.17-2020.3.6) in Wuhan Third Hospital were chosen and randomly assigned to control group (n=148) and observation group (n=147). The control group orally took arbidol and the observation group took Lianhua Qingwen granules and arbidol. TCM symptom scores, white blood count (WBC), lymphocyte count (LYM), C-reactive protein (CRP), procalcitonin (PCT) and chest CT review conditions were compared. RESULTS: Total effective rate in the observation group was significantly higher than control group ((80.95% vs. 64.86%); severe transfer rate in the observation group was lower than control group (14.29% vs. 23.65%) (P0.05); after 7 d of treatment, TCM syndromes like fever, weakness, cough, throat dryness and sore and chest discomfort, CRP and PCT levels in the observation group were significantly lower than control group (P0.05); WBC and LYM levels in the observation group were significantly higher than control group (P0.05); based on CT review, effective cure rate in the observation group (69.39%) and control group (62.84%) was not significantly different (P0.05). Both of groups had no serious adverse reactions. CONCLUSION: Lianhua Qingwen granules combined with arbidol can relieve the clinical symptoms, adjust the inflammatory factors, increase the curative effects and reduce the severe transfer rate.
ABSTRACT
The digestive tract is a target organ attacked by COVID-19. It is also the earliest affected organ other than the lung and must bear side effects from the anti-virus chemotherapy such as LPV/r. In this article, we aim to provide practical recommendations for a nutritional and metabolic management strategy for severe corona virus disease-19 (COVID-19) patients. These recommendations are based on the newest pathophysiological findings on the risk factors of malnutrition for COVID-19. We also systematically retrieve literatures on nutritional therapy for acute lung injuries from international and Chinese databases according to evidence-based principles. Our suggestions are: 1) Physicians should be mindful of gut injury when they focus on respiratory support, by monitoring and managing the nutritional status; 2) Periodical and dynamic nutritional risk evaluation is needed; 3) For severe patients, the feeding target of calorie and protein should be down-regulated; 4)The using of ω-3 fatty acids products should be in accordance with pharmacological indications; the forms and dosage should be determined individually.
ABSTRACT
Objective@#To explore the perioperative management and infection prevention methods for acute eye diseases during the outbreak of 2019 novel coronavirus disease (COVID-19).@*Methods@#Since the COVID-19 was included in the Class B infectious diseases and was managed according to Class A infectious diseases in China, 127 patients who underwent ophthalmic surgery were enrolled at First Affiliated Hospital of Army Military Medical University from January 21 to February 19,2020. The perioperative management according to the national epidemic prevention and control requirements was summarized, and the perioperative clinical management that should be taken during the epidemic prevention period were discussed.@*Results@#One hundred and twenty-seven patients underwent ophthalmic surgeries, including emergency surgery, daytime surgery and other surgeries for sight-threatening diseases. The methods of anesthesia included general anesthesia, local anesthesia and ocular superficial anesthesia. According to the national epidemic prevention and control requirements, epidemic screening for these patients and infectious managing measures were performed during the perioperative period, including the sterilization of relevant environment and equipments, the personal medical prevention and protection for medical staffs and patients, which made surealltheoperationswent smoothlyand safely. There were no 2019-nCoV infection, surgical-relative infection, crossing infection and operation-related complications occurred. Meanwhile, there were not COVID-19-related infection events of medical staffs. The air sampling compliance rate in the operating room, ward, examination and other areas was 100%.@*Conclusions@#During the prevention and control period of the epidemic of COVID-19, strict adherence to the prevention and control measures can effectively ensure the smooth implementation of the operation and the perioperative safety of medical staff and patients.
ABSTRACT
Objective@#To evaluate the aerosol concentration(PM2.5,PM10.0 and aerosol particle number) formation in non-contact "air-puff" tonometry and provide suggestions for medical workers to take appropriate daily protection during the prevalence of 2019-nCoV.@*Methods@#A cross-sectional study was carried out in this study. Thirty healthy subjects were enrolled on February 22, 2020 at Eye Hospital of Wenzhou Medical University. The intraocular pressure (IOP) was measured by non-contact "air-puff" tonometer in the ophthalmic consulting room and the hall with or without masks. PM2.5, PM10.0 and aerosol particles were recorded by air quality detector. The cumulative effects of IOP measurement, PM2.5, PM10.0 and aerosol particle number were analyzed, and the aerosol density of subjects with and without masks was compared.@*Results@#The PM2.5, PM10.0 and aerosol particles produced by the non-contact "air-puff" tonometry and increased with the increase of spray times. The IOP curves of 60 eyes of 30 subjects were measured respectively in two environments of medical consulting room and medical institution hall. It was found that PM2.5, pm10.0 and particle number fluctuated and increased with the increase of IOP measurement person times, showing cumulative effect, and the accumulation speed of aerosol density in hall was faster than that in consulting room. The density of PM2.5 and PM10.0 produced without gauze mask were (53.417±2.306) and (85.350± 3.488) μg/m3, which were higher than those of (50.567±0.862) and (80.617±1.463) μg/m3 with gauze mask. The differences were statistically significant (P=0.028, 0.019).@*Conclusions@#Aerosol can be produced by non-contact "air-puff" tonometer spraying, and it fluctuates with the increase of spraying times, showing a cumulative effect. The aerosol accumulation is higher in the hall with insufficient air circulation. And more aerosol can be produced without gauze mask.