scholarly journals Evaluation of re-hospitalized COVID-19 patients in a hospital

2020 ◽  
Vol 66 (12) ◽  
pp. 1690-1695
Author(s):  
Ensar Durmus ◽  
Fatih Guneysu
Keyword(s):  
Emergency Service ◽  
Rt Pcr ◽  
Chain Reaction ◽  
Negative Results ◽  
Laboratory Results ◽  
Training And Research ◽  
Unilateral Involvement ◽  
Polymerase Chain ◽  
University Training ◽  
Age Range

SUMMARY PURPOSE: This study intends to investigate the reasons for re-hospitalization, complaints, and prognoses of COVID-19 patients after being discharged. METHODS: COVID-19 patients who were re-hospitalized at the Sakarya University Training and Research Hospital were examined. Reverse transcriptase-polymerase chain reaction (RT-PCR), tomography and laboratory results, demographic characteristics, and prognostic results were recorded retrospectively. RESULTS: A total of 60 patients, including 26 males (43.3%) and 34 females (56.7%), with repeated admissions to the hospital for COVID-19 symptoms, were included in the study with a mean age of 56.9 (± 22.5) (median value = 61, age range = 3–88). The number of days of the second hospitalization was statistically significantly higher (p < 0.05). Patient age and number of days of hospitalization were strongly positively correlated (p < 0.01). A total of 11 patients (18%) had negative results in their first RT-PCR and subsequently tested positive in their second hospitalization. In addition, 10 (17.5%) of the patients who underwent thoracic tomography had unilateral involvement, 34 (59.6%) had bilateral involvement, and 13 (22.8%) had no significant results. Note that 4 (6.6%) of the patients re-hospitalized died in the hospital, while 56 (93.4%) were discharged once more. All of the four patients that died were female with a mean age of 81.5 years. CONCLUSION: Particularly patients with advanced age and comorbidities should be examined more carefully when discharged; if their complaints are repeated, they should be advised to quickly contact the emergency service.

scholarly journals Reducing False Negative PCR Test for COVID-19

2020 ◽  
Vol 9 (3) ◽  
pp. 408-410
Author(s):  
Fatemeh Bahreini ◽  
Rezvan Najafi ◽  
Razieh Amini ◽  
Salman Khazaei ◽  
Saeid Bashirian
Keyword(s):  
Polymerase Chain Reaction ◽  
Real Time ◽  
False Negative ◽  
Rt Pcr ◽  
Chain Reaction ◽  
Creative Commons ◽  
Negative Results ◽  
False Negative Results ◽  
Polymerase Chain ◽  
Pcr Test

As the SARS-CoV-2 (COVID-19) pandemic spreads rapidly, there is need for a diagnostic test with high accuracy to detect infected individuals especially those without symptoms. Real-time polymerase chain reaction (RT-PCR) is a common molecular test for diagnosing SARS-CoV-2. If some factors are not taken into consideration when performing this test, it can have a relatively large number of false negative results. In this article, we discuss important considerations that could lead to false negative test reduction. Key words: • SARS-CoV-2 • COVID-19 • Real time polymerase chain reaction • RT-PCR test • Diagnosis • False negatives • Genetics • Emerging disease   Copyright © 2020 Bahreini et al. Published by Global Health and Education Projects, Inc. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0)which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in this journal, is properly cited.

scholarly journals Deteksi Plasmodium falciparum dengan menggunakan metode real-time polymerase chain reaction di daerah Likupang dan Bitung

2016 ◽  
Vol 4 (1) ◽  
Author(s):  
David C. Tooy ◽  
Janno B. Bernadus ◽  
Angle Sorisi
Keyword(s):  
Polymerase Chain Reaction ◽  
Plasmodium Falciparum ◽  
Real Time ◽  
Real Time Pcr ◽  
18S Rrna ◽  
Rt Pcr ◽  
Chain Reaction ◽  
Negative Results ◽  
Pcr Method ◽  
Polymerase Chain

Abstract: Malaria is one of the most important parasitic disease which is caused by Plasmodium spp. There are approximately 1,2 billion people in the world with high risk of getting malaria. Plasmodium falciparum (P. falciparum) is the cause of tropical malaria or falciparum malaria, and is responsible for most of the mortality rate. Currently, real-time polymerase chain reaction (RT-PCR) is being studied as an alterative of conventional malarian examination. Mangold et al reported that RT-PCR have 94.1% sensitivity and 100% specificity compared to microscopic examination in detecting P. falciparum. The aim of this research is to detect the presence of P. falciparum using RT-PCR in Likupang and Bitung region. This research were using descriptive design to find out the capability of real-time PCR method to detect P. falciparum in Likupang dan Bitung region. The researcher have examined 71 samples which are fulfill the research sample’s criteria. Postive results of P. falciparum found in 18 samples (25,3%) and negative results in 53 samples (74,6%) of total 71 samples with using RT-PCR. No positive results were found in samples from Likupang. There are positive result of P. falciparum in samples from Bitung. It is concluded that RT-PCR method can detect the presence of P. falciparum from the samples obtained from Likupang and Bitung based on the presence of its DNA. This detection efford is done by using 18S rRNA as target gene and ajust specific temperature on the RT-PCR instrument.Keywords: Plasmodium falciparum, Real-time Polymerase Chain Reaction (PCR), DetectionAbstrak: Malaria merupakan salah satu penyakit penting yang disebabkan oleh parasit Plasmodium spp. Kira-kira 1,2 miliar penduduk dunia memiliki risiko tinggi untuk mendapat malaria. Di Indonesia sendiri, terdapat 343.527 kasus terkonfirmasi dan 45 kematian karena malaria. Plasmodium falciparum (P. Falciparum) merupakan penyebab dari malaria tropika atau malaria falsiparum, dan bertanggung jawab atas sebagian besar angka mortalitas. Saat ini Real-Time Polymerase Chain Reaction (RT-PCR) telah banyak diteliti sebagai alternatif dari pemeriksaan malaria. Mangold dkk melaporkan bahwa real-time PCR memiliki nilai sensitivitas 94,1% dan nilai spesifisitas 100% terhadap pemeriksaan mikroskopis dalam mendeteksi P. falciparum. Penelitian bertujuan untuk mendeteksi P. falciparum dengan menggunakan RT-PCR di daerah Likupang dan Bitung. Penelitian ini menggunakan rancangan penelitian deskriptif untuk mengetahui kemampuan metode real-time PCR dalam mendeteksi P. falciparum di daerah Likupang dan Bitung. Tujuan penelitian ini ialah untuk mendeteksi keberadaan P. falciparum dengan menggunakan metode real-time PCR di daerah Likupang dan Bitung. Peneliti memeriksa 71 sampel darah yang memenuhi kriteria sampel penelitian. Hasil positif P. falciparum ditemukan pada 18 sampel (25,3 %) dan hasil negatif pada 53 sampel (74,6 %) dari total 71 sampel dengan menggunakan RT-PCR. Tidak ditemukannya hasil positif P. falciparum pada sampel dari Likupang. Ditemukan hasil positif P. falciparum pada sampel dari Bitung. Simpulan: Metode RT-PCR dapat mendeteksi P. falciparum berdasarkan keberadaan DNA-nya pada sampel yang diperoleh dari daerah Likupang dan Bitung. Deteksi ini berhasil dilakukan dengan menggunakan 18S rRNA sebagai gen target dan pengaturan suhu tertentu pada instrument RT-PCR.Kata kunci: P. falciparum, Real-time Polymerase Chain Reaction (PCR), Detection

scholarly journals Conjunctival polymerase chain reaction tests (RT-PCR) of COVID-19 patients in Shenyang, China

2021 ◽  
Vol 2 (1) ◽  
pp. 15-20
Author(s):  
Li Xu ◽  
Keyword(s):  
Polymerase Chain Reaction ◽  
Clinical Features ◽  
Rt Pcr ◽  
Chain Reaction ◽  
Laboratory Results ◽  
Polymerase Chain

We report the laboratory results of conjunctival RT-PCR tests and some clinical features of these patients infected with COVID 19 in Shenyang, China

scholarly journals Molecular Characteristics of Rotavirus Isolated from a Diarrhea Outbreak in October 2008 in Bintuni Bay, Papua, Indonesia

2014 ◽  
Vol 5 ◽  
pp. VRT.S13555 ◽  
Author(s):  
Eka Pratiwi ◽  
Vivi Setiawaty ◽  
Rudi Hendro Putranto
Keyword(s):  
Genetic Material ◽  
Molecular Characteristics ◽  
Rt Pcr ◽  
Chain Reaction ◽  
Viral Diarrhea ◽  
Severe Diarrhea ◽  
Laboratory Results ◽  
Vp7 Protein ◽  
Stool Specimens ◽  
Polymerase Chain

Background Viral diarrhea continues to be a health problem in Indonesia that often causes outbreaks; in particular, acute viral diarrhea in young children. Rotavirus is the leading cause of severe diarrhea in children under two years of age. This study aimed to determine the genotypes of rotavirus in Bintuni Bay, Papua. Methods Stool specimens from 15 patients were collected and analyzed for rotavirus using an enzyme immunosorbent assay (EIA) and reverse transcriptase-polymerase chain reaction (RT-PCR). Subsequently, we sequenced the genetic material of rotavirus positive samples by RT-PCR and analyzed the results using Mega-4 software. Results Two rotavirus serotypes were identified from the diarrhea outbreak in Bintuni, Papua in October 2008: serotype G1 with G1P[6] (50%) and G1P[8] (16.7%) strains, and serotype G2 with G2P[4] (23.3%) strain. Phylogenetic tree analyses of VP7 protein showed that rotavirus-infected diarrhea in Bintuni Bay, Papua at that time was dominated by the G1 serotype (83%). Conclusion The laboratory results showed that G1 serotype rotavirus was a cause of the outbreak of diarrhea in October 2008 in Bintuni, Papua.

scholarly journals Clinical Manifestations and Pregnancy Outcomes of Covid-19 in Indonesian Referral Hospital in Central Pandemic Area

2021 ◽  
Author(s):  
Muhammad Ilham Aldika Akbar ◽  
Khanizyah Erza Gumilar ◽  
Rino Andriya ◽  
Manggala Pasca Wardhana ◽  
Pungky Mulawardhana ◽  
...  
Keyword(s):  
Pregnant Women ◽  
Pregnancy Outcomes ◽  
Clinical Manifestations ◽  
Referral Hospital ◽  
Rt Pcr ◽  
Chain Reaction ◽  
Laboratory Findings ◽  
Cohort Design ◽  
Laboratory Results ◽  
Polymerase Chain

Objectives:. The data on clinical manifestations and pregnancy outcomes of pregnant women with COVID-19 are limited, particularly in developing countries. The aim of this study is to analyze the clinical manifestations and pregnancy outcomes in COVID-19 maternal cases in a large referral hospital in Indonesia Methods: The study used a prospective cohort design of all pregnant women with suspected COVID-19. Subjects were divided into COVID-19 and non COVID-19 group based on real-time polymerase chain reaction (RT-PCR) of SARS-CoV-2. The clinical characteristics, laboratory results, and pregnancy outcomes were then compared between both groups. Results: From 141 suspected maternal cases, 62 COVID-19 cases were confirmed (43.9%), while 79 suspected cases were found to be negative (56.1%). The clinical manifestations and laboratory findings between the two groups were not significantly different (p>0.05). However, the maternal mortality directly caused by COVID-19 was significantly higher compared to the non-COVID-19 group (8.3 vs 1.3%; p=0.044; OR 6.91, 95% CI: 0.79-60.81). Conclusions: The clinical manifestation and laboratory of suspected pregnant women with positive and negative RT-PCR COVID-19 result are similiar. However, within the Indonesian setting, COVID-19 strongly increases the risk of maternal death through both direct and indirect factors.

scholarly journals Patients with Initial Negative RT-PCR and Typical Imaging of COVID-19: Clinical Implications

2020 ◽  
Vol 9 (9) ◽  
pp. 3014 ◽  
Author(s):  
Florent Baicry ◽  
Pierrick Le Borgne ◽  
Thibaut Fabacher ◽  
Martin Behr ◽  
Elena Laura Lemaitre ◽  
...  
Keyword(s):  
Bayesian Methods ◽  
Clinical Presentation ◽  
Chronic Respiratory Disease ◽  
Clinical Implications ◽  
Rt Pcr ◽  
Chain Reaction ◽  
Negative Results ◽  
Lower Oxygen ◽  
Baseline Characteristics ◽  
Polymerase Chain

The sensitivity of reverse transcriptase polymerase chain reaction (RT-PCR) has been questioned due to negative results in some patients who were strongly suspected of having coronavirus disease 2019 (COVID-19). The aim of our study was to analyze the prognosis of infected patients with initial negative RT-PCR in the emergency department (ED) during the COVID-19 outbreak. This study included two cohorts of adult inpatients admitted into the ED. All patients who were suspected to be infected with SARS-CoV-2 and who underwent a typical chest CT imaging were included. Thus, we studied two distinct cohorts: patients with positive RT-PCR (PCR+) and those with negative initial RT-PCR (PCR–). The data were analyzed using Bayesian methods. We included 66 patients in the PCR– group and 198 in the PCR+ group. The baseline characteristics did not differ except in terms of a proportion of lower chronic respiratory disease in the PCR– group. We noted a less severe clinical presentation in the PCR– group (lower respiratory rate, lower oxygen need and mechanical ventilation requirement). Hospital mortality (9.1% vs. 9.6%) did not differ between the two groups. Despite an initially less serious clinical presentation, the mortality of patients infected by SARS-CoV-2 with a negative RT-PCR did not differ from those with positive RT-PCR.

scholarly journals SARS-CoV-2 Detection in Fecal Sample from a Patient with Typical Findings of COVID-19 Pneumonia on CT but Negative to Multiple SARS-CoV-2 RT-PCR Tests on Oropharyngeal and Nasopharyngeal Swab Samples

Medicina ◽  
2021 ◽  
Vol 57 (3) ◽  
pp. 290
Author(s):  
Barbara Brogna ◽  
Carlo Brogna ◽  
Mauro Petrillo ◽  
Adriana Modestina Conte ◽  
Giulio Benincasa ◽  
...  
Keyword(s):  
Respiratory Tract ◽  
Clinical Symptoms ◽  
Nasopharyngeal Swab ◽  
Upper Respiratory Tract ◽  
Rt Pcr ◽  
Chain Reaction ◽  
Negative Results ◽  
Upper Respiratory ◽  
Polymerase Chain ◽  
Pcr Test

Reverse transcriptase polymerase chain reaction (RT-PCR) negative results in the upper respiratory tract represent a major concern for the clinical management of coronavirus disease 2019 (COVID-19) patients. Herein, we report the case of a 43-years-old man with a strong clinical suspicion of COVID-19, who resulted in being negative to multiple severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RT-PCR tests performed on different oropharyngeal and nasopharyngeal swabs, despite serology having confirmed the presence of SARS-CoV-2 IgM. The patient underwent a chest computed tomography (CT) that showed typical imaging findings of COVID-19 pneumonia. The presence of viral SARS-CoV-2 was confirmed only by performing a SARS-CoV-2 RT-PCR test on stool. Performing of SARS-CoV-2 RT-PCR test on fecal samples can be a rapid and useful approach to confirm COVID-19 diagnosis in cases where there is an apparent discrepancy between COVID-19 clinical symptoms coupled with chest CT and SARS-CoV-2 RT-PCR tests’ results on samples from the upper respiratory tract.

scholarly journals Red blood cells in cerebrospinal fluid as possible inhibitory factor for enterovirus RT-PCR

2016 ◽  
Vol 74 (10) ◽  
pp. 810-815 ◽  
Author(s):  
Sérgio Monteiro de Almeida ◽  
Sônia Mara Raboni ◽  
Meri Bordignon Nogueira ◽  
Luine R. Renaud Vidal
Keyword(s):  
Polymerase Chain Reaction ◽  
Cerebrospinal Fluid ◽  
Red Blood Cells ◽  
Blood Cells ◽  
Virus Detection ◽  
Inhibitory Factor ◽  
Rt Pcr ◽  
Chain Reaction ◽  
Negative Results ◽  
Polymerase Chain

ABSTRACT The presence of hemoglobin in samples are considered an important inhibitory factor for polymerase chain reaction (PCR). The aim of this study was to examine the influence of red blood cells (RBC)s in cerebrospinal fluid (CSF) as an inhibitory factor to reverse transcription polymerase chain reaction (RT-PCR) for enteroviruses (EV). Forty-four CSF samples from patients showing characteristics of viral meningitis were assessed for EV by RT-PCR. Viral RNA extracted with guanidine isothyocianate buffer and virus detection was performed by in-house nested PCR. Positivity for EV RT-PCR was higher in CSF samples without RBCs than in samples with RBCs: 13(26%) and 36(9.2%), p = 0.001. In the group with positive EV RT-PCR, the mean + SD CSF RBC was 37 ± 183 cell/mm3; the group with negative results had 580 + 2,890 cell/mm3 (p = 0.007). The acceptable upper limit for CSF RBCs that could not influence RT-PCR was 108 cells/mm3. CSF samples with negative results for EV RT-PCR have more erythrocytes.

scholarly journals CT FINDINGS IN INITIAL RT-PCR NEGATIVE TESTING COVID 19: BASED ON STUDY IN A LARGEST TERTIARY CARE CENTRE OF CENTRAL INDIA.

2020 ◽  
pp. 33-36
Author(s):  
Shyam Chhadi ◽  
Aarti Anand ◽  
Ravi Kumar
Keyword(s):  
Polymerase Chain Reaction ◽  
Reverse Transcription ◽  
Ground Glass ◽  
Imaging Findings ◽  
Rt Pcr ◽  
Chain Reaction ◽  
Negative Results ◽  
Polymerase Chain ◽  
Ct Features ◽  
Pcr Test

SUMMARY STATEMENT CT imaging findings in patients of suspected 2019-nCoV infection, who have initial negative results of reverse transcription–polymerase chain reaction (RT-PCR) testing. OBJECTIVE The purpose of this study is to explore the diagnostic value of CT over RT-PCR in the diagnosis of corona virus disease (COVID-19) pneumonia, especially for patients who have initial negative results of reverse transcription–polymerase chain reaction (RT-PCR) testing. MATERIALS AND METHODS Patients with suspected COVID-19 pneumonia from April 1, 2020, to September 30, 2020, were included. They are initially underwent RT-PCR followed by HRCT thorax after 1 day of negative initial RT-PCR testing. The imaging findings were obtained and compared with CT findings of those patients who have confirmed initial reverse transcription–polymerase chain reaction (RT-PCR) testing. RESULTS Total sixty (40 men, 20 women) patients who have initial negative RT-PCR testing but are highly suspicious for 2019-nCoV infection were included in our study and their age range between 22 years to 70 years. In our study most of the findings were seen involved the multiple( 70%) lobes in both lungs. The main CT features were ground-glass opacity (90%) and consolidation (60%) with a sub pleural (100%) and peri hilar or central distribution. The other CT features included air bronchograms (60%), vascular enlargement and interlobular septal thickening (50%), tree in bud appearance and pleural effusions (10%). when CT of patient with initial negative RT-PCR test were compared with CT of patients with initial positive RT-PCR test , it was found that most of the findings like ground glass opacities and consolidatory changes were also likely present in these group (p>0.05). CONCLUSION Chest CT is an important tools for screening and diagnosing the patients who are initial negative RT-PCR however they are highly suspicious and having symptoms like 2019-nCoV infection.

scholarly journals The Issue of Recurrently Positive Patients Who Recovered From COVID-19 According to the Current Discharge Criteria: Investigation of Patients from Multiple Medical Institutions in Wuhan, China

2020 ◽  
Vol 222 (11) ◽  
pp. 1784-1788 ◽  
Author(s):  
You Zou ◽  
Bin-Ru Wang ◽  
Liu Sun ◽  
Shan Xu ◽  
Yong-Gang Kong ◽  
...  
Keyword(s):  
Test Results ◽  
Rt Pcr ◽  
Chain Reaction ◽  
Current Discharge ◽  
Negative Results ◽  
Medical Institutions ◽  
Polymerase Chain ◽  
Discharge Criteria ◽  
Test Result ◽  
Pcr Test

Abstract The current discharge criteria for COVID-19 require that patients have 2 consecutive negative results for reverse transcription polymerase chain reaction (RT-PCR) detection. Here, we observed that recurrent positive RT-PCR test results in patients with 3 consecutive negative results (5.4%) were significantly decreased compared with those in patients with 2 consecutive negative results (20.6%); such patients reported positive RT-PCR test results within 1 to 12 days after meeting the discharge criteria. These results confirmed that many recovered patients could show a positive RT-PCR test result, and most of these patients could be identified by an additional RT-PCR test prior to discharge.

Sign in / Sign up

Export Citation Format

Share Document