Development and validation of an early warning score to identify COVID-19 in the emergency department based on routine laboratory tests: a multicentre case-control study.

OBJECTIVES: Identifying patients with a possible SARS-CoV-2 infection in the emergency department (ED) is challenging. Symptoms differ, incidence rates vary and test capacity may be limited. As PCR-testing all ED patients is neither feasible nor effective in most centres, a rapid, objective, low-cost early warning score to triage ED patients for a possible infection is developed. DESIGN: Case-control study. SETTING: Secondary and tertiary hospitals in the Netherlands. PARTICIPANTS: The study included patients presenting to the ED with venous blood sampling from July 2019 to July 2020 (n=10 417, 279 SARS-CoV-2-positive). The temporal validation cohort covered the period from July 2020 to October 2021 (n=14 080, 1093 SARS-CoV-2-positive). The external validation cohort consisted of patients presenting to the ED of three hospitals in the Netherlands (n=12 061, 652 SARS-CoV-2-positive). PRIMARY OUTCOME MEASURES: The primary outcome was one or more positive SARS-CoV-2 PCR test results within 1 day prior to or 1 week after ED presentation. RESULTS: The resulting 'CoLab-score' consists of 10 routine laboratory measurements and age. The score showed good discriminative ability (AUC: 0.930, 95% CI 0.909 to 0.945). The lowest CoLab-score had high sensitivity for COVID-19 (0.984, 95% CI 0.970 to 0.991; specificity: 0.411, 95% CI 0.285 to 0.520). Conversely, the highest score had high specificity (0.978, 95% CI 0.973 to 0.983; sensitivity: 0.608, 95% CI 0.522 to 0.685). The results were confirmed in temporal and external validation. CONCLUSIONS: The CoLab-score is based on routine laboratory measurements and is available within 1 hour after presentation. Depending on the prevalence, COVID-19 may be safely ruled out in over one-third of ED presentations. Highly suspect cases can be identified regardless of presenting symptoms. The CoLab-score is continuous, in contrast to the binary outcome of lateral flow testing, and can guide PCR testing and triage ED patients.

[Progression of dyspnea in COVID-19 patients: now what?] / Toename van dyspneu bij covid-19-patiënten.

Venous thromboembolism (VTE) seems to be an underdiagnosed complication in COVID-19 patients. We present three male patients, aged 67, 29 and 71 years, who were admitted to the hospital with COVID-19. They all showed deterioration in the course of their disease caused by VTE. In our hospital, VTE was diagnosed in 10% of COVID-19 patients admitted to the general ward (non-ICU patients) despite regular thromboprophylaxis. Deterioration in the course of COVID-19 has differential diagnoses such as progression of the infection itself, secondary bacterial pneumonia, left heart failure and in our experience not infrequently VTE. We therefore recommend to consider VTE in COVID-19 patients with a sudden clinical deterioration such as hypotension, tachycardia, unexplained hypoxaemia or insufficient clinical improvement and to perform CT-angiography if indicated. A high dose of thromboprophylaxis in COVID-19 patients may be considered because of increased coagulation activation.

[Latent tuberculosis infection after an internship in India]. / Latente tuberculose-infectie na coschap in India.

BACKGROUND: On returning from a period in a country where tuberculosis is endemic, e.g. a medical internship abroad, screening for tuberculosis takes place. The tuberculin skin test (Mantoux test) and the interferon-γ release assay test are available for this purpose. CASE DESCRIPTION: We describe a 23-year-old female medical intern who was treated preventively with a tuberculostatic drug due to a latent tuberculosis infection (LTBI) following an internship in India. This treatment was prematurely discontinued due to increased transaminases (ALT, AST) and physical side effects that impacted negatively on her general wellbeing and on her ability to function during her later internships. CONCLUSION: Long-term preventive treatment for a health care professional with an LTBI is often indicated. However, this treatment can have negative side effects.

[The contribution of an asthma diagnostic consultation service in obtaining an accurate asthma diagnosis for primary care patients: results of a real-life study]. / De waarde van een astma-adviespolikliniek.

OBJECTIVE: Previous studies showed that general practitioners (GPs) have problems in diagnosing asthma accurately, resulting in both under and overdiagnosis. To support GPs in their diagnostic process an asthma diagnostic consultation service (ADCS) was set up. DESIGN: We evaluated the performance of this ADCS by analysing the (dis)concordance between the GPs working hypotheses and the ADCS diagnoses and possible consequences this had on the patients' pharmacotherapy. METHOD: In total 659 patients were included in this study. At this service the patients' medical history was taken and a physical examination and a histamine challenge test were carried out. We compared the GPs working hypotheses with the ADCS diagnoses and the change in medication this incurred. RESULTS: In 52% (n = 340) an asthma diagnosis was excluded. The diagnosis was confirmed in 42% (n = 275). Furthermore, chronic rhinitis was diagnosed in 40% (n = 261) of the patients whereas this was noted in 25% (n = 163) by their GP. The adjusted diagnosis resulted in a change of medication for more than half of all patients. In 10% (n = 63) medication was started because of a new asthma diagnosis. The 'one-stop-shop' principle was met with 53% of patients and 91% (n = 599) were referred back to their GP, mostly within 6 months. Only 6% (n = 41) remained under control of the ADCS because of severe unstable asthma. CONCLUSION: In conclusion, the ADCS helped GPs significantly in setting accurate diagnoses for their patients with an asthma hypothesis. This may contribute to diminish the problem of over and underdiagnosis and may result in more appropriate treatment regimens.