Background The widespread reach of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and its consequences have severely affected the consistency of healthcare systems around the world and caused millions of deaths to date. Understanding the coronavirus disease 2019 (COVID-19) manifestation, progression, and management is crucial for the healthcare personnel caring for COVID-19 patients within the intensive care unit (ICU), as well as for the patients' health progression. Methods A prospective observational study was used to investigate the progression of critically ill COVID-19 positive patients who were admitted to the ICU of Nicosia General Hospital from March 10 to May 1, 2020. All patients over the age of 18 were included in the study; their data were anonymously collected using the institution's electronic medical record system and analyzed in Microsoft Excel (Microsoft Corporation, Redmond, WA). Pregnant women, children, and prisoners were excluded. Results During the study period, a total of 19 patients with a positive result on a reverse-transcriptase polymerase chain reaction (RT-PCR) were included in the study; 74% were men and their mean age was 64 years. Sixty-three percent of the patients were obese, 53% had a history of confirmed hypertension, 68% were admitted with severe respiratory failure, and all of them required invasive mechanical ventilation. Patients were categorized into four groups of ventilation based on the H or L ventilation phenotype in association with co-morbidities. Prone position in the first mechanical ventilation days was found to be more advantageous in L than H phenotype patients, 68% required vasopressor support, and 42% developed acute kidney injury (AKI) during their ICU stay. Diarrhea was with a median day of onset of eight days. Lactate levels above 2 mmol/L in the first four days of admission were correlated with a negative outcome. Nine patients (47%) were successfully discharged from the ICU while 10 (53%) died during their stay. Conclusion In critically ill patients, male gender and obesity are significant risk factors for ICU admission due to COVID-19, and early prone position, mechanical ventilation, and low positive end-expiratory pressures (PEEP) values may be beneficial, especially in the L phenotype category patients. Patients' ventilation phenotype during ICU admission and hospitalization seemed to determine the outcome. Clinical improvement might have been higher and possibly ICU mortality lower if remdesivir was available. Hydroxychloroquine did not seem to improve patient outcomes, a consistent find, as suggested by other studies; on the contrary, it may have contributed to increased mortality rates.
Keywords: covid-19; critically ill; mechanical ventilation.
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