ABSTRACT
Introduction and objectives: During the lockdown due to the pandemic caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), a decrease in the number of admissions due to acute coronary syndrome (ACS) was observed. The objective of our study was to evaluate the impact lockdown had on the incidence, morbidity and mortality, and management of ACS. Methods: A retrospective and multicenter study was conducted including patients admitted due to ACS from February 14 through June 24, 2020. Patients with acute myocardial infarction and coronary arteries without significant lesions were excluded. The following groups were established based on the period of admission: a) 1 month before lockdown;b) during lockdown;and c) 1 month after lockdown. The differences in mortality seen among the 3 groups were evaluated, as well as the temporal differences reported between symptom onset and the first medical contact (FMC). Results: a total of 634 patients were included (group a, 205;group b, 303, and group c, 126). A 41% decrease in the number of admissions due to ACS was observed during the first month of lockdown compared to the previous month, as well as diagnostic delay during this same period (group a, 66 minutes (45-180), group b, 120 minutes (60-240), and group c, 120 minutes (60-240), P =.007). However, a higher mortality rate during confinement was not reported (RR, 1.26;95%CI, 0.53-2.97;P =.60). Conclusions: During lockdown, a remarkable decrease in the number of admissions due to ACS was observed, and although there was an increase in the time elapsed from symptom onset to the FCM in this period in patients with STEMI, the mortality rate was similar in the 3 groups studied.
ABSTRACT
Introduction: An increase it is being seen in patients who are referred for consultation due to dyspnea persistent after having overcome COVID19. The cause for this sequel is still not entirely clear, but our group has observed -in another study- that the consumption of oxygen (VO2) determined by cardiopulmonar exercise test (CPET) in these patients is low with respect to its predicted (p50). The objective of the present work was to demonstrate this hypothesis against to a control group with similar characteristics, who have not suffered from COVID19. Methods: We conducted a prospective study with military personnel who are part of a corps of army elite. All subjects have performed the same training daily during the last 2 years. They were divided into 3 groups: the first (G1) made up of those who had not suffered from the COVID19 disease;a second group (G2) that had suffered from it, but did not report impairment of functional class (CF);and a third group (G3) who maintained dyspnea persistent 3 months after suffering from the disease. Analytical with NT-proBNP, echocardiogram, basal spirometry, and CPET were performed. None required hospital admission. Results: 36 subjects were included, distributed as follows: G1 (n = 14), G2 (n = 15), G3 (n = 7). The 3 groups had a similar age and BMI. None of the subjects presented alterations in baseline spirometry, neither structural heart disease in the echo, and nor relevant analytical alterations, being NT-proBNP less than 125 pg/ml in all of them. In relation to the response variables cardiovascular, statistical differences (p = 0.03) were observed in peak oxygen consumption predicted among the three groups (% predicted peak VO2), being significantly lower in the G3 subjects. In addition, a trend was observed -in absolute values- of peak VO2 to be lower in G3 -not significant probably due to the small sample size-. They were not objectified significant differences in PulseO2, nor in OUES. No patient presented alterations in the ventilatory efficiency parameters, or in final BR. Conclusions: In our sample, patients who remained with persistent dyspnea after COVID-19, have a lower functional capacity compared to healthy subjects of the same characteristics, and with respect to subjects who after COVID19 do not present any symptoms. This subjective deterioration of the FC can be objectively quantified using CPET, thus reaffirming its value in this context. (Figure Presented).