Hubungan Rasio PAO2/FIO2 dan Kadar D-Dimer terhadap Kadar ST2 Terlarut dan Spirometri pada Pasien dengan Penyakit Kardiovaskular Pasca Covid-19 Varian Omicron = Relationship of PaO2/FiO2 Ratio and D-Dimer Levels to sST2 Levels and Spirometry Profile in Patients with Post COVID-19 Variant Omicron with Cardiovascular Disease