TTR and respiratory failure: Univariate analysis demonstrated significant differences (p < 0.05) between the survival and death groups in various parameters, including troponin-T, creatine kinase isoenzyme, d-dimer, B-type natriuretic peptide, aspartate aminotransferase, C-reactive protein, creatinine, white blood cell count, total bilirubin, albumin, prealbumin, hematocrit, creatine kinase, left ventricular ejection fraction, systolic blood pressure, diastolic blood pressure, heart rate, respiratory rate, age, smoking history, gender, and respiratory failure.