| AF | Atrial fibrillation |
| Bpm | Beats per minute |
| CIP | Critically ill patients |
| e.g. | For example |
| HR | Heart rate |
| ICU | Intensive care unit |
| IQR | Interquartile range |
| L-group | Landiolol group |
| LVEF | Left ventricular ejection fraction |
| Min. | Minutes |
| MmHg | Millimeters of mercury |
| NL-group | No landiolol group |
| NSTEMI | Non–ST-elevation myocardial infarction |
| OAC | Oral anticoagulation |
| PaO2 | Arterial oxygen pressure |
| pH | Potential of hydrogen |
| SpO2 | Oxygen saturation |
| SR | Sinus rhythm |
| STEMI | ST-elevation myocardial infarction |
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