Akershus Cardiac Examination 4 Study

Inclusion Criteria: * Patients ≥18 years old * Tachypnea (respiratory rate ≥20/min) * Admission to Departments under the Division of Medicine at Akershus University Hospital, except the Department of Neurology * \<24 h from hospital admittance to inclusion in the study * Signed written informed consent during the initial phase of the hospitalization Exclusion Criteria: * Previously included into the study (in case of patients presenting with a second hospitalization during the study period) * Known or suspected cancer outside of local control, documented in medical records, at the time of patient inclusion or diagnosed in relation to the index hospitalization * Neurological condition with short life expectancy; e.g. ALS, documented in medical records during screening prior to study entry * Other non-cardiac disease with life expectancy below 1 year, documented in medical records during screening prior to study entry * Obvious non-cardiac cause for tachypnea based on medical records and clinical findings during screening prior to study entry; e.g. anaphylaxis in young patient with known allergy, dyspnea after direct chest trauma, or young patient with fever and positive Covid-19 test on admission. * Patient assessed as non-Internal Medicine patient; e.g. surgical patient * Patients unwilling or unable to comply with the protocol, including Glasgow Coma Scale \<13 on the time of study inclusion * Patients that are intubated for invasive ventilatory therapy before or shortly …