Participants
hypertension, Chronic kidney disease, Hypertension
PERSISTENT ATRIAL FIBRILLATION, TREATMENT RESISTANT HYPERTENSION, HYPERTENSION, HYPERTENSION, CHRONIC KIDNEY DISEASE
Patients (≥ 18 years) were recruited from the Hypertension Clinic at Aarhus University Hospital, Denmark and from two local private cardiology clinics. Suspected treatment resistant hypertension was the main reason for attending these clinics. Exclusion criteria were pregnancy, change in antihypertensive medication within 14 days prior to inclusion, treating physician preference of using an ABPM-device other than the devices described below, arm circumference above or below available cuff sizes (20–42 cm), inability to give informed consent, or not expecting to sleep during the night on either day of ABPM (nightshift work or other reasons). Patients were not invited to participate if permanent- or persistent atrial fibrillation were noted in their electronic patient records three years prior to inclusion. Information about patient characteristics, comorbidities, and medication were obtained from electronic patient records.Included patients were assigned a hypertension category based on their first ABPM. Normotension/controlled hypertension was defined as 24 h SBP/diastolic BP (DBP) < 130/80 mmHg, mild hypertension as 24 h SBP 130–149 mmHg and moderate/severe hypertension as 24 h SBP ≥ 150 mmHg. Chronic kidney disease was defined as estimated glomerular filtration rate below 60 ml/min/1.73 m