[Use of discontinuous long-term blood pressure measurement (Spacelabs 90207) in patients with sleep apnea--a comparison with intra-arterial data].
Circadian blood pressure (BP) profile is an important determinant of cardiovascular risk. Patients with Sleep-Related Breathing Disorders (SRBD) often suffer from arterial hypertension and an altered circadian blood pressure profile. The aim of this study was to compare intraarterial blood pressure recordings with DBPR (Discontinuous Blood Pressure Recorder using Spacelabs 90207) in 20 patients with mild to moderate arterial hypertension and mild to moderate SRBD. Our results of overnight measurements show that the mean arterial pressure seems to be the most reliable value (mean difference Spacelabs-Part: +1.7 mmHg). In contrast, the systolic BP was systematically underestimated (mean: -17.5 mmHg) while the diastolic value was systematically overestimated (mean: +9.3 mmHg) by Spacelabs. Our data show that neither systolic nor diastolic BP from the Spacelabs measurement reflected the real cardiovascular load. Since the mean arterial pressure proved to be the most reliable value, this value should be used to distinguish between dipper and non-dipper in circadian BP profiles. Further, reliable noninvasive continuous measurement of the BP is required to assess the real vascular load in patients with SRBD during the night.
Heitmann
J
J
Medizinische Poliklinik, Philipps-Universität Marburg.
Grote
L
L
Netzer
M
M
Krzyzanek
E
E
Ploch
T
T
Peter
J H
JH
D000328:Adult; D000368:Aged; D001794:Blood Pressure / Q000502:physiology*; D015924:Blood Pressure Monitors; D002940:Circadian Rhythm / Q000502:physiology; D006801:Humans; D006973:Hypertension / Q000175:diagnosis / Q000503:physiopathology; D008134:Long-Term Care; D008297:Male; D008875:Middle Aged; D012016:Reference Values; D012891:Sleep Apnea Syndromes / Q000175:diagnosis* / Q000503:physiopathology