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Orcadian Blood Pressure and Heart Rate Profiles in Normotensive Patients with Mild Hyperthyroidism
| Content Provider | Scilit |
|---|---|
| Author | Kohno, Isao Iwasaki, Hiroshi Okutani, Mitsuaki Mochizuki, Yasuaki Sano, Sohichi Satoh, Yoshioki Ishihara, Tsukasa Ishii, Hiroyuki Ijiri, Hiroshi Komori, Sadayoshi Tamura, Kohji |
| Copyright Year | 1998 |
| Description | We investigated the influence of thyroid hormones on the circadian blood pressure (BP) and heart rate (HR) variations in 12 normotensive subjects and 12 normotensive patients with mild hyperthyroidism. BP and HR were monitored every 30 minutes for 48 h, and electrocardiograms (ECGs) were recorded to measure the RR interval of the ECGs. We analyzed the circadian BP and HR variations, HR variability, and the morning rise in BP and HR. There was no significant difference in the average 24 h BP between groups. HR and pulse pressure were higher in the hyperthyroid group than in the control group. Though the circadian BP pattern was similar in both groups, HR decreased at night in the control group, but not in the hyperthyroid group. Spectrum analysis of the RR interval showed no increase in the high-frequency (HF) component at night in patients with hyperthyroidism. The HR did not show a morning rise in the hyperthyroid group. These findings indicate that the circadian rhythm of HR was not preserved in patients with mild hyperthyroidism. The circadian BP rhythm was similar in normotensive subjects and normotensive patients with mild hyperthyroidism, suggesting that it resulted from factors other than thyroid hormone. |
| Related Links | http://www.tandfonline.com/doi/pdf/10.3109/07420529808998694 |
| Ending Page | 347 |
| Page Count | 11 |
| Starting Page | 337 |
| ISSN | 07420528 |
| e-ISSN | 15256073 |
| DOI | 10.3109/07420529808998694 |
| Journal | Chronobiology international |
| Issue Number | 4 |
| Volume Number | 15 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 1998-01-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Chronobiology International Peripheral Vascular Disease Heart Rate Blood Pressure Normotensive Patients Rate Profiles Mild Hyperthyroidism Orcadian Blood |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physiology Physiology (medical) |
