Characteristics of Infradian and Circadian Rhythms in the Persistent Vegetative State  

Oleh:

Guan, J. ; You, C.-G. ; Liu, Y. ; Zhang, R. ; Wang, Z.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: The Journal of International Medical Research vol. 39 no. 06 (Nov. 2011), page 2281-2287.
Topik: Circadian; Circaseptan; Infradian; Persistent Vegetative State; PVS; Traumatic Head Injury; Amplitude; Cosinor

Ketersediaan

Perpustakaan FK Nomor Panggil: J11.K Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

Lihat Detail Induk

Isi artikel

This retrospective study investigated the circadian and infradian characteristics of blood pressure and heart rate in 26 patients with traumatic head injury in a persistent vegetative state (PVS). Systolic and diastolic blood pressures and heart rate were measured every hour for the first 240 h (10 days) following hospital admission. These data were analysed for the presence of circadian and infradian rhythms using the least-squares fit of the cosine function with the single cosinor method. Infradian rhythms were defined as biological rhythms with a period of approximately 7 days (circaseptan rhythms). All the patients studied had circadian and circaseptan rhythms of systolic and diastolic blood pressures and heart rate. The amplitudes of all the circaseptan rhythms were significantly greater than those of the corresponding circadian rhythms. It was concluded that there was an altered association between circadian and infradian blood pressure and heart rate rhythms in patients in a PVS. Circadian and infradian rhythms were present, but the infradian rhythm had a greater amplitude than the circadian rhythm.

Opini Anda

Klik untuk menuliskan opini Anda tentang koleksi ini!

Kembali