Resting Heart Rate of the Toad Bufo marinus: A Long-Term Study of Individual Differences and Environmental Influences

1990 ◽  
Vol 63 (2) ◽  
pp. 420-431 ◽  
Author(s):  
Bryan Dumsday
Keyword(s):  
Heart Rate ◽  
Individual Differences ◽  
Environmental Influences ◽  
Bufo Marinus ◽  
Resting Heart Rate ◽  
Term Study ◽  
Long Term Study ◽  
Toad Bufo

Bilateral cervical vagotomy: a long-term study on the unanesthetized dog

1964 ◽  
Vol 206 (2) ◽  
pp. 265-269 ◽  
Author(s):  
Robert S. Shepard ◽  
Albert J. Whitty
Keyword(s):  
Heart Rate ◽  
Diastolic Pressure ◽  
Systolic Pressure ◽  
Complete Loss ◽  
Term Study ◽  
Long Term Study ◽  
High Incidence ◽  
Cervical Vagotomy ◽  
Elevated Heart Rate

Bilateral cervical vagotomy was followed by prolonged changes in heart rate, blood pressure, and respiration, and a progressive deterioration of cardiac function. This study was based on recordings from 18 unanesthetized, unrestrained, reclining dogs prior to and after gastroenterostomy, arterial catheterization, and bilateral cervical vagotomy. During the first 7 days after denervation, the heart rate was almost doubled and the pulse pressure was decreased. The diastolic pressure was increased only on the first day, whereas on the second day after denervation the systolic pressure became significantly lower. The markedly elevated heart rate was maintained for 3 weeks. There was a complete loss of inspiratory tachycardia for 20 weeks, a prolonged inspiratory period for 2 weeks, and a high incidence of retching and vomiting for over 43 weeks. Although the animals refused to exercise strenuously, they were fully ambulatory and showed normal interest in their surroundings. Death in 13 cases occurred by the second week postvagotomy and was associated with lung congestion or consolidation, and in two cases the liver had a nutmeg appearance.

Environmental influences on variation in nest-characteristics in a long-term study population of the Superb Lyrebird, Menura novaehollandiae

2016 ◽  
Vol 116 (4) ◽  
pp. 445-451 ◽  
Author(s):  
Alex C. Maisey ◽  
Norman T. Carter ◽  
Janet M. Incoll ◽  
Andrew F. Bennett
Keyword(s):  
Environmental Influences ◽  
Term Study ◽  
Long Term Study ◽  
Study Population

scholarly journals Long-Term Study of Heart Rate Variability Responses to Changes in the Solar and Geomagnetic Environment

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Abdullah Alabdulgader ◽  
Rollin McCraty ◽  
Michael Atkinson ◽  
York Dobyns ◽  
Alfonsas Vainoras ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Term Study ◽  
Long Term Study

Quinapril for Sclerosis Failed in Long-Term Study

2007 ◽  
Vol 38 (6) ◽  
pp. 14
Author(s):  
DAMIAN MCNAMARA
Keyword(s):  
Term Study ◽  
Long Term Study
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