Evidence of transient heart rate change after smoking cessation

1992 ◽  
Vol 106 (3) ◽  
pp. 337-340 ◽  
Author(s):  
Kenneth D. Ward ◽  
Arthur J. Garvey ◽  
Ryan E. Bliss
Keyword(s):  
Heart Rate ◽  
Smoking Cessation ◽  
Heart Rate Change ◽  
Rate Change

Heart-rate change as a component of the orienting response.

1966 ◽  
Vol 65 (5) ◽  
pp. 305-320 ◽  
Author(s):  
Frances K. Graham ◽  
Rachel K. Clifton
Keyword(s):  
Heart Rate ◽  
Orienting Response ◽  
Heart Rate Change ◽  
Rate Change

A prospective randomised study on efficacy of music for decreasing preoperative anxiety in children

2020 ◽  
pp. 175045892093978
Author(s):  
Cynthia V Nguyen ◽  
Madeleine Alvin ◽  
Carol Lee ◽  
Darrell George ◽  
Allison Gilmore ◽  
...  
Keyword(s):  
Heart Rate ◽  
Operating Room ◽  
Heart Rate Change ◽  
Preoperative Anxiety ◽  
Patient Choice ◽  
Rate Change ◽  
Waiting Room ◽  
Randomised Study ◽  
Music Medicine ◽  
Significant Difference

Background The operating room can be a frightening environment for paediatric patients. This study investigated whether music medicine can mitigate preoperative anxiety in children. Materials and methods One hundred and fifty children undergoing general anaesthesia were randomised to listen to music of the child’s choice, lullaby music or no music before induction. Heart rates were measured in the waiting room, upon first entry into the operating room and just prior to induction. Results There was no significant difference in average heart rate change from the waiting room to induction in the patient choice, lullaby and control groups. Older age was associated with higher heart rate changes between baseline and entering the operating room. Pharmacologic sedation showed a significant beneficial effect on heart rate change at induction. Conclusion Use of music medicine in the operating room does not show efficacy to reduce anxiety in children based on heart rate changes.

Uncertainty of Reinforcement Consequences in Pavlovian Conditioning of Dogs

1969 ◽  
Vol 24 (1) ◽  
pp. 147-152E ◽  
Author(s):  
Fred L. Royer
Keyword(s):  
Heart Rate ◽  
Pavlovian Conditioning ◽  
Heart Rate Change ◽  
Rate Change ◽  
Temporal Uncertainty ◽  
Significant Difference ◽  
Mean Heart Rate

Four dogs were given discriminative conditioning using 3 CSs. One CS (CS + C) was always reinforced with shock, another (CS−) was never reinforced while a third (CS + U) was reinforced 75% of the trials with reinforcement occurring either immediately, 2 or 4 sec. after the termination of CS. Heart-rate change was greater for CS + C than for CS + U or CS there was no significant difference between the latter. The termination of the CS + U appeared to be informative; mean heart rate during the post-CS period on unreinforced trials of CS + U was not significantly different from that during CS + C. Flexion latencies were longer to CS + U. The cardiac UR was less for CS + U than for CS + C, suggesting that temporal uncertainty inhibits the UR.

Human fetal heart rate change and movement in response to sound and vibration

1971 ◽  
Vol 109 (1) ◽  
pp. 86-90 ◽  
Author(s):  
J.C. Grimwade ◽  
D.W. Walker ◽  
M. Bartlett ◽  
S. Gordon ◽  
C. Wood
Keyword(s):  
Heart Rate ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Heart Rate Change ◽  
Rate Change ◽  
Human Fetal Heart ◽  
Fetal Heart Rate Change

Infant and adult grating acuity estimated by VEPs and heart-rate change

1991 ◽  
Vol 14 (3) ◽  
pp. 365-382 ◽  
Author(s):  
Steve Suter ◽  
Penelope S. Suter ◽  
C.Donel Crow
Keyword(s):  
Heart Rate ◽  
Heart Rate Change ◽  
Rate Change ◽  
Grating Acuity

scholarly journals Ambulatory vital signs in the workup of pulmonary embolism using a standardized 3-minute walk test

CJEM ◽  
2015 ◽  
Vol 17 (3) ◽  
pp. 270-278
Author(s):  
Qamar Amin ◽  
Jeffrey J. Perry ◽  
Ian G. Stiell ◽  
Subhra Mohapatra ◽  
Abdulaziz Alsadoon ◽  
...  
Keyword(s):  
Heart Rate ◽  
Pulmonary Embolism ◽  
Oxygen Saturation ◽  
Tertiary Care ◽  
Heart Rate Change ◽  
Rate Change ◽  
Walk Test ◽  
Tertiary Care Centre ◽  
Absolute Decrease ◽  
Minute Walk

AbstractObjectiveDiagnosing pulmonary embolism can be difficult given its highly variable clinical presentation. Our objective was to determine whether a decrease in oxygen saturation or an increase in heart rate while ambulating could be used as an objective tool in the diagnosis of pulmonary embolism.MethodsThis was a two-site tertiary-care-centre prospective cohort study that enrolled adult emergency department or thrombosis clinic patients with suspected or newly confirmed pulmonary embolism. Patients were asked to participate in a standardized 3-minute walk test, which assessed ambulatory heart rate and ambulatory oxygen saturation. The primary outcome was pulmonary embolism.ResultsWe enrolled 114 patients, including 30 with pulmonary embolism (26.3%). A ≥2% absolute decrease in ambulatory oxygen saturation and an ambulatory change in heart rate >10 beats per minute (BPM) were significantly associated with pulmonary embolism. An ambulatory heart rate change of >10 BPM had a sensitivity of 96.6% (95% confidence interval [CI] 83.3 to 99.4) and a specificity of 31.0% (95% CI 22.1 to 45.0) for pulmonary embolism. A ≥2% absolute decrease ambulatory oxygen saturation had a sensitivity of 80.2% (95% CI 62.7 to 90.5) and a specificity of 39.3% (95% CI 29.5 to 50.0) for pulmonary embolism. The combination of both variables yielded a sensitivity of 100.0% (95% CI 87.0 to 100.0) and a specificity of 11.0% (95% CI 6.6 to 21.0).ConclusionIn summary, our study found that an ambulatory heart rate change of >10 BPM or a ≥2% absolute decrease in ambulatory oxygen saturation from baseline during a standardized 3-minute walk test are highly correlated with pulmonary embolism. Although the findings appear promising, neither of these variables can currently be recommended as a screening tool for pulmonary embolism until larger prospective studies examine their performance either alone or with pre-existing rules.

Processing fearful and neutral sentences: Memory and heart rate change

1989 ◽  
Vol 3 (3) ◽  
pp. 179-195 ◽  
Author(s):  
Scott R. Vrana ◽  
Bruce N. Cuthbert ◽  
Peter J. Lang
Keyword(s):  
Heart Rate ◽  
Heart Rate Change ◽  
Rate Change
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