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Hemodynamic characteristics of high-altitude headache following acute high altitude exposure at 3700 m in young Chinese men

Overview of attention for article published in The Journal of Headache and Pain, May 2015
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Title
Hemodynamic characteristics of high-altitude headache following acute high altitude exposure at 3700 m in young Chinese men
Published in
The Journal of Headache and Pain, May 2015
DOI 10.1186/s10194-015-0527-3
Pubmed ID
Authors

Shi-Zhu Bian, Jun Jin, Qian-Ning Li, Jie Yu, Cai-Fa Tang, Rong-Sheng Rao, Shi-Yong Yu, Xiao-Hui Zhao, Jun Qin, Lan Huang

Abstract

This study aimed to identify the systemic and cerebral hemodynamic characteristics and their roles in high-altitude headache (HAH) among young Chinese men following acute exposure. The subjects (n = 385) were recruited in June and July of 2012. They completed case report form questionnaires, as well as heart rate (HR), blood pressure, echocardiogram and transcranial Doppler examinations at 3700 m following a two-hour plane flight. A subgroup of 129 participants was examined at two altitudes (500 and 3700 m). HAH was characterized by increased HR and cardiac output (CO) and lower saturation pulse oxygen (SpO2) (all p < 0.05). The change in tricuspid regurgitation was also different between the HAH positive (HAH+) and HAH negative (HAH-) subjects. Furthermore, the HAH+ subjects exhibited faster mean (Vm), systolic (Vs) and diastolic (Vd) velocities in the basilar artery (BA; all p < 0.05) and a faster Vd ( 25.96 ± 4.97 cm/s vs. 24.76 ± 4.76 cm/s, p = 0.045) in the left vertebral artery (VA). The bilateral VA asymmetry was also significantly different between the two groups. The pulsatility index (PI) and resistance index (RI) of left VA were lower in the HAH subjects (p < 0.05) and were negatively correlated with HAH (p < 0.05). Baseline CO and Vm in left VA (or right MCA in different regressions) were independent predictors for HAH, whereas CO/HR and ΔVd (Vd difference between bilateral VAs) were independent risk factors for HAH at 3700 m. HAH was characterized, in part, by increased systemic hemodynamics and posterior cerebral circulation, which was reflected by the BA and left VA velocities, and lower arterial resistance and compliance. Furthermore, baseline CO and Vm in left VA or right MCA at sea level were independent predictors for HAH, whilst bilateral VA asymmetry may contribute to the development of HAH at high altitude.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 28 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
India 1 4%
Unknown 27 96%

Demographic breakdown

Readers by professional status Count As %
Researcher 6 21%
Student > Ph. D. Student 4 14%
Student > Bachelor 3 11%
Lecturer 2 7%
Other 2 7%
Other 5 18%
Unknown 6 21%
Readers by discipline Count As %
Medicine and Dentistry 12 43%
Nursing and Health Professions 2 7%
Engineering 2 7%
Agricultural and Biological Sciences 1 4%
Sports and Recreations 1 4%
Other 3 11%
Unknown 7 25%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 16 May 2015.
All research outputs
#18,572,005
of 23,849,058 outputs
Outputs from The Journal of Headache and Pain
#1,172
of 1,417 outputs
Outputs of similar age
#182,304
of 266,367 outputs
Outputs of similar age from The Journal of Headache and Pain
#19
of 26 outputs
Altmetric has tracked 23,849,058 research outputs across all sources so far. This one is in the 19th percentile – i.e., 19% of other outputs scored the same or lower than it.
So far Altmetric has tracked 1,417 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 17.6. This one is in the 14th percentile – i.e., 14% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 266,367 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 26th percentile – i.e., 26% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 26 others from the same source and published within six weeks on either side of this one. This one is in the 26th percentile – i.e., 26% of its contemporaries scored the same or lower than it.