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Research Article Open access CC BY 4.0

Changes of Pre Ejection Period and Left Ventricular Ejection Time during Head up Tilt

Ahlam Kadhim Al Hamdany

Cardiology and Angiology: An International Journal · pp. 12–16 · Published 6 Sep 2014

10.9734/CA/2015/12229

Abstract

Objective of the Study: Evaluate changes in Pre ejection period (PEP) and left ventricular ejection time (LVET) during head up tilt (HUT). Methods: Twenty healthy male subjects were involved in this study, with mean age 29.3±5 years, mean body mass index (BMI) 21.3±0.2Kg/m2. Measurement of PEP, LVET of Doppler wave form of the aortic flow were done at supine, 30 and 60 degree HUT. Measurement of HR and BP were done at these positions of tilting. Comparison of changes of these variables at different degrees of HUT was done by paired T-Test. Results: PEP values were significantly higher in 60 degree and 30 degree HUT than PEP values at supine position (p<0.0001). PEP values at 60 degree HUT were significantly higher than PEP values at 30 degree HUT (P=0.05). LVET values were significantly lower at 60 degree and 30 degree HUT than values at supine position (p<0.001), and LVET values were significantly lower at 60 degree HUT than values at 30 degree HUT (p<0.001). Conclusion: Key findings of PEP and LVET during HUT are progressive prolongation of PEP and shortening of LVET with increasing head up tilting.   

HUT LVET PEP

References (21)

  1. 1 Tilt table testing for assessing syncope [DOI]
  2. 2 Idiopathic postural orthostatic tachycardia syndrome [DOI]
  3. 3 Composite Autonomic Scoring Scale for Laboratory Quantification of Generalized Autonomic Failure [DOI]
  4. 4 CLINICAL GUIDELINE: Diagnosing Syncope: Part 1: Value of History, Physical Examination, and Electrocardiography [DOI]
  5. 5 Left Ventricular Systolic Time Intervals as Indices of Postural Circulatory Stress in Man [DOI]
  6. 6 Cardiovascular responses to upright tilting in healthy subjects [DOI]
  7. 7 Neurally mediated syncope: pathogenesis, diagnosis, and treatment.
  8. 8 Change in pulse transit time and pre-ejection period during head-up tilt-induced progressive central hypovolaemia [DOI]
  9. 9 Automatic detection of left ventricular ejection time from a finger photoplethysmographic pulse oximetry waveform: comparison with Doppler aortic measurement [DOI]
  10. 10 Current trends in etiology, diagnosis, and management of neurocardiogenic syncope [DOI]
  11. 11 Using a Tilt Table to Evaluate Syncope [DOI]
  12. 12 Tilt table test: state of the art.
  13. 13 Decrease in Left Ventricular Ejection Time on Digital Arterial Waveform during Simulated Hypovolemia in Normal Humans [DOI]
  14. 14 Assessment of Systolic Ejection Time as a Hemodynamic Marker of Incipient Bradycardic Vasovagal Syncope. A Pilot Study [DOI]
  15. 15 The fainting patient: value of the head-upright tilt-table test in adult patients with orthostatic intolerance.
  16. 16 Tilt Table Testing [DOI]
  17. 17 Cardiovascular responses to stimulation of carotid baroreceptors in healthy subjects [DOI]
  18. 18 Head-upright tilt table testing [DOI]
  19. 19 DYSAUTONOMIC AND REFLEX SYNCOPE SYNDROMES [DOI]
  20. 20 Detecting Change in Left Ventricular Ejection Time During Head-Up Tilt-Induced Progressive Central Hypovolemia Using a Finger Photoplethysmographic Pulse Oximetry Wave Form [DOI]
  21. 21 Effect of head-up tilt on cardiovascular responses in normal young volunteers.

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