Use of the photoplethysmographic technique to analyze the Valsalva maneuver in normal man

E. E. Benarroch, T. L. Opfer-Gehrking, Phillip Anson Low

Research output: Contribution to journalArticle

63 Citations (Scopus)

Abstract

We analyzed the Valsalva maneuver (VM) using a photoplethysmographic technique in 24 normal subjects. We studied the effects of test duration (range 5 to 20 seconds) and magnitude of expiratory pressure (EP, range 20 to 50 mmHg) on maximal (%Δ) and time integrated (int) changes in heart rate (HR), and mean (MAP) and pulse (PP) pressures during phases II and IV. At all EPs, there was correlation (P < 0.01) between %Δ MAP in both late phase II and phase IV and duration of the VM. The Valsalva ratio (VR) correlated with test duration only at high EPs. All responses, except the fall in MAP in early phase II and bradycardia in phase IV, correlated with EPs. The VR correlate not only with HR responses in phases II and IV but also with MAP and PP overshoot in phase IV. Correlations between maximal AP and HR changes in either phase II and IV were poor. Our study indicates that the photoplethysmographic technique allows a more rational interpretation of the VM in the clinical setting. The VR cannot be adequately interpreted without concomitant monitoring of arterial pressure during the VM.

Original languageEnglish (US)
Pages (from-to)1165-1172
Number of pages8
JournalMuscle and Nerve
Volume14
Issue number12
StatePublished - 1991

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Valsalva Maneuver
Heart Rate
Bradycardia
Pulse
Arterial Pressure
Blood Pressure
Pressure

Keywords

  • arterial pressure
  • forced expiration
  • heart rate
  • noninvasive monitoring

ASJC Scopus subject areas

  • Clinical Neurology
  • Neuroscience(all)

Cite this

Use of the photoplethysmographic technique to analyze the Valsalva maneuver in normal man. / Benarroch, E. E.; Opfer-Gehrking, T. L.; Low, Phillip Anson.

In: Muscle and Nerve, Vol. 14, No. 12, 1991, p. 1165-1172.

Research output: Contribution to journalArticle

Benarroch, EE, Opfer-Gehrking, TL & Low, PA 1991, 'Use of the photoplethysmographic technique to analyze the Valsalva maneuver in normal man', Muscle and Nerve, vol. 14, no. 12, pp. 1165-1172.
Benarroch, E. E. ; Opfer-Gehrking, T. L. ; Low, Phillip Anson. / Use of the photoplethysmographic technique to analyze the Valsalva maneuver in normal man. In: Muscle and Nerve. 1991 ; Vol. 14, No. 12. pp. 1165-1172.
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