What does this research mean for the field?

The spontaneous baroreflex method, utilizing continuous finger arterial pressure and electrocardiogram recordings, provides a reliable and noninvasive assessment of human vagal cardiac baroreflex sensitivity that correlates highly with traditional drug-induced methods. Novelty: ClaimNovelty.METHODOLOGICAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

The aim is to compare spontaneous and drug-induced methods for assessing cardiac baroreflex sensitivity.

May 1, 1995Hypertension

Spontaneous Cardiac Baroreflex in Humans

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Why the study?

Does the spontaneous baroreflex method reliably assess baroreflex sensitivity compared to the drug-induced method in healthy volunteers?

Population

8 supine healthy volunteers

Comparison

Spontaneous baroreflex method vs Drug-induced method

Design

Other

Authors

JPJoel L. ParlowUniversity of Copenhagen JVJean–Paul VialeHôpital de la Croix-Rousse GAG. AnnatUniversité Claude Bernard Lyon 1

Discussion

Member takes

Implication

Supports spontaneous baroreflex assessment in healthy volunteers; leaves open validation for clinical populations.

Key Points

The aim is to compare spontaneous and drug-induced methods for assessing cardiac baroreflex sensitivity.
Compared spontaneous baroreflex method with drug-induced method in eight healthy volunteers.
Used continuous finger arterial pressure and ECG recordings to assess baroreflex slope during cardiac autonomic blockade.
Constructed sigmoidal curves from responses to phenylephrine and nitroprusside to compare with spontaneous slopes.
Spontaneous and drug-induced methods showed a high correlation (r = 0.96, P < 0.001).
Atropine eliminated the baroreflex slope, while propranolol and clonidine increased the average slope as they elevated resting pulse interval (r = 0.69 to 0.83).
The spontaneous baroreflex method is reliable and noninvasive for evaluating vagal cardiac baroreflex sensitivity.

Structured PICO

Does the spontaneous baroreflex method reliably assess baroreflex sensitivity compared to the drug-induced method in healthy volunteers?

Population

8 supine healthy volunteers

Intervention

Spontaneous baroreflex method (noninvasive assessment via continuous finger arterial pressure and electrocardiogram)

Comparator

Drug-induced method (bolus injections of phenylephrine and nitroprusside)

Outcome

Correlation of mean baroreflex slopes between the spontaneous and drug-induced methodssurrogate

The spontaneous baroreflex method provides a reliable, noninvasive alternative to drug-induced methods for assessing human vagal cardiac baroreflex sensitivity.

Cite This Study

Parlow et al. (1995) studied this question.

synapsesocial.com/papers/6a128d33c031bb6829a6db9f https://doi.org/10.1161/01.hyp.25.5.1058

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Spontaneous Cardiac Baroreflex in Humans

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Spontaneous Cardiac Baroreflex in Humans

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

Also Consider