What question did this study set out to answer?

To determine the immediate arterial pressure and sinus node responses to brief, single or repetitive carotid baroreceptor stimulation in humans.

December 1, 1979The Journal of PhysiologyOpen Access

Arterial pressure and pulse interval responses to repetitive carotid baroreceptor stimuli in man.

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Why the study?

Does repetitive carotid baroreceptor stimulation via neck suction alter arterial pressure and pulse interval in healthy young men?

Population

8 healthy young men

Comparison

Brief, moderate, single or repetitive, R wave… vs Control levels (baseline)

Design

Other

Follow-up

10 seconds

Authors

ABA L Baskerville DEDwain L. EckbergGeneral Cardiology MTMaxwell ThompsonUniversity of Alabama at Birmingham

Discussion

Member takes

Implication

May guide device-based hypertension research; leaves open translation from healthy physiology to patients.

Key Points

To determine the immediate arterial pressure and sinus node responses to brief, single or repetitive carotid baroreceptor stimulation in humans.
Studied 8 healthy young men receiving brief (0.6 s, 30 mmHg), R-wave coupled single or repetitive (2, 3, or 5) neck suction stimuli during held expiration.
Continuously recorded brachial arterial pressure and pulse interval alterations across a 10-second window following stimulus onset.
Systolic arterial pressure decreased significantly from baseline within the first second following stimulation, with the duration of pressure reduction proportional to stimulus count.
Sinus node response to a single stimulus was biphasic, characterized by immediate inhibition followed by prolonged facilitation lasting roughly 7 seconds, with cumulative inhibition scaling linearly with stimulus number.
Repetitive trains of five stimuli elicited peak sinus node inhibition at approximately 1.5 seconds post-onset before reaching a new steady-state level during stimulation.

Structured PICO

Does repetitive carotid baroreceptor stimulation via neck suction alter arterial pressure and pulse interval in healthy young men?

Population

8 healthy young men

Intervention

Brief (0.6 sec), moderate (30 mmHg), single or repetitive (2, 3 or 5), R wave coupled neck suction during held expiration

Comparator

Control levels (baseline)

Outcome

Brachial arterial pressure and pulse interval changes measured for 10 secondssurrogate

Carotid baroreceptor stimulation via neck suction rapidly reduces systolic arterial pressure and produces a biphasic sinus node response in healthy men.

Cite This Study

Baskerville et al. (1979) studied this question.

synapsesocial.com/papers/6a7ea686b71e981453627b63 https://doi.org/10.1113/jphysiol.1979.sp013027

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Arterial pressure and pulse interval responses to repetitive carotid baroreceptor stimuli in man.

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Arterial pressure and pulse interval responses to repetitive carotid baroreceptor stimuli in man.

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

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