What question did this study set out to answer?

To evaluate whether mathematical analyses of spontaneous blood pressure and heart rate variability provide clinically useful noninvasive assessments of diabetic cardiovascular autonomic neuropathy.

March 1, 1999Diabetes Care

Noninvasive exploration of cardiac autonomic neuropathy. Four reliable methods for diabetes?

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Why the study?

Do mathematical analyses of spontaneous blood pressure and heart rate variabilities correlate with cardiac autonomic dysfunction in diabetic patients?

Population

21 subjects, comprising 10 healthy volunteers and 11 diabetic patients selected for nonsymptomatic…

Comparison

Mathematical analyses of spontaneous blood… vs Healthy volunteers.

Design

Cross-sectional

Authors

MDMichel DucherUniversité Claude Bernard Lyon 1 CCCatherine CeruttiUniversité Claude Bernard Lyon 1 MGMarie-Paule GustinUniversité Claude Bernard Lyon 1

Discussion

Member takes

Implication

May aid noninvasive autonomic neuropathy detection in diabetes; leaves open prospective validation of clinical utility.

Key Points

To evaluate whether mathematical analyses of spontaneous blood pressure and heart rate variability provide clinically useful noninvasive assessments of diabetic cardiovascular autonomic neuropathy.
Assessed 11 diabetic patients selected for asymptomatic orthostatic hypotension alongside 10 healthy control volunteers.
Recorded continuous beat-to-beat blood pressure and heart rate for 1 hour in supine participants using a Finapres device.
Scored autonomic impairment using Ewing's methodology and evaluated variability indices and baroreflex sensitivity through standard deviation, fractal dimension, spectral power, cross-spectral sequence, and Z analyses.
Diabetic patients showed cardiovascular autonomic dysfunction with Ewing's scores ranging from 1 to 4.5 and consistently lower global variability indices compared to healthy controls.
Heart rate standard deviation, heart rate fractal dimension, and spectral power of both systolic blood pressure and heart rate significantly correlated with Ewing's scores.
Cardiac baroreflex sensitivity was reduced in diabetic subjects according to Z and spectral analyses, with sequence analysis showing a decreased number of baroreflex sequences that correlated with Ewing's scores.

Structured PICO

Do mathematical analyses of spontaneous blood pressure and heart rate variabilities correlate with cardiac autonomic dysfunction in diabetic patients?

Population

21 subjects, comprising 10 healthy volunteers and 11 diabetic patients selected for nonsymptomatic orthostatic hypotension.

Intervention

Mathematical analyses of spontaneous blood pressure (BP) and heart rate (HR) variabilities (standard deviation, fractal dimension, spectral power, cross-spectral sequences, and Z analyses) during a 1-hour supine recording.

Comparator

Healthy volunteers.

Outcome

Correlation of BP and HR variability indices with Ewing's score for cardiac autonomic dysfunction.surrogate

Mathematical analyses of spontaneous heart rate and blood pressure variability can reliably detect impaired cardiac baroreflex and incipient autonomic neuropathy in diabetic patients.

Cite This Study

Ducher et al. (1999) studied this question.

synapsesocial.com/papers/6a8bf62fde5ec4e001e3df67 https://doi.org/10.2337/diacare.22.3.388

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Noninvasive exploration of cardiac autonomic neuropathy. Four reliable methods for diabetes?

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Noninvasive exploration of cardiac autonomic neuropathy. Four reliable methods for diabetes?

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

Also Consider