Hemodynamic response of small arteries to topical lignocaine

Blair, W. Frank; Greene, Ernest R.; Eldridge, M W; Cipoletti, Robert D.

doi:10.1016/0022-4804(81)90032-9

Cited by 5 publications

(4 citation statements)

References 7 publications

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“…Data analysis for derivation of V,, was completed by computer averaging of I-s V,, signals. In previous studies V,, was obtained directly from the PUDVM instrument, by electronically filtering the raw phasic signal (4,5,11,13). Filtering of a phasic signal may result in a phasic signal of much less amplitude, but still a signal that must be graphed and manually averaged.…”

Section: Continuous -mentioning

confidence: 99%

“…Data analysis for plotting velocity profiles used computer averages of I-s sequential spatial velocities determined with a sample volume corresponding with a 0.3-mm width setting. In previous studies the peaks, and not averages, of sequential velocities were plotted against incremental range control advances (4,5,11,13). Theoretically, plotting peaks or averages for velocity profile generation should result in similar parabolic x-axis intercepts and thus lumen diameters.…”

Section: Continuous -mentioning

confidence: 99%

“…The final point was initially defined as the point after which the slope was no longer negative or downward. When these points were fitted, the calculated flows were relatively high (4,5,11). Reference to Fig.…”

Section: Continuous -mentioning

confidence: 99%

“…Physiologic saline at room temperature was placed in the wound to provide an ultrasonic medium. Preoperative blood flow measurements were completed with a 20-MHz pulsed Doppler velocity meter (PUDVM), which is an established instrument and method for this experimental design (4,5,10). Using a stereotaxic apparatus to maintain a Doppler angle of 70°, measurements were taken between the profundus femoris and superficial epigastric arteries.…”

mentioning

confidence: 99%

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Interrupted and continuous microarteriorrhaphy techniques: A hemodynamic comparison

Blair

Pedersen

Joos

et al. 1984

Journal Orthopaedic Research

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The purpose of this study was to compare interrupted and continuous suturing techniques in laboratory microarteriorrhaphy. The comparison was based on rat femoral artery hemodynamic variables, including blood velocities, lumen diameters, and calculated blood flow. These variables were calculated by an offline computer from Doppler frequency shifts that were measured by a 20-MHz pulsed ultrasonic Doppler velocity meter. No statistical difference was noted postoperatively between the interrupted and continuous techniques relative to any hemodynamic variable. Average blood flow after the interrupted (n = 12) and continuous (n = 12) techniques was 6.59 +/- 1.12 and 6.74 +/- 1.20 ml/min, respectively. The two microarteriorrhaphy techniques result in equal postoperative vessel hemodynamics in a laboratory model.

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Section: Continuous -mentioning

confidence: 99%

Section: Continuous -mentioning

confidence: 99%

Section: Continuous -mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Interrupted and continuous microarteriorrhaphy techniques: A hemodynamic comparison

Blair

Pedersen

Joos

et al. 1984

Journal Orthopaedic Research

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Pulsed ultrasound doppler velocimetry in the assessment of microvascular hemodynamics

Blair

Brown

Greene

1988

Journal Orthopaedic Research

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Pulsed ultrasonic Doppler velocimetry (20 MHz) (PUDVM) has evolved considerably in the last 10 years. Engineering development has resulted in a computer-controlled vessel-scanning instrument whose backscattered frequency shift spectra are analyzed using fast Fourier transforms (FFT). Benchtop and theoretic studies indicate accurate (error less than 5%) velocity and volumetric flow rate measurements in vessels with a lumen diameter as small as 1.2 mm. Clinical application of the PUDVM has provided transcutaneous measurements of blood flow variables in normal human digital arteries. Experimental application to arteries 1.0-1.5 mm has provided information on the hemodynamic effects of topical vasodilators, standard microarteriorrhaphy, variations in microvascular technique, interpositional grafts, and early wound repair. With improving computer capabilities and technical modifications, the PUDVM will be an increasingly important tool in clinical and experimental microsurgery.

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Peripheral hemodynamic stability during prolonged anesthesia in the rat

et al. 1986

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The present study tests the hypothesis that peripheral hemodynamics in the rat femoral artery remain relatively stable during 3 hours of general anesthesia. Hemodynamic variables (pulse period, maximal centerline velocity, lumen diameter, and mean volumetric flow) were measured by the 20 MHz-pulsed ultrasonic Doppler velocimeter method at 30-minute intervals. The hemodynamic variables were not statistically different during the duration of the study. The mean values were pulse period 160 +/- 2 msec, maximal centerline velocity 37.0 +/- 1.9 cm/sec, lumen diameter 0.94 +/- 0.03 mm, and mean volumetric flow 1.92 +/- 0.19 cc/min.

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Hemodynamic response of small arteries to topical lignocaine

Cited by 5 publications

References 7 publications

Interrupted and continuous microarteriorrhaphy techniques: A hemodynamic comparison

Interrupted and continuous microarteriorrhaphy techniques: A hemodynamic comparison

Pulsed ultrasound doppler velocimetry in the assessment of microvascular hemodynamics

Peripheral hemodynamic stability during prolonged anesthesia in the rat

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