Cold provocation test results from a 1985 survey of hard-rock miners in Ontario.

Pl, Pelmear; Roos, J. Micah; Leong, Danielle; Wong, Luis

doi:10.5271/sjweh.2030

Cited by 30 publications

(6 citation statements)

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“…As already noted, these requirements severely restrict the number of studies that qualify for the analysis. There are only nine studies involving two types of power tools that, together, fulfil the requirements and from which sufficient epidemiologic data and acceleration spectra can be derived to lend credibility to the analysis 2,4,[42][43][44][45][46][47] . The epidemiologic data from these studies are summarized in Table 1, and involved either miners operating rock drills or forest workers harvesting trees with chain saws.…”

Section: Upper Cut-off Frequency For the Primary Frequency Rangementioning

confidence: 99%

Frequency Weighting for Vibration-induced White Finger Compatible with Exposure-response Models

Brammer

Pitts

2012

Ind Health

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An analysis has been performed to derive a frequency weighting for the development of vibration-induced white finger (VWF). It employs a model to compare health risks for pairs of population groups that are selected to have similar health outcomes from operating power tools or machines with markedly different acceleration spectra (rock drills, chain saws, pavement breakers and motorcycles). The model defines the Relative Risk, RR f(trial) , which is constructed from the ratio of daily exposures and includes a trial frequency weighting that is applied to the acceleration spectra. The trial frequency weighting consists of a frequency-independent primary frequency range, and subordinate frequency ranges in which the response to vibration diminishes, with cutoff frequencies that are changed to influence the magnitude of RR f(trial) . The frequency weighting so derived when RR f(trial) = 1 is similar to those obtained by other methods (W hf , W hT ). It consists of a frequency independent range from about 25 Hz to 500 Hz (-3 dB frequencies), with an amplitude cut-off rate of 12 dB/octave below 25 Hz and above 500 Hz. The range is compatible with studies of vasoconstriction in persons with VWF. The results provide further evidence that the ISO frequency weighting may be inappropriate for assessing the risk of developing VWF.

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Section: Upper Cut-off Frequency For the Primary Frequency Rangementioning

confidence: 99%

Frequency Weighting for Vibration-induced White Finger Compatible with Exposure-response Models

Brammer

Pitts

2012

Ind Health

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“…In the investigation undertaken by Suizu and Harada, the ISO 14835-1 test method with measurement of FST by thermistors was found repeatable 20) . The reported sensitivity and specificity from several studies involving thermometry 10,[21][22][23][24][25][26][27][28][29] and thermography [29][30][31] with a cold water immersion test in distinguishing VWF patients from controls are presented in Table 2, which indicates that the diagnostic ability of FST measurements with cold provocation is inconsistent. In the study of Coughlin et al, the researchers investigated the potential of cold provocation thermography with a water temperature of 5°C for 1 min as an objective test to diagnose the digital vasospasm in HAVS patients 31) .…”

Section: Thermometry and Thermographymentioning

confidence: 99%

Review of Different Quantification Methods for the Diagnosis of Digital Vascular Abnormalities in Hand‐arm Vibration Syndrome

Mahbub

Harada

2011

Journal of Occupational Health

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This study was undertaken to review the diagnostic ability of different quantification methods in the assessment of vibration-induced white finger (VWF), the typical clinical manifestation of vascular injuries in Hand-arm Vibration Syndrome (HAVS). Methods: A literature search of original and major review articles related to the quantification techniques for diagnosing vascular injuries in HAVS was performed. Relevant data from the publications were extracted and included in this study for reporting and discussion. Results: Few studies were available to substantiate the diagnostic techniques using the nail press test and nailfold capillaroscopy. Also, few studies were found to conclusively demonstrate the diagnostic ability using thermometry and thermography incorporated with cold provocation. Some recent reports raised the question regarding the diagnostic ability of finger plethysmography; but by virtue of its comparable assessment parameters and better diagnostic performance, plethysmography appears to be a suitable diagnostic method. In noninvasive quantification of vascular injuries, diagnostic techniques like laser Doppler perfusion imaging and nailfold capillaroscopy require further evaluation in future studies. Conclusions: For a reliable objective diagnosis of VWF at present, quantification of vascular responses using a test battery including established methods like thermometry or thermography and strain gauge plethysmography appears to be useful. (J Occup Health 2011; 53: 241-249)

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“…Other investigators have obtained measures of the temperature during reactive hyperaemia following removal of a tourniquet during cold provocation ( [3,7,26] , Fig. 5).…”

Section: Absolute Temperaturesmentioning

confidence: 99%

“…Measurement methods reported in the literature dier widely, and even when the same methods have been used, dierent sensitivities and speci®cities to symptoms of VWF have resulted. For example, whole-hand immersion in water at 10°C for 10 min has yielded sensitivities between 20% and 91% with speci®cities between 37% and 100% [8,15,23,25,26,30].…”

Section: Introductionmentioning

confidence: 99%

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Interpretation of the finger skin temperature response to cold provocation

Lindsell¹,

Griffin²

2001

Int Arch Occup Environ Health

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The method chosen to interpret the FST response to cold provocation affects the ability of the test to detect an abnormal cold response. The area above the response profile, the percentage of initial temperature at the fifth minute of recovery and the maximum temperature achieved during a 10-min recovery period appear to be the most suitable measures for monitoring vascular function in workers exposed to hand-transmitted vibration. It is suggested that the FST response to cold provocation should be interpreted with respect to the state of initial blood flow.

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Cold provocation test results from a 1985 survey of hard-rock miners in Ontario.

Abstract: Cold provocation test results from a 1985 survey of hard-rock miners in Ontario.

Cited by 30 publications

References 0 publications

Frequency Weighting for Vibration-induced White Finger Compatible with Exposure-response Models

Frequency Weighting for Vibration-induced White Finger Compatible with Exposure-response Models

Review of Different Quantification Methods for the Diagnosis of Digital Vascular Abnormalities in Hand‐arm Vibration Syndrome

Interpretation of the finger skin temperature response to cold provocation

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