Key result
High-temperature exposure in steel furnace workers altered the orthostatic systolic blood pressure fall after 2 hours of work compared to controls.
Why the study?
Excessively high workplace temperatures may alter autonomic activity and increase cardiovascular risk in steel plant workers, prompting evaluation of cardiovascular autonomic function tests in furnace workers.
Does occupational exposure to high temperature alter cardiovascular sympathetic autonomic function test responses in steel plant furnace workers compared to healthy controls?
Case-Control (n=100)
Does occupational exposure to high temperature alter cardiovascular sympathetic autonomic function test responses in steel plant furnace workers compared to healthy controls?
Occupational exposure to excessive heat in steel plant furnace workers induces acute thermal stress, elevated heart rate, and altered orthostatic blood pressure regulation, indicating sympathetic autonomic dysfunction.
Answers are grounded in this paper and cite their sources.
Heat-exposed steel workers showed altered orthostatic BP responses; leaves open whether autonomic monitoring or interventions are warranted before prospective confirmation.
Background: The high temperature in the working environment could be one of the risk factors for cardiovascular diseases in steel plant workers. The excessive high temperature at the working place leads to altered autonomic activity and is related to more cardiovascular risk. Aims and Objectives: The effect of high temperature on cardiovascular autonomic function tests in steel plant furnace worker. Material and Method: This was a case-control study for which 50 steel plant furnace workers and 50 controls were selected. The cardiovascular sympathetic function status in worker and control were analyzed by three tests: (i) Blood pressure (BP) response to sustained isometric handgrip test, (ii) BP response to the cold pressor test, and (iii) BP response to standing from a supine position (orthostasis). Statistical analysis was done by using an independent t -test. Results: Diastolic BP (DBP) response to sustained isometric handgrip and systolic BP (SBP) and DBP response to the cold pressor test showed that the increase BP in workers were more than controls but the difference was not statistically significant ( P > 0.05). SBP response to standing from the supine position showed statistically significant ( P < 0.001) greater fall in steel plant workers. Conclusion: The sympathetic autonomic dysfunction was seen in steel furnace workers in response to environmental stressor–excessive heat.
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Rathod et al. (2021) conducted a case-control in Cardiovascular autonomic function under occupational heat exposure (n=100). Occupational exposure to high temperature (steel plant furnace environment, 55±0.98 °C after 2 hours) vs. Healthy age- and BMI-matched controls from the general population working in normal temperatures (35±1.02 °C after 2 hours) was evaluated on Systolic blood pressure (SBP) response (fall in mmHg) to standing from a supine position (orthostatic test) after 2 hours of work (p=<0.001). High-temperature exposure in steel furnace workers altered the orthostatic systolic blood pressure fall after 2 hours of work compared to controls.
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