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Changes of ECG in the Minesweeper Crew after the Synchronous Magnetic Minesweeping Operations

Objective: To study the changes of ECG in the minesweeper crew after the synchronous magnetic minesweeping operations. Methods: Electrocardiograms were examined in 62 minesweeper crewmembers before and after the synchronous magnetic minesweeping operations , and the experimental parameters were statistically analyzed. Results: The Q T interval and the QRS wave group time in ECG lengthened and the amplitude of (R V5 +S V1 ) increased. Conclusion: The ECG parameters of the minesweeper crew were influenced to some extent by the magnetic minesweeping operations. Proper preventive measures should be taken.