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  • Title: [The value of P wave dispersion in the diagnostic of pulmonary heart disease in coal worker's pneumoconiosis].
    Author: Bao Y.
    Journal: Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi; 2011 Apr; 29(4):313-5. PubMed ID: 21941791.
    Abstract:
    OBJECTIVE: To determine the value of measuring P wave dispersion of ECG in the diagnosis of pulmonary heart disease in patients with coal worker's pneumoconiosis. METHODS: 50 patients with stage III and 185 patients with different stages of coal worker's pneumoconiosis were included in the study. Compare the P wave of ECG and investigate nine indexes of P-wave dispersion. RESULTS: The figure of ECG P wave dispersion was distinct, easy to measure and of high positive incidence. The positive incidence of indexes (P wave voltage > or = 0.22 mV, P wave axis > or = +80 degrees, P1 lead peak angle < or = 70 degrees, P wave elevation speed > or = 0.5 mm/s, PavL inversion, IPIV1 > or = 0.03 mms, Ta wave depressed > or = 0.05 mV, height of PV1 biphasic wave straight sharp corner > 0.07 mV) were 74.00%, 72.00%, 68.00%, 62.00%, 56.00%, 60.00%, 54.00%, 34.00% in 50 cases patients with stage III coal worker's pneumoconiosis, the discrepancy had statistical significance (P < 0.01). The above ECG P wave dispersion indexes was higher with coal worker pneumoconiosis stage, the discrepancy had statistical significance (P < 0.01). CONCLUSIONS: Adopt P wave dispersion as the index of measuring right atrial hypertrophy is beneficial to the early diagnosis of pulmonary heart disease in patients with coal worker's pneumoconiosis.
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