：Objective To explore theconsistency between cardiac monitor and mercury sphygmomanometer for noninvasive bloodpressure ( BP) measurements in patients with atrial fibrillation, which may provideevidence for appropriate device to be applied clinically to patients with arrhythmia.Methods A cohort of 180 hospitalized patients with atrial fibrillation and a total of 160hospitalized patients with regular heart rhythm were randomly recruited. The BP of everysubject was measured with both a mercury device and a cardiac monitor using the same arm.t test was used to compare the BP parameters obtained with the two devices and atwo-tailed P < 0. 05 was considered to be statistically significant. Results In 180patients with atrial fibrillation, the mean systolic BP and diastolic BP measured by themercury sphygmomanometer were (126 ± 22) mm Hg and (75 ±13) mm Hg respectively, whereasthe cardiac monitor measured systolic BP as(134±25) mm Hg and diastolic BP as (69 ±15)mm Hg. There was statistically significant difference with regard to BP values between thetwo devices (for systolic BP, t = 3. 223 0,P =0. 001 4; for diastolic BP, t =4. 055 5 ,P =0.000 1). However, in 160 patients with regular cardiac rhythm, no significant differencewas found for the BP data obtained with the two devices [for systolic BP, (128 ±24) vs(129 ±25), t =0. 365 0,P =0. 715 4; for diastolic BP, (78 ±11) vs (76 ±12) , t = l.5541, P =0. 121 2]. Conclusions Atrial fibrillation may exert adverse effect on theaccuracy of BP measurements taken using cardiac monitor and in patients with atrialfibrillation. Mercury sphygmomanometer is preferable for BP measurement.
By measuring the magnetic field around the rail,we can know the current intensity in the rail indirectly,and then determine whether there is a fault.This paper presents the simulation results on the magnetic field generated by rail current,finds the location of maximum magnetic field intensity around the rail.At the same time we use different sizes of silicon steel plates to enhance the magnetic field,and contrast the effect of enhancement,determine the best solution of enhancement.
【Objective】To investigate the protective effects of Shenfu injection on infarction size and cardiac function in patients with acute myocardial infarction(AMI).【Methods】Fifty seven patients with acute anterior myocardial infarction were randomly divided into Shenfu injection treatment group(n=30) and control group(n=27).the conventional 12 leads electrocardiogram(ECG) was recorded on admission and 7,14,21 days after the infarction size was scored by the QRS scoring system proposed by Wagner.The cardiac systolic and diastolic functions were assessed by ultra-cardiograph checking on 21 days after the treatment.The serum tumor necrosis factor-α(TNF-α),C-reactive protein(CRP) were determined before and after treatment in all patients.【Results】Compared with control group,the QRS scores were lower on 14 and 21 days after the treatment,the infarction sizes were smaller,the left ventricular ejection fractions(LVEF) were higher,the TNF-α and CRP levels were significantly lower in the treatment group.【Conclusion】Shenfu injection is effective on preventing infarction extension,protecting ischemic myocardial injury and promoting recovery of cardiac function in patients with AMI.
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