Objective To analyze the therapeutic effect of noninvasive mechanical ventilation in chronic obstructive pulmonary disease (COPD) patients with respiratory failure.Methods Sixty patients with COPD respiratory failure were randomly divided into two groups.30 cases in the conventional treatment group used conventional comprehensive therapy.30 cases in the nonfinvasive mechanical ventilation group were given noninvasive mechanical ventilation based on conventional treatment.The total effective rate,time to correct the abnormal breathing,hospitalization time were compared between the two groups.Before and after treatment,the arterial blood gas analysis indicators and heart rate,respiratory rate,probability,mortality for ventilator ventilation were compared in the two groups.Results The total effective rate of the noninvasive mechanical ventilation group was 96.67％,which was higher than 73.33％ of the conventional treatment group(x2 =6.405,P ＜ 0.05).The time to correct the abnormal breathing,hospitalization time of noninvasive mechanical ventilation group were (5.51 ± 1.41) d,(9.51 ± 2.13) d,respectively,which were shorter than (9.39 ± 2.56) d,(12.99 ± 3.57) d of the conventional treatment group (t =8.223,9.633,all P ＜ 0.05).Before treatment,the arterial blood gas analysis parameters and heart rate had no statistically significant differences between the two groups (all P ＞ 0.05).After treatment,the frequency of PaCO2,PaO2,heart rate and respiratory rate in the conventional treatment group were (60.45 ± 3.94)mmHg,(60.24 ± 4.12)mmHg,(92.58 ± 0.61)times/min,(22.45 ± 3.14)times/min,respectively,which in the noninvasive mechanical ventilation group were (52.24 ± 1.23) mmHg,(76.24 ± 5.26) mmHg,(83.92 ± 0.62) times/min,(17.26 ± 2.23) times/min,respectively,the differences between the two groups were statistically significant(t =5.133,3.734,5.166,6.360,all P ＜ 0.05).The invasive rate of invasive ventilator and mortality of noninvasive mechanical ventilation group were 3.33％ and 0.00％,respectively,which were lower than 20.00％,13.33％ of the conventional treatment group (x2 =7.214,6.247,all P ＜ 0.05).Conclusion Noninvasive mechanical ventilation is effective in treatment of patients with COPD respiratory failure,which can effectively improve the indicators of arterial blood gas and heart rate and respiratory rate,improve the prognosis of patients,improve the ventilation probability of invasive ventilator.

Objective To study the effect of systemic intervention on strengthen nurses’ capability of identifying events in ECG monitoring, so as to make sure the safety of patients.Methods Set up ECG monitoring quality management group, formulated alarming standard values of alarm, set sequence, unit’s default value etc.And all the nurses received the training of different level.Meanwhile, the capability of early-warning in nurses of different seniorities were observed and assessed, and data was statistically analyzed.Results The capability of early-warning in nurses of different seniorities were all improved, alarming settings time of nurses with 1-4 nursing ages was shortened from 105 s to 42 s, that of nurses with 5-9 nursing ages was shortened from 87 s to 31 s, that of nurses with more than 10 nursing ages was shortened from 68 s to 25 s.Alarm response time of nurses with 1-4 nursing ages was shortened from 92 s to 57 s, that of nurses with 5-9 nursing ages was shortened from 54 s to 42 s, and that of nurses with more than 10 nursing ages was shortened from 30 s to 25 s. Conclusions The systematic intervention can effectively improve alarm setting correctly and nurse’ s capability of early-warning, and ensure quality of critical patients’ care.