ABSTRACT
Objective To investigate the effect of high-flow nasal cannula oxygen therapy (HFNC) on the clinical efficacy and diaphragm function of patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD). Methods The patients with mild to moderate AECOPD (clinical classification Ⅰ-Ⅱ) admitted to Huxi Hospital Affiliated to Jining Medical College from January to October in 2018 were enrolled. The patients were divided into HFNC treatment group and routine oxygen therapy control group (each n = 37) by randomly number table method. The two groups were given bronchiectasis drugs, corticosteroids, expectorant, anti-infection treatment, at the same time, the HFNC treatment group was given HFNC with the initial flow rate of 40 L/min. The routine oxygen therapy control group was given low flow oxygen, and the initial flow rate was 3 L/min. General data such as gender, age, clinical grade, acute physiology and chronic health evaluationⅡ (APACHEⅡ) score were recorded. Bedside ultrasound was used to measure the diaphragmatic excursions during quiet breathing (DEq), diaphragmatic excursions during deep breathing (DEd), and diaphragmatic shallow fast breathing index (D-RSBI) before and 2, 24 and 48 hours after treatment in both groups and compared, meanwhile, arterial blood gas analysis was performed, and arterial partial pressure of oxygen (PaO2) and arterial partial pressure of carbon dioxide (PaCO2) were recorded. Results Two patients in the HFNC treatment group withdrew from the study because they could not tolerate HFNC, while other patients were enrolled in the analysis. There was no statistically significant difference in gender, age, proportion of AECOPDⅡ grade or APACHEⅡscore between the two groups, indicating that the general data of the two groups were comparable and balanced. There was no statistically significant difference in DEq, DEd, D-RSBI, PaO2 or PaCO2 before treatment between the two groups. After treatment, DEp in both groups was decreased gradually with time, it was decreased earlier in the HFNC treatment group, and it showed significant difference as compared with that before treatment at 2 hours after treatment (mm: 18.3±3.1 vs. 20.1±4.2, P < 0.01), and it was significantly lower than that in the routine oxygen therapy control group (mm: 18.3±3.1 vs. 20.3±3.7, P < 0.05); DEd was gradually increased in both groups, it was significantly increased in the HFNC treatment group, and it was significantly higher than that in the routine oxygen therapy control group at 24 hours and 48 hours after treatment (mm: 55.2±7.6 vs. 50.8±9.2 at 24 hours, 59.4±7.7 vs. 53.6±9.1 at 48 hours, both P < 0.05); D-RSBI was decreased gradually in both groups, it was decreased earlier and more significant in the HFNC treatment group, and it was significantly lower than that in routine oxygen therapy control group at 24 hours and 48 hours after treatment (times·min-1·mm-1: 0.41±0.13 vs. 0.51±0.20 at 24 hours, 0.31±0.12 vs. 0.43±0.17 at 48 hours, both P < 0.05). After treatment, there was no statistically significant difference in PaO2 or PaCO2 between the two groups. Conclusion HFNC can effectively relieve diaphragm fatigue in patients with mild to moderate AECOPD, but it had no effect on carbon dioxide retention.
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Objective To investigate the effects of β-blockers on cardiac protection and hemodynamic in patients with septic shock. Methods A prospective randomized controlled trial was conducted. Forty-one patients with septic shock in accordance with early goal directed treatment and met the target within 6 hours,and admitted to intensive care unit (ICU)of Affiliated Huxi Hospital of Jining Medical College from January 2012 to January 2014 were enrolled. The patients were divided into treatment group (n=21)and control group (n=20)by random number table. The patients in both groups were given the standard treatment,esmolol was giving to patients in treatment group in order to control the heart rate (HR)below 100 bpm within 2 hours,and the patients in control group only received standard treatment. The changes in hemodynamic parameters〔mean arterial pressure(MAP),central venous pressure(CVP), HR,cardiac index(CI),stroke volume index(SVI),systemic vascular resistance(SVRI),global end diastolic volume index(GEDVI)〕,biochemistry metabolic of tissue〔central venous oxygen saturation(ScvO2),lactic acid(Lac)〕,and cardiac markers 〔troponin I (cTnI)〕before and 12,24,48,72 hours after the treatment were recorded. Results①Before treatment,the hemodynamic parameters,tissue metabolism index and cTnI had no significant differences in both groups (all P>0.05).②The hemodynamic parameters after treatment in the control group showed no significant difference compared with that before treatment. HR and CI in the treatment group were gradually declined after treatment,SVRI and GEDVI were gradually increased. There were significant differences in HR,CI,SVRI,and GEDVI between treatment group and control group from 12 hours on〔HR(bpm):93±4 vs. 118±13,CI (L·min-1·m-2):3.3 ±0.8 vs. 4.5 ±0.6,SVRI (kPa·s·L-1·m-2):159.2 ±27.4 vs. 130.5 ±24.2,GEDVI(mL/m2):668 ±148 vs. 588 ±103,P0.05). The ScvO2 was not decreased in both groups.④Compared with before treatment,cTnI in the control group was gradually increased,peaked at 72 hours,and that in the treatment group was gradually increased,peaked at 24 hours and then gradually declined. Compared with control group,the cTnI (μg/L)in the treatment group was decreased significantly at 24,48,72 hours (1.15 ±0.57 vs. 1.74 ±0.77,0.93 ±0.52 vs. 2.15 ±1.23,0.52 ±0.36 vs. 2.39 ±1.17,all P<0.01). Conclusionsβ-blockers (esmolol) can improve cardiac function and myocardial compliance,reduce the myocardial injury in patients with sepsis shock. Although β-blockers can decrease cardiac output,it has no influence on the circulation function and tissue perfusion.
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Objective To explore the relationship between superior vena cava-jugular vein oxygen saturation-differential value (ScVO2-SjVO2) and injury severity and prognosis in patients suffered from severe traumatic brain injury,finding out the chnical value.Methods Forty-three patients with severe tranmatic brain injury were selected and divided into two groups according to Glasgow Coma Scale (GCS) score,19 cases were enrolled in GCS 3-5 scores group;24 cases in GCS 6-8 scores group;20 contemporaneous cases in control group had conscious and without traumatic brain injury.The changes of ScVO2-SjVO2 at 0,12,24,48 h after admission of ICU among the groups were observed.In addition according to the degree of change in ScVO2-SjVO2,12 cases were enrolled in ScVO2-SjVO2 ＜ 0.05 group;14 cases in ScVO2-SjVO2 0.05-0.15 group; 17 cases in ScVO2-SjVO2 ＞ 0.15 group.The GCS score and mortality rate in patients after brain injury 28 d among groups were observed.Results GCS 3-5 scores group compared with control group,ScVO2-SjVO2 reduced significantly at 0,12,24,48 h after admission of ICU (-0.071 ±0.032 vs.0.093 ±0.049,-0.097 ±0.052 vs.0.081 ±0.052,-0.035 ±0.031 vs.0.089 ± 0.059,0.036 ± 0.033 vs.0.081 ± 0.064),there were significant differences (P ＜ 0.01).GCS 6-8 scores group compared with control group,ScVO2-SjVO2 dramatically increased at 0,12,24 h after admission of ICU(0.173 ± 0.043,0.158 ± 0.067,0.123 ± 0.073),there were significant differences (P ＜ 0.01 or ＜ 0.05).ScVO2-SjVO2 ＜0.05 group and ScVO2-SjVO2 ＞0.15 group compared with ScVO2-SjVO2 0.05-0.15group,the mortality rate significantly increased,the mortality rate were 8/12,4/17,1/14,respectively,there were significant differences (P ＜0.01).ScVO2-SjVO2 ＜0.05 group and ScVO2-SjVO2 ＞0.15 group compared with ScVO2-SjVO2 0.05-0.15 group,GCS score decreased significantly[(4.17 ± 1.34),(5.88 ±1.35) scores vs.(6.86 ± 1.35) scores],and there was significant difference (P ＜0.01 or ＜0.05).Conclusions When ScVO2-SjVO2 ＜ 0.05,the difference is negatively related to the deg~e of brain injury.When ScVO2-SjVO2 ＞0.15,the difference is positively related to the degree of brain injury;ScVO2-SjVO2 can assess injury severity objectively in patients who suffered from severe traumatic brain injury,and it also expresses the rate of cerebral oxygen metabolism.It can provide a basis for treatment accurately and timely,and judgment prognosis.