The Lazarus phenomenon is defined as delayed ROSC,or ROSC after failure of CPR and cessation of all the emergency medical care,including the cessation of chest compression,mechanical ventilation,and venous fluid resuscitation.It was first reported in 1982 and 53 cases of Lazarus phenomenon have been reported in the medical literature so far.Even though Lazarus phenomenon is rare and the pathophysiological mechanisms are poorly understood,several possible mechanisms are still proposed,which could be rational to explain this phenomenon,such as auto-PEEP,hyperkalemia,alkalosis,delayed action of drugs,etc.In most cases,it was reported that ROSC occurred within 10 minutes after cessation of medical effort.Therefore,before the announcement of death of patient,it is mandatory to monitor those patients for at least 10 minutes after the cessation of CPR.However,more explicit studies seem to be necessary to gain a better understanding of this phenomenon.

Objective To observe the effect of PaCO_2 modulating during operation on post-operative cognitive function of patients undergoing off-pump coronary artery(OPCAB). Methods Thirty patients undergoing OPCAB were randomly divided into traditional group (G_ 1 , n=15) and modulated group (G_ 2 , n=15). During operation, PaCO_ 2 in G_ 1 maintained 35 mmHg to 39 mmHg with relatively fixed ventilation parameters setting, and PaCO_ 2 in G_ 2 ranged from 40 mmHg to 45 mmHg by adjusting ventilation parameters. Continuous cardiac output index (CCI), SvO_ 2 , regional cerebral O_ 2 saturation (rSO_ 2 ) and PaCO_ 2 were recorded before distal anastomosis(T_ 1 ), at 5 min of the first distal vessel anastomosis(T_ 2 ), second distal vessel anastomosis(T_ 3 ) and third distal vessel anastomosis(T_ 4 ), and 20 min after the completion of coronary artery anastomoses. HDS-R and ADL were used to examine the patients' cognitive function. Results There were no significant differences in pre- and post-operative HDS-R and pre-operative ADL scores between groups. The score of post-HDS-R in G_ 1 was obviously lower than that of pre-HDS-R (P

AlM: To observe the influence on the incidence of diffuse lamellar keratitis ( DLK ) after laser in situ keratomileusis ( LASlK ) whether or not wearing sterile gloves with talc during operation, and to confirm the role of residual talc in the occurrence of DLK.
METHODS: Totally 563 patients ( 1 126 eyes ) accepted operation with the method of surgical hand antisepsis only were set as the experimental group, while 592 patients ( 1 184 eyes ) with the method of surgical hand antisepsis and sterile gloves as the control group. Each patient was rechecked to observe the occurrence of DLK on the first day and the seventh day after the operation. Then the data of DLK were statistically analyzed byχ2 test and rank sum test.
RESULTS:On the first postoperative day, the incidence of DLK was 7. 4% (83 eyes) in experimental group and 12. 2% (144 eyes) in control group. ln the former group, stage Ⅰ of DLK accounted for 4. 6% (52 eyes) and stageⅡ for 2. 8% (31 eyes);while in the latter, stage l did for 7. 7% (91 eyes) and stageⅡfor 4. 5% (53 eyes). On the seventh day, all DLK were cured. The other 2 cases ( 3 eyes) occurred in stage Ⅳ DLK ( the first time recheck was on the eighth day after operation and fluorometholone ophthalmic solution was not used on time ) . The incidence and the severity were both significant lower in the experimental group than in the control (both P<0. 01).
CONCLUSlON: Talc is one of the most important factors resulting in DLK after LASlK. The method of surgical hand antisepsis without wearing gloves could avoid the stimulation of talc and reduce the incidence of DLK obviously.

Animals ; Disease Reservoirs ; microbiology ; Genome, Bacterial ; Geography ; Marmota ; microbiology ; Plague ; epidemiology ; microbiology ; Polymorphism, Genetic ; Yersinia pestis ; genetics

OBJECTIVE:To provide electronic drug directions for hospital staffs.METHODS:Based on the military hospital information system,a system that can provide electronic drug directions was developed by establishing the database,collecting and sorting drug directions.RESULTS&CONCLUSION:This system is characterized by friend user interface,convenient input,quick inquiry,easy maintenance and widespread service,which can help hospital staffs to get the drug di?rections quickly and exactly and hence to better serve patients.

Communicable Diseases, Emerging ; genetics ; Genomics ; Humans

Angiogenesis Inhibitors ; therapeutic use ; Endostatins ; therapeutic use ; Histiocytic Sarcoma ; drug therapy ; Humans ; Male ; Middle Aged ; Recombinant Proteins ; therapeutic use

Objective To explore the relationship between administration of different doses of colloid before general anesthesia induction and general anesthesia-induced hypotension. Methods Fifty patients for selective gastrointestinal operations were randomly divided into 5 groups according to the volume of colloid administered 30 min before general anesthesia induction: 0 mL/kg group (control group), 4 mL/kg group, 8 mL/kg group, 12 mL/kg group and 15 mL/kg group. To replace the deficit of hypovolemia before operation, crystalloid was given to each patient. Anesthesia was induced with propofol 25 min after infusion. Hemodynamic parameters were compared before and after anesthesia induction among groups. Results The changes in diastolic blood pressure and mean arterial blood pressure were related to colloid supplementation volume (r=-0.657, P<0.01). There were significant differences between control group and 8 mL/kg group, 12 mL/kg group and 15 mL/kg group (P<0.05), while there was no significant difference among 8 mL/kg group, 12 mL/kg group and 15 mL/kg group. Conclusion Administration of colloid before general anesthesia induction attenuates the severity of general anesthesia-induced hypotension, especially when the dose of colloid is over 8 mL/kg.

As one of the cornerstones of modern cardiopulmonary resuscitation (CPR), ventilation received controversy and challenges in the past two decades. From 2000 to 2015, the changes in CPR guidelines of American Heart Association (AHA) showed that the position of ventilation declined gradually as compared to chest compressions. Chest compressions only CPR has been strongly advocated in recent years, especially in witnessed cardiogenic cardiac arrest (CA). Passive oxygenation and cardiocerebral resuscitation (CCR) also showed good effect in the early stage of cardiogenic CA. However, clinical validation in a larger context is still needed. An impedance threshold device (ITD) transiently blocks air from entering the lungs during recoil, decreases the intrathoracic pressure, facilitates venous return to the chest and increases coronary blood flow. However, the relevant research findings are not consistent, and the guidelines do not recommend routine use of ITD. Positive-pressure ventilation, which can increases intrathoracic pressure, affects the coronary perfusion pressure (CPP) and cerebral perfusion, is thought to be not only useless, but also has adverse effects within the first few minutes of CPR. This view is accepted by many scholars, however, ventilation is essential in late-start CPR, prolonged CPR and non-cardiogenic CA. Mechanical ventilation, especially special ventilation modes for CPR showed some prospects. Positive-pressure ventilation remains the gold standard in CPR in clinical practice at present. It was shown by existing research that hyperventilation significantly reduce the success rate of resuscitation, thus a consensus had been reached about avoiding hyperventilation. Currently, the number of studies on ventilation during CPR is very limited, and many of the conclusions are not consistent among studies. Therefore, more high-quality studies are needed in future to further clarify the application of ventilation during CPR.

Adult ; Female ; Humans ; Magnetic Resonance Imaging ; Neuroma, Acoustic ; pathology ; surgery