1.Multiplex PCR Detection of Waterborne Intestinal Protozoa; Microsporidia, Cyclospora, and Cryptosporidium.
Seung Hyun LEE ; Migyo JOUNG ; Sejoung YOON ; Kyoungjin CHOI ; Woo Yoon PARK ; Jae Ran YU
The Korean Journal of Parasitology 2010;48(4):297-301
Recently, emerging waterborne protozoa, such as microsporidia, Cyclospora, and Cryptosporidium, have become a challenge to human health worldwide. Rapid, simple, and economical detection methods for these major waterborne protozoa in environmental and clinical samples are necessary to control infection and improve public health. In the present study, we developed a multiplex PCR test that is able to detect all these 3 major waterborne protozoa at the same time. Detection limits of the multiplex PCR method ranged from 101 to 102 oocysts or spores. The primers for microsporidia or Cryptosporidium used in this study can detect both Enterocytozoon bieneusi and Encephalitozoon intestinalis, or both Cryptosporidium hominis and Cryptosporidium parvum, respectively. Restriction enzyme digestion of PCR products with BsaBI or BsiEI makes it possible to distinguish the 2 species of microsporidia or Cryptosporidium, respectively. This simple, rapid, and cost-effective multiplex PCR method will be useful for detecting outbreaks or sporadic cases of waterborne protozoa infections.
Cryptosporidium/*isolation & purification
;
Cyclospora/*isolation & purification
;
DNA Primers/genetics
;
DNA Restriction Enzymes/metabolism
;
DNA, Protozoan/genetics/metabolism
;
Humans
;
Microsporidia/*isolation & purification
;
Parasitology/*methods
;
Polymerase Chain Reaction/*methods
;
Polymorphism, Restriction Fragment Length
;
Sensitivity and Specificity
;
Water/*parasitology
2.Clinical significance of acute care surgery system as a part of hospital medical emergency team for hospitalized patients
Kyoung Won YOON ; Kyoungjin CHOI ; Keesang YOO ; Eunmi GIL ; Chi-Min PARK
Annals of Surgical Treatment and Research 2023;104(1):43-50
Purpose:
Acute care surgery (ACS) has been practiced in several tertiary hospitals in South Korea since the late 2000s. The medical emergency team (MET) has improved the management of patients with clinical deterioration during hospitalization. This study aimed to identify the clinical effectiveness of collaboration between ACS and MET in hospitalized patients.
Methods:
This was an observational before-and-after study. Emergency surgical cases of hospitalized patients were included in this study. Patients hospitalized in the Department of Emergency Medicine or Department of Surgery, directly comanaged by ACS were excluded. The primary outcome was in-hospital mortality rate. The secondary outcome was the alarm-to-operation interval, as recorded by a Modified Early Warning Score (MEWS) of >4.
Results:
In total, 240 patients were included in the analysis (131 in the pre-ACS group and 109 in the post-ACS group). The in-hospital mortality rates in the pre- and post-ACS groups were 17.6% and 22.9%, respectively (P = 0.300). MEWS of >4 within 72 hours was recorded in 62 cases (31 in each group), and the median alarm-to-operation intervals of each group were 11 hours 16 minutes and 6 hours 41 minutes, respectively (P = 0.040).
Conclusion
Implementation of the ACS system resulted in faster surgical intervention in hospitalized patients, the need for which was detected early by the MET. The in-hospital mortality rates before and after ACS implementation were not significantly different.
3.Thromboelastographic Evaluation in Patients with Severe Sepsis or Septic Shock: A Preliminary Analysis
Sokyung YOON ; JooYen LIM ; Chi-Min PARK ; Dae-Sang LEE ; Jae Berm PARK ; Kyoungjin CHOI ; Keesang YOO ; Eunmi GIL ; Kyoung Won YOON
Journal of Acute Care Surgery 2020;10(2):47-52
Purpose:
Thromboelastography (TEG) was investigated for the diagnosis of coagulopathy compared with traditional coagulation tests, in association with disease severity in patients with severe sepsis or septic shock.
Methods:
Retrospective data was collected from a single center between January 25th to March 24th, 2016. There were 18 patients with severe sepsis or septic shock admitted to intensive care units included in this study. Laboratory tests including TEG were performed at admission. Disease severity was measured using the Simplified Acute Physiology Score III, Sequential Organ Failure Assessment score, and the level of lactate.
Results:
There were 18 patients (61% males; median age, 60.5 years) who were diagnosed with severe sepsis, or septic shock requiring a norepinephrine infusion (n = 10, 55.6%). Of these, 4 patients had traditional coagulation tests, and TEG profiles which confirmed hypercoagulability. Eight patients had follow-up tests 48 hours post-admission with a Sequential Organ Failure Assessment score of 6.5 (3-9.5) at admission, decreasing to 4 (2-11) after 48 hours (although not significantly lower), however, the lactate level decreased statistically significantly from 2.965 at admission, to 1.405 mmol/L after 48 hours (p < 0.05). The TEG profiles tended to normalize after 48 hours compared with admission, but there was no statistically significant difference.
Conclusion
Coagulopathy with severe sepsis or septic shock patients can be life-threatening, therefore it is important to diagnose coagulopathy early and precisely. TEG can be a feasible tool to confirm coagulopathy with traditional coagulation tests.
4.Thromboelastographic Evaluation in Patients with Severe Sepsis or Septic Shock: A Preliminary Analysis
Sokyung YOON ; JooYen LIM ; Chi-Min PARK ; Dae-Sang LEE ; Jae Berm PARK ; Kyoungjin CHOI ; Keesang YOO ; Eunmi GIL ; Kyoung Won YOON
Journal of Acute Care Surgery 2020;10(2):47-52
Purpose:
Thromboelastography (TEG) was investigated for the diagnosis of coagulopathy compared with traditional coagulation tests, in association with disease severity in patients with severe sepsis or septic shock.
Methods:
Retrospective data was collected from a single center between January 25th to March 24th, 2016. There were 18 patients with severe sepsis or septic shock admitted to intensive care units included in this study. Laboratory tests including TEG were performed at admission. Disease severity was measured using the Simplified Acute Physiology Score III, Sequential Organ Failure Assessment score, and the level of lactate.
Results:
There were 18 patients (61% males; median age, 60.5 years) who were diagnosed with severe sepsis, or septic shock requiring a norepinephrine infusion (n = 10, 55.6%). Of these, 4 patients had traditional coagulation tests, and TEG profiles which confirmed hypercoagulability. Eight patients had follow-up tests 48 hours post-admission with a Sequential Organ Failure Assessment score of 6.5 (3-9.5) at admission, decreasing to 4 (2-11) after 48 hours (although not significantly lower), however, the lactate level decreased statistically significantly from 2.965 at admission, to 1.405 mmol/L after 48 hours (p < 0.05). The TEG profiles tended to normalize after 48 hours compared with admission, but there was no statistically significant difference.
Conclusion
Coagulopathy with severe sepsis or septic shock patients can be life-threatening, therefore it is important to diagnose coagulopathy early and precisely. TEG can be a feasible tool to confirm coagulopathy with traditional coagulation tests.