No abstract available.
Hypercapnia* ; Respiratory Insufficiency*

No abstract available.
Hypercapnia* ; Respiratory Insufficiency*

No abstract available.
Hypercapnia* ; Respiration, Artificial*

Malfunction of the unidirectional valve in a breathing circuit system may cause hypercapnia from the rebreathing of expired gas, ventilation failure, and barotrauma. Capnography is a useful method for monitoring the integrity of the unidirectional valve. We experienced two cases of malfunction of a unidirectional valve which caused leakage and reverse flow, diagnosed early as a change of the capnographic waveform. One case was caused by expiratory unidirectional valve breakage. The other was caused by an incorrectly-assembled inspiratory unidirectional valve.
Barotrauma ; Capnography ; Hypercapnia ; Respiration ; Ventilation

Interventional lung assist (iLA) effectively reduces CO2 retention and allows protective ventilation in cases of life-threatening hypercapnia. Despite the clinical efficacy of iLA, there are a few major limitations associated with the use of this approach, such as bleeding, thrombosis, and catheter-related limb ischemia. We presented two cases in which thrombotic complications developed during iLA. We demonstrated the two possible causes of thrombotic complications during iLA; stasis due to low blood flow and inadequate anticoagulation.
Extremities ; Hemorrhage ; Hypercapnia ; Ischemia ; Lung* ; Thrombosis ; Ventilation

No abstract available.
Continuous Positive Airway Pressure* ; Hypercapnia* ; Pneumonia* ; Pulmonary Edema*

No abstract available.
Continuous Positive Airway Pressure ; Hypercapnia ; Pneumonia ; Pulmonary Edema

The purpose of this study is to verify severity of asthma in asthmatic patients through through the arterial blood gas analysis. Subjects were consisted of 103 patients (74 boys and 29 girls), between 2~13 years of ages. Clinically, asthmatic patients were classified into 6 groups, i, e., group 0(no rhonchi), group 1(rhonchi only), group 2(mild attack), group 3(moderate attack), group 4(severe attack), group 5(respiratory failure with disturbance of consciousness). PH kept normal range in the group 0, group 1, group 1 and group 3,but began decrease in the group 4.There was linear fall in Po2 and began decrease in the group 3. HCO3- maintained normal level through the whole range. BE showed acidemia on the whole, and began distinctive decrease in the group 4 and group 5, especially. Hypoxemia, hypercapnia and acidemia were common in patients in severe attacks with disturbance of consciousness.
Anoxia ; Asthma ; Blood Gas Analysis* ; Child* ; Consciousness ; Humans ; Hydrogen-Ion Concentration ; Hypercapnia ; Reference Values

A 35 year old male patient with inhalation injury including 45% body surface area burn was transferred to the hospital. After 2 days of hospitalization lung protective ventilation was supported due to acute respiratory distress occurrence. Fifth day the patient suffered hypercapnea which was uncontrollable with mechanical ventilators. Interventional lung assist (iLA) was proceeded on the tenth day, and the patients hypercapnia symptom was compatible with lung protective ventilation at the time, but the patient eventually suffered death after 12 days of treatment and care in the hospital.
Body Surface Area ; Burns ; Hospitalization ; Humans ; Hypercapnia ; Inhalation ; Lung ; Male ; Ventilation ; Ventilators, Mechanical

BACKGROUND: Anesthetists participating in laparoscopic cholecystectomy (LC) with CO2 pneumoperitoneum has been cautious about adapting low-flow anesthesia (LFA). We investigated the efficacy of LFA compared to high-flow anesthesia (HFA) in LC. METHODS: Eighty patients undergoing LC were randomly assigned to one of the two groups (n = 40 each). In LFA, 1 L/min (50% O2 and N2O) of the total fresh gas flow (FGF) was used, whereas 4 L/min of the total FGF was used for HFA. Inspiratory and expiratory concentrations of O2, N2O, CO2, and sevoflurane were serially measured. Subjects were monitored for heart rate, blood pressure, and any procedural complications. RESULTS: None of the patients experienced any episodes of hypoxia, hypercapnia, and arrhythmia in both groups. The maximal end-tidal CO2 was 40.9 +/- 3.9 mmHg in LFA and 38.2 +/- 3.6 mmHg in HFA, respectively. The minimal O2 saturation was 98.3 +/- 0.6% in LFA and 98.8 +/- 0.7% in HFA, respectively. The inspiratory CO2 concentrations in both groups were all less than 1 mmHg throughout the anesthesia. CONCLUSIONS: In conclusion, LFA with sevoflurane using FGF of 1 L/min with setting of 50% O2 and N2O for LC could be performed safely without the risk of complications like hypercapnia, hypoxia, or arrhythmia compared to HFA.
Anesthesia* ; Anoxia ; Arrhythmias, Cardiac ; Blood Pressure ; Cholecystectomy, Laparoscopic* ; Heart Rate ; Humans ; Hypercapnia ; Laparoscopy ; Pneumoperitoneum