Application Of Laryngeal Mask Airway Research Articles

Application of Laryngeal Mask Airway (LMA) in Medium and Short Period Traumatic Orthopedic Surgeries

Objective:Application of Laryngeal Mask Airway (LMA) as a ventilation method has been rarely explored in short and medium period orthopedic operations. In this study, we evaluated ventilatory efficacy of LMA in patients admitted to Ho Chi Minh City Orthopedic and Rehabilitation Hospital, Vietnam via a number of patient indicators including changes of pulse, blood pressure, airway pressure, SpO2 and pressure of CO2 at the end of an exhaled breath (EtCO2).
 Method: A total of 154 emergency and elective surgery cases with anesthesia were selected for the study.
 Result: One minute after LMA insertion to discontinuation of anesthetic, we recorded slower pulse of patients but only twenty-six cases (16.9%) required intravenous administration of atropine. Blood pressure of patients dropped after 1 minute following LMA insertion but then recovered afterward and only nine cases (5.8%) needed administration of ephedrine.
 Conclusion: After surgery, only eleven (7.15%) patients experienced oral mucosal bleeding but no further special treatment was used.
 Bangladesh Journal of Medical Science Vol. 23 No. 01 January’24 Page : 207-213

Effect of Local Application of Dexamethasone on Reducing of post-surgical Sore Throat due to application of Laryngeal Mask Airway

This study investigated the local effect of Dexamethasone on sore throat after surgery using the LMA. This study is a double-blind randomized clinical trial conducted on 100 patients underwent general anesthesia who were candidates of placement of laryngeal mask airway. The patients were randomly assigned to two groups of 50. In the experimental group, Dexamethasone was applied to the cuff of the LMA and in the control group; distilled water was applied to the cuff. The rate of incidence and intensity of sore throat, prevalence of coughing, and hoarseness were assessed at 1, 2, and 24 hours after surgery. Data were analysed by t-test, Chi-Square test, and Fisher's Exact test. The incidence of sore throat during 24 hours after surgery was 8% in Dexamethasone group and 22% in distilled water group. The intensity of pain at the intended times after surgery significantly decreased in both groups (P=0.019). The prevalence of coughing showed a significant decrease at 1 h after surgery in both groups (P=0.025). The local application of Dexamethasone on the LMA cuff was effective on reducing the prevalence and acuity of sore throat after surgery. Regarding lack of any complications due to the use of Dexamethasone, it can be used to prevent the postoperative sore throat.

The application of laryngeal mask airway in primary hospital-based anesthesia and urgent resuscitation

Objective To investigate the application of laryngeal mask airway in primary hospital-based anesthesia and urgent resuscitation. Methods 80 patients with respiratory failure or arrest due to various causes who had been hospitalized during the period of June 2009 to June 2010 to receive surgery were randomly assigned to receive laryngeal mask airway anesthesia( 40 patients, study group ), or endotracheal intubation anesthesia (40 patients, control group ). The difficulty degree of intubation, and heart rate ( HR ), systolic blood pressure ( SBP ), and diastolic pressure ( DBP ) at pre-induction of anesthesia ( T0, baseline), post-induction ( Tl ), the moment of intubation or placement of laryngeal mask airway ( T2 ), 5 min ( T3 ) or 10 min ( T4 ) after intubation or placement of laryngeal mask airway were compared between the two groups. Results Intubation was much easier in the study group than in the control group ( P> 0.05 ). BP and HR did not change significanlty in the study group after placement of laryngeal mask airway ( P> 0.05 ) while they increased in the control group after tracheal intubation ( P < 0.05 ). Conclusions Placement of laryngeal mask airway is simple, reliaable, and safe and is beneficial for urgent resuscitation. Key words: Laryngeal mask; Anesthesia; Resuscitation; Application

The application of laryngeal mask airway in interventional embolization therapy of cerebral aneurysm

Objective To evaluate the security and feasibility of the use of LMA in interventional embolization therapy of cerebral aneurysm and compare with endotracheal intubation. Methods Eighty ASA Ⅰ -Ⅱ patients aged 22-65 y undergoing elective cerebral aneurysm embolization were enrolled in this study. The patients were randomized to receive either LMA (group L,n=40) or endotracheal intubator(group T, n=40). Hemodynamic parameters were continuously monitored during anesthesia induction, operation and anesthesia recovery. The time to recovery, eyes opening and extubation were recorded. Whether coughing, restlessness, nausea and the incidences of body movement(9), coughing (4),nausea and vomiting(4) and sore throat (7) of group T were much higher(P＜response and is more suitable for interventional cerebral aneurysm embolizaiton. Key words: Laryngeal mask airway; General anesthesia; Cerebral aneurysm; Interventional embolization

Clinical observation in application of laryngeal mask airway in gynaecological laparoscopy and its nursing countermeasures

Objective To explore the effect of laryngeal mask airway used in gynaecological laparoscopy and the nursing experience. Methods 80 selected patients undergoing gynaecological laparoscopy were divided into two equal-sized groups for airway management with the laryngeal mask airway group(L group)and the control group(C group). MAP、HR、SPO2、PETCO2 of all patients were observed at before induction, at airway insertion, at pneumoperitoneum, at airway removal. The ratio of postoperative nausea、vomiting、laryngismus、pharyngalgia、cerchnus、back streaming and aspiration were recorded. Results MAP and HR increased significantly in C group than L group at airway insertion and removal. SPO2 and PETCO2 had no significant difference in two groups at any time. The ratio of postoperative nausea、pharyngalgia、cerchnus was respectively higher in C group than L group. The ratio of laryngismus、vomitiong、backstreaming and aspiration in L group was similar with C group. Conclusions Laryngeal mask airway is an effective airway device for gynaecological laparoscopy, it has low incidence of complication, and make nursing care easy during operation. Key words: Gynecology; Laparoscopic surgery; General anaesthesia; Laryngeal mask airway; Nursing

Application of laryngeal mask airway to inhale oxygen among patients with tracheotomy

Objective To study the effect of using laryngeal mask airway to inhale oxygen after tracheotomy.Methods 64 patients with tracheotomy were randomly divided into two groups.The observation group (n=32) were given laryngeal mask airway to inhale oxygen, while the control group (n=32) followed the conventional way of oxygen inhalation (using the hose of disposable scalp needle without pinhead).cO2 and SpO2 in their continuous end expiration were monitored.Results The patients with tracbeotomy in the observation group had significant lower sputum density, lower risk of blockage of oxygen rubber hose, lower pulse oxygen saturation and less complication in operation area than those in the control group.5 minutes after giving oxygen, the blood oxygen saturation was (95.0±2.56) % in the observation group, and (93.0±2.35) % in the control group.The difference had a statistical meaning (P<0.05) between the two groups.conclusions For patients with tracbeotomy, the use of laryngeal mask airway to inhale oxygen could improve the oxygen saturation of blood, relieve hypoxemia and decrease the complications in operation area quickly and effectively. Key words: Laryngeal mask airway; Tracheotomy

Clinical Application of Laryngeal Mask Airway in Cesarean Section

Clinical Application of Laryngeal Mask Airway in Cesarean Section