• 제목/요약/키워드: ventilation obstruction

검색결과 42건 처리시간 0.027초

인위적인 기도협착이 동맥혈액가스에 미치는 영향 (Experimental Study of the Influence of the Upper Airway Obstruction on the Blood Gas Analysis)

  • 정해영;김중환;조영상
    • 대한기관식도과학회:학술대회논문집
    • /
    • 대한기관식도과학회 1979년도 제13차 학술대회 연제순서 및 초록
    • /
    • pp.8.2-8
    • /
    • 1979
  • 상부기도가 갑자기 폐쇄증을 일으켜 심한 호흡곤란증을 호소하는 환자에 대하여 응급으로. 기도 및 호흡을 재확보하여야하며 이와같은 예를 임상에서 가끔 직면하게 된다. 이러한 환자에게 적절한 기도확보는 생명을 유지시킬 수 있다. 저자는 토끼를 대상으로 기존 기관의 직경을(약 3.4mm) 약 1/3(1.2mm), 1/4(0.8mm) 및 1/6(0.6mm)로 협소시켜 생리적 변화를 추적하였다. 결과는 다음과 같았다. 1) 혈액가스의 분석결과 직경을 약 1/3로 감소시켰던 군에서 생리적 변동이 별로 없었다. 2) 직경을 약 1/4, 1/6로 감소시켰던 군에서는 $PaO_2,$ $PaCO_2$ 및 pHa에 뚜렷한 변화를 나타내어 저산소혈증, 과탄산혈증 및 대사성산증을 나타내었다. 3) 호흡저항은 모든 군에서 뚜렷하게 증가하여 1회 호흡량도 현저하게 감소하였는데 16G(직경 1.2mm 호흡로)에서는 호흡수의 증가로 폐포환기가 적당하게 영위됨에 따라서 혈액가스 및 vital signs의 변동이 별로 없던 것으로 보아 토끼에서는 이 정도의 호흡로 폐쇄에는 1시간까지 견딜 수 있음을 알았다.

  • PDF

Serious Complications after Self-expandable Metallic Stent Insertion in a Patient with Malignant Lymphoma

  • Cho, Sung Bae;Cha, Seon Ah;Choi, Joon Young;Lee, Jong Min;Kang, Hyeon Hui;Moon, Hwa Sik;Kim, Sei Won;Yeo, Chang Dong;Lee, Sang Haak
    • Tuberculosis and Respiratory Diseases
    • /
    • 제78권1호
    • /
    • pp.31-35
    • /
    • 2015
  • An 18-year-old woman was evaluated for a chronic productive cough and dyspnea. She was subsequently diagnosed with mediastinal non-Hodgkin lymphoma (NHL). A covered self-expandable metallic stent (SEMS) was implanted to relieve narrowing in for both main bronchi. The NHL went into complete remission after six chemotherapy cycles, but atelectasis developed in the left lower lobe 18 months after SEMS insertion. The left main bronchus was completely occluded by granulation tissue. However, the right main bronchus and intermedius bronchus were patent. Granulation tissue was observed adjacent to the SEMS. The granulation tissue and the SEMS were excised, and a silicone stent was successfully implanted using a rigid bronchoscope. SEMS is advantageous owing to its easy implantation, but there are considerable potential complications such as severe reactive granulation, stent rupture, and ventilation failure in serious cases. Therefore, SEMS should be avoided whenever possible in patients with benign airway disease. This case highlights that SEMS implantation should be avoided even in malignant airway obstruction cases if the underlying malignancy is curable.

Comparison of dexmedetomidine alone with dexmedetomidine and fentanyl during awake fiberoptic intubation in patients with difficult airway: a randomized clinical trial

  • Acharya, Ranjita;Sriramka, Bhavna;Koushik, Priyangshu
    • Journal of Dental Anesthesia and Pain Medicine
    • /
    • 제22권5호
    • /
    • pp.349-356
    • /
    • 2022
  • Background: Awake fiberoptic intubation (AFOI) is the procedure of choice for securing the airway in patients with a difficult airway when undergoing surgeries under general anesthesia. An ideal drug would not only provide conscious sedation but also maintain spontaneous ventilation, smooth intubation conditions, and stable hemodynamics. We compared the effects of dexmedetomidine alone and dexmedetomidine in combination with fentanyl at a dose lower than the standard dose for achieving conscious sedation during AFOI in difficult airway patients undergoing oral cancer and dental surgeries. Methods: We included 68 adult patients undergoing AFOI. The patients were randomized in two groups, wherein Group D received intravenous dexmedetomidine 1 ㎍/kg and Group DF received dexmedetomidine 0.5 ㎍/kg and fentanyl 1 ㎍/kg. The outcomes measured were airway obstruction score, intubation scores, fiberoptic intubation comfort score, sedation score, and hemodynamic variables. Results: Low-dose dexmedetomidine with fentanyl showed similar results as those with the standard dose of dexmedetomidine in terms of airway obstruction, vocal cord movement, degree of cough, degree of limb movements, and intubation comfort. However, the sedation achieved and incidence of hypotension and bradycardia were higher in Group D than in Group DF. Conclusions: A low dose of dexmedetomidine-fentanyl provides satisfactory intubation conditions as those with a standard dose of dexmedetomidine in AFOI, thereby avoiding bradycardia, hypotension, and sedation.

급성호흡부전 환자에서 기관절개술 시술 후에 발생한 양측성 긴장성 기흉 1예 (A Case of Tracheostomy Induced Bilateral Tension Pneumothorax)

  • 윤현영;오숙의;박종규;신태림;박상면
    • Tuberculosis and Respiratory Diseases
    • /
    • 제62권5호
    • /
    • pp.437-440
    • /
    • 2007
  • 기관절개술은 가장 오래된 수술기술 중의 하나로 상기도 폐쇄의 경감, 장기간의 기계호흡유지, 보조적 기계호흡시에 기도 저항의 감소 등의 목적으로 시행할 수 있다. 기관절개술에 따른 초기합병증으로는 기흉, 피하조직기종, 절개부위 출혈, 종격동 기종, 흡인, 기관절개 관 전위 등을 들 수 있다. 수술에 따른 피하조직기종과 기흉은 0.9-5%에서 보고되었다. 본 증례에서는 기관절개술 직후에 피하조직기종과 양측 폐에서 발생한 긴장성 기흉을 경험하였기에 보고하는 바이다.

구강외과 영역에 있어서의 기관절제술 31 례에 대한 임상적 고찰 (RETROSPECTIVE CLINICAL STUDY OF TRACHEOSTOMY IN ORAL AND MAXILLOFACIAL SURGERY;31 CASES)

  • 양윤석;민병국;민성기;엄인웅;김창수
    • Maxillofacial Plastic and Reconstructive Surgery
    • /
    • 제13권1호
    • /
    • pp.53-62
    • /
    • 1991
  • 기관절제술은 기도확보를 위해 다양한 임상적 상황에서 행해지는 술식으로 1546년에 Brasabola에 의해 처음 성공적으로 시행되었다. 기관절제술의 적응증으로는 상기도 폐쇄의 완화, pulmonary toilet의 촉진, dead space의 감소 및 mechanical ventilation의 장기 사용시 등을 들 수 있겠다. 그동안 term에도 변화가 있었는데, 1718년 까지는 "bronchotomy"란 term 이 사용되었고 그후 "tracheotomy"란 term 이 사용되었으나 1820년 이후에는 "tracheostomy"란 term 이 나오게 되어 현재 이 두가지 term 이 구별없이 사용되고 있다. 기도폐쇄를 야기시킬 수 있는 악안면 부위의 외상 혹은 여러가지 질병의 증가 추세로인해 구강외과의사가 기관절제술을 시행해야할 상황을빈번히 맞게 된다. 이에, 본 교실에서 기관절제술을 시행한 31 명의 환자에 대한 임상적 고찰을 통해 숙련된 기관절제술 및 그 처치능력의 중요성을 보고하는 바이다.

  • PDF

Difficult airway management in a patient with a thin mandible

  • Choi, Hong-Seok;Oh, Jong-Shik;Kim, Eun-Jung;Yoon, Ji-Young;Yoon, Ji-Uk;Kim, Cheul-Hong
    • Journal of Dental Anesthesia and Pain Medicine
    • /
    • 제16권4호
    • /
    • pp.317-320
    • /
    • 2016
  • A 47-year-old woman was referred for surgical treatment of osteomyelitis of the mandible. She had already undergone three previous surgeries. Pre-anesthetic airway evaluation predicted a difficult airway, due to the thin, retro-positioned mandible, tongue, and atrophic changes in the lips and soft tissue. We inserted packing gauzes in the buccal mucosa for easier mask fitting and ventilation. During direct laryngoscopic intubation with a nasotracheal tube (NTT), fracture of a thin mandible can easily occur. Therefore, we used a fiberoptic bronchoscope to insert the NTT. After surgery, we performed a tongue-tie to protect against airway obstruction caused by the backward movement of the tongue during recovery. The patient recovered without any complications. We determined the status of the patient precisely and consequently performed thorough preparations for the surgery, allowing the patient to be anesthetized safely and recover after surgery. Careful assessment of the patient and airway prior to surgery is necessary.

유아교사의 기본응급처치 의식에 관한 연구 - 전북 군산.전주시를 중심으로 - (A Study on the Basic Emergency Treatment Awareness Level of Kindergarten Teacher - Focus on the Jeonbuk Metropolitan Area -)

  • 노상균
    • 한국화재소방학회논문지
    • /
    • 제21권2호
    • /
    • pp.105-110
    • /
    • 2007
  • 본 연구에서는 유아교육기관에서 흔히 발생될 수 있는 내 외과적인 응급상황에 대하여 유치원 교사의 기본 응급처치 수행능력에 대해 조사하였다. 연구결과 유치원 교사의 59.4%가 전반적인 응급처치방법에 대하여 올바르게 수행하고 있었으나 일부분에 있어서는 응급처치 교육이 절실하게 필요한 것으로 조사되었다. 특히 무의식 유아의 기도폐쇄는 83.2%가, 유아 인공호흡 방법은 82.1%가 잘못된 응급처치법을 숙지하고 있었다. 또한 화상 발생 시 67.4%가 응급처치 없이 바로 병원으로 간다고 응답하였고, 찰과상에 대해서도 53.7%가 잘못된 응급처치법을 숙지하고 있었다. 유아교육기관 내에서의 안전사고에 대한 교사의 책임이 부각되면서 실전에 필요한응급처치 교육프로그램 개발이 필요하다.

수면호흡장애의 진단과 수면다원검사 (The diagnosis of sleep related breathing disorders and polysomnography)

  • 박지운
    • 대한치과의사협회지
    • /
    • 제53권4호
    • /
    • pp.238-248
    • /
    • 2015
  • Sleep related breathing disorders(SRBDs) are a group of diseases accompanied by difficulties in respiration and ventilation during sleep. Central sleep apnea, obstructive sleep apnea(OSA), sleep-related hypoventilation, and hypoxemia disorder are included in this disease entity. OSA is known to be the most common SRBDs and studies show its significant correlation with general health problems including hypertension, arrhythmia, diabetes, and metabolic syndrome. The diagnostic process of OSA is composed of physical examinations of the head and neck area and also the oral cavity. Radiologic studies including cephalography, CT, MRI, and fluoroscopy assist in identifying the site of obstruction. However, polysomnography(PSG) is still considered the gold standard for the diagnosis of OSA since it offers both qualitative and quantitative recording of the events during a whole night's sleep. The dentist who is trained in sleep medicine can easily identify patients with the risk of OSA starting from simple questions and screening questionnaires. Diagnosis is the first step to treatment and considering the high rate of under-diagnosis for OSA the dentist may play a substantial role in the diagnosis and treatment of OSA which will eventually lead to the well-being of the patient as a whole person. So the objective of this article is to assist dental professionals in gaining knowledge and insight of the diagnostic measures for OSA including PSG.

Correlations between anatomical variations of the nasal cavity and ethmoidal sinuses on cone-beam computed tomography scans

  • Shokri, Abbas;Faradmal, Mohammad Javad;Hekmat, Bahareh
    • Imaging Science in Dentistry
    • /
    • 제49권2호
    • /
    • pp.103-113
    • /
    • 2019
  • Purpose: Anatomical variations of the external nasal wall are highly important, since they play a role in obstruction or drainage of the ostiomeatal complex and ventilation and can consequently elevate the risk of pathological sinus conditions. This study aimed to assess anatomical variations of the nasal cavity and ethmoidal sinuses and their correlations on cone-beam computed tomography (CBCT) scans. Materials and Methods: This cross-sectional study evaluated CBCT scans of 250 patients, including 107 males and 143 females, to determine the prevalence of anatomical variations of the nasal cavity and ethmoidal sinuses. All images were taken using a New Tom 3G scanner. Data were analyzed using the chi-square test, Kruskal-Wallis test, and the Mann-Whitney test. Results: The most common anatomical variations were found to be nasal septal deviation (90.4%), agger nasi air cell (53.6%), superior orbital cell(47.6%), pneumatized nasal septum(40%), and Onodi air cell(37.2%). Correlations were found between nasal septal deviation and the presence of a pneumatized nasal septum, nasal spur, and Haller cell. No significant associations were noted between the age or sex of patients and the presence of anatomical variations (P>0.05). Conclusion: Radiologists and surgeons must pay close attention to the anatomical variations of the sinonasal region in the preoperative assessment to prevent perioperative complications.

Swyer James syndrome환아의 전신마취 하 치아우식 치료: 증례보고 (DENTAL TREATMENT OF A PATIENT WITH SWYER JAMES UNDER GENERAL ANESTHESIA: A CASE REPORT)

  • 성영제;송지수;현홍근;김영재;김정욱;장기택;이상훈;신터전
    • 대한장애인치과학회지
    • /
    • 제15권1호
    • /
    • pp.60-64
    • /
    • 2019
  • Swyer James 증후군은 영아기 및 소아기의 호흡기 감염으로 인한 폐쇄성 기관지염의 형태로, 단순 흉부 촬영에서 한쪽 폐의 과투과성을 특징으로 한다. 특별한 증상이 없어 우연히 발견되기도 하나, 반복적인 호흡기 감염 등을 유발할 수 있다. 아산화질소가 폐포 파열을 유발할 수 있고, 기흉을 악화시킬 수 있기 때문에 협조도가 필요한 환자의 경우 전신마취가 권장된다. 전신 마취시에 폐 환기의 저하로 인한 저산소증이 보고된 바 있기 때문에, 면밀한 호흡과 관련한 환자감시가 필요하다.