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Query: UMLS:C0034067 (emphysema)
 11,506 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Permanent tracheotomy was the first surgical procedure proposed for the treatment of severe obstructive sleep apnoea syndrome and is still the only surgical option that ensures, even in very severe cases, complete elimination of apnoea and, in turn, clinical remission. Improved knowledge of the causes of obstructive sleep apnoea syndromes and the increasing therapeutic options (instrumental, medical and surgical) have resulted in cases requiring tracheotomy as the only indispensable therapeutic option becoming more rare. At present, the only indications are in very occasional conditions of life-threatening obstructive sleep apnoea syndromes and in patients on whom continuous positive airway pressure is not tolerated or is not effective (severe deoxygenation or hypercapnia, severe respiratory disorder index, severe obstructive sleep apnoea syndrome-related arrhythmias, severe excessive daytime sleepiness, heart diseases or ischaemic encephalopathy exacerbated by obstructive sleep apnoea syndromes, obstructive pneumopathy exacerbated by obstructive sleep apnoea syndromes, severe obstructive sleep apnoea syndromes with few chances of resolution with other surgical procedures or failure of the latter). Moreover, it is the only therapeutic solution in rare nocturnal laryngeal stridor due to multisystemic atrophy (in which obstructive sleep apnoea syndrome is due to nocturnal laryngospasm of neurologic origin). Therapeutic tracheotomy must be permanent (tracheostomy) and, therefore, preferably carried out with a specific technique (skin-lined tracheotomy), able to guarantee greater stability, less risk of granulation tissue, wider opening of the tracheostomy, sufficient reversibility. In our experience, very few patients (10 cases) withsleep disorder breathing have been submitted to skin-lined tracheotomy. Of these, the majority were submitted to surgery for severe apnoea due to nocturnal laryngospasm on account of multisystemic atrophy (n = 7), while only 3 cases of obstructive sleep apnoea syndromes were submitted to skin-lined tracheotomy, i.e., 0.7% of the 424 patients operated on for obstructive sleep apnoea syndrome and 1.7% of the 175 operated on for severe, or very severe, obstructive sleep apnoea syndromes (RDI > 40). Skin-lined tracheotomy was not followed by important complications and expected results were achieved with immediate disappearance of daytime symptoms and considerable improvement in nocturnal apnoea. Besides sleep-related disorders, numerous clinical situations with indications for a permanent tracheotomy may benefit from the skinlined technique, such as severe laryngeal or tracheal stenoses, laryngeal diplegias, miasthenia gravis, lateral amyotrophic sclerosis, intractable aspiration, severe emphysema.
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PMID:Role of skin-lined tracheotomy in obstructive sleep apnoea syndrome: personal experience. 1546 94

Bronchoscopic lung volume reduction is a novel approach to the treatment of severe emphysema. Its objective is to achieve the same improvements in lung function and exercise tolerance as lung volume reduction surgery while avoiding the surgical morbidity and mortality. We describe the anesthetic experience in a series of seven patients who underwent a total of eight procedures (one patient underwent a second procedure on the contralateral side). The technique used was one of total IV anesthesia using remifentanil and propofol, with a ventilatory strategy aimed at avoiding gas trapping and dynamic hyperinflation. To achieve this pressure, limited ventilation with a prolonged expiratory phase was provided by a Draeger Evita 2 ventilator. This technique resulted in intraoperative hypercapnia (Paco(2) 6.75 kPa) compared with baseline values (median Paco(2) 5.1 kPa; P < 0.05), but 2 h postoperatively the arterial partial pressure of CO(2) was returning to baseline (median Paco(2) 5.6 kPa; P < 0.01 compared with intraoperative data). There were no deaths or admissions to the intensive care unit after the procedure. One patient developed a pneumothorax that required drainage, three patients had acute exacerbations of chronic obstructive pulmonary disease, and one patient developed a cough that resolved spontaneously. Total hospital stay did not exceed 5 days for any of these patients.
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PMID:Bronchoscopic lung volume reduction in patients with severe emphysema: anesthetic management. 1556 41

A case of dramatic improvement of respiratory function after lobectomy for bullous emphysema with severe hyperinflation of the left lower lobe was reported. A 72-year-old gentleman was admitted to our hospital due to increasing dyspnea with Hugh-Johns class V. His chest X-ray and computed tomography revealed a hyperinflation of the left lower lobe. Despite medication and respiratory rehabilitation, blood gas analysis showed hypercapnia and his symptoms had been progressing. Bronchofiberscopy revealed that the left lower lobe bronchi opened on inspiration and closed on expiration. Since complete destruction of the lower lobe due to air trapping was thought to be the cause of localized hyperinflation and the compression of left upper lobe, left lower lobectomy was performed. His dyspnea immediately disappeared and the respiratory function improved dramatically. We concluded that lobectomy could be considered as one of surgical options in case of complete lobar destruction in emphysema patients.
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PMID:Dramatic improvement of respiratory condition after lobectomy for localized bullous emphysema. 1556 65

We report on a patient who developed subcutaneous emphysema with hypercarbia during an endoscopic, totally extraperitoneal (TEP) repair of an inguinal hernia. The possible mechanisms of carbon dioxide (CO2) insufflation causing emphysema of the subcutaneous tissues are discussed and ways to prevent it are proposed.
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PMID:Subcutaneous carbon dioxide emphysema following endoscopic extraperitoneal hernia repair: possible mechanisms. 1563 Sep 50

This trial prospectively compares two methods of percutaneous tracheostomy, both routinely used in ICU: the Ciaglia progressive dilational tracheostomy and the Griggs forceps dilational tracheostomy. One hundred patients were randomized using a single-blinded envelope method to receive progressive or forceps percutaneous tracheostomy performed at the bedside. Operative time, the occurrence of hypoxaemia or hypercapnia and complications were recorded. The progressive technique took longer than the forceps technique (median 7 (range 2-26) vs. 4 (1-16) minutes, P = 0.0005). Hypercapnia occurred in both groups but was more marked with the progressive technique (56 (16) vs. 49 (13) mmHg, P = 0.0082). Minor complications (minor bleeding, transient hypoxaemia, damage to posterior tracheal wall without emphysema) were also more frequent with the progressive technique (31 vs. 9 complications, P < 0.0001). Six major complications occurred with the progressive technique, none with the forceps technique (P = 0.0085): tension pneumothorax, posterior tracheal wall injury with subcutaneous emphysema, loss of airway with hypoxaemia, loss of stoma with impossible re-catheterization, and two conversions to another technique. In conclusion, progressive dilational tracheostomy took longer, caused more hypercapnia and more minor and major difficulties than forceps dilational tracheostomy.
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PMID:Prospective randomized comparison of progressive dilational vs forceps dilational percutaneous tracheostomy. 1691 63

We describe 4 nonconsecutive cases of infants admitted to Catholic University pediatric intensive care unit (PICU) because of complicated respiratory syncytial virus (RSV) infection during winter RSV outbreaks from the year 2000 to the year 2003. A hyponatremic epileptic status (as in the first case) has been reported by several authors as a rare RSV complication, potentially leading to death. The second infant developed a serious pulmonary edema after a subglottic obstruction (croup) associated with RSV infection. The remaining 2 infants developed a pneumothorax and subcutaneous emphysema while breathing spontaneously during an RSV bronchiolitis. In all infants, a full recovery and PICU discharge was achieved despite the need for mechanical ventilation in cases 1 and 2. Increased intrapleural negative pressure or its combination with hypoxia/hypercapnia has been suggested as the common factor possibly joining these different clinical pictures.
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PMID:Sharing features of uncommon respiratory syncytial virus complications in infants. 1691 26

It has been reported that the degree of emphysema induced by chronic cigarette smoke (CS) is greater in female C3H/HeN mice as compared to other mouse strains. We hypothesized that these mice would develop the similar major characteristics seen in hypercapnic patients with chronic obstructive pulmonary disease (COPD), including emphysema, pulmonary inflammation, hypercapnia/hypoxemia, rapid breathing, and attenuated ventilatory response (AVR). Mice were exposed either to CS or filtered air (FA) for 16 weeks. After exposure, arterial blood gases and minute ventilation were measured before and during chemical challenges in anesthetized and spontaneously breathing mice. We found that as compared to FA, CS exposure caused emphysema and pulmonary inflammation associated with: (1) hypercapnia and hypoxemia, (2) rapid breathing, and (3) AVR to 25 breaths of pure N(2), 5% CO(2) alone, and 5% CO(2) coupled with 10% O(2). The similarity of these pathophysiological characteristics between our mouse model and COPD patients suggests that this model could be effectively applied to study COPD pathophysiology, especially central mechanisms of the AVR genesis.
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PMID:Blunted ventilatory response to hypoxia/hypercapnia in mice with cigarette smoke-induced emphysema. 1753 48

The authors tested whether macrophage metalloelastase (MMP-12) and substance P (SP) were increased in the cigarette smoke (CS)-exposed female C3H/HeN mice with hypercapnic emphysema. The authors found that as compared to control (filtered air), 16 weeks of CS exposure significantly up-regulated mRNA and protein levels of MMP-12, the ratio of MMP-12/tissue inhibitor of matrix metalloproteinase-1, and SP/preprotachykinin-A (a precursor to SP) in the lungs. Importantly, a significant correlation was found between MMP-12 and SP, and between MMP-12/SP and the degrees of hypoxemia/hypercapnia denoted in CS-exposed mice. These data suggest a possible involvement of SP and MMP-12 in the pathogenesis of severe COPD.
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PMID:Cigarette smoke-induced hypercapnic emphysema in C3H mice is associated with increases of macrophage metalloelastase and substance P in the lungs. 1762 Jan 83

Pulmonary artery sling is a rare variant of vascular ring where the left pulmonary artery arises from the right and loops behind the trachea or right bronchus causing airway compression. A 40-day-old infant had been mechanically ventilated since birth for severe hypercapnia and right lung emphysema. Left pulmonary artery reimplantation was successfully performed.
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PMID:Neonatal right lung emphysema due to pulmonary artery sling. 1784 23

COPD is a frequent disease, affecting approximately one in four smokers. In older patients > 70 years of age, the proportion of individuals who never have smoked increases up to one in three individuals. Severe disease is present in 10%, and the limitation of performance is usually caused by airway obstruction, in a smaller portion of patients by the loss of alveolar surface (emphysema). After medical treatment with antiobstructive and anti-inflammatory drugs, oxygen remains a major therapy option. With it, hypercapnic patients benefit most from long-term therapy. Patients with predominant emphysema benefit most from high-flow (6-8 l/min) oxygen therapy during exercise. Permanent yellow or greenish sputum decoloration is suggestive of chronic bacterial colonization. This group of patients may benefit from a permanent inhalative therapy with antibiotics (mainly aminoglycosides). There is growing evidence from current literature to support this concept. If dyspnea is severe, especially during mild exercise, a subset of patients might benefit from the use of long-acting morphium. Goal of this therapy is to downregulate breathing control. Predominantly "pink puffers" seem to respond. A dose of 10-20 mg will usually be sufficient. Life-threatening hypercapnia is usually not observed with this form of therapy. Noninvasive ventilation is an option for patients with severe hypercapnia. Thereby, ventilatory pressure or inspiratory volume should be selected to effectively unload the respiratory muscles. This will increase quality of life. Life span is likely to be prolonged, however, comparative data where patients were effectively ventilated (as seen on the reduction of hypercapnia) are missing. A multicenter trial addressing this topic is currently being conducted in Germany. Independent of the severity of COPD, patients in general benefit from physical training with alternation of endurance and interval training being most effective. This will decrease the number of hospital admissions and probably mortality as well. Lung volume reduction surgery virtually treats lung hyperinflation. Bullectomy is still considered effective for isolated bullous emphysema as well as lobectomy, if this portion of the lung is without function. Shaving procedures are still associated with high rates of complications and should only be performed in selected cases. Effectiveness of endoscopic lung volume reduction surgery by implantation of plugs or valves cannot be assessed yet. First data are rather disappointing. Ultimate alternative remains lung transplantation with life expectancy ranging between 5-6 years independent of age. Indeed, consequent application of previously described measures might preserve a stable state over many years.
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PMID:[Clinical Year in Review - advanced COPD]. 1799 82


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