Penicillin V och hur tre doser blev till tva och sedan till tre igen : Historiken bakom behandling av otit, sinuit och faryngotonsillit

Cervical necrotizing fasciitis is a serious, rapidly progressive infection along fascia planes that sometimes involves skin, subcutaneous tissue and muscle (myositis). The condition, often of dental or pharyngeal origin, is associated with high morbidity and mortality. Thirteen consecutive cases of cervical necrotizing fasciitis treated with hyperbaric oxygen at the Karolinska Hospital during the period 1997-2003 were reviewed. Eight male and five female patients, 33 to 78 years old, were treated according to the Karolinska Hospital guidelines for severe soft tissue infections. All patients recovered. Eleven of thirteen patients required intensive care and eight inotropic drugs. Streptococcus milleri was the predominant pathogen found in initial cultures. Three case reports are presented. Our findings lend further support to the literature on the importance of a prompt multidisciplinary approach with aggressive surgical intervention, broad-spectrum antibiotic therapy and hyperbaric oxygen therapy.

Objectives: To study the circulatory integrity of the sinus mucosa following surgery, the vascular anatomy, blood flow and vasoconstrictor response of the regenerated microcirculatory network were analyzed. Study Design: Forty-six New Zealand White rabbits were operated on unilaterally with either a modified radical operation (MRO) or middle meatal antrostomy (MMA), using the nonoperated sinus for control purposes. After surgery,the animals were left to heal for 1 month. Methods: Vascular casts were prepared with a law-viscosity methyl methacrylate resin and studied by scanning electron microscopy, Blood flow was measured by means of radiolabeled microspheres (tin 113 [Sn-113]). The vasoconstrictor response to oxymetazoline at increasing concentrations was measured with laser Doppler flowmetry, Results: The number of vessels increased significantly in the regenerated mucosa. The vascular casts displayed a rich microcirculation with local signs of angiogenesis. However, there was no difference in blood flow between the operated cavities and their control sides. Following MRO the regenerated mucosa was more sensitive to the vasoconstrictor effect of oxymetazoline, compared with the control side. This difference was not evident in the MMA-operated sinuses. Conclusions: In this model, surgery does not seriously interfere with the sinus blood flow, although the regenerated mucosa did display an altered vasoreactivity, These findings should be considered in relation to the effects of surgery intended to limit local inflammation and to ensure the ventilation of the sinuses.

Two hundred and nineteen children with sinusitis treated as in-patients at Huddinge University Hospital during the period 1980-1992 have been reviewed. Epidemiological data, the clinical picture, treatment and complications are described. The prevalence of significant predisposing conditions (such as upper airway allergy, asthma, and immunoglobulin deficiency) has been estimated. Serious sinusitis complications are few, surgery is only rarely required, and previously-recognized important predisposing paediatric conditions are not significantly more common than in the general juvenile population. Improved medication and prevention may have reduced the incidence of serious sinus infections in risk groups today. Children with cystic fibrosis have been reviewed with regard to the necessity of both sinus and nasal polyp surgery. Aggressive medical therapy appears to have reduced their need for sinus surgery as well as polypectomy.

The aim of the present investigation was to study the histopathologic mucosal changes occurring in chronic maxillary sinusitis both preoperative and postoperative to functional endoscopic sinus (FES) surgery and the Caldwell-Luc (C-L) operation. Correlations were also sought between the histopathologic parameters and endoscopic findings, as well as patient symptoms. Sixty sinuses with the FES surgery and 55 sinuses with the C-L procedure were studied. The histologic parameters were graded semiquantitatively and compared preoperatively and postoperatively. The C-L operation reduced almost all parameters, whereas after the FES operation only edema and inflammatory cells were significantly reduced. Fibrosis increased postoperatively with both methods. The number of inflammatory cells was closely correlated to a thickened antral mucosa and to purulent secretion. No valid correlations were found when comparing histology with patient symptoms. All in all, histologic considerations suggest that asthmatic patients with severe sinonasal polyposis might benefit from the C-L procedure.

A rapid regeneration of the epithelium takes place in the maxillary sinus in rabbits after experimental operative removal of the mucosa. Two weeks postoperatively the previously denuded areas have reepithelialized. The subepithelial glands, however, do not seem to regenerate. The normal sinus mucosa contains numerous serous glands in the lamina propria, but in the regenerated mucosa these glands are replaced by dense connective tissue. Atypical glands and polyp formations are sometimes encountered, but goblet cells are sparse. Furthermore, the sinus cavity on the operated side is reduced in size compared with the nonoperated side because of fibrosis and periosteal reactions including bone degradation and neogenesis. This study indicates that although the mucosa is reepithelialized within 2 weeks, the regeneration of the lamina propria is incomplete, and reactive cellular processes such as bone remodeling, fibroblast proliferation, and formation of polyps and “atypical glands” are characteristic of regenerating mucosa.

Unilateral maxillary sinusitis was induced in 30 New Zealand White rabbits with Streptococcus pneumoniae or Bacteroides fragilis. In another group of 15 rabbits without infection, the sinus mucosa was surgically removed in defined areas. In both series, the sinuses were serially sectioned for histological analysis of the cellular regenerative capacity. In maxillary sinusitis induced by Bacteroides fragilis, an inflammatory and also reparative process involving all mucosal layers including the underlying periosteum was seen. The more superficial trauma as found in pneumococcal sinusitis eventually led to restitution ad integrum. Following surgical removal, the denuded sinus-lining was reepithelized by a flattened ciliated epithelium on a lamina propria displaying fibrosis and lacking serous glands. The restoration of the rabbit maxillary sinus mucosa after surgical trauma thus leads to structural abnormalities of the epithelium as well as the lamina propria, and these changes are likely to interfere with the normal function of the sinus mucosa.

Experimental acute sinusitis can be induced in New Zealand white rabbits by Streptococcus pneumoniae serotype 3, or the anaerobe Bacteroides fragilis, after blocking of the sinus ostium. Histological examination of the sinus mucosa in both models reveals edema, dilated venules, leukocytic infiltration, goblet cell formation, as well as localized epithelial lesions. In comparison the bacteroides sinusitis enhances a more pronounced and long-lasting tissue reaction, including periosteal thickening and new bone formation. The sinus mucosal blood flow as measured with microspheres Sn113 is increased as compared to control side in pneumococcal sinusitis. An increased lactate concentration of sinus secretions as well as in the pathological sinus mucosa indicates an anaerobic metabolism. Furthermore, a decreased ATP-content of the sinus mucosa suggests an energy depletion which could impair epithelial function. The anaerobic milieu of the sinus secretion is probably created by the leukocytes as analyzed by the separation of the D- and L-form of lactate.

In order to study the effect of a purulent infection in the sinus cavity on the uptake of radionuclide in the surrounding bone, two series of experiments were performed; one using 45Ca-chloride (T1/2 = 153 d), that was given intravenously in a dose of 50 MBq to the previously infected animal, and in the other 99Tcm-DP was used in a dose of 530-1600 MBq. The animals were killed 4-6 hours later and analyzed using an autoradiographic technique and histological examination. Chronic unilateral infection of the maxillary sinus was induced experimentally according to the technique described by Kumlien and Schiratzki (1985). An acute unilateral maxillary sinusitis was induced experimentally according to Johansson et al. (1988). An increased uptake of 99Tcm-DP in the bone surrounding the sinus cavity with an infected mucosa could be seen. This uptake could be seen four days after induction of an acute, purulent, pneumococcal sinusitis, and five months after the induction of an purulent, chronic sinusitis. No increase in uptake could be seen in the mucosa of the sinus with purulent infection. The beta-emitting nuclide gave better resolution in autoradiography than did the gamma-emitting nuclide, and would give better possibilities in identifying structures; however, the specificity to bone of 45Ca was not high enough to be suitable.

A bacteriological and histological study of acute pneumococcal sinusitis in rabbits was performed. The sinus ostium was blocked unilaterally and on the second day 108 Streptococcus pneumoniae type 3 were injected into the sinus cavity. The bacteriology of the sinus secretion and the morphological alterations of the sinus mucosa was determined 1, 2, 3 and 4 weeks after initiation of infection. Initially a pronounced mucosal infiltration of granulocytes and lymphocytes was found. Squamous cell metaplasia as well as areas of desquamated epithelium were also evident. This heavy inflammatory reaction gradually declined and after 4 weeks the epithelium appeared more normal, although goblet cells and subepithelial thickening, both associated with a more chronic infection, were found in certain areas. After 2 weeks, the initially reisolated pneumococci were replaced by a nonfermentative Gram-negative flora as well as anaerobic bacteria.

An acute pneumococcal maxillary sinusitis was induced in New Zealand white rabbits by unilateral obstruction of the sinus ostium and then injecting 10(8) Streptococcus pneumoniae into the sinus. After subjecting this bacterial strain to one animal passage, the bacteria were reisolated in nine of ten infected maxillary sinuses. All rabbits developed a unilateral purulent sinusitis, while a non-purulent sinusitis could be induced by occlusion only of the maxillary ostium. By using a non-diffusable tracer, microspheres labelled with Sn113, blood flow measurements were performed on these sinuses. These studies showed that the blood flow of the infected sinuses was significantly higher than on the control side. However, in chronic sinusitis (with a blocked ostium), the blood flow did not differ significantly from that on the control side. Biochemical studies in the animals with purulent sinusitis demonstrated that lactate concentration in the mucosa was significantly higher as compared to the control side. The glucose concentration was significantly lower in the mucosa of the infected side, as was the ATP content of the sinus mucosa in purulent sinusitis. These results indicate an increased glycolysis as well as a relative energy depletion in the sinus mucosa in purulent sinusitis, which could result in an impaired epithelial function.

In previous studies, sinus secretions have been analysed concerning pO2, pCO2 and pH. In this study the energy metabolism in the maxillary sinus mucosa and secretion was studied in 33 New Zealand White rabbits. In freeze-dried samples, glucose and lactate were analysed by enzymatic assays and ATP by HPLC. In the purulent sinusitis, lactate concentration in the mucosa was 5.67 mmol X kg-1 w.w. and significantly higher than in the control sinus. Also in the non-purulent sinusitis, lactate was increased in the mucosa. The lactate concentrations in the secretion were 9.8 and 8.4 mmol X kg-1 w.w. in purulent and non-purulent secretions respectively and are probably the result of a diffusion from the mucosal cells and of leukocyte metabolism. A reduced ATP content, with increases in ADP and AMP, in the sinus mucosa of the purulent sinusitis suggests a relative energy depletion which could result in impaired epithelial function.

A bacteriological and histological study of experimentally induced acute pneumococcal sinusitis was performed in 69 New Zealand White rabbits. The sinus ostium was blocked on one side on the first day of the experiment. On the second day, 10(7)-10(9) Streptococcus pneumoniae in 1 ml were injected into the same sinus cavity. Purulent sinusitis developed unilaterally in all rabbits. Histological examination of the sinus mucosa revealed edema, dilated venules, leukocytic infiltration of the mucosa as well as localized epithelial lesions. On staining with acridine orange at pH 4.0, the bacteria were observed in the secretion but not in the mucosa. When we used Streptococcus pneumoniae subjected to an animal passage, the bacteria were re-isolated in 9/10 infected sinuses. Neither sole occlusion of the ostium nor injection of pneumococci into a sinus cavity with a patent ostium resulted in a bacterial sinusitis. Obstruction of the sinus ostium and the use of a virulent Streptococcus pneumoniae strain were essential for the induction of sinusitis in rabbits.