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  • Key words Mechanical ventilation  (2)
  • Pulmonary mechanics
  • Schlüsselwörter: Fourniersche Gangrän – Sepsis – Schock
  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Der Anaesthesist 43 (1994), S. 121-125 
    ISSN: 1432-055X
    Schlagwort(e): Schlüsselwörter: Fourniersche Gangrän – Sepsis – Schock ; Key words: Fournier's gangrene – Septic shock
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Abstract. Fournier's gangrene is a necrotising soft-tissue infection of the scrotum and perineal region caused by gram-negative and gram-positive Enterobacteriaceae. The disease is characterised by its unique appearance, its speed of onset, and its high mortality. Case report. A 26-year-old male presented to the emergency room complaining of a painful, tremendously swollen scrotum and penis (Fig. 1) that had developed within the past 24 h. Later, slurred speech, pallor, and hypotension were recognised, leading to the patient's admission to the intensive care unit. Suspecting a severe internal haemorrhage, vigorous volume therapy was started using crystalloids and colloids until blood and fresh frozen plasma were available. One hour later, septic shock was presumed and therapy augmented by IV antibiotics, tracheal intubation, and mechanical ventilation. Despite all efforts, the patients condition deteriorated rapidly and he died a few hours later due to multiple organ failure in septic shock. Postmortem, a perforated external hemorrhoidal node was found to be the primary focus of sepsis. Microbiologic cultures revealed Escherichia coli in blood and tissue samples. Discussion. Fournier's gangrene is a rare disease; nevertheless, its clinical picture has to be recognised immediately in order to provide appropriate treatment in time. It occurs predominantly in males after minor trauma, colorectal or urological disease, and perineal or abdominal surgery. Fournier's gangrene usually begins with itching and pain in the scrotal region followed by swelling and dark-blueish discolouration of the scrotum and penis, occasionally including the lower abdominal wall. Fever and chills are usually present. The illness progresses to severe prostration and septic shock with a mortality of 20% – 50%. Tissue cultures mostly reveal E. coli, gram-positive enterococci, Pseudomonas, Proteus, and various anaerobes. The treatment should include immediate radical surgical debridement, IV administration of broad-spectrum antibiotics, and cardiopulmonary support. Conclusion. The dramatic course of Fournier's gangrene requires early recognition, extensive surgical debridement, as well as intensive care treatment in order to prevent irreversible septic shock.
    Notizen: Zusammenfassung. Die Fourniersche Gangrän manifestiert sich meist bei Männern mittleren bis höheren Lebensalters als nekrotisierende Fasciitis des äußeren Genitales. Kennzeichnend sind eine typische Anamnese mit progredienter, schmerzhafter Hodenschwellung und Fieber, ein oft explosionsartiger Beginn, der kaum verwechselbare makroskopische Aspekt und die hohe Mortalität infolge septischer Komplikationen. Der unter Umständen dramatische Verlauf der Erkrankung erfordert ein invasives chirurgisches und intensivmedizinisches Vorgehen. Die Entscheidung hierzu setzt die rasche Diagnose des seltenen Krankheitsbilds voraus. Wir berichten über einen jungen Patienten mit Fournierscher Gangrän, der wenige Stunden nach Aufnahme ins Krankenhaus an einem foudroyant verlaufenden septischen Schock verstarb.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    ISSN: 1432-1238
    Schlagwort(e): Key words Mechanical ventilation ; Critical care ; Chronic obstructive pulmonary disease ; Patient-ventilator interaction ; Proportional assist ; Pressure support ; Work of breathing physiology
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Objective: To investigate the breathing pattern and the inspiratory work of breathing (WOBI) in patients with chronic obstructive pulmonary disease (COPD) assisted with proportional assist ventilation (PAV) and conventional pressure support ventilation (PSV). Design: Prospective controlled study. Setting: Intensive care unit of a university hospital. Patients: Thirteen COPD patients being weaned from mechanical ventilation. Interventions: All patients were breathing PSV and two different levels of PAV. Measurements and main results: During PAV (EVITA 2 prototype, Dräger, Germany), the resistance of the endotracheal tube (Ret) was completely compensated while the patients' resistive and elastic loads were compensated for by approximately 80 % and 50 % (PAV80 and PAV50), respectively. PSV was adjusted to match the same mean inspiratory pressure (Pinspmean) as during PAV80. Airway pressure, esophageal pressure and gas flow were measured over a period of 5 min during each mode. Neuromuscular drive (P0.1) was determined by inspiratory occlusions. Mean tidal volume (VT) was not significantly different between the modes. However, the coefficient of variation of VT was 10 ± 4.%, 20 ± 13 % and 15 ± 8 % during PSV, PAV80 and PAV50, respectively. Respiratory rate (RR) and minute ventilation (VE) were significantly lower during PAV80 as compared with both other modes, but the differences did not exceed 10 %. PAV80 and PSV had comparable effects on WOBI and P0.1, whereas WOBI and P0.1 increased during PAV50 compared with both other modes. Conclusion: Mean values of breathing pattern did not differ by a large amount between the investigated modes. However, the higher variability of VT during PAV indicates an increased ability of the patients to control VT in response to alterations in respiratory demand. A reduction in assist during PAV50 resulted in an increase in WOB and indices of patient effort.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    ISSN: 1432-1238
    Schlagwort(e): Static compliance ; Pressure volume curve ; Pulmonary mechanics ; Acute respiratory failure ; Adult respiratory distress syndrome
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract A new method for determination the static compliance of the respiratory system is described (“static compliance by automated single steps”-SCASS). In 12 ventilated patients pressure/volume (P/V) curves were determined by automated repetitive occlusion (6 s) at single volume steps and compared to the conventional syringe method (SM). All measurements were corrected for effects of temperature, humidity and pressure (THP). SM was found to be significantly influenced by intrapulmonary gas exchange causing an effective mean volume deficit of 217.4±65.7 ml (BTPS) at the end of the deflation. In contrast to that, the short duration of occlusion in SCASS minimize the gas exchange effects. The methodical differences between both methods result in overestimation of the inflation compliance in the uncorrected SM (SMuncorr: 83.4±12.6; SCASS: 76.0±11.9 ml/cmH2O.p〈0.01) and underestimation of the deflation compliance resp. (SMuncorr: 58.3±7.5; SCASS: 79.1±15.0 ml/cmH2O.p〈0.005). In contrast to the P/V curves by SM no significant hysteresis was found by SCASS. Gas exchange seems to be the main reason for the hysteresis. Even after correcting gas exchange and THP effects a significant hyseresis remained. The SCASS method avoids these problems and allows furthermore an accurate checking of leaks.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    ISSN: 1435-1420
    Schlagwort(e): Key words Mechanical ventilation ; intensive care therapy ; assisted spontaneous breathing ; work of breathing ; Schlüsselwörter Respirator-therapie ; Intensivtherapie ; assistierte Beatmung ; Atemarbeit
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung An 16 druckunterstützt beatmeten Patienten, davon acht mit chronisch obstruktiver Lungenerkrankung (COPD) und acht ohne obstruktive Lungenkrankheiten wurde der Einfluß eines PEEP von 5 cmH2O und einer Druckunterstützung von 5 und 10 cmH2O auf die mechanische Atemarbeit und andere atemmechanische Meßgrößen untersucht. Sowohl durch PEEP wie auch durch Druckunterstützung konnte die Atemarbeit gesenkt werden. Die Kombination beider Maßnahmen wirkte additiv. Ein PEEP von 5 cm H2O und eine Druckunterstützung von 10 cmH2O senkte die Atemarbeit im Durchschnitt um mehr als 50% in beiden Patientengruppen. Ohne Druckunterstützung leistet der Patienten mehr als 20% seiner gesamten Atemarbeit auf Widerstände des Beatmungssystems (z.B. Gasflußanlieferung, Triggermechanismus etc.). Durch 10 cmH2O Druckunterstützung war dieser Atemarbeitsanteil nahezu kompensiert und zu vernachlässigen. Ein bestehender intrinsischer PEEP bei COPD-Patienten erhöhte die Atemarbeit und wurde durch Applikation eines externen PEEP vermindert. Die Höhe der Atemarbeit war in unserer Untersuchung interindividuell sehr unterschiedlich. Daher erscheint uns eine individuelle Anpassung von PEEP und Druckunterstützung anhand der gemessenen Atemarbeit sinnvoll.
    Notizen: Summary The influence of pressure support of 5 and 10 cmH2O and low-level positive endexpiratory pressure (PEEP) of 5cm H2O on work of breathing (WOB) and breathing pattern was studied in 16 mechanically ventilated patients. Eight patients suffered from chronic obstructive lung disease (COPD), eight patients had no obstructive lung disease. Low-level PEEP as well as pressure support reduced the work of breathing. Combination of both measures was additively effective. PEEP of 5 cmH2O and pressure support of 10 cmH2O decreased WOB more than 50% on average. Without any pressure support more than 20% of WOB were done on the ventilator system (e.g. flow delivery, trigger mechanism etc.). By application of 10 cmH2O of pressure support this part of the work of breathing was negligible. In COPD patients an intrinsic PEEP increased the work of breathing which was counterbalanced by an external PEEP. However, our study revealed high interindividual differences in WOB. Thus, measurement of work of breathing is encouraged to optimize the ventilatory setting by individual adaptation of the PEEP and pressure support level.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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