24Th International Symposium on Intensive Care and Emergency Medicine Brussels, Belgium, 30 March – 2 April 2004
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Available online http://ccforum.com/supplements/8/S1 Critical Care Volume 8 Suppl 1, 2004 24th International Symposium on Intensive Care and Emergency Medicine Brussels, Belgium, 30 March – 2 April 2004 Published online: 15 March 2004 These abstracts are online at http://ccforum.com/supplements/8/S1 © 2004 BioMed Central Ltd (Print ISSN 1364-8535; Online ISSN 1466-609X) P1 The conditioning of medical gases with hot water humidifiers D Chiumello, M Cressoni, C De Grandis, L Landi, M Racagni Policlinico IRCCS, Milano, Italy Critical Care 2004, 8(Suppl 1):P1 (DOI 10.1186/cc2468) During invasive mechanical ventilation due to the dryness of Table 1 medical gases is necessary to provide an adequate level of conditioning. The hot water humidifiers (HWH) heat the water, thus Results as mean ± SD allowing the water vapor to heat and humidify the medical gases. In the common HWH there is a contact between the medical gases MR 730 and the sterile water, thus increasing the risk of patient’s heated tube Dar HC MR 730 colonization and infection. Recently to avoid the condensation in the inspiratory limb of the ventilator circuit, new heated ventilator Set temperature, 35°C AH (mgH O/l) 26.7 ± 0.3* 37.4 ± 0.6 38.0 ± 0.9 circuits have been developed. In this in vitro study we evaluated 2 RH (%) 83.7 ± 1.0* 97.7 ± 1.4 93.2 ± 1.5 the efficiency (absolute/relative humidity) of three HWH: (1) a common HWH without a heated ventilator circuit (MR 730, Set temperature, 37°C † Fisher&Paykel, New Zeland), (2) the same HWH with a heated AH (mgH2O/l) 34.5 ± 1.6* 38.7 ± 2.2 43.1 ± 1.1 ventilator circuit (Mallinckrodt Dar, Italy) and (3) a new HWH (DAR RH (%) 91.8 ± 3.2 87.7 ± 7.4† 94.6 ± 0.9 HC 2000, Mallinkckrodt Dar, Italy) with a heated ventilator circuit in which the water vapor reaches the medical gases through a *P < 0.05 vs DAR HC and MR 730, †P < 0.05 vs MR 730. gorotex membrane, avoiding any direct contact between the water and gases. At a temperature of 35°C and 37°C the HWH and heated tube were evaluated. settings were maintained constant for all the study period. The measurements were taken after 60 min of continuous use. The absolute humidity (AH) and relative humidity (RH) were measured by a psychometric method. The minute ventilation, tidal At 35°C the output of the MR 730 with a heated tube was volume respiratory rate and oxygen fraction were: 5.8 ± 0.1 l/min, insufficient to provide adequate levels of conditioning, while at 740 ± 258 ml, 7.5 ± 2.6 bpm and 100%, respectively. Ventilator 37°C all the three devices were satisfactory. P2 Use of a bougie during percutaneous tracheostomy M Read University Hospital, Cardiff, UK Critical Care 2004, 8(Suppl 1):P2 (DOI 10.1186/cc2469) Airway techniques for percutaneous tracheostomy include the LMA, A bougie was used during 46. This technique does not use the Combitube, the Microlaryngeal tube and the Perforated Airway bronchoscopic control. A bougie is passed through the tracheal tube Exchanger. Routine bronchoscopy is deemed unnecessary by many, (TT) into the trachea. The TT is withdrawn until the cuff is above the including intensivists in Cardiff. Our audit database stores patient vocal cords. With the cuff fully inflated, the TT is advanced (using the characteristics, techniques and complications, in 700 tracheostomies. bougie as a guide) until the cuff impacts on the vocal cords. A gas- Table 1 aIn one case the seldinger needle also blocked by bougie material. One Complications (type) Number patient was in a hard collar. bIn one case, the seldinger needle Visible cut in bougie 2a perforated the TT cuff and the TT prevented tracheostomy cuff sealing. TT not pulled back far enough 2b In one case, the seldinger wire passed through Murphy eye of TT and Bougie in Murphy eye of TT 1c the dilation process caused the TT to advance into the trachea. The Failure to advance blue rhino 1d second passage of the dilator was done with bronchoscopic control. Bleeding 1e cCaused no problems. dPatient previous tracheostomy: serial dilator Late complication 2f technique used. eThrombocytopaenic patient. No damage seen on bronchoscopy. fInfected stoma at 5 days, pneumopericardium at 4 days. Critical Care March 2004 Vol 8 Suppl 1 24th International Symposium on Intensive Care and Emergency Medicine seal is maintained by gentle pressure on the TT keeping the cuff neutral cervical position was maintained. In 33 cases the Blue pressing on the vocal cords. During percutaneous tracheostomy the Rhino dilator and in 12 cases the Ultra-Perc (White Rhino) dilator bougie remains in the trachea. When ventilation through the was used. One case was a serial dilator (see later). tracheostomy tube (cuff inflated) is confirmed, the TT and bougie are withdrawn. Throughout the procedure, if ventilation difficulties occur, the TT can be easily re-inserted using the bougie as a guide. Conclusion The bougie for airway control for percutaneous tracheostomy was associated with zero hypoxic episodes in Results Three different bougies were used: types (number used) 46 cases. Minor bougie damage in two cases caused no problems. were Eschmann (29), size 10 Portex disposable (four) and size Other complications seen were either minor or unlikely to be due to 12 Portex disposable (13). Three patients were trauma cases: a the bougie. P3 Percutaneous dilational tracheostomy in critically ill patients: progressive vs single dilatation techniques S Zaky, K Atya Kasr Al-Eini Hospital, Cairo, Egypt Critical Care 2004, 8(Suppl 1):P3 (DOI 10.1186/cc2470) Objectives To report experience with the bedside percutaneous Results Bedside PDT was performed successfully in ICU for all dilatational tracheostomy (PDT) in critically ill patients. To compare 18 patients in a mean time of 17.5 ± 14 min (range 5–60 min). two different methods of PDT, namely progressive and single Single dilatation technique had a significantly lower operative time dilatation techniques. than the multiple dilation group (9.5 ± 6 min vs 27.5 ± 15 min, P < 0.005). Complications were significantly higher in group A Design Prospective observational study. (false passage in one, moderate bleeding in one, minor bleeding in two, conversion of the procedure to open tracheostomy in one Patients Eighteen surgical or medical ICU patients (10 male, mean patient due to isthmus bleeding). On the other hand there was only age 32.8 ± 17 years) in a tertiary university hospital requiring minor bleeding in one patient of group B. tracheostomy for airway control or prolonged mechanical ventilation. Interventions Patients were randomized to receive PDT by either Conclusion PDT is a safe and cost-effective procedure in ICU the multiple progressive dilatation method (group A, eight patients) critically ill patients. The single dilatation method is an even more or single dilatation technique (group B, 10 patients) as described rapidly performed bedside method than the progressive dilation by Ciaglia. method. P4 Percutaneous dilatational tracheostomy — a comparison of three methods: Ciaglia Blue Rhino, PercuTwist and Griggs’ Guidewire Dilation Forceps (GWDF) J Schiefner, K Magnusson, U Zaune, E Vester Evangelisches Krankenhaus, Duesseldorf, Germany Critical Care 2004, 8(Suppl 1):P4 (DOI 10.1186/cc2471) Introduction In contrast to conventional surgical tracheostomy, procedural switch to Blue Rhino. One of these cases led to percutaneous dilational tracheostomy (PDT) in different variants is significant blood loss. Pre-interventional and postinterventional spreading rapidly in intensive care units today. On two intensive values for Hb were 10 ± 1.8 g/dl and 9.9 ± 1.2 g/dl in the Blue care units — cardiological and surgical–anaesthesiological — we Rhino group, 10.4 ± 1.8 g/dl and 10.3 ± 1.9 g/dl in the performed a comparative investigation of three PDT methods in a PercuTwist, and 9.8 ± 0.8 g/dl and 9.57 ± 1.4 g/dl in the GWDF prospective randomized study with an emphasis on clinical utility group (n.s.). Oxygenation remained unchanged early after and safety. intervention with a tendency towards a better PaO2/FiO2 in the GWDF group. Three cases of cartilage fracture were recorded. Methods Thirty-one patients (age 64 ± 13 [mean ± SD]) were We saw no severe lasting desaturation episodes. We found no enrolled, PDT were performed in three groups, 10 Ciaglia Blue stomal infections and no other life-threatening events. Surgical Rhino (Cook), 10 PercuTwist (Rüsch) — a device employing a intervention was never required. Mortality in all groups was 42% screw with a hydrophilic coating and 11 GWDF — using Griggs’ with no procedure-related deaths. Thirteen patients have been specially designed dilational forceps (Portex). Duration of permanently decanulated. intervention, oxygenation parameters, blood loss and further complications peri-interventionally and postinterventionally were Conclusion The three methods investigated in this study show recorded and compared. comparable feasibility, clinical utility, lack of severe complications and margin of patient safety under the conditions of a secondary Results We found significant differences in the duration of academic teaching hospital. However, the PercuTwist method procedures: Blue Rhino 5.9 ± 3.7 min, PercuTwist 11.7 ± 9.35 min, revealed technical limitations in particular in the presence of a wide GWDF 3.3 ± 1.65 min (P < 0.02). Two PercuTwist procedures tracheo-cutaneous distance. Shortest intervention durations were proved technically difficult — insufficient penetration depth of the achieved using the GWDF. To provide evidence of relevant Percu Twist device and formation of a pre-tracheal via falsa, differences — especially regarding long-term outcome — further successful tracheostoma placement was achieved only after a comparative studies are indispensable. Available online http://ccforum.com/supplements/8/S1 P5 Optimal approach to the tracheostomy technique in critically ill patients with a short fat neck I Dor, M Croitoru, S Krimerman, S Nicola, E Sabo, E Altman Bnai Zion Medical Center, Haifa, Israel Critical Care 2004, 8(Suppl 1):P5 (DOI 10.1186/cc2472) Background and goal of study To examine and to compare our and the PCT patients (mean = 47.3 cm, median = 47 cm, experience with surgical tracheostomy (ST) and percutaneous range = 45–53 cm) (P = 0.9).