The 2025 Western Anaesthesia Symposium, our 44th, is in the Salthill Hotel, on the Promenade in Galway on April 4th and 5th 2025.

Tickets are available here
Download the Abstract Submission Form below:
The 2025 Western Anaesthesia Symposium, our 44th, is in the Salthill Hotel, on the Promenade in Galway on April 4th and 5th 2025.

Tickets are available here
Download the Abstract Submission Form below:

The Conference is in the family friendly Sligo Park Hotel – so pack up the family and head to Sligo in the Spring.
08.00 – 13.30 Fusic Echo Course (ticketed event)
Peter Moran & James Day
09.00 – 13.30 Airway Course (ticketed event)
Ciara Hanley & Brian Harte
13:30-14:30 POSTER PRESENTATIONS
Chair: Colm Keane
14.30 – 15.00 Session 1 Clinical Fellowships session
Chair: David Cosgrave
Ger Kavanagh – Regional Anaesthesia (15 mins)
Eva Corcoran – Obstetric Anaesthesai (15 mins)
Aine McCarthy – Airway/Sim (15 mins)
Eoin Cashman – Tutor/Education (15 mins)
15.00-15.30 Coffee Break
15.30 – 16.30 Session 2 Anaesthesiology Review (best papers)
Chair: Sinead Bredin
Practice Update: Best clinical papers in Anaesthesia
1. Sinead Farrell
2. Sinead Bredin
3. Colm Keane
17.00 – 18.00 Session 3
Anaesthesiology Review: Paediatrics
Chair: Mark Ross
18.00 – 19.00 Session 4: Medico-legal issues
Tom Quick, Neurosurgeon “Can you fix a nerve?” (30 mins)
Seamus Breen, Barrister “Medicine and the law- a practical perspective”(30 mins)
19.15 – 20.00 Session 5 Plenary Lecture – Brian Kinirons (45 mins)
20.30 BUFFET DINNER (Included in Registration)
8.00 – 09.00 Session 1 Case Reports – O’Beirne-Costello Medal
Chair: Michael Scully (call for abstracts)
9.15 – 10.45 Session 2: NELA: National Laparotomy Audit Group (QI methodology)
Chair: Anne Dolan
1. Margaret Coakley Anaesthesia (30 mins)
2. Mia Humphreys Geriatrician (30 mins)
3. Sarah Churchill NELA Audit lead (30 mins)
10.45 – 11.10
Coffee Break
11.10 – 12.40 Session 3: University of Galway Academic Session
Chair: John Laffey
1. Peter Doran Chair of Clinical Trials Group, University of Galway (45 mins)
2. Craig Lyons Science in Anaesthesia (45 mins)
12.45– 13.30 Session 4 Plenary Lecture
Chair: Peter Moran
James Day Oxford (45 mins)
Lunch (Included in Registration)
14.30 – 16.30 Session 5: Obstetric & Critical Care Anaesthesiology
Dave Cosgrave
Ciara Hanley
Pat Neligan
Rachel Jooste
We are delighted to announce that the 41st Western Anaesthesiology & Critical Care Symposium (WAS) is on – in person – at Glenlo Abbey Hotel, Galway, on March 25th and 26th. Because of the short timescale for organising the meeting, the meeting will feature mostly local talent – all of your controversial favorites plus some new exciting speakers. It will be a great opportunity to learn something new and catch up with a few (dozen) old friends.
Full details are HERE.
The SOLAR trial, which compared a composite outcomes in perioperative colorectal or orthopaedic patients, assigned to Lactated Ringers’ (similar to Hartmann’s) solution – over 2 week blocks over a few years (8,616), has been published this month in Anesthesiology. The median volume of fluid administered in the perioperative period was 1.9L, and, no surprise here – there was no difference in outcomes.
Here is the blurb from the abstract:
“Among 8,616 qualifying patients, 4,187 (49%) were assigned to lactated Ringer’s solution, and 4,429 (51%) were assigned to saline. Each group received a median 1.9 l of fluid. The primary composite of major complications was observed in 5.8% of lactated Ringer’s versus 6.1% of normal saline patients, with estimated average relative risk across the components of the composite of 1.16 (95% CI, 0.89 to 1.52; P = 0.261). The secondary outcome, postoperative acute kidney injury, Acute Kidney Injury Network stage I–III versus 0, occurred in 6.6% of lactated Ringer’s patients versus 6.2% of normal saline patients, with an estimated relative risk of 1.18 (99.3% CI, 0.99 to 1.41; P = 0.009, significance criterion of 0.007). Absolute differences between the treatment groups for each outcome were less than 0.5%, an amount that is not clinically meaningful.”
The two litres of Saline / LR did not cause acidosis or meaningful increase in plasma chloride concentrations at 24 hours – chloride rose in both groups initially and then fell off. If the median volume of fluid was 2L – then there was a median difference in chloride intake of 80mmol – roughly what is in half a litre of saline. There is good reason to believe that hyperchloraemic fluids (such as LR and Saline) in lowish volume (2L) don’t change acid base status, due to dilution of albumin and then clearance. It would have been really helpful to know what, if any, iv fluid was given post op and how much sodium and chloride the patients received over the 3 days of the stress response.
These results differ from the SMART-MED and SALT-ED trials – which despite extraordinarily small volumes of fluid, purported to show an increase in complications – particularly renal with saline. Presumably, critically ill and emergency room patients are at greater risk for organ dysfunction, and the additional sodium and chloride pushed a few “over the edge.”
An impressive study that shows that any anaesthesia department can do important research just by altering one component of “what we always do” every couple of weeks and then looking at outcomes from a largish cohort. It won’t change my practice, and I would dearly have liked to see the study done with plasmalyte-148 rather than LR.
Thanks for the appeal, anaesthesiawest is now reactivated.
From the “who would have guessed it” category come the idea of naloxone as an analgesic.
There have been several previous studies (see below) showing that extremely low doses of naloxone appeared to have analgesic properties, but no real explanation of how this might be possible.
The most recent interesting article is this one here, recently published in the journal of pain, showing +(-) naloxone reverses multiple models of chronic neuropathic pain in rats,
http://www.jpain.org/article/S1526-5900(12)00522-6/abstract
Ultra low dose naloxone attenuates morphine tolerance in rats
http://www.sciencedirect.com/science/article/pii/S0091305710001486
Low dose 0.25mcg/kg/hr naloxone reduces opioid consumption, nausea and vomiting in 90 abdominal hysterectomy patients.
The first article showing this was by Gan et al in 1997. They looked at 60 patients who had a PCA along with infusions of varying doses of naloxone or saline. It was designed to look for a reduction in itch and nausea but as well as finding this found the group that got the lowest dose of naloxone also had a reduction in opioid use, with equivalent pain score
Following Paul Myles’ paper in Anesthesiology in 2007 – that demonstrated bad outcomes in patients anaesthetised with nitrous oxide (click here), “experts” clamoured to demand that we stop using the stuff in our clinical practice. Their opinions were enhanced by the ENIGMA trial, that claimed increased risk of myocardial infarction in patients receiving nitrous (click here); following adjustment for the usual factors. I have been personally accused of “poisoning” my patients by continuing to administer nitrous. Hence, it was with great relief that I read this paper (click here) in this month’s anesthesia and analgesia.
Turan and Colleagues evaluated almost 50,000 patients who had noncardiac surgery at the Cleveland Clinic over a 4 year period (2005 and 2009). Of the patients that had general anesthesia, 17,00 were given N2O (45%) and 21,000 were not (55%). Of each group, 10,000 patients were propensity score-matched on 30-day mortality and a set of 8 in-hospital morbidity/mortality outcomes.
The results were surprising. Patients that were given N2O intraoperatively had decreased odds of 30-day mortality (odds ratio [OR]: 97.5% confidence interval, 0.67, 0.46–0.97; P= 0.02), compared with no nitrous. In addition, patients that received had a17% (OR: 0.83, 0.74–0.92) reduced odds of experiencing major in-hospital morbidity/mortality than non-nitrous (P < 0.001). In particular, the risk of pulmonary complications with significantly lower in patients who received nitrous.(OR, 95% Bonferroni-adjusted CI: 0.59, 0.44–0.78).
Ok – so this was a propensity score analysis induced fluke – right? In the same issue of A&A we have a second paper that analysed the POISE trial outcomes (click here). 30% of the 6000 patients in the study received nitrous – and there was NO association between the gas and adverse outcomes. A fairly biased editorial in A&A, written with the help of Paul Myles, whose group is the only one that has demonstrated bad outcomes with nitrous, dismembers the Turan paper.
Nitrous oxide has been around for 160 years. I am not aware that there is a pandemic of death and MI amongst the patients of those of us who use the stuff. In any case, I think that this paper, at the very least, suggests that the jury is still out on the subject.
Several years ago while in Galway I first came across the concept of remote ischaemic preconditioning (RIPC). This is the concept that subjecting one part of the body to a brief period of ischaemia (eg 3 cycles of 5 minutes of an arm tourniquet above systolic pressure, followed by 5 minute deflations) can protect the rest of the body from subsequent ischaemic insults.
In the past couple of years there has been an explosion of interest in this fascinating idea and some truly exciting results from initial trials (see examples below). However, as with most new areas subsequent studies have not been quite as impressive as initial results. This seems to follow the pattern of most new findings in medicine: “It’s amazing!” followed by discovery of some setback or complication, leading to “It’s awful / useless!”, and finally “It’s OK if used in the right way for the right patients”.
The background to the discovery of ischaemic preconditioning comes from interventional cardiologists, who noted that patients who had “stuttering” myocardial infarctions seemed to do better than those who just had a single large MI.
Further work on anaesthetised dogs by Murry in the mid 1980s showed that 4 episodes of 5 minutes of coronary artery ligation before a 40 minute ligation reduced infarct size to a quarter of the size seen in the control group.
http://circ.ahajournals.org/content/74/5/1124.abstract
The ischaemia seems to produce 2 periods of protection, an early window out to 6 hours and a late window out to around 72 hours.
Since then studies have emerged showing that a protective effect occurs even if the organ rendered initially ischaemic is not the organ which suffers the final insult – in fact it appears that arm or leg ischaemia can protect the heart, lungs and kidneys. This is termed remote ischaemic preconditioning. What I like about this technique is that most attempts to protect the heart so far have been drug based and very one dimensional, relying on say beta blockers or statins to target a certain receptor. This technique harnesses an intrinsic protective mechanism, rather than on us trying to pick a single mediator to convey benefit, the ischaemic insult releases a range of known and unknown protective substances. It would be very difficult to replicate this complex soup with a drug. In addition this is almost risk free and should avoid the nasty surprises such as the finding of increased stroke and mortality found in the POISE trial which has halted the enthusiasm for beta blockers.
The study which first kicked off interest in this area was from 2007 by Hausenloy et al. 57 CABG patients were randomising to RIPC via an arm tourniquet and were found to have a 43% reduction in post operative troponin release.http://www.sciencedirect.com/science/article/pii/S0140673607612963
Also in 2007 a RCT by Ziad in 82 patients having open AAA repair showed that 2 cycles of 10 minutes of common iliac artery clamping prior to aortic crossclamping reduced MI from 27% to 5% and renal impairment from 30% to 7% compared to control.
http://circ.ahajournals.org/content/116/11_suppl/I-98.short
A recent meta-analysis of RIPC for CABG incorporating 10 studies and 693 patients showed a reduction in troponin release, however the studies with better blinding showed a smaller effect size, suggesting the benefit may be lower than original trials suggested.
Another meta-analysis of 17 cardiac and vascular trials showed a reduction in markers of myocardial injury, a reduction in MI (7.9% vs 13%) and (for AAA repair) a reduction in renal injury. There was no evidence of publication bias.
http://www.ncbi.nlm.nih.gov/pubmed/22294530
RIPC also appears to have some effect in preventing contrast nephropathy in 100 patients with renal impairment having coronary angiography, with renal injury rates of 40% in control vs 12% in RIPC. This has implications for ICU patients requiring contrast CT scans.
http://circ.ahajournals.org/content/early/2012/06/25/CIRCULATIONAHA.112.096370.short
Finally, a study just out in Anesthesiology looked at 62 patients having elective infrarenal AAA repair and found an improved a/A ratio and improved markers in intestinal injury in the RIPC group compared with control
http://europepmc.org/abstract/MED/23353795/reload=0;jsessionid=K8cOgeieWh27t1SMmKZ5.2
Of interest, a dose finding study is currently underway in Australia and NZ looking at defining the optimum “dose” of RIPC for best benefit.
There are some other interesting implications of RIPC. There has been a recent trend to orthopaedic surgeons doing knee replacements without tourniquets. Could this “improvement” in fact lead to worsening post-op outcomes due the loss of protection from myocardial ischaemia in the highest risk 72 hours post operatively, the “late” RIPC protection time?
In summary RIPC offers the latest hope in achieving the holy grail of anaesthesia- reducing post operative cardiovascular complications. The biggest advantage of RIPC over previous attempts, such as beta blockers, widespread preoperative revascularisation and regional techniques is simplicity and lack of harm. It’s hard to envisage anything bad coming from some brief cycles of tourniquet inflation and as the Lancet summarised it, it might mean “an arm and a leg can save the heart”.
The most recent iteration of Surviving Sepsis has been published in Critical Care Medicine and Intensive Care Medicine. The can be downloaded here (please click).
Below is a summary of the Guidelines:
A. Initial Resuscitation
1. Protocolized, quantitative resuscitation of patients with sepsis-induced tissue hypoperfusion (defined in this document as hypotension persisting after initial fluid challenge or blood lactate concentration ≥ 4 mmol/L).
Goals during the first 6 hrs of resuscitation:
a) Central venous pressure 8–12 mm Hg
b) Mean arterial pressure (MAP) ≥ 65 mm Hg c) Urine output ≥ 0.5 mL/kg/hr d) Central venous (superior vena cava) or mixed venous oxygen saturation 70% or 65%, respectively (grade 1C).
c). In patients with elevated lactate levels targeting resuscitation to normalize lactate (grade 2C).
B. Screening for Sepsis and Performance Improvement
1. Routine screening of potentially infected seriously ill patients for severe sepsis to allow earlier implementation of therapy (grade 1C).
2. Hospital–based performance improvement efforts in severe sepsis (UG).
C. Diagnosis
1. Cultures as clinically appropriate before antimicrobial therapy if no significant delay (> 45 mins) in the start of antimicrobial(s) (grade 1C). At least 2 sets of blood cultures (both aerobic and anaerobic bottles) be obtained before antimicrobial therapy with at least 1 drawn percutaneously and 1 drawn through each vascular access device, unless the device was recently (<48 hrs) inserted (grade 1C).
2. Use of the 1,3 beta-D-glucan assay (grade 2B), mannan and anti-mannan antibody assays (2C), if available, and invasive candidiasis is in differential diagnosis of cause of infection.
3. Imaging studies performed promptly to confirm a potential source of infection (UG).
D. Antimicrobial Therapy
1. Administration of effective intravenous antimicrobials within the first hour of recognition of septic shock (grade 1B) and severe sepsis without septic shock (grade 1C) as the goal of therapy.
2a. Initial empiric anti-infective therapy of one or more drugs that have activity against all likely pathogens (bacterial and/or fungal or viral) and that penetrate in adequate concentrations into tissues presumed to be the source of sepsis (grade 1B).
2b. Antimicrobial regimen should be reassessed daily for potential de-escalation (grade 1B).
3. Use of low procalcitonin levels or similar biomarkers (e.g. CRP) to assist the clinician in the discontinuation of empiric antibiotics in patients who initially appeared septic, but have no subsequent evidence of infection (grade 2C).
4a. Combination empirical therapy for neutropenic patients with severe sepsis (grade 2B) and for patients with difficult-to-treat, multidrug-resistant bacterial pathogens such as Acinetobacter and Pseudomonas spp. (grade 2B). For patients with severe infections
associated with respiratory failure and septic shock, combination therapy with an extended spectrum beta-lactam and either an aminoglycoside or a fluoroquinolone is for P. aeruginosa bacteremia (grade 2B). A combination of beta-lactam and macrolide for
patients with septic shock from bacteremic Streptococcus pneumoniae infections (grade 2B).
4b. Empiric combination therapy should not be administered for more than 3–5 days. De-escalation to the most appropriate single therapy should be performed as soon as the susceptibility profile is known (grade 2B).
5. Duration of therapy typically 7–10 days; longer courses may be appropriate in patients who have a slow clinical response, undrainable foci of infection, bacteremia with S. aureus; some fungal and viral infections or immunologic deficiencies, including neutropenia (grade 2C).
6. Antiviral therapy initiated as early as possible in patients with severe sepsis or septic shock of viral origin (grade 2C).
7. Antimicrobial agents should not be used in patients with severe inflammatory states determined to be of noninfectious cause (UG).
E. Source Control
1. A specific anatomical diagnosis of infection requiring consideration for emergent source control be sought and diagnosed or excluded as rapidly as possible, and intervention be undertaken for source control within the first 12 hr after the diagnosis is made, if feasible (grade 1C).
2. When infected peripancreatic necrosis is identified as a potential source of infection, definitive intervention is best delayed until adequate demarcation of viable and nonviable tissues has occurred (grade 2B).
3. When source control in a severely septic patient is required, the effective intervention associated with the least physiologic insult should be used (eg, percutaneous rather than surgical drainage of an abscess) (UG).
4. If intravascular access devices are a possible source of severe sepsis or septic shock, they should be removed promptly after other vascular access has been established (UG).
F. Infection Prevention
1a. Selective oral decontamination and selective digestive decontamination should be introduced and investigated as a method to reduce the incidence of ventilator-associated pneumonia; this infection control measure can then be instituted in health care settings and regions where this methodology is found to be effective (grade 2B).
1b. Oral chlorhexidine gluconate be used as a form of oropharyngeal decontamination to reduce the risk of ventilator-associated pneumonia in ICU patients with severe sepsis (grade 2B).
G. Fluid Therapy of Severe Sepsis
1. Crystalloids as the initial fluid of choice in the resuscitation of severe sepsis and septic shock (grade 1B).
2. Against the use of hydroxyethyl starches for fluid resuscitation of severe sepsis and septic shock (grade 1B).
3. Albumin in the fluid resuscitation of severe sepsis and septic shock when patients require substantial amounts of crystalloids (grade 2C).
4. Initial fluid challenge in patients with sepsis-induced tissue hypoperfusion with suspicion of hypovolemia to achieve a minimum of 30 mL/kg of crystalloids (a portion of this may be albumin equivalent). More rapid administration and greater amounts of fluid may be needed in some patients (grade 1C).
5. Fluid challenge technique be applied wherein fluid administration is continued as long as there is hemodynamic improvement either based on dynamic (eg, change in pulse pressure, stroke volume variation) or static (eg, arterial pressure, heart rate) variables (UG).
H. Vasopressors
1. Vasopressor therapy initially to target a mean arterial pressure (MAP) of 65 mm Hg (grade 1C).
2. Norepinephrine as the first choice vasopressor (grade 1B).
3. Epinephrine (added to and potentially substituted for norepinephrine) when an additional agent is needed to maintain adequate blood pressure (grade 2B).
4. Vasopressin 0.03 units/minute can be added to norepinephrine (NE) with intent of either raising MAP or decreasing NE dosage (UG).
5. Low dose vasopressin is not recommended as the single initial vasopressor for treatment of sepsis-induced hypotension and vasopressin doses higher than 0.03-0.04 units/minute should be reserved for salvage therapy (failure to achieve adequate MAP with other vasopressor agents) (UG).
6. Dopamine as an alternative vasopressor agent to norepinephrine only in highly selected patients (eg, patients with low risk of tachyarrhythmias and absolute or relative bradycardia) (grade 2C).
7. Phenylephrine is not recommended in the treatment of septic shock except in circumstances where (a) norepinephrine is associated with serious arrhythmias,
(b) cardiac output is known to be high and blood pressure persistently low or (c) as salvage therapy when combined inotrope/vasopressor drugs and low dose vasopressin have failed to achieve MAP target (grade 1C).
8. Low-dose dopamine should not be used for renal protection (grade 1A).
9. All patients requiring vasopressors have an arterial catheter placed as soon as practical if resources are available (UG).
I. Inotropic Therapy
1. A trial of dobutamine infusion up to 20 micrograms/kg/min be administered or added to vasopressor (if in use) in the presence of (a) myocardial dysfunction as suggested by elevated cardiac filling pressures and low cardiac output, or (b) ongoing signs of
hypoperfusion, despite achieving adequate intravascular volume and adequate MAP (grade 1C).
2. Not using a strategy to increase cardiac index to predetermined supranormal levels (grade 1B).
J. Corticosteroids
1. Not using intravenous hydrocortisone to treat adult septic shock patients if adequate fluid resuscitation and vasopressor therapy are able to restore hemodynamic stability (see goals for Initial Resuscitation). In case this is not achievable, we suggest intravenous hydrocortisone alone at a dose of 200 mg per day (grade 2C).
2. Not using the ACTH stimulation test to identify adults with septic shock who should receive hydrocortisone (grade 2B).
3. In treated patients hydrocortisone tapered when vasopressors are no longer required (grade 2D).
4. Corticosteroids not be administered for the treatment of sepsis in the absence of shock (grade 1D).
5. When hydrocortisone is given, use continuous flow (grade 2D).
K. Blood Product Administration
1. Once tissue hypoperfusion has resolved and in the absence of extenuating circumstances, such as myocardial ischemia, severe hypoxemia, acute hemorrhage, or ischemic heart disease, we recommend that red blood cell transfusion occur only when hemoglobin concentration decreases to <7.0 g/dL to target a hemoglobin concentration of 7.0 –9.0 g/dL in adults (grade 1B).
2. Not using erythropoietin as a specific treatment of anemia associated with severe sepsis (grade 1B).
3. Fresh frozen plasma not be used to correct laboratory clotting abnormalities in the absence of bleeding or planned invasive procedures (grade 2D).
4. Not using antithrombin for the treatment of severe sepsis and septic shock (grade 1B).
5. In patients with severe sepsis, administer platelets prophylactically when counts are <10,000/mm3 (10 x 109/L) in the absence of apparent bleeding. We suggest prophylactic platelet transfusion when counts are < 20,000/mm3 (20 x 109/L) if the patient has a significant risk of bleeding. Higher platelet counts (≥50,000/mm3 [50 x 109/L]) are advised for active bleeding, surgery, or invasive procedures (grade 2D).
L. Immunoglobulins
1. Not using intravenous immunoglobulins in adult patients with severe sepsis or septic shock (grade 2B).
M. Selenium
1. Not using intravenous selenium for the treatment of severe sepsis (grade 2C).
N. History of Recommendations Regarding Use of rhAPC
A history of the evolution of SSC recommendations as to rhAPC (no longer available) is provided.
O. Mechanical Ventilation of Sepsis-Induced ARDS
1. Target a tidal volume of 6 mL/kg predicted body weight in patients with sepsis-induced ARDS (grade 1A vs. 12 mL/kg).
2. Plateau pressures be measured in patients with ARDS and initial upper limit goal for plateau pressures in a passively inflated lung be ≤30 cm H2O (grade 1B).
3. Positive end-expiratory pressure (PEEP) be applied to avoid alveolar collapse at end expiration (atelectotrauma) (grade 1B).
4. Strategies based on higher rather than lower levels of PEEP be used for patients with sepsis-induced moderate or severe ARDS (grade 2C).
5. Recruitment maneuvers be used in sepsis patients with severe refractory hypoxemia (grade 2C).
6. Prone positioning be used in sepsis-induced ARDS patients with a Pao2/Fio2 ratio ≤100 mm Hg in facilities that have experience with such practices (grade 2B).
7. That mechanically ventilated sepsis patients be maintained with the head of the bed elevated to 30-45 degrees to limit aspiration risk and to prevent the development of ventilator-associated pneumonia (grade 1B).
8. That noninvasive mask ventilation (NIV) be used in that minority of sepsis-induced ARDS patients in whom the benefits of NIV have been carefully considered and are thought to outweigh the risks (grade 2B).
9. That a weaning protocol be in place and that mechanically ventilated patients with severe sepsis undergo spontaneous breathing trials regularly to evaluate the ability to discontinue mechanical ventilation when they satisfy the following criteria:
a) arousable; b) hemodynamically stable (without vasopressor agents); c) no new potentially serious conditions; d) low ventilatory and end-expiratory pressure requirements; and e) low Fio2 requirements which can be met safely delivered with a face mask or nasal cannula. If the spontaneous breathing trial is successful, consideration should be given for extubation (grade 1A).
10. Against the routine use of the pulmonary artery catheter for patients with sepsis induced ARDS (grade 1A).
11. A conservative rather than liberal fluid strategy for patients with established sepsis-induced ARDS who do not have evidence of tissue hypoperfusion (grade 1C).
12. In the absence of specific indications such as bronchospasm, not using beta 2-agonists for treatment of sepsis-induced ARDS (grade 1B).
P. Sedation, Analgesia, and Neuromuscular Blockade in Sepsis
1. Continuous or intermittent sedation be minimized in mechanically ventilated sepsis patients, targeting specific titration endpoints (grade 1B).
2. Neuromuscular blocking agents (NMBAs) be avoided if possible in the septic patient without ARDS due to the risk of prolonged neuromuscular blockade following discontinuation. If NMBAs must be maintained, either intermittent bolus as
required or continuous infusion with train-of-four monitoring of the depth of blockade should be used (grade 1C). 3. A short course of NMBA of not greater than 48 hours for patients with early sepsis-induced ARDS and a Pao2/Fio2 < 150 mm Hg (grade 2C).
Q. Glucose Control
1. A protocolized approach to blood glucose management in ICU patients with severe sepsis commencing insulin dosing when 2 consecutive blood glucose levels are >180 mg/dL. This protocolized approach should target an upper blood glucose ≤180 mg/dL rather than an upper target blood glucose ≤ 110 mg/dL (grade 1A).
2. Blood glucose values be monitored every 1–2 hrs until glucose values and insulin infusion rates are stable and then every 4 hrs thereafter (grade 1C).
3. Glucose levels obtained with point-of-care testing of capillary blood be interpreted with caution, as such measurements may not accurately estimate arterial blood or plasma glucose values (UG).
R. Renal Replacement Therapy
1. Continuous renal replacement therapies and intermittent hemodialysis are equivalent in patients with severe sepsis and acute renal failure (grade 2B).
2. Use continuous therapies to facilitate management of fluid balance in hemodynamically unstable septic patients (grade 2D).
S. Sodium Bicarbonate Therapy
1. Not using sodium bicarbonate therapy for the purpose of improving hemodynamics or reducing vasopressor requirements in patients with hypoperfusion-induced lactic acidemia with pH ≥7.15 (grade 2B).
T. Deep Vein Thrombosis Prophylaxis
1. Patients with severe sepsis receive daily pharmacoprophylaxis against venous thromboembolism (VTE) (grade 1B). This should be accomplished with daily subcutaneous low-molecular weight heparin (LMWH) (grade 1B versus twice daily UFH, grade 2C versus three times daily UFH). If creatinine clearance is <30 mL/min, use dalteparin (grade 1A) or another form of LMWH that has a low degree of renal metabolism (grade 2C) or UFH (grade 1A).
2. Patients with severe sepsis be treated with a combination of pharmacologic therapy and intermittent pneumatic compression devices whenever possible (grade 2C).
3. Septic patients who have a contraindication for heparin use (eg, thrombocytopenia, severe coagulopathy, active bleeding, recent intracerebral hemorrhage) not receive pharmacoprophylaxis (grade 1B), but receive mechanical prophylactic treatment, such
as graduated compression stockings or intermittent compression devices (grade 2C), unless contraindicated. When the risk decreases start pharmacoprophylaxis (grade 2C).
U. Stress Ulcer Prophylaxis
1. Stress ulcer prophylaxis using H2 blocker or proton pump inhibitor be given to patients with severe sepsis/septic shock who have bleeding risk factors (grade 1B).
2. When stress ulcer prophylaxis is used, proton pump inhibitors rather than H2RA (grade 2D)
3. Patients without risk factors do not receive prophylaxis (grade 2B).
V. Nutrition
1. Administer oral or enteral (if necessary) feedings, as tolerated, rather than either complete fasting or provision of only intravenous glucose within the first 48 hours after a diagnosis of severe sepsis/septic shock (grade 2C).
2. Avoid mandatory full caloric feeding in the first week but rather suggest low dose feeding (eg, up to 500 calories per day), advancing only as tolerated (grade 2B).
3. Use intravenous glucose and enteral nutrition rather than total parenteral nutrition (TPN) alone or parenteral nutrition in conjunction with enteral feeding in the first 7 days after a diagnosis of severe sepsis/septic shock (grade 2B).
4. Use nutrition with no specific immunomodulating supplementation rather than nutrition providing specific immunomodulating supplementation in patients with severe sepsis (grade 2C).
W. Setting Goals of Care
1. Discuss goals of care and prognosis with patients and families (grade 1B).
2. Incorporate goals of care into treatment and end-of-life care planning, utilizing palliative care principles where appropriate (grade 1B).
3. Address goals of care as early as feasible, but no later than within 72 hours of ICU admission (grade 2C).
Source: Dellinger RP, Levy MM, Rhodes A, et al: Surviving Sepsis Campaign: International guidelines for management of severe sepsis and septic shock: 2012. Crit Care Med. 2013; 41:580-637
Our ICUs are crowded by patients that are slow to liberate from mechanical ventilation. In North America, such patients are often transferred to long term mechanical ventilation facilities (LTAC) – where they are weaned to liberation. There are many strategies for weaning tracheostomised patients from mechanical ventilation – a progressive reduction in pressure support, intermittent tracheal mask (trach collar) trials, external CPAP etc.
Martin Tobin has, for many years, questioned the now conventional wisdom of progressive pressure support weans, and in this weeks JAMA his group have published a paper comparing Volume Assist Control Ventilation with intermittent tracheal mask trials to progressive pressure support weaning. The patients in the pressure support group (PSG) started, if they were able to tolerate it, pressure support ventilation at 14cmH2O. Tolerance to wean was checked every 6 hours, and 2cmH2O decrements of PS were applied up to a maximum of 6cmH2O per day. Once the pressure support reached 6cmH2O, a 5 day vent liberation process began. In the tracheal mask group (TMG), patients were put on tracheal mask for up to 12 hours per day for 2 days (then back on assist control) and on day 3 started on the 5 day vent liberation programme.
The primary outcome was weaning duration, defined from the first day of randomization to the day the patient was successfully weaned. Weaning was considered successful when patients breathed without ventilator assistance for at least 5 days. If the patients had not liberated by day 45, this was considered “failure to wean.”
Three hundred and twelve patients were randomized, of which one third died while in the study (equal numbers each group). Among the entire group of randomized patients (n = 312), median weaning time was shorter in TMG versus PSG: 15 days (IQR, 8-25) vs 19 days (IQR, 12-31), P = .004.. Among patients who completed the study (n = 194), median weaning time was shorter in TMG vs PSG: 13 days (IQR, 8-30) vs 19 days (12-43), P = .006.
Weaning time had no effect on survival at 6 and 12 months.
Impression: this article suggests that weaning patients using decrements of pressure support is not aggressive enough and that weaning in more likely to be successful with unassisted tracheal mask. Although, unsurprisingly, this had no effect on survival, a 6 day reduction in ventilator times translates into considerable resource savings – particularly with ICU/HDU beds are very scarce (as in our hospitals). Whether or not patients should be weaned from assist-control or high levels of pressure support appear moot: I doubt that it makes a difference. I continue to see any value for using external CPAP through a t-piece as a vent liberation process: there is not a shred of supportive evidence.