Charles W Sheppard MD Medical Director Mercy Life Line Mercy Kids Transport Springfield MO net
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1 Charles W Sheppard MD Medical Director Mercy Life Line Mercy Kids Transport Springfield MO Charles.Sheppard@mercy. net
2 No Conflicts I have no interest in Anything discussed As far as I know there are no labels to be off of in this talk except push dose pressors
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7 Not deal with failed airway Not deal with tube in wrong hole Discuss the physiological difficult airway Deal with the celebration after success Immediate complications Slightly later complications Prevent late complications
8 Anatomically difficult airway
9 The physiologically difficult airway Everyone familiar with the anatomically difficult airway Should recognize the physiologically difficult airway Hypotensive Hypoxic Acidotic Easy to kill with intubation so plan accordingly
10 65 y/o COPD patient fever and change in character and color of sputum. Multiple home breathing treatments have not worked called 911 Pale mottled diaphoretic skin hot to touch. Very little air movement, Rales and ronchi everywhere. Minimal response to verbal stimuli VS 180/110, P 130, RR 35 Oh yes on 6L SAO2 = 78%
11 Multiple attempts Desaturation Hypotension Acidosis/alkalosis
12 Complications Morbidity/mortality increases with each attempts. Sakles showed (2004) complications increased from 14% (first attempt) to 71% by 4 th attempt Actually increases dramatically after first attempt (Braude) How to minimize attempts Position Remove collars, ELM etc oxygen
13 Oxygen reservoir? Already hypoxic Preoxygenate Non Rebreather 15 l/m? Delayed Sequence Intubation? Sit upright?
14 Normal patient breathing room air (PaO ) desaturation sec. Normal patient breathing 100% ( reservoir full) desaturation 8 min Faster in obese 2.7 min, moderately sick people 5 min, kids faster younger (smaller) Goal of RSI is to get maximum reservoir of Oxygen BEFORE Intubation.
15 Anesthesia circuit 15 l/m FIO2=90-100% non rebreather 15 l/m FIO2=60-70% Non rebreather l/m FIO2=90% Add NC at 15 L over 90% Holding ambu bag = room air (21%)
16 Lane et al Anaesthesia 2005 Compared preoxegenation in supine vs 20 deg head up. Gave paralytic and measured time from 100%-95% Head up 386 sec Control 283 sec Altermatt Brit J Anaesth 2005 Obese patient (BMI 35) 25 deg head up SpO2 100%-90%. 214 sec vs 162 sec Boyce et al Obes Surg 2003 Reverse trendelenburg (30 deg head up) similar results.
17 Apneic oxygenation Movement of oxygen and CO2 cause alveolar O2 pressure to be negative Causes oxygen to passively move into alveoli Optimal circumstances oxygenation up to 100 min without breathing (will get severely hypercarbic) Taha et al anaesthesia 2006 no desats 6 min at 5 L/m NC control 3.65 min Ramachandran J Clin Anesth 2010 obese patients 5 l/m >95% 5.29 vs 3.49 min
18 Baillard et al Am J Resp Crit Care 2006 ICU patients on NIPPV 98% SpO2 vs 93% preintubation During intubation 93% vs 81% 12 control vs 2 NIPPV group dropped to <81% Multiple other studies (not critically ill however) show similar results
19 Use of medications and BVM or NIV as a bridge to intubation. Sedation (propofol, etomidate, etc) Better Ketamine, dexmetetomidine CPAP Intubate
20 Movement of oxygen and CO2 cause alveolar O2 pressure to be negative Causes oxygen to passively move into alveoli Optimal circumstances oxygenation up to 100 min without breathing (will get severely hypercarbic) Taha et al anaesthesia 2006 no desats 6 min at 5 L/m NC control 3.65 min Ramachandran J Clin Anesth 2010 obese patients 5 l/m >95% 5.29 vs 3.49 min
21 2 studies suggest time to desaturation is shorter with Succinylcholine than with rocuronium Taha Anaesthesia 2010 Tang Acta Anaesthesiol Scand 2011 At a dose of 1.2 mg/kg Rocuronium gives identical intubating conditions to Succinylcholine
22 Read Weingart and Levitan Ann EM March 2012 for review. Crank oxygen all the way up nasal cannula under mask Tight fitting mask Keep head of bed up Us NIPPV Consider DSI Keep oxygen on while intubating Consider Rocuronium over Succinylcholine
23 Sympathetic drive Hypovolemia Increased intrathoracic pressure Medications we use
24 Preload with fluid ml NS Have atropine/phenylephrine/ epinephrine ready Push-dose pressors?
25 Epinephrine Syringe with 9 ml NS draw up 100 mcg (0.1mg) cardiac epinephrine = 10 mcg/ml Inject 0.5-2ml q 2-5 min for pressure control Phenylephrine 1 ml phenylephrine from vial (10 mg) Inject in 100 ml NS bag = 100 mcg/ml Inject ml q 2-5 min for pressure
26 Acidosis/alkalosis Dynamic hyperinflation Tension pneumothorax Bronchorrhea
27 DKA? Sepsis? Other acidosis? (salicylate toxicity) BE VERY CAREFUL ABOUT VENTILATION
28 28 y/o female called for respiratory distress unable to give any real history friend says been sick a couple of days worse today doesn t know any of patient s medical history. BP 150/98 P 130 NSR, RR 35 SAO2 95% Intubated to control Resp Vent setting RR 16 Appropriate TV Short time later
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30 DKA Ph before intubation 6.90 with PCO2 10 K6.8 After PCO2 35 Ph 6.75 or so with appropriate shift in K
31 Try to match preintubation ETCO2. Avoid trying to normalize parameters of ventilation
32 Problem is can t exhale Intubation makes that worse Be careful
33 Vent settings to start TV 6 ml/kg IBW RR PEEP of 8-12 High inspiratory flow rate Ignore peak pressure Plateau pressure < 35 Ignore ETCO2 SAO2 goal 88-92% Treat hypoxia first with increasing PEEP FiO2 second
34 COPD, Asthma, Bronchial obstruction/spasm Excessive TV Don t allow time to exhale Excessive PEEP
35 Increasing thoracic pressure Decreasing venous return Increasing difficulty ventilating Confused with Tension Pneumothorax
36 Step one Disconnect the ventilator Step two wait listen for prolonged exhalation Step three push on chest to force exhalation.
37 Bring out the needle/chest tube
38 BV ventilation is not accurate Use right numbers Way better
39 ARDS net only real data 6-8 ml/kg IDEAL BODY WEIGHT
40 IBW kg= (Height in inches-60) IBW kg = (Ht in cm-152.4) Example 5 ft tall IBW=50 kg 50x7ml/kg=350 ml tidal volume Example 6 ft tall x(72-60)= x7=546 ml tidal volume
41 Example: Ht = cm IBW = ( )=50kg TV =7X50=350 ml Example 2: Ht = cm IBW= ( )= (30.5)=79.3kg TV= 7X79.3=555
42 Use ulnar length to get height Much easier Appears way more accurate than estimating
43 Ulnar length Male<65 ht inch Male<65 TV Male >65 Ht inches Male >65 TV Female <65 Ht inches Female <65 TV Female >65 Ht inches Female >65 TV Ulnar length Male <65 Ht inches Male < 65 TV Male >65 Ht inches Male > 65 TV Female <65 Ht Inches Female < 65 TV Female >65 Ht Inches Female >65 TV
44 ARDS net only real data 6-8 ml/kg IDEAL BODY WEIGHT Plateau pressures Mean Pulmonary Pressures Peak pressure
45 VAP Aspiration Secondary lung injury Hyperoxia Delirium/death
46 Ventilator Associated Pneumonia Most common life threatening complication Prolonged hospital stays Added cost to patient/system CMS quality measure on your web site
47 Avoid aspiration (RSI) prolonged attempts Keep head of patient elevated Empty stomach (OG/NG) Keep mouth empty (suction special ET tubes) Keep mouth clean/sterile use swabs If you suction ET tube use sterile technique.
48 Ventilator Induced Lung Injury VILI Barotrauma Atelectotrauma Oxygen toxicity Fluid overload
49 Excessive volume Excessive pressures
50 Repetitive collapse and opening snap openings PEEP
51 Start with 100% Dial down as fast as possible Unless head injury or myocardial ischemia 88-92% is goal. More and more evidence bad for injured brains and COPD maybe heart
52 Post ROSC? JAMA 2010 If patient was hyperoxic with a pa02 >300, they did worse than the patient with a pao2 <60. COPD patients? BMJ patients with presumed COPD exacerbations requiring EMS transport to the hospital that were placed into two groups; one group received high-- flow oxygenation and the other titrated oxygenation to maintain O2 sats between %. The high-- flow oxygenation group had a mortality rate of 9% compared to 4% for the titrated oxygenation.
53 I know I know I just said preload them but Be careful after that Don t chase other causes with fluids Use common sense
54 Being intubated is painful Most intubated patients complain of pain Pain is bad for you Always, Always, Always treat pain first Try to use pain medications first and then add sedatives and avoid paralytics if possible ARDS net data indicates prolonged use of paralytics is associated with increased difficulty weaning the patient.
55 Fentanyl drip at 1-1.5mcg/kg/hr then bolus micrograms until comfortable then add minimal sedation as needed. Propofol, dexmetetomidine best. Hemodynamic instability ketamine
56 Early Intensive Care Sedation Predicts Long-Term Mortality in Ventilated Critically Ill Patients Yahya Shehabi et al Am J Respir Crit Care Med 2012 Conclusion: Deep sedation first 48 hrs assoc with increased LOS and Mortality. 251 Critically ill patients Deep sedation in first 4 hrs independent predictor of: Time to Extubation Hospital death 180 day mortality
57 Associated with increased delirium, LOS, and maybe mortality. Benzodiazepine Versus Nonbenzodiazepine-Based Sedation for Mechanically Ventilated, Critically Ill Adults: A Systematic Review and Meta-Analysis of Randomized Trials Crit Care Med trials 1235 pts Conclusion non benzo assoc w 1.62 less days LOS 1.9 less vent days No diff delirium mortality
58 Treat pain first and aggressively Use opiates first line Avoid Benzos use other sedatives Use validated pain and sedation scales.
59 Remember life begins after intubation Prevent desaturation Prepare for (better yet prevent) hypotension Use the ventilator whenever possible Use the right settings Give pain medications Avoid excessive oxygen Protect the patient with elevation, suction, swabs and empty stomach.
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