Peri-operative management of the obese surgical patient 2015: Association of Anaesthetists of Great Britain and Ireland Society for Obesity and Bariatric Anaesthesia

Anaesthesia

Volumn 70, Issue 7, 2015, Pages 859-876

  Nightingale, C E ^a   Margarson, M P ^a   Shearer, E ^a   Redman, J W ^a   Lucas, D N ^b   Cousins, J M ^a   Fox, W T A ^a   Kennedy, N J ^a   Venn, P J ^c   Skues, M ^d   Gabbott, D ^e   Misra, U ^b   Pandit, J J ^g   Popat, M T ^f   Griffiths, R ^g  

^a Society for Obesity and Bariatric Anaesthesia   (United Kingdom)

^b Obstetric Anaesthetists' Association   (United Kingdom)

^c ROYAL COLLEGE OF ANAESTHETISTS   (United Kingdom)

^d British Association of Day Surgery   (United Kingdom)

^e RESUSCITATION COUNCIL UK   (United Kingdom)

^f Difficult Airway Society   (United Kingdom)

^g Association of Anaesthetists of Great Britain and Ireland   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

AIRWAY; BARIATRIC SURGERY; BODY FAT DISTRIBUTION; EMERGENCY SURGERY; GASTRIC BANDING; HUMAN; IRELAND; MEDICAL SOCIETY; OBESITY; PERIOPERATIVE PERIOD; PEROPERATIVE CARE; POSTANESTHESIA CARE; POSTOPERATIVE CARE; PRACTICE GUIDELINE; REGIONAL ANESTHESIA; RESUSCITATION; REVIEW; RHABDOMYOLYSIS; SEDATION; SLEEP DISORDERED BREATHING; SURGICAL PATIENT; TREATMENT PLANNING; UNITED KINGDOM; ANESTHESIA; ANESTHESIOLOGY; BARIATRICS; FEMALE; MALE; PROCEDURES;

ANESTHESIA; ANESTHESIOLOGY; BARIATRIC MEDICINE; FEMALE; GREAT BRITAIN; HUMANS; IRELAND; MALE; OBESITY; PERIOPERATIVE CARE; SOCIETIES, MEDICAL;

EID: 84930865828     PISSN: 00032409     EISSN: 13652044     Source Type: Journal    
DOI: 10.1111/anae.13101     Document Type: Review

References (113)

1. Association of Anaesthetists of Great Britain and Ireland. Peri-operative Management of the Morbidly Obese Patient. London: Association of Anaesthetists of Great Britain and Ireland, 2007.
2. Bellamy MC, Margarson MP,. Designing intelligent anesthesia for a changing patient demographic: a consensus statement to provide guidance for specialist and non-specialist anesthetists written by members of and endorsed by the Society for Obesity and Bariatric Anaesthesia (SOBA). Perioperative Medicine 2013; 2: 12.
3. Modder J, Fitzsimons KJ,. CMACE/RCOG Joint Guideline: Management of Women with Obesity in Pregnancy. London: Centre for Maternal and Child Enquiries and the Royal College of Obstetricians and Gynaecologists, 2010.
4. Public Health England. Measurement of Obesity. 2014. http://www.noo.org.uk/NOO-about-obesity/measurement (accessed 08/01/2015).
5. Health and Social Care Information Centre. Statistics on Obesity, Physical Activity and Diet: England, 2013. Leeds: Health and Social Care Information Centre, 2013.
6. National Obesity Forum. State of the nation's waistline-obesity in the UK: analysis and expectations. 2014. http://www.nationalobesityforum.org.uk/media/PDFs/StateOfTheNationsWaistlineObesityintheUKAnalysisandExpectations.pdf (accessed 08/01/2015).
7. Kopelman P, Jebb SA, Butland B,. Executive summary: foresight "Tackling Obesities: Future Choices" project. Obesity Reviews 2007; 8 (Suppl. 1): vi-ix.
8. Kissebah AH,. Intra-abdominal fat: is it a major factor in developing diabetes and coronary artery disease? Diabetes Research and Clinical Practice 1996; 30 (Suppl. 1): S25-S30.
9. Ball J, McAnulty G,. Ignoring our evolution: the 'pandemic' of over-nutrition. Not simply a metabolic syndrome? Anaesthesia 2014; 69: 203-7.
10. Glance LG, Wissler R, Mukamel DB, et al., Perioperative outcomes among patients with the modified metabolic syndrome who are undergoing noncardiac surgery. Anesthesiology 2010; 113: 859-72.
11. Schneider HJ, Glaesmer H, Klotsche J, et al., Accuracy of anthropometric indicators of obesity to predict cardiovascular risk. Journal of Clinical Endocrinology and Metabolism 2007; 92: 589-94.
12. Pelosi P, Croci M, Ravagnan I, et al., The effects of body mass on lung volumes, respiratory mechanics, and gas exchange during general anesthesia. Anesthesia and Analgesia 1998; 87: 654-60.
13. Sikka N, Wegienka G, Havstad S, Genaw J,. Respiratory medication prescriptions before and after bariatric surgery. Annals of Allergy, Asthma and Immunology 2010; 104: 326-30.
14. Schachter LM,. Obesity is a risk for asthma and wheeze but not airway hyperresponsiveness. Thorax 2001; 56: 4-8.
15. Berry RB, Budhiraja R, Gottlieb DJ, et al., Rules for scoring respiratory events in sleep: update of the 2007 AASM manual for the scoring of sleep and associated events. Journal of Clinical Sleep Medicine 2012; 8: 597-619.
16. Mutter TC, Chateau D, Moffatt M, et al., A matched cohort study of post-operative outcomes in obstructive sleep apnea. Anesthesiology 2014; 121: 707-18.
17. Doufas AG, Tian L, Padrez KA, et al., Experimental pain and opioid analgesia in volunteers at high risk for obstructive sleep apnea. PLoS ONE 2013; 8: e54807.
18. Weingarten T, Flores A,. Obstructive sleep apnoea and perioperative complications in bariatric patients. British Journal of Anaesthesia 2010; 106: 273-3.
19. Mokhlesi B,. Obesity hypoventilation syndrome: a state of the art review. Respiratory Care 2010; 55: 1347-62.
20. Leykin Y, Brodsky JB,. Controversies in the Anesthetic Management of the Obese Surgical Patient. New York: Springer, 2012.
21. Chung F, Liao P, Elsaid H, Islam S, Shapiro CM, Sun Y,. Oxygen desaturation index from nocturnal oximetry. Anesthesia and Analgesia 2012; 114: 993-1000.
22. Wanahita N, Messerli FH, Bangalore S, Gami AS, Somers VK, Steinberg JS,. Atrial fibrillation and obesity-results of a meta-analysis. American Heart Journal 2008; 155: 310-5.
23. Peeters A, Barendregt JJ, Willekens F, Mackenbach JP, Mamun Al A, Bonneux L,. Obesity in adulthood and its consequences for life expectancy: a life-table analysis. Annals of Internal Medicine 2003; 138: 24-32.
24. Lavie CJ, Milani RV, Ventura HO,. Obesity and cardiovascular disease: risk factor, paradox, and impact of weight loss. Journal of the American College of Cardiology 2009; 53: 1925-32.
25. Medicines and Healthcare products Regulatory Agency. Ondansetron for intravenous use: dose-dependent QT interval prolongation-new posology. 2013. http://www.mhra.gov.uk/Safetyinformation/DrugSafetyUpdate/CON296402 (accessed 08/01/2015).
26. Hernandez AF, Whellan DJ, Stroud S, Sun JL, O'Connor CM, Jollis JG,. Outcomes in heart failure patients after major noncardiac surgery. Journal of the American College of Cardiology 2004; 44: 1446-53.
27. Blokhin IO, Lentz SR,. Mechanisms of thrombosis in obesity. Current Opinion in Hematology 2013; 20: 437-44.
28. Parkin L, Sweetland S, Balkwill A, et al., Body mass index, surgery, and risk of venous thromboembolism in middle-aged women: a cohort study. Circulation 2012; 125: 1897-904.
29. Demaria EJ, Portenier D, Wolfe L,. Obesity surgery mortality risk score: proposal for a clinically useful score to predict mortality risk in patients undergoing gastric bypass. Surgery for Obesity and Related Diseases 2007; 3: 134-40.
30. Magee CJ, Barry J, Javed S, Macadam R, Kerrigan D,. Extended thromboprophylaxis reduces incidence of postoperative venous thromboembolism in laparoscopic bariatric surgery. Surgery for Obesity and Related Diseases 2010; 6: 322-5.
31. Tasali E, Ip MSM,. Obstructive sleep apnea and metabolic syndrome: alterations in glucose metabolism and inflammation. Proceedings of the American Thoracic Society 2008; 5: 207-17.
32. Frisch A, Chandra P, Smiley D, et al., Prevalence and clinical outcome of hyperglycemia in the perioperative period in noncardiac surgery. Diabetes Care 2010; 33: 1783-8.
33. Guidone C,. Mechanisms of recovery from type 2 diabetes after malabsorptive bariatric surgery. Diabetes 2006; 55: 2025-31.
34. Janmahasatian S, Duffull SB, Ash S, Ward LC, Byrne NM, Green B,. Quantification of lean body weight. Clinical Pharmacokinetics 2005; 44: 1051-65.
35. Ingrande J, Lemmens HJM,. Dose adjustment of anaesthetics in the morbidly obese. British Journal of Anaesthesia 2010; 105 (Suppl. 1): i16-23.
36. Gepts E,. Pharmacokinetic concepts for TCI anaesthesia. Anaesthesia 1998; 53 (Suppl. 1): 4-12.
37. Hanley MJ, Abernethy DR, Greenblatt DJ,. Effect of obesity on the pharmacokinetics of drugs in humans. Clinical Pharmacokinetics 2010; 49: 71-87.
38. Pandit JJ, Andrade J, Bogod DG, et al., The 5th National Audit Project (NAP5) on accidental awareness during general anaesthesia: protocol, methods and analysis of data. Anaesthesia 2014; 69: 1078-88.
39. Ingrande J, Brodsky JB, Lemmens HJM,. Lean body weight scalar for the anesthetic induction dose of propofol in morbidly obese subjects. Anesthesia and Analgesia 2011; 113: 57-62.
40. Leykin Y, Pellis T, Lucca M, Lomangino G, Marzano B, Gullo A,. The pharmacodynamic effects of rocuronium when dosed according to real body weight or ideal body weight in morbidly obese patients. Anesthesia and Analgesia 2004; 99: 1086-9.
41. Hammoud HA, Aymard G, Lechat P, Boccheciampe N, Riou B, Aubrun F,. Relationships between plasma concentrations of morphine, morphine-3-glucuronide, morphine-6-glucuronide, and intravenous morphine titration outcomes in the postoperative period. Fundamental and Clinical Pharmacology 2011; 25: 518-27.
42. Absalom AR, Mani V, De Smet T, Struys MMRF,. Pharmacokinetic models for propofol-defining and illuminating the devil in the detail. British Journal of Anaesthesia 2009; 103: 26-37.
43. Demaria EJ, Murr M, Byrne TK, et al., Validation of the Obesity Surgery Mortality Risk score in a multicenter study proves it stratifies mortality risk in patients undergoing gastric bypass for morbid obesity. Annals of Surgery 2007; 246: 578-84.
44. Edholm D, Kullberg J, Haenni A, et al., Preoperative 4-week low-calorie diet reduces liver volume and intrahepatic fat, and facilitates laparoscopic gastric bypass in morbidly obese. Obesity Surgery 2011; 21: 345-50.
45. Mandal S, Hart N,. Respiratory complications of obesity. Clinical Medicine 2012; 12: 75-8.
46. Chung F, Subramanyam R, Liao P, Sasaki E, Shapiro C, Sun Y,. High STOP-BANG score indicates a high probability of obstructive sleep apnoea. British Journal of Anaesthesia 2012; 108: 768-75.
47. Chung F, Yang Y, Liao P,. Predictive performance of the STOP-BANG score for identifying obstructive sleep apnea in obese patients. Obesity Surgery 2013; 23: 2050-7.
48. Hallowell PT, Stellato TA, Petrozzi MC, et al., Eliminating respiratory intensive care unit stay after gastric bypass surgery. Surgery 2007; 142: 608-12.
49. Joshi GP, Ankichetty SP, Gan TJ, Chung F,. Society for Ambulatory Anesthesia consensus statement on preoperative selection of adult patients with obstructive sleep apnea scheduled for ambulatory surgery. Anesthesia and Analgesia. 2012; 115: 1060-8.
50. Lundstrøm LH, Møller AM, Rosenstock C, Astrup G, Wetterslev J,. High body mass index is a weak predictor for difficult and failed tracheal intubation: a cohort study of 91,332 consecutive patients scheduled for direct laryngoscopy registered in the Danish Anesthesia Database. Anesthesiology 2009; 110: 266-74.
51. Brodsky JB, Lemmens HJM, Brock-Utne JG, Vierra M, Saidman LJ,. Morbid obesity and tracheal intubation. Anesthesia and Analgesia 2002; 94: 732-6.
52. Kheterpal S, Martin L, Shanks AM, Tremper KK,. Predictions and outcomes of impossible mask ventilation: a review of 50,000 anesthetics. Anesthesiology 2009; 110: 891-7.
53. Langeron O, Masso E, Huraux C, et al., Prediction of difficult mask ventilation. Anesthesiology 2000; 92: 1229-36.
54. Apovian CM, Gokce N,. Obesity and cardiovascular disease. Circulation 2012; 125: 1178-82.
55. McCullough PA, Gallagher MJ, Dejong AT, et al., Cardiorespiratory fitness and short-term complications after bariatric surgery. Chest 2006; 130: 517-25.
56. Hennis PJ, Meale PM, Hurst RA, et al., Cardiopulmonary exercise testing predicts postoperative outcome in patients undergoing gastric bypass surgery. British Journal of Anaesthesia 2012; 109: 566-71.
57. Practice guidelines for the perioperative management of patients with obstructive sleep apnea: an updated report by the American Society of Anesthesiologists Task Force on Perioperative Management of patients with obstructive sleep apnea. Anesthesiology 2014; 120: 268-86.
58. Nielsen KC, Guller U, Steele SM, Klein SM, Greengrass RA, Pietrobon R,. Influence of obesity on surgical regional anesthesia in the ambulatory setting: an analysis of 9,038 blocks. Anesthesiology 2005; 102: 181-7.
59. Ingrande J, Brodsky JB, Lemmens HJ,. Regional anesthesia and obesity. Current Opinion in Anesthesiology 2009; 22: 683-6.
60. Balki M, Lee Y, Halpern S, Carvalho CA,. Ultrasound imaging of the lumbar spine in the transverse plane: the correlation between estimated and actual depth to the epidural space in obese parturients. Anesthesia and Analgesia 2009; 108: 1876-81.
61. Hamza J, Smida M, Benhamou D, Cohen SE,. Parturient's posture during epidural puncture affects the distance from the skin to epidural space. Journal of Clinical Anesthesia 1995; 7: 1-4.
62. Afshan G, Chohan U, Khan FA, Chaudhry N, Khan ZE, Khan AA,. Appropriate length of epidural catheter in the epidural space for postoperative analgesia: evaluation by epidurography. Anaesthesia 2011; 66: 913-8.
63. Carvalho B, Collins J, Drover DR, Atkinson Ralls L, Riley ET,. ED(50) and ED(95) of intrathecal bupivacaine in morbidly obese patients undergoing cesarean delivery. Anesthesiology 2011; 114: 529-35.
64. Broom MA, Slater J, Ure DS,. An observational study of practice during transfer of patients from anaesthetic room to operating theatre. Anaesthesia 2006; 61: 943-5.
65. Cook TM, Woodall N, Frerk C, on behalf of the Fourth National Audit Project. Major complications of airway management in the UK: results of the Fourth National Audit Project of the Royal College of Anaesthetists and the Difficult Airway Society. Part 1: Anaesthesia. British Journal of Anaesthesia 2011; 106: 617-31.
66. Gander S, Frascarolo P, Suter M, Spahn DR, Magnusson L,. Positive end-expiratory pressure during induction of general anesthesia increases duration of nonhypoxic apnea in morbidly obese patients. Anesthesia and Analgesia 2005; 100: 580-4.
67. Collins JS, Lemmens HJM, Brodsky JB, Brock-Utne JG, Levitan RM,. Laryngoscopy and morbid obesity: a comparison of the "sniff" and "ramped" positions. Obesity Surgery 2004; 14: 1171-5.
68. Henderson JJ, Popat MT, Latto IP, Pearce AC,. Difficult Airway Society guidelines for management of the unanticipated difficult intubation. Anaesthesia 2004; 59: 675-94.
69. Taha SK, El-Khatib MF, Baraka AS, et al., Effect of suxamethonium vs rocuronium on onset of oxygen desaturation during apnoea following rapid sequence induction. Anaesthesia 2010; 65: 358-61.
70. Benumof JL, Dagg R, Benumof R,. Critical hemoglobin desaturation will occur before return to an unparalyzed state following 1 mg/kg intravenous succinylcholine. Anesthesiology 1997; 87: 979-82.
71. Bisschops MMA, Holleman C, Huitink JM,. Can sugammadex save a patient in a simulated 'cannot intubate, cannot ventilate' situation? Anaesthesia 2010; 65: 936-41.
72. D'Anza B, Knight J, Greene JS,. Does body mass index predict tracheal airway size? Laryngoscope 2015; 125: 1093-7.
73. Santesson J,. Oxygen transport and venous admixture in the extremely obese. Influence of anaesthesia and artificial ventilation with and without positive end-expiratory pressure. Acta Anaesthesiologica Scandinavica 1976; 20: 387-94.
74. Mulier JPJ, Dillemans B, Cauwenberge S,. Impact of the patient's body position on the intraabdominal workspace during laparoscopic surgery. Surgical Endoscopy 2010; 24: 1398-402.
75. McKay RE, Malhotra A, Cakmakkaya OS, Hall KT, McKay WR, Apfel CC,. Effect of increased body mass index and anaesthetic duration on recovery of protective airway reflexes after sevoflurane vs desflurane. British Journal of Anaesthesia 2010; 104: 175-82.
76. Extubation algorithm. Difficult Airway Society. 2011. http://www.das.uk.com/content/das-extubation-guidelines (accessed 24/02/2014).
77. Awad S, Carter S, Purkayastha S, et al., Enhanced recovery after bariatric surgery (ERABS): clinical outcomes from a tertiary referral bariatric centre. Obesity Surgery 2014; 24: 753-8.
78. Venous Thromboembolism Prevention Quality Standard. National Institute for Health and care Excellence (NICE), 2010. https://www.nice.org.uk/guidance/qs3 (accessed 24/02/2015).
79. Rowland S, Dharmarajah B, Moore H, et al., Inferior vena cava filters for prevention of venous thromboembolism in obese patients undergoing bariatric surgery. Annals of Surgery 2015; 261: 35-45.
80. Haematology, Anticoagulation and Thrombosis Committee. Medicines Q&As, 2010. http://vteprevention-nhsengland.org.uk/images/Thromboprophylaxis%20and%20extreme%20weight.doc (accessed 14/10/2014).
81. Wool DB, Lemmens HJM, Brodsky JB, Solomon H, Chong KP, Morton JM,. Intraoperative fluid replacement and postoperative creatine phosphokinase levels in laparoscopic bariatric patients. Obesity Surgery 2010; 20: 698-701.
82. Academy of Medical Royal Colleges. Safe Sedation Practice for Healthcare Procedures. Standards and Guidance. London: Academy of Medical Royal Colleges, 2013.
83. National Confidential Enquiry into Perioperative Outcome and Death. Peri-operative Care: Knowing the Risk. London: NCEPOD, 2011. www.ncepod.org.uk/2011poc.htm (accessed 08/01/2015).
84. Chung F, Mezei G, Tong D,. Pre-existing medical conditions as predictors of adverse events in day-case surgery. British Journal of Anaesthesia 1999; 83: 262-70.
85. Davies KE, Houghton K, Montgomery JE,. Obesity and day-case surgery. Anaesthesia 2001; 56: 1112-5.
86. Verma R, Alladi R, Jackson I, et al., Day case and short stay surgery: 2. Anaesthesia 2011; 66: 417-434.
87. Jones K, Montgomery J,. Pushing the patient boundaries. In:, Smith I, McWhinnie D, Jackson I, eds. Day Case Surgery. Oxford: Oxford University Press, 2012: 327-34.
88. Watkins BM, Ahroni JH, Michaelson R, et al., Laparoscopic adjustable gastric banding in an ambulatory surgery center. Surgery for Obesity and Related Diseases 2008; 4: S56-62.
89. Dunsire MF, Patel AG, Awad N,. Laparoscopic gastric banding for morbid obesity in the day surgical setting. Journal of One-Day Surgery 2007; 17.3: A19.
90. Cobourn C, Mumford D, Chapman MA, Wells L,. Laparoscopic gastric banding is safe in outpatient surgical centers. Obesity Surgery 2010; 20: 415-22.
91. Centre for Maternal and Child Enquiries (CMACE). Maternal Obesity in the UK: Findings from a National Project. London: CMACE, 2010.
92. Obstetric Anaesthetists' Association. Advice to OAA Members from the OAA Committee: Re: CMACE Report 'Maternal obesity in the UK: findings from a national project' (2010). 2011. http://www.oaa-anaes.ac.uk/assets/-managed/editor/File/CMACE/OAA-response-to-obesity-report.pdf (accessed 08/01/2015).
93. Callaway LK, Prins JB, Chang AM, McIntyre HD,. The prevalence and impact of overweight and obesity in an Australian obstetric population. Medical Journal of Australia 2006; 184: 56-9.
94. Duckitt K, Harrington D,. Risk factors for pre-eclampsia at antenatal booking: systematic review of controlled studies. British Medical Journal 2005; 330: 565.
95. Vahratian A, Zhang J, Troendle JF, Savitz DA, Siega-Riz AM,. Maternal prepregnancy overweight and obesity and the pattern of labor progression in term nulliparous women. Obstetrics and Gynecology 2004; 104: 943-51.
96. Chu SY, Kim SY, Schmid CH, et al., Maternal obesity and risk of cesarean delivery: a meta-analysis. Obesity Reviews 2007; 8: 385-94.
97. Myles TD, Gooch J, Santolaya J,. Obesity as an independent risk factor for infectious morbidity in patients who undergo cesarean delivery. Obstetrics and Gynecology 2002; 100: 959-64.
98. Cnattingius S, Villamor E, Johansson S, et al., Maternal obesity and risk of preterm delivery. Journal of the American Medical Association 2013; 309: 2362-70.
99. Blomberg M,. Maternal obesity, mode of delivery, and neonatal outcome. Obstetrics and Gynecology 2013; 122: 50-5.
100. Bamgbade OA, Khalaf WM, Ajai O, Sharma R, Chidambaram V, Madhavan G,. Obstetric anaesthesia outcome in obese and non-obese parturients undergoing caesarean delivery: an observational study. International Journal of Obstetric Anesthesia 2009; 18: 221-5.
101. Hood DD, Dewan DM,. Anesthetic and obstetric outcome in morbidly obese parturients. Anesthesiology 1993; 79: 1210-8.
102. Perlow JH, Morgan MA,. Massive maternal obesity and perioperative cesarean morbidity. American Journal of Obstetrics and Gynecology 1994; 170: 560-5.
103. Royal College of Obstetricians and Gynaecologists. Reducing the Risk of Thrombosis and Embolism During Pregnancy and the Puerperium. 2009. https://www.rcog.org.uk/globalassets/documents/guidelines/gtg37areducingriskthrombosis.pdf (accessed 08/01/2015).
104. Kumar G, Majumdar T, Jacobs ER, et al., Outcomes of morbidly obese patients receiving invasive mechanical ventilation: a nationwide analysis. Chest 2013; 144: 48-54.
105. Akinnusi ME, Pineda LA, El Solh AA,. Effect of obesity on intensive care morbidity and mortality: a meta-analysis. Critical Care Medicine 2008; 36: 151-8.
106. Ventilation with lower tidal volumes as compared with traditional tidal volumes for acute lung injury and the acute respiratory distress syndrome. The Acute Respiratory Distress Syndrome Network. New England Journal of Medicine 2000; 342: 1301-8.
107. Dickerson RN,. Hypocaloric, high-protein nutrition therapy for critically ill patients with obesity. Nutrition in Clinical Practice 2014; 29: 786-91.
108. Vanden Hoek TL, Morrison LJ, Shuster M, et al., Part 12: cardiac arrest in special situations: 2010 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care. Circulation 2010; 122: S829-61.
109. Aufderheide TP, Lurie KG,. Death by hyperventilation: a common and life-threatening problem during cardiopulmonary resuscitation. Critical Care Medicine 2004; 32: S345-51.
110. Fumagalli S, Boni N, Padeletti M, et al., Determinants of thoracic electrical impedance in external electrical cardioversion of atrial fibrillation. American Journal of Cardiology 2006; 98: 82-7.
111. Naef M, Mouton WG, Naef U, van der Weg B, Maddern GJ, Wagner HE,. Esophageal dysmotility disorders after laparoscopic gastric banding-an underestimated complication. Annals of Surgery 2011; 253: 285-90.
112. Koolwijk J, Schors M, el Bouazati S, Noordergraaf GJ,. Airway management concerns in patient with gastric banding procedures. BMJ Case Reports 2013; doi: 10.1136/bcr-2013-201009.
113. Booth CMAC, Moore CEC, Eddleston JJ, Sharman MM, Atkinson DD, Moore JAJ,. Patient safety incidents associated with obesity: a review of reports to the National Patient Safety Agency and recommendations for hospital practice. Postgraduate Medical Journal 2011; 87: 694-9.