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Chambers T, Bamber H, Singh N. Perioperative management of Obstructive Sleep Apnoea: Present themes and future directions. Curr Opin Pulm Med 2023; 29:557-566. [PMID: 37646529 DOI: 10.1097/mcp.0000000000001012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
PURPOSE OF REVIEW Obstructive sleep apnoea (OSA) is an increasingly common pathology that all those involved in perioperative care will come across. Patients with the condition present a challenge at many stages along the perioperative journey, not least because many patients living with OSA are unaware of their diagnosis.Key interventions can be made pre, intra-, and postoperatively to improve outcomes. Knowledge of screening tools, diagnostic tests, and the raft of treatment options are important for anyone caring for these patients. RECENT FINDINGS Recent literature has highlighted the increasing complexity of surgical patients and significant underdiagnosis of OSA in this patient population. Work has demonstrated how and why patients with OSA are at a higher perioperative risk and that effective positive airways pressure (PAP) therapy can reduce these risks, alongside evidencing how best to optimise adherence to therapy, a key issue in OSA. SUMMARY OSA, and particularly undiagnosed OSA, presents a huge problem in the perioperative period. Perioperative PAP reduces the risk of postoperative complications but adherence remains an issue. Bespoke perioperative pathways should be developed to identify and optimise high risk patients, although at present evidence on how best to achieve this is lacking.
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Affiliation(s)
- Tom Chambers
- Core Anaesthetic Trainee, London School of Anaesthesia
- Honorary Clinical Fellow, St Bartholomew's Hospital, Bart's Health NHS Trust, London
| | - Harry Bamber
- Anaesthetic Trainee, Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Wales, UK
| | - Nanak Singh
- Consultant Respiratory Physician, St Bartholomew's Hospital, Barts Health NHS Trust, London, UK
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Seet E, Waseem R, Chan MTV, Wang CY, Liao V, Suen C, Chung F. Characteristics of Patients with Unrecognized Sleep Apnea Requiring Postoperative Oxygen Therapy. J Pers Med 2022; 12:jpm12101543. [PMID: 36294683 PMCID: PMC9605207 DOI: 10.3390/jpm12101543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/08/2022] [Accepted: 09/16/2022] [Indexed: 11/26/2022] Open
Abstract
Surgical patients with obstructive sleep apnea (OSA) have increased risk of perioperative complications. The primary objective is to determine the characteristics of surgical patients with unrecognized OSA requiring oxygen therapy for postoperative hypoxemia. The secondary objective is to investigate the characteristics of patients who were responsive to oxygen therapy. This was a post-hoc multicenter study involving patients with cardiovascular risk factors undergoing major non-cardiac surgery. Patients ≥45 years old underwent Type 3 sleep apnea testing and nocturnal oximetry preoperatively. Responders to oxygen therapy were defined as individuals with ≥50% reduction in oxygen desaturation index (ODI) on postoperative night 1 versus preoperative ODI. In total, 624 out of 823 patients with unrecognized OSA required oxygen therapy. These were mostly males, had larger neck circumferences, higher Revised Cardiac Risk Indices, higher STOP-Bang scores, and higher ASA physical status, undergoing intraperitoneal or vascular surgery. Multivariable regression analysis showed that the preoperative longer cumulative time SpO2 < 90% or CT90% (adjusted p = 0.03), and lower average overnight SpO2 (adjusted p < 0.001), were independently associated with patients requiring oxygen therapy. Seventy percent of patients were responders to oxygen therapy with ≥50% ODI reduction. Preoperative ODI (19.0 ± 12.9 vs. 14.1 ± 11.4 events/h, p < 0.001), CT90% (42.3 ± 66.2 vs. 31.1 ± 57.0 min, p = 0.038), and CT80% (7.1 ± 22.6 vs. 3.6 ± 8.7 min, p = 0.007) were significantly higher in the responder than the non-responder. Patients with unrecognized OSA requiring postoperative oxygen therapy were males with larger neck circumferences and higher STOP-Bang scores. Those responding to oxygen therapy were likely to have severe OSA and worse preoperative nocturnal hypoxemia. Preoperative overnight oximetry parameters may help in stratifying patients.
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Affiliation(s)
- Edwin Seet
- Department of Anaesthesia, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117559, Singapore
- Department of Anaesthesia, Khoo Teck Puat Hospital, National Healthcare Group, Singapore 768828, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 637718, Singapore
- Correspondence:
| | - Rida Waseem
- Department of Anesthesiology and Pain Medicine, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, ON M5T 1R8, Canada
| | - Matthew T. V. Chan
- Department of Anaesthesia and Intensive Care, Chinese University of Hong Kong, Hong Kong SAR 999077, China
| | - Chew Yin Wang
- Department of Anaesthesiology, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Vanessa Liao
- Department of Anesthesiology and Pain Medicine, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, ON M5T 1R8, Canada
- University of Western Ontario, London, ON N6A 3K7, Canada
| | - Colin Suen
- Department of Anesthesiology and Pain Medicine, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, ON M5T 1R8, Canada
| | - Frances Chung
- Department of Anesthesiology and Pain Medicine, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, ON M5T 1R8, Canada
- University of Toronto, Toronto, ON M5S 3E5, Canada
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Jung H, Kim D, Lee W, Seo H, Seo J, Choi J, Joo EY. Performance evaluation of a wrist-worn reflectance pulse oximeter during sleep. Sleep Health 2022; 8:420-428. [PMID: 35817700 DOI: 10.1016/j.sleh.2022.04.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 04/15/2022] [Accepted: 04/26/2022] [Indexed: 11/17/2022]
Abstract
OBJECTIVES To characterize and evaluate the estimation of oxygen saturation measured by a wrist-worn reflectance pulse oximeter during sleep. METHODS Ninety-seven adults with sleep disturbances were enrolled. Oxygen saturation was simultaneously measured using a reflectance pulse oximeter (Galaxy Watch 4 [GW4], Samsung, South Korea) and a transmittance pulse oximeter (polysomnography) as a reference. The performance of the device was evaluated using the root mean squared error (RMSE) and coverage rate. Additionally, GW4-derived oxygen desaturation index (ODI) was compared with the apnea-hypopnea index (AHI) derived from polysomnography. RESULTS The GW4 had an overall RMSE of 2.3% and negligible bias of -0.2%. A Bland-Altman density plot showed good agreement between the GW4 and the reference pulse oximeter. RMSEs were 1.65 ± 0.57%, 1.76 ± 0.65%, 1.93 ± 0.54%, and 2.93 ± 1.71% for normal (n = 18), mild (n = 21), moderate (n = 23), and severe obstructive sleep apnea (n = 35), respectively. The data rejection rate was 26.5%, which was caused by fluctuations in contact pressure and the discarding of data less than 70% of saturation. A GW4-ODI ≥5/h had the highest ability to predict AHI ≥15/h with sensitivity, specificity, accuracy, and area under the curve of 89.7%, 64.1%, 79.4%, and 0.908, respectively. CONCLUSIONS This study evaluated the estimation of oxygen saturation by the GW4 during sleep. This device complies with both Food and Drug Administration and International Organization for Standardization standards. Further improvements in the algorithms of wearable devices are required to obtain more accurate and reliable information about oxygen saturation measurements.
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Affiliation(s)
| | - Dongyeop Kim
- Department of Neurology, Seoul Hospital, Ewha Womans University College of Medicine, Seoul, Republic of Korea
| | - Wonkyu Lee
- Samsung Electronics, Suwon, Republic of Korea
| | - Hyejung Seo
- Samsung Electronics, Suwon, Republic of Korea
| | - Jinwoo Seo
- Samsung Electronics, Suwon, Republic of Korea
| | | | - Eun Yeon Joo
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
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Preoperative oximetry-derived hypoxemia predicts postoperative cardiovascular events in surgical patients with unrecognized obstructive sleep apnea. J Clin Anesth 2022; 78:110653. [DOI: 10.1016/j.jclinane.2022.110653] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 12/15/2021] [Accepted: 01/08/2022] [Indexed: 12/30/2022]
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Liew LQN, Law LSC, Seet E, Di Piazza F, Liu KE, Sim MA, Chua VTY, Weingarten TN, Khanna AK, Ti LK. Nocturnal Oxygen Desaturation Index Correlates with Respiratory Depression in Post-Surgical Patients Receiving Opioids - A Post-Hoc Analysis from the Prediction of Opioid-Induced Respiratory Depression in Patients Monitored by Capnography (PRODIGY) Study. Nat Sci Sleep 2022; 14:805-817. [PMID: 35510128 PMCID: PMC9058859 DOI: 10.2147/nss.s351840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 03/23/2022] [Indexed: 11/23/2022] Open
Abstract
Purpose Postoperative monitoring of respiratory status on general care wards typically consists of intermittent checks of oxyhemoglobin saturation and respiratory rate, allowing substantial unmonitored time for severe opioid induced respiratory depression (RD) to develop unnoticed. Oxygen desaturation index (ODI) can be computed solely by continuous pulse oximetry monitoring. In this post-hoc analysis, we evaluate whether nocturnal ODI correlates with RD. Patients and Methods The PRODIGY trial (NCT02811302) was a multinational study conducted where adult patients receiving parenteral opioids on the general care floor were continuously monitored by blinded pulse oximetry and capnography monitoring to detect episodes of RD. An RD episode was defined as: respiratory rate ≤5 breaths/min (bpm) for ≥3 minutes, oxygen saturation (SpO2) ≤85% for ≥3 minutes, end-tidal carbon dioxide (EtCO2) ≤15 or ≥60 mm Hg for ≥3 minutes, apnea episode lasting >30 seconds, or any respiratory opioid-related adverse event. Data were used to calculate nocturnal (00:00 ─ 06:00) ODI4% based on desaturation episodes (4% decrease from mean oxyhemoglobin saturation in the past 120 seconds, lasting ≥10 seconds). Continuous monitoring began after a patient received parenteral opioids, allowing identification of potential RD and ODI4% episodes during opioid therapy. The average number of ODI4% episodes (≥1, ≥5, ≥10, ≥15 episodes/hour) were analyzed. Logistic regression and area under the receiver operating characteristic curve (AUC) were computed. Results A final cohort of 1072 (out of 1335) patients had sufficient data, with 76% (N=817/1072) having ≥1 episode of ODI4%. Multivariable logistic regression showed that ODI4% was strongly associated with RD, with greater risk for higher ODI4% scores: ≥5 episodes/hour odds ratio 2.59 (95% CI 1.72-3.89, p<0.0001); ≥10 episodes/hour 3.39 (95% CI 1.80-6.39, p=0.0002); ≥15 episodes/hour 4.71 (95% CI 1.93-11.47, p=0.0006).There was no significant association between ODI4% and respiratory adverse events. Conclusion Nocturnal ODI4% was highly correlated with RD among hospitalized patients receiving parenteral opioids. Patients with a high ODI4%, especially with ≥15 episodes/hour, are more likely to experience RD and should be evaluated for the need of closer monitoring after opioid administration.
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Affiliation(s)
| | | | - Edwin Seet
- National University of Singapore, Yong Loo Lin School of Medicine, Singapore
| | - Fabio Di Piazza
- Medtronic Core Clinical Solutions, Study and Scientific Solutions, Rome, Italy
| | - Katherine E Liu
- Patient Monitoring Clinical Research, Medtronic, Minneapolis, MN, USA
| | - Ming Ann Sim
- National University Hospital, Singapore, Singapore
| | | | - Toby N Weingarten
- Departments of Anesthesiology and Perioperative Medicine, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
| | - Ashish K Khanna
- Wake Forest School of Medicine, Winston-Salem, North Carolina, US & Outcomes Research Consortium, Cleveland, OH, USA
| | - Lian Kah Ti
- National University Hospital, Singapore, Singapore
- National University of Singapore, Yong Loo Lin School of Medicine, Singapore
| | - On behalf of the PRediction of Opioid-induced respiratory Depression In patients monitored by capnoGraphY (PRODIGY) Group Investigators
- National University Hospital, Singapore, Singapore
- National University of Singapore, Yong Loo Lin School of Medicine, Singapore
- Medtronic Core Clinical Solutions, Study and Scientific Solutions, Rome, Italy
- Patient Monitoring Clinical Research, Medtronic, Minneapolis, MN, USA
- Departments of Anesthesiology and Perioperative Medicine, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
- Wake Forest School of Medicine, Winston-Salem, North Carolina, US & Outcomes Research Consortium, Cleveland, OH, USA
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