CINXE.COM

<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="120"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "publications.waset.org",cType: 'non-interactive',cRay: '9134a5d75d608217',cH: 'ncuic2gx2yfd0YMISHuZvaHmmrHeg27Q2KWSx7IHN54-1739783463-1.2.1.1-NPEgbFz5kwaZn4CulkuEtxs1lmi9JRBkviCTehhMRhi0IRygs1_O3TLVoS4ihHYr',cUPMDTk: "\/abstracts\/search?q=laryngeal%20mask%20airway&__cf_chl_tk=SwncYc.yblh0P8Sw3xi35LASduPKwe2JAwaJh__H2NI-1739783463-1.0.1.1-iIsjOKMbIZ.YR7X6jU.e_odOoIeB91Tsb7f8Cu07F4U",cFPWv: 'b',cITimeS: '1739783463',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/search?q=laryngeal%20mask%20airway&__cf_chl_f_tk=SwncYc.yblh0P8Sw3xi35LASduPKwe2JAwaJh__H2NI-1739783463-1.0.1.1-iIsjOKMbIZ.YR7X6jU.e_odOoIeB91Tsb7f8Cu07F4U",md: "eNQcB34llIUY5SibmzxwgVlczYdtb.N6ng_rRGIfEBM-1739783463-1.2.1.1-cJsNmbFuNwhx084WwIopYCQ8cQFPSb_.cvw8chb3dUjiQwnunctmItwr0im95ey4yDzqwTXHLb1pNtP2uDkWO_DIX0DW8U7LCyMiD0zNUzIdTmk3YiwFftSmhJaw5ToU010QZTu4X5gL6BsjAUaMF16JmqLWE14q32NbhJOzxhexk.lCSLuDTbu75pf6ju8ridVdraq_UxdKoHh4PJmpTgiqARP6dnc5gkU3CXtHr92LE2qBQ2uQ7F85r85uZ0_B1vBkWjlY_mUxcddeJnPtutgEyVt6h53PUcX096qJTODaWwEaS3PYEhGmYZ2gSs8RyLFu3kmHWfDpO6XwYjSzyLuuutFO3wTzirgwbjAiNR7nUdvUMROPkqTqsr8jDqoEGqGzLdCpL2XsS92N15RnIu50xgmAQeKEROX8EFACznpx3ZZ.uRJBPrbNiu1IvFYIcfzt0NMcAPXtzqTJu6ZdNpFaIf8CPID9pXTSaEihCyaEOWJ.8VI5tzBB_KW5LlHS6qFmHUwwLHPvxIT62RmyuiTefVTp9eRgxvuRvtekHWrEJgGmCDedmiCvzc1nxzy6V4_PH5sOrI4w9ObhmgEdpFsm5vrjJCd2dFUH0LEg0W68eaMW0fF_VqLaZf4KztcXn5SP.n_EUnAmmDFyBHJqepznheUJ90EhUfXH3LZiZoxs9zvL3kaZeUCJxQPoulgdUx5lawLJQ02.tGXPdnRVPDLvSISwRL30nMFChqtpxZKs5mbHi2w00i0kXotmMeWFGFA2wm_sUu8f7xBDEqri_dgcS1Noa2K5mKTtRUwUetkZIGEVr_kdvjOyfY0JWT2wDlXvVOCqZ8liHZgWUWzR3KcdTzICaQ41U3oKeSDtOUwbutzhLlcliLK8lhfrQM4hOzAxM9Teq5YeLqG_053Qk4oN2TqwVcxygL47xW9cezYicRbOZjHEkv6I6m8Ug0.jTBMeWZc344jtvLEqWrd8BRQNMYysyTRpfxHoxmVOl3gcvKvPZb0BNWaPF_8ZSHimCffL9VCrc3dE0fHVVXpXyZ6qW3103Mv_kwy3oFTwOQ7rC9r5iSD7Bfpug4lV3m44iBzYZBPW0Qe4C9g.sXdINEIaAKq3R860G_KV.R9xlUAZ0iMDqV7S_H4BFTJBqP60ZObwy8Doo0nG6zcNrFa8OdsgpCzjjzSFMn8dzhyjQ18m16Pp2Ntot0g4bEMgYRNiv9lpD113ObwOzvzNkeI7im4XkeDT4fJJtK8jXLvggpI5fn6nejulMr7CFTe.HWnLx7EP0UB6Dizjoj0KYkwWOjPIY5_Hu4RwUZwyXxP53dMMx7jqlmSplse2hiY38oh.08EtYxclk1DZNcs7Ei5fwExPkJku_6ZU9ctB.DVu3VQnB68F3F9f_Jj5igpO04FOOXAAd_VeyoFBKrkDYaUcpv.OAR8da0HIziSqdpxYj.JVmSwTyv3swKtip9SYsqyqvpfB.X2SD3gWW6d.6lwZTnmJqouFPeGyzCZEkGRxpeLF.aewWsnzYq_xYdwKTho5vfzsYt1iFGrAMVi6VN.uQEutRMGGqiIn69IHLoc_KZJ96FUvMk5EO_189_TVyF3efiN9UEjtU3QVHG_0cXpy4YyobAbrvrjB7A5Qrx4.yfrhCjIyHdEtYL57eJcCJ67iAqvPsdn0HFzBmK9qy6DJxmlCgYv0xTR2zCRGH8c3wwGb.rtMnuO8WXa4ycHGJS3vnFUPmI2v6wPIu28HU7JwErsHCUFwDOBa.YEOrN2AL6fsaRPb1Fr9pui.MJr9vjgcRnqzBRhx8hv3wTp3beTxysd5fz2ODKXtPA2hJCZpAsuo3_0qFjaFTyxme5HCpRFPZyUXitYuQtjQM7WOTCHrGee7HydgzESrR7UAy8Sk2kxeGUfe5RPkQkW66lJ.u4fBNNJlDeyl0r62g87NpjneT1V24VmVy931wsWzPhPIYAPFnLvBoDva1EK38Y0yIBKH",mdrd: "1R2wY_O1GXCojXXd6gD2i672UWdRtkku1TMpg40fmrU-1739783463-1.2.1.1-ggBlQCinxngoKl1I1jNG.DQ0IcOfnAMsO8d3adR_scn7Y8xbtUzuDjg7GAMVypgJvbIsZyeOtIMc6Ii1sB.twobfGdhCPxug.e82qG8H1Ba5IwjjTmfHEKxh9TYBCjIRdttGsuKDJiTRqxkieR0NLNH9SRMx7Lu3EQZ7eMFLO6igPXtsMGFhlgn3jiPdZnKp_Evdzt2GmbKvy9Eh5vJR9tmpEHz6AgShy3.RSVLmsts_cWXDmSY2owz5SEoi0FAucTCbwXUL3LpwezwmH6bxYGroBNHgulW.EOPXrMYqiS20kSY_Q2pTc62WOSSrIzv7wvvbABhCQsHyu47oGjZ2nEnkFWkEjQ2eblRRlyvJ9leBcUNENP2w2u08VA3omk_kJeqI_.3SephYew6hBP1vZWYzA6GoBVZq8ULG_mnuH7vX2DQm3YOD.zjLdSXhDHh1JuKsOM5BnD79O9G4QhlN8QjEMMnImZLFJnGGgBlSUK0LrWp.SAE038v0YaC5ekefuyfWKmHqIAYYlP4DSVqbrNWJnKl7FuZWrecttF4ovQAyNA8Rw8CQ.y_PnvjA2YVMr41wm_ZFCnB2g0XZ6RbPLYW8A1n41HMc1WMj5zMBu3Z4V9B6G37vokvx.VF7Z3_Ki0GiaMEKvuAKgk2RpFB7nhJ9Bga8L5L5IS2Tx6XkLpzwsUjcvRn5SPX.UQds8Sq3olnhroeKj1jP_gu.dVSqyTW3q7P.U7jcGDudoCY.es6_HL1CSePh_PESjsWdcfA3xp21Uw_JcK8pRgcQk2Vy1ueutQ1aM2L_gsZ1mf6xcfnZ2oHry2wPsYF1q2dUMqBXAesU0lUFHIyPMw5jCNleL3A8taXCSMJYQM1AMSi3EZFrnm_1UrWQeZQryDUl_O4OeZC0U6BzoVXOAf5eJfvAWZBifN3SHDg_JhOA1aBYrcbCCE2HEqwIpaZCAwRF3GpWC8576N.V9SLviURJeg3K2_obAbDYIorG_7KJpJxYEvs2n0CVl3Zd8ub_XJPQbenVdFH9gpUwaAtHijfwBJzV9Wt4mvW6hbwXN78bukpWRc1AggEP3SAKB5mY2DmeOiZWNhSPNdcg65yLbrCT8q_1F5zcBLmsrqmZ7uMGwGmCeH5gZDWmSOV56flvQrcoR3v2T0V4PZPvM7kMqr564cSwGULK3rZII2lI_U1UFPFPYxMRVt8CcuCVtsZ1Myc7822PDKx1BPKAxfZMb7D9HY1sVusLJMK1jHiBZ20KUf1EwJup7mmyLJfjRBDLy8fCQE2tZfHRlg7uTf1PIULDuppN4954ADkmGuTakOFbuRKzcs6X2RXdRjyqnJDBfYZZYFX4iyQrjmkjP7GZAfY7PGbd61FMHY5h8z7kPxriE3Ti840BKiRM619yKyF3UiVf73b8U_I4XV7X_hmgyoKDTIIp6GDHlGMvh6qY2VpsS51RKKDr0k9HYb3SFzr0riGDfr0ij5cDlGiVau_.m45tHDYTFhjmuHshMiFnyxNnVsktPZrq.biRwfj4SA2cF22KtGra9l49_H7.6eiG1xAlk9PirCNXS3cakG64nnXj_6nuM0JebAYVGc0bzk.0foNjGsQX3PnE9gWKtVbncf_mm8RW3wI71Lphd7DmfEnM0rklxi9vWIHzJrc6i9SRU63Tc4ZgWBOnDuGn__046VM.hLaAikvpnhPtfIDlJWs2d5KZvuHsHWiCPWhkg3JBZ_Z60dLmS.39tLjIuPFum7gckqfJe.L2LTX.P5JC8dRLr40p60lzAEI39Vb7Mo0jpfNjQGrQDgob6VbFobHKqlyyJY_423zoCa51uY8T2wrZs3UIa.uzAMdtrdcno2xnowChE9c9Z1fA2Ap5jkLsdkfPvU2f799e0Ac77g1pT2v51essrfU1NfxD5mfmBiJltTzEKinvK8UBk61_G4dyHe5lw8Vin_..3PUJh1HD6L0a4gKYkLQ5Eipvo2YVUMxOy7VTx3uWY4720rHco5YzN8WGErKcOg"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9134a5d75d608217';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/abstracts\/search?q=laryngeal%20mask%20airway&__cf_chl_rt_tk=SwncYc.yblh0P8Sw3xi35LASduPKwe2JAwaJh__H2NI-1739783463-1.0.1.1-iIsjOKMbIZ.YR7X6jU.e_odOoIeB91Tsb7f8Cu07F4U" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>