Domingues, Retrospective case 100 patients 7/100 procedures (7.0%): Moraes-Filho & series 1 failure of attachment to the oesophageal mucosa Domingues Level: IV 2 early detachments (2011) Quality: Q2 2 recording failure CX 2 downloaded data lost P2 Scarpulla et al. Retrospective case 83 patients 9/83 procedures (10.8%): (2007) series 4 failures to deploy or transmission failures Level: IV 5 early detachments Quality: Q2 CX P2 Francis (2008) Retrospective case 76 patients 9/76 procedures (11.8%): series 5 technical failures Level: IV 2 early detachments Quality: Q2 4 failures of attachment to the oesophageal CX mucosa P2 Wenner et al. Diagnostic 70 patients 4/70 procedures (5.7%): (2007 & 2008)a study 1 failure to pass through the upper oesophagus Level: IV 1 early detachment Quality: Q2 1 technical failure CX 1 placement failure P3 de Hoyos & Prospective case 66 patients 9/66 procedures (13.6%): Esparza (2010); series 3 capsules had poor data reception de Hoyos, Level: IV 3 early detachments Esparza & Loredo Quality: Q2 1 transmission failure (2009) CX 1 detachment failure P2 1 error in placement Tankurt et al. Case series 64 patients 2/64 procedures (3.1%): (2011) Level: IV 2 early detachments Quality: Q2 CX P2 Ward et al. (2004) Case series 60 patients 9/60 procedures (15%): Level: IV 7 failures of attachment to the oesophageal mucosa Quality: Q2 2 failures to retrieve data from recorder CX P2 Garrean et al. Post-test case series 60 patients 1/60 procedures (1.7%): (2008) Level: IV 1 capsule malfunction Quality: Q2 CX P2
Domingues, Moraes-Filho & Domingues (2011) Retrospective case series Level: IV Quality: Q2 CX P2 100 patients 7/100 procedures (7.0%): 1 failure of attachment to the oesophageal mucosa 2 early detachments 2 recording failure 2 downloaded data lost Scarpulla et al. (2007) Retrospective case series Level: IV Quality: Q2 CX P2 83 patients 9/83 procedures (10.8%): 4 failures to deploy or transmission failures 5 early detachments Francis (2008) Retrospective case series Level: IV Quality: Q2 CX P2 76 patients 9/76 procedures (11.8%): 5 technical failures 2 early detachments 4 failures of attachment to the oesophageal mucosa Wenner et al. (2007 & 2008)a Diagnostic study Level: IV Quality: Q2 CX P3 70 patients 4/70 procedures (5.7%): 1 failure to pass through the upper oesophagus 1 early detachment 1 technical failure 1 placement failure de Hoyos & Esparza (2010); de Hoyos, Esparza & Loredo (2009) Prospective case series Level: IV Quality: Q2 CX P2 66 patients 9/66 procedures (13.6%): 3 capsules had poor data reception 3 early detachments 1 transmission failure 1 detachment failure 1 error in placement Tankurt et al. (2011) Case series Level: IV Quality: Q2 CX P2 64 patients 2/64 procedures (3.1%): 2 early detachments Ward et al. (2004) Case series Level: IV Quality: Q2 CX P2 60 patients 9/60 procedures (15%): 7 failures of attachment to the oesophageal mucosa 2 failures to retrieve data from recorder Garrean et al. (2008) Post-test case series Level: IV Quality: Q2 CX P2 60 patients 1/60 procedures (1.7%): 1 capsule malfunction