Mouth Breathing

03/01/1998 - "In ferrets, a 25-mg/kg dose of GS 4104 given twice daily reduced peak viral titers in nasal washings and eliminated constitutional responses to influenza virus infection including fever, increased nasal signs (sneezing, nasal discharge, mouth breathing), and decreased activity. "

12/04/2013 - "Increased oxygen load in the prefrontal cortex from mouth breathing: a vector-based near-infrared spectroscopy study."
01/01/2010 - "Evaluation of oxygen saturation by pulse-oximetry in mouth breathing patients."
02/01/1991 - "Oropharyngeal oxygen concentrations were measured during periods of nose and mouth breathing. "
06/01/1990 - "Thus a combination of the physical signs of mouth breathing and measurement of oxygen saturation whilst awake may provide a useful clinic screening test for children suspected of suffering from sleep apnoea."
07/01/1989 - "Five variables studied achieved statistical significance by univariant analysis: mouth breathing (P = .002), respiratory rate (P = .001), supplemental oxygen (P = .009), pulse (P = .0001), and supplemental oxygen via mask (P = .01). "

06/01/1999 - "End-tidal carbon dioxide was significantly higher in nose versus mouth, nose + mouth, and nose + mouth + dilator breathing, and in nose + dilator versus mouth breathing. "
08/01/1995 - "Finally, mouth breathing caused a mean decrease in end-tidal carbon dioxide of 0.25 kPa compared to nose breathing."
06/01/1991 - "The level of carbon dioxide (CO2) "inhaled" is showed to be lower in nostril breathers, singletons and in bassinets and higher with mouth breathing models, in "twins", and in carry cots, especially if the model's head is accidentally covered. "
08/01/1995 - "The present study investigated the possible influence on end-tidal carbon dioxide measurement of nasal oxygen administration, position of the sampling catheter and mouth breathing. "

12/01/2005 - "A total of 21 healthy volunteers (13 male, aged 22-52 yrs) were studied during mouth breathing, before and after topical upper airway anaesthesia (lidocaine). "
03/01/1999 - "In Part I of the study, a fibreoptic bronchoscope was positioned in the pharynx of three volunteers lying supine and the route followed by tinted lidocaine solution instilled onto the back of the protruded tongue during mouth breathing was observed. "

10/01/1991 - "The purpose of this study was to determine how changes in ventilation rate and in the entry route of air pollutants into the respiratory tract (nose versus mouth breathing) affected the respiratory tract uptake and penetration of inhaled gaseous and particulate pollutants associated with automobile emissions. "
01/01/2008 - "Finally, higher ventilation rates and mouth-breathing may pull air pollutants deeper into children's lungs, thereby making clearance slower and more difficult. "

08/01/2008 - "Thus, in the study described here, we examined whether mouth breathing, induced by surgical ligation of nostrils, could affect the seizure threshold induced by pentylenetetrazole in male NMRI mice. "
08/01/2008 - "Mouth breathing increases the pentylenetetrazole-induced seizure threshold in mice: a role for ATP-sensitive potassium channels."

03/01/1993 - "Each sleep study had three phases of at least 2-h durations: (1) control nasal breathing (CNB); (2) added nasal flow of 4 L of compressed air via nasal prongs (ANF); (3) predominant mouth breathing (PMB). "

04/01/2015 - "In this exploratory study, rats were exposed for 2 h to 100 mg WTC dust/m(3) (while under isoflurane [ISO] anesthesia) or an air/ISO mixture; this dose conservatively modeled likely exposures by mouth-breathing FR facing ≈750-1000 mg WTC dust/m(3). "

08/01/2012 - "This study examined the effect of mouth breathing on the strength and duration of vertical effect on the posterior teeth using related functional parameters during 3 min of gum chewing in 39 nasal breathers. "

05/01/2015 - "The study group comprised of 35 children with chronic allergic rhinitis, both genders, aged 5 - 14, with positive reaction to allergens, mouth breathing and malocclusion. "

03/01/2012 - "The effect of adenoidectomy or adenotonsillectomy on occlusal features in mouth-breathing preschoolers."
09/01/2011 - "To examine the influence of mouth breathing (MB) on children facial morphology before and after adenoidectomy or adenotonsillectomy. "
01/01/2010 - "Yet, we recommend that paediatricians should assess other mechanical obstacles if mouth breathing was not corrected after adenoidectomy. "
11/01/2004 - "To determine whether the increased dentoalveolar and facial heights found in mouth breathing children with enlarged adenoids are maintained following adenoidectomy and changed mode of breathing from mouth to nose. "
05/01/1989 - "Extraction is considered for preventing wedging effect and Adenoidectomy is performed as adenoid cause mouth breathing. "

10/01/2004 - "Mouth breathing compromises adherence to nasal continuous positive airway pressure therapy."
09/01/1996 - "Snoring detection may be effective in sleep apnoea syndrome with heavy snoring and without permanent mouth breathing, during the first night of nasal continuous positive airway pressure treatment."
01/01/2008 - "Mouth breathing in obstructive sleep apnea prior to and during nasal continuous positive airway pressure."
06/01/2007 - "Open-mouth breathing during sleep may increase the severity of obstructive sleep apnea (OSA) and complicate nasal continuous positive airway pressure (CPAP) therapy in patients with OSA. "

01/01/2001 - "These results suggest that assessment of the preoperative breathing status is helpful in predicting postoperative respiratory function after IMF and indicate that patients with preoperative mouth breathing require greater respiratory care after general anesthesia with IMF."
03/01/2008 - "A total of 125 patients (67 boys, 58 girls; mean age 4.8+/-2.4 years; range 2 to 15 years) underwent endoscopic adenoidectomy under general anesthesia for one or more of the following complaints: nasal obstruction, mouth breathing, snoring, loss of appetite, slower development than peers, and decreased hearing. "

10/01/2007 - "A combination of postural and breathing exercises was effective in restoring muscle imbalances and posture in a group of school-age mouth breathing children, as measured by changes in electrical activity and positional data."

12/01/2015 - "The aim of this simulation study was to investigate the difference in the FIO2 with a pharyngeal cannula versus nasal cannula during high- or low-tidal volume (VT) ventilation and open- or closed-mouth breathing. "
12/01/2015 - "At a flow of 5 L/min via a pharyngeal cannula, open-mouth breathing resulted in a significantly higher FIO2 compared with closed-mouth breathing. "
10/23/1998 - "Exposures were either 2 or 10 min long; concentrations ranged from 135 to 8621 ppm. Three additional exposures (20 to 48 ppm) were performed for 60 min. A mouth-breathing (MB) model with a tracheal cannula was used in most of the exposures to maximize delivery of the HF to the lower respiratory tract. "
03/01/1994 - "The aim of this study was to compare oxygen supplementation via nasal prongs with that via a catheter passed into the low oropharynx to eliminate the effect of mouth breathing. "
12/01/2015 - "Open-mouth breathing resulted in a higher FIO2 compared with closed-mouth breathing when 5 L/min oxygen was delivered via a pharyngeal cannula. "