Surgical stabilization of the flail chest is challenging and has no established guidelines.Chest wall integrity and stability are the main factors that ensure the protection of intrathoracic organs and an adequate res...Surgical stabilization of the flail chest is challenging and has no established guidelines.Chest wall integrity and stability are the main factors that ensure the protection of intrathoracic organs and an adequate respiratory function.Here,we report a novel chest wall reconstruction technique in a 45-year-old man with a traumatic left flail chest and open pneumothorax diagnosed both clinically and radiographically.Rib approximation and chest wall reconstruction was done using intercostal figure-of-eight suture and polypropylene mesh with vascularized musculofascial flap.The patient improved gradually and was discharged after three weeks of total hospital stay.He returned to regular working after a month with no evidence of respiratory distress or paradoxical chest movement.Follow-up visit at one year revealed no lung hernia or paradoxical chest movement.This is a novel,feasible and cost-effective modification of chest wall reconstruction that can be adopted for thoracic wall repair in case of open flail chest,which needs emergency surgical interventions even in resource constraint settings.展开更多
We have experimentally studied the mode-locking dynamics of a polarization-maintaining figure-of-eight laser which has a semiconductor optical amplifier as gain medium. Self-starting mode-locking at the fundamental re...We have experimentally studied the mode-locking dynamics of a polarization-maintaining figure-of-eight laser which has a semiconductor optical amplifier as gain medium. Self-starting mode-locking at the fundamental repetition rate of 18 MHz is obtained at the lasing threshold, and further increasing the bias current leads to the progressive emission of additional optical pulses in each round trip and eventually to mode-locked emission at increasingly high harmonics of the fundamental repetition rate, up to 2.45 GHz. The intensity autocorrelation of the amplified mode-locked pulses has a full width at half-maximum duration of 382 fs, which corresponds to a pulse duration of 247 fs.展开更多
文摘Surgical stabilization of the flail chest is challenging and has no established guidelines.Chest wall integrity and stability are the main factors that ensure the protection of intrathoracic organs and an adequate respiratory function.Here,we report a novel chest wall reconstruction technique in a 45-year-old man with a traumatic left flail chest and open pneumothorax diagnosed both clinically and radiographically.Rib approximation and chest wall reconstruction was done using intercostal figure-of-eight suture and polypropylene mesh with vascularized musculofascial flap.The patient improved gradually and was discharged after three weeks of total hospital stay.He returned to regular working after a month with no evidence of respiratory distress or paradoxical chest movement.Follow-up visit at one year revealed no lung hernia or paradoxical chest movement.This is a novel,feasible and cost-effective modification of chest wall reconstruction that can be adopted for thoracic wall repair in case of open flail chest,which needs emergency surgical interventions even in resource constraint settings.
基金Ministerio de Economía y Competitividad(MINECO)(TEC2015-65212-C3-3-P)
文摘We have experimentally studied the mode-locking dynamics of a polarization-maintaining figure-of-eight laser which has a semiconductor optical amplifier as gain medium. Self-starting mode-locking at the fundamental repetition rate of 18 MHz is obtained at the lasing threshold, and further increasing the bias current leads to the progressive emission of additional optical pulses in each round trip and eventually to mode-locked emission at increasingly high harmonics of the fundamental repetition rate, up to 2.45 GHz. The intensity autocorrelation of the amplified mode-locked pulses has a full width at half-maximum duration of 382 fs, which corresponds to a pulse duration of 247 fs.
