Rapid Rhino nasal packs are less painful and cause less bleeding, compared with Merocel packs, with no side effects. Thus, their use for nasal packing after septal surgery is recommended.

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Secure communication in Vehicular Ad hoc Networks (VANETs) can be achieved through a public key infrastructure (PKI). A tamper proof device (TPD) is traditionally used to statically store encryption keys in each vehicle. These keys are renewed periodically by a certificate authority (CA). In this paper, a dynamic key distribution protocol for PKI-based VANETs is proposed. A vehicle dynamically requests a key from its nearest road side unit. This request is securely propagated through network infrastructure to reach a CA cloud and a key is returned. A proposed key revocation mechanism makes use of the enhanced key distribution protocol to reduce the number of messages needed for revocation. Performance analysis has been performed through network simulation to demonstrate that the proposed protocol can dynamically support efficient and cost-reduced key distribution for vehicles.

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Few diagnostic modalities in medicine have been the subject of greater debate for as long after their inception as the pulmonary artery catheter. Placement of a Swan-Ganz catheter is associated with various complications, one of which is knotting. Complications of usage of these catheters are numerous and can have devastating effects. Knotting of Swan-Ganz catheters is a rare complication that can often be managed successfully using interventional radiological techniques. The case reported is a rare case of Swan-Ganz catheter knotting resulting from inserting an excessive length of Swan-Ganz catheter into the heart. Knotting can be prevented by following the principle rule in floating Swan-Ganz catheters by correlating the inserted length of pulmonary artery catheter (PAC) with the expected change in waveform.

The objective of the study is to assess the role of diode laser coupled with topical mitomycin C (MMC) in the management of synechia after endoscopic sinus surgery. Twenty-five patients with recurrent sinusitis due to synechia between the middle turbinate and lateral nasal wall after endoscopic sinus surgery were included in this study. Diode laser was used to divide the synechia and MMC was applied topically in the area of the middle meatus for 5 min. Patients were followed for 6 months to assess symptoms improvement, recurrence of synechia and CT scan changes. Most of our patients reported improvement of their symptoms, recurrent synechia occurred in 15% of the patients with significant improvement of the CT scan findings. In conclusion, the diode laser with topical MMC is an outpatient procedure which is simple, safe and effective in managing postoperative nasal synechia.