Impact of Smoking and Smoking Cessation Medications in Aviators.

Purpose Of Review: To (1) compare the effects of cigarette smoking, nicotine withdrawal, and smoking cessation medications in US civilian and military aviators and (2) review the regulations in place regarding the use of smoking cessation medications for US aviators.

Recent Findings: Cigarette smoking and associated cessation attempts are associated with multiple hazards in flight to aviators including effects from nicotine intoxication, nicotine withdrawal, carbon monoxide intoxication, and side effects related to smoking cessation medications. Current civilian and military regulations place significant restrictions on the use of smoking cessation medications to aviators; however, recent research suggests that the hazards associated with these medications might be lower than the risk-associated unassisted nicotine withdrawal.

The effects of elevated carbon dioxide levels on a Vibrio sp. isolated from the deep-sea.

Introduction: The effect of oceanic CO2 sequestration was examined exposing a deep-sea bacterium identified as Vibrio alginolyticus (9NA) to elevated levels of carbon dioxide and monitoring its growth at 2,750 psi (1,846 m depth).

Findings: The wild-type strain of 9NA could not grow in acidified marine broth below a pH of 5. The pH of marine broth did not drop below this level until at least 20.