The diagnosis and management of tension pneumothorax. Tension pneumothorax is the progressive build-up of air within the pleural space, usually due to a lung laceration which allows air to escape into the pleural space but not to return. Positive pressure ventilation may exacerbate this 'one-way-valve' effect.
While technically the President cannot declare war without Congress, under the War Powers Resolution of 1973, the President can send troops into combat as long as he informs Câ¦ongress within 48 hours of doing so .
While Congress can vote to override a presidential veto, causing the bill to become law without the president's approval, this is rarely done. More often than not, the mere threat of presidential veto is sufficient motivation for Congress to modify the bill prior to its final passage.