A nurse is preparing to administer lithium 300 mg PO every 8 hr. Available is lithium carbonate 150 mg capsules. How many capsules should the nurse administer per dose?

(Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Increased anteroposterior diameter of the chest, also known as barrel chest, is a common finding in clients who have COPD with emphysema. It is caused by chronic air trapping and hyperinflation of the lungs, which results in fattening of the diaphragm and widening of the rib cage.

a) Oxygen saturation level 96% is within the normal range of 95% to 100% and does not indicate hypoxemia or impaired gas exchange. Clients who have COPD with emphysema typically have lower oxygen saturation levels, ranging from 88% to 92%.
b) Respiratory alkalosis is a condition in which the blood pH is elevated due to decreased carbon dioxide levels. It is caused by hyperventilation, which can occur in response to hypoxia, anxiety, or pain. Clients who have COPD with emphysema usually have respiratory acidosis, which is a condition in which the blood pH is lowered due to increased carbon dioxide levels. It is caused by hypoventilation, which results from impaired lung function and airway obstruction.
d) Petechiae on chest are small red or purple spots on the skin caused by bleeding from capillaries. They are not a typical finding in clients who have COPD with emphysema, unless they have severe coughing episodes or coagulation disorders. They can indicate infection, inflammation, trauma, or vascular disease.

Keeping the drainage system below the level of the client's chest prevents backflow of fluid or air into the
pleural space and maintains negative pressure in the system.

a) Disconnecting the chest tube from the drainage system during transport is dangerous and can cause pneumothorax, infection, or bleeding. The chest tube should remain connected to the drainage system at all times unless ordered by the provider.
b) Emptying the collection chamber prior to transport is unnecessary and can interfere with accurate measurement of drainage. The collection chamber should be emptied only when it is full or at the end of each shift.
c) Clamping the chest tube prior to transferring the client to a wheelchair is contraindicated and can cause tension pneumothorax, as it prevents air from escaping the pleural space. The chest tube should only be clamped for a brief period when changing the drainage system or checking for air leaks, and only with a provider's order.