A nurse assesses four patients. Which patient has greatest risk for hypomagnesemia?

A) Dysrhythmias:
Straining while defecating can trigger the Valsalva maneuver, which involves taking a deep breath and bearing down. This can lead to increased intrathoracic pressure, decreased venous return to the heart, and subsequently a sudden drop in blood pressure when the strain is released. These changes can cause cardiac dysrhythmias, particularly in older adults or those with underlying heart conditions.

B) Dilated pupils:
Dilated pupils are not a known consequence of straining while defecating. Pupillary dilation is typically associated with responses to low light, certain medications, or neurological conditions, rather than gastrointestinal strain.

C) Gastric ulcer:
Gastric ulcers are caused by factors such as Helicobacter pylori infection, prolonged use of nonsteroidal anti-inflammatory drugs (NSAIDs), or excessive stomach acid. Straining during defecation does not contribute to the development of gastric ulcers.

D) Diarrhea:
Straining while defecating is more likely to be associated with constipation rather than diarrhea. Diarrhea involves frequent, loose, or watery stools, whereas straining typically occurs due to hard stools and difficulty passing them.

A) The client reports numbness at the site: Numbness at the insertion site is not a typical finding of infection. It may indicate nerve damage or another issue but is not specific to infection.

B) Purulent drainage noted from the site: Purulent drainage, characterized by pus-like discharge, is a common sign of infection at the insertion site of an intravenous catheter. It suggests the presence of bacteria and inflammation at the site.

C) Skin over the site is sloughing: Sloughing of the skin may occur with severe tissue damage but is not specific to infection. It could indicate other complications such as tissue necrosis or chemical irritation.

D) The vein appears cord-like: A cord-like appearance of the vein, known as thrombophlebitis, can occur with or without infection. It indicates inflammation and clot formation within the vein, which can be a complication of intravenous catheter insertion, but it does not specifically indicate infection.