Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to spot obstructive shock symptoms [title] Look for symptoms related to the skin. [step] Signs and symptoms of obstructive shock begin to show when the heart fails to pump enough blood to the rest of the body. Some of the first signs that are noticeable involve the skin, such as excessive sweating, clamminess, reduced temperature and a general paleness.

Ending1: [title] Look for symptoms associated with brain injury. [step] Brain injuries sometimes cause severe pain in a specific area of the brain. Ending2: Note if you see these symptoms while you're in the shower. They may begin after the face is washed and after coffee, tea or dinner. Ending3: [substeps] Shortness of breath, abdominal compression, nausea, vomiting and/or dehydration. [title] Check for swollen or enlarged trachea by measuring the thickness of your trachea. Ending4: [substeps] If the skin looks pale and feels clammy, touch the fingers and toes to see if they're chilly. That's a good indication that there's a circulation problem.

Answer format: ending1/ending2/ending3/ending4