A nurse is caring for a school-age child who is 2 hr postoperative following cardiac catheterization.

The nurse observes blood on the child’s dressing.

Which of the following actions should the nurse take?

This is because a peak flow meter measures how fast you can push air out of your lungs when you blow out as hard and as fast as you can. This is called peak expiratory flow rate (PEFR) or peak expiratory flow (PEF). It shows how open the airways are in the lungs and can help detect early signs of worsening asthma.

Choice A is wrong because maintaining a semi-Fowler’s position during testing is not necessary. You can sit or stand up straight, but make sure you do it the same way each time.

Choice B is wrong because placing tongue on the mouthpiece of the meter can block the air flow and affect the accuracy of the measurement. You should close your lips tightly on the mouthpiece instead.

Choice D is wrong because recording the average of the readings is not recommended.

You should record the highest of the three readings on a sheet of paper, calendar or in your asthma diary. This is your daily peak flow.

Normal ranges for peak flow vary depending on age, height, gender and race. You can use a chart or calculator to find out your predicted normal peak flow based on these

factors. However, it is more important to find out your personal best peak flow by performing peak flow testing twice a day for two weeks when your asthma is under good control. Your personal best peak flow will be used to create your asthma action plan with your healthcare provider.

This is because bleeding after a cardiac catheterization is a possible complication that can occur when a catheter is inserted into an artery in the groin or arm to examine the heart. Bleeding can drip or spurt from the puncture site, or form a lump under the skin called a hematoma. Applying continuous pressure above the site can help stop the bleeding and prevent hematoma formation.
Choice A is wrong because applying intermittent pressure 2.5 cm (1 in) above the percutaneous skin site may not be enough to control the bleeding and may increase the risk of hematoma.
Choice B is wrong because applying intermittent pressure 2.5 cm (1 in) below the percutaneous skin site may not be effective and may cause more damage to the artery.
Choice C is wrong because applying continuous pressure 2.5 cm (1 in) below the percutaneous skin site may also be ineffective and harmful to the artery.