Monitoring Oxygen Levels and Pulse Rate



Monitoring Vital Signs and Understanding the Pulse

One of the blood’s primary functions is to carry oxygen to all body parts and remove waste products on the way back. If blood is not circulating, oxygen is not delivered where it needs to go. As a result, the body’s organs are not receiving the essential oxygen necessary to survive. Organs have a limited time frame that they can survive without oxygen before permanent damage occurs. The amount of damage and impact differ among the organs, but it is best to keep blood circulating everywhere effectively to be safe.

The Role of Hemoglobin with Oxygen

Oxygen in the blood attaches to hemoglobin on the red blood cells and carries it throughout the body. While having adequate blood pressure and pulse are necessary to distribute oxygen to the body’s distant parts, it takes more than the heart and lungs to get oxygen to where it needs to go. This is because oxygen distribution relies mainly on the blood, maintaining enough iron, ferritin, hemoglobin, and red blood cells. Without these essential elements, the oxygen can’t stick and travel as it should, and most will flow past its destination unused.

Pulse Ox

Using pulse oximetry (pulse ox) and the other readings help provide a better picture of your family member’s condition. They are easy to use and affordable. Most work by slipping them over the end of a finger, allowing infrared light to penetrate the skin and read the arterial blood’s color. The color of the blood denotes the amount of oxygen in the blood. Readings of 95-100% are typical, with readings below 92% indicating a problem. Tell your doctor if you consistently get readings below 92%, which is new and unexpected. Most doctors will want to start using oxygen to help support breathing if the reading is below 90% for long periods. Your family member will also complain of shortness of breath. In addition, you will likely notice a blue discoloration on their lips, fingernail beds, or gums, indicating a limited amount of circulating oxygen.

Your Pulse Can Tell You a Wealth of Information   

Most people know that if you do not have a pulse, you are not alive, but the pulse can tell you a lot more than that. The pulse tells us how hard the heart is working and if it is working correctly. Therefore, it is an excellent indicator of overall well-being.

Ten Pulse Points

The heart makes a pulse sound as it pumps blood into the aorta. We have ten strong pulse points located on the body: temporal (temple of the head), carotid (neck), the apex of the heart (over the heart), brachial (bend of the elbow), radial (wrist in-line with thumb), ulnar (wrist in-line with pinky finger), femoral (groin), popliteal (behind the knee), posterior tibialis (behind ankle), or dorsalis pedis (top of the foot near toes). Some of these are weaker to feel with your fingers than others.
We primarily use the radial (wrist near thumb), carotid (neck), and apex of the heart. Due to difficulty getting to the other sites as quickly or easily, use them only for specific medical evaluations when requested. However, any pulse point works to check the heart rate, and the number obtained at one site should be the same at all other sites unless a problem exists at that location.

 How Does a Healthy Pulse React?

A healthy pulse has a regular rhythm, i.e., a steady beating pattern that responds correctly to your activity level and environment changes. It speeds up when you increase activities and slows down when you rest. If you become overly warm, your body temperature rises; if you become excessively cold, it drops.

The pulse goes up and down to adapt to the body’s need for energy, temperature control, fluid and chemical regulation, and fight and flight signals in the brain. Therefore, your pulse,  blood pressure, and body temperature tell your doctor much about your body’s stress.

Follow these links to  videos showing how to perform a pulse check:
Radial Pulse Assessment 
Pulse Points Assessment 
Lippincott Nursing Procedures (2019) 8th Ed. Philadelphia: Wolters Kluwer, 651.

Pulse Classifications, Patterns, and Details

Pulse Rate description
Pulse Rate description

Lippincott Nursing Procedures (2019) 8th Ed. Philadelphia: Wolters Kluwer, 651.

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