Low Hemoglobin: Why It Doesn't Always Mean Bleeding | Straight A Nursing

Understanding Hemoglobin

• 🩸 Hemoglobin is the protein in red blood cells responsible for carrying oxygen.
• 🎯 Normal hemoglobin ranges are approximately 12-16 g/dL for women and 14-18 g/dL for men, though these can vary by facility.

Common Causes of Low Hemoglobin

• 🏥 Anemia of chronic disease can result from long-term conditions like renal disease, cancer, or autoimmune disorders, suppressing red blood cell function and leading to chronically low hemoglobin without acute bleeding.
• 🍎 Nutritional deficiencies, particularly in iron, vitamin B12, or folate, can cause anemia and low hemoglobin. This is common in patients with poor appetite, undergoing chemotherapy, or with alcohol use disorder.
• 🦠 Absorption issues, such as those seen in celiac disease, can also lead to nutritional deficiencies and consequently, low hemoglobin.
• 💧 Hemodilution occurs when a large fluid bolus dilutes the hemoglobin concentration, making the level appear lower without an actual loss of red blood cells.

Investigating Low Hemoglobin

• 🔍 When a low hemoglobin level is observed, it's crucial not to automatically assume blood loss.
• 📝 Assess the patient's history, vital signs, and look for overt signs of bleeding such as blood in stool or urine, or saturated dressings.
• ⚠️ Be aware of subtle bleeding, like GI bleeding or internal bleeding post-surgery.
• ✅ The goal is to connect the dots and identify the actual cause of the low hemoglobin, which may not always be an acute emergency.