21. Nurse Mia is conducting an abdominal examination on Mrs. Thompson, who is in her ninth month of pregnancy. While lying on her back, Mrs. Thompson suddenly feels short of breath, becomes pale, and exhibits a rapid heart rate and cold, clammy skin. What condition is Mrs. Thompson likely experiencing?
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EXPLANATION
✔Correct answer:
Experiencing supine hypotension. Supine hypotension, also known as supine hypotensive syndrome, is a condition that occurs in some pregnant women, especially in the later stages of pregnancy. When a pregnant woman lies flat on her back, the weight of the enlarged uterus can compress the inferior vena cava, the large vein that returns blood from the lower body to the heart. This compression reduces venous return, which in turn decreases cardiac output and can lead to a drop in blood pressure. The result is symptoms such as shortness of breath, pallor, rapid heart rate (tachycardia), dizziness, nausea, and cold, clammy skin.
This condition is more likely to occur in the third trimester, when the uterus is largest, and lying in a supine position exacerbates it. Mrs. Thompson’s symptoms—shortness of breath, paleness, rapid heart rate, and cold, clammy skin—are classic signs of supine hypotension.
Imagine a garden hose with water flowing smoothly. If you step on the hose (similar to the uterus pressing on the vena cava), it restricts the flow of water (blood) back to the faucet (heart). This causes pressure to drop and limits water flow to the rest of the garden (body), leading to symptoms of reduced blood flow.
Supine hypotension can be alleviated by repositioning the patient to relieve the pressure on the vena cava. Pregnant women should be advised to avoid lying flat on their back, especially in the later stages of pregnancy.
- Encourage Mrs. Thompson to lie on her left side or in a semi-recumbent position, which reduces pressure on the vena cava and improves blood flow.
- Educate pregnant women on avoiding the supine position, especially in the third trimester, to prevent episodes of supine hypotension.
- If symptoms occur, assist the patient in repositioning promptly and monitor her vital signs to ensure stabilization.
- Advise patients to inform healthcare providers if they experience similar symptoms at home, and provide guidance on safe sleeping and resting positions.
✘Incorrect answer options:
Showing early signs of labor. While early labor can cause discomfort, it does not typically lead to symptoms like pallor, cold clammy skin, or rapid heart rate in the absence of contractions or other labor signs. The symptoms Mrs. Thompson is experiencing are more consistent with circulatory changes rather than the onset of labor.
Experiencing a sudden blood pressure increase. An increase in blood pressure would be associated with symptoms such as headache, visual disturbances, and possibly upper abdominal pain, especially in conditions like preeclampsia. Mrs. Thompson’s symptoms (pallor, clammy skin, and rapid heart rate) are indicative of hypotension, not hypertension.
Entering a state of shock. While some symptoms may overlap with shock (e.g., pallor, rapid heart rate), the context of Mrs. Thompson lying flat and her pregnancy status suggest supine hypotension rather than shock. True shock would require a different cause, such as blood loss or sepsis, and would not resolve simply by repositioning.
References
- Ricci, S. S., & Kyle, T. (2020). Maternity and Pediatric Nursing. Wolters Kluwer.
- Lowdermilk, D. L., Perry, S. E., Cashion, M. C., & Alden, K. R. (2019). Maternity and Women's Health Care. Elsevier.