What may be a symptom that indicates a patient with atrial tachycardia is unstable?

• A. Stable blood pressure
• B. Increased level of consciousness
• C. Cool clammy skin
• D. Normal heart rate

Answer: (C)

In the context of atrial tachycardia, instability in a patient is often indicated by signs of decreased perfusion or significant distress. Cool, clammy skin is a classic symptom associated with poor blood flow and can occur when the body is not receiving enough oxygen due to inadequate cardiac output. This may result from the rapid heart rate associated with atrial tachycardia, which can compromise the heart's ability to effectively pump blood.

When patients are unstable, they may exhibit signs that reflect an inadequate response from the cardiovascular system. Cool clammy skin suggests peripheral vasoconstriction and can act as a compensatory mechanism when the body is under stress. This contrasts with other symptoms that might suggest stability, such as maintained blood pressure, increased levels of consciousness (indicating good cerebral perfusion), or a normal heart rate—all of which generally signify that the patient is tolerating the atrial tachycardia well.

Therefore, in the case of a patient with atrial tachycardia, cool clammy skin serves as a crucial indicator of instability and warrants immediate attention in clinical practice.