Cardiology

Nitroglycerin is a potent vasodilator that can cause a dangerous drop in blood pressure, making a systolic reading below 90 mmHg a standard contraindication. While some local protocols may use 100 mmHg, 90 mmHg is the widely accepted NREMT standard to prevent profound hypotension and inadequate coronary perfusion.

The combination of chest pain, diaphoresis, and dyspnea strongly indicates acute coronary syndrome, which requires immediate cardiac evaluation. While anxiety can cause similar symptoms, assuming it is the sole cause is a dangerous mistake that can delay life-saving treatment for a myocardial infarction.

The combination of chest pain, diaphoresis, and dyspnea strongly indicates acute coronary syndrome, which requires immediate cardiac evaluation. A diagram for this topic isn't available yet — the worked example below walks the same reasoning step by step.

• !While anxiety can cause similar symptoms, assuming it is the sole cause is a dangerous mistake that can delay life-saving treatment for a myocardial infarction.
• !A rate of 60 compressions per minute is too slow to maintain adequate blood flow, while rates above 120 do not allow sufficient cardiac filling time.

Answer each from memory — you'll see instantly whether you're right and why.

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