All the following is true about Kevorkian sign except.
**Kevorkian Sign**
**Core Concept**
Kevorkian sign, also known as Kevorkian's sign or pulsus paradoxus, is a physical examination finding that represents a significant decrease in systolic blood pressure and an increase in pulse pressure during inspiration. This sign is often observed in patients with severe asthma, cardiac tamponade, and other conditions characterized by increased intrathoracic pressure.
**Why the Correct Answer is Right**
During inspiration, the decrease in intrathoracic pressure increases venous return to the right heart, leading to an increase in right ventricular volume. This increase in right ventricular volume is transmitted to the left ventricle through the pulmonary circuit, causing a decrease in left ventricular volume and subsequently a decrease in systolic blood pressure. The increase in pulse pressure is due to the increased pulse wave velocity during inspiration.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not provide any information about Kevorkian sign, making it an irrelevant distractor.
**Option B:** This option is incorrect because it is not a characteristic of Kevorkian sign. Instead, it describes a different clinical finding.
**Option C:** This option is incorrect because it is not a typical measurement associated with Kevorkian sign. Kevorkian sign is typically assessed by palpating the radial pulse and feeling for a decrease in systolic blood pressure during inspiration.
**Clinical Pearl / High-Yield Fact**
A significant pulsus paradoxus (greater than 10 mmHg) is often seen in patients with severe asthma, cardiac tamponade, and other conditions characterized by increased intrathoracic pressure.
**Correct Answer: B.**