A nurse is completing a client's history and physical examination. Which of the following information should the nurse consider subjective data?

Choice A reason: Petechiae are small red or purple spots caused by bleeding into the skin. They are objective findings that can be observed and measured during a physical examination. Since petechiae are visible signs, they are considered objective data, not subjective. Choice B reason: Blood pressure is a measurable and quantifiable vital sign. It is obtained using a sphygmomanometer and stethoscope or an automatic blood pressure cuff, providing objective data about the client's cardiovascular status. As an observable and recordable measurement, blood pressure is considered objective data. Choice C reason: Nausea is a sensation that the client reports experiencing. It cannot be directly observed or measured by the nurse and relies on the client's description of their symptoms. Because it is based on the client's personal experience and feelings, nausea is considered subjective data. Choice D reason: Cyanosis, which is a bluish discoloration of the skin due to inadequate oxygenation, is an objective finding that can be seen and assessed by the nurse. It provides information about the client's oxygenation status and is considered objective data, not subjective.