A nurse is caring for a client who has a chest tube with a closed drainage system. Which of the following actions should the nurse take?

A. Muscle flaccidity: Hypocalcemia typically causes muscle twitching or spasms, not flaccidity. Muscle flaccidity is more often associated with conditions like hyperkalemia or electrolyte imbalances affecting muscle tone in different ways.

B. Lethargy: Lethargy can occur in various conditions, but it is not a hallmark of hypocalcemia. Instead, hypocalcemia usually causes symptoms like irritability, confusion, and muscle cramps rather than general lethargy.

C. Constipation: Constipation is more commonly associated with hypercalcemia, not hypocalcemia. Low calcium levels tend to cause neuromuscular and cardiac symptoms rather than gastrointestinal issues like constipation.

D. Positive Chvostek's sign: A positive Chvostek's sign, which is a twitching of the facial muscles when tapping the facial nerve, is a classic sign of hypocalcemia. It indicates increased neuromuscular excitability, which is characteristic of low calcium levels.

A. The nurse's role is to provide the client with initial information about the procedure prior to obtaining informed consent: The nurse can provide information, but the responsibility for providing initial information and obtaining informed consent lies with the provider.

B. Clients are unable to change their mind once a consent form is signed: Clients have the right to revoke their consent at any time before the procedure, even after signing the consent form. Consent is an ongoing process, and clients can change their decision at any point.

C. The provider performing the procedure is responsible for obtaining informed consent: It is the provider's responsibility to ensure the client understands the procedure, risks, and benefits, and to obtain informed consent.

D. The provider obtains verbal consent for the procedure without witnessing the client's signature: Written consent is required for procedures, and verbal consent is only valid in specific situations, such as emergencies.