This is a non-randomized, un-blinded study to evaluate Caption Health guidance software in patients in the medical surgery step-down unit. Patients will be scanned by a trained hospitalist and up to 4 standard views will be obtained per participant: PLAX, PSAX-PM, AP4 and SubC4. Observations will be made regarding human factors and performance of the device.

Inclusion Criteria: .

• Patients ≥18 years old
• Patients in the medical surgery step-down clinical setting
• Patients who consent to participating in the study

Exclusion Criteria: .

• ● Patients with emergent or urgent episodes of injury and illness that can lead to death or disability without rapid intervention

  • Unable to lie flat for study
  • Patients experiencing a known or suspected acute cardiac event at the time of evaluation
  • Patients with severe chest wall abnormalities
  • Patients who have undergone pneumonectomy
  • Patients with recent abdominal surgery
  • Patients unwilling or unable to give written informed consent
  • Principal Investigator determination to exclude the subject from participation
  • Investigators also have the right to withdraw patient from the study in the event of illness, adverse events, or other reasons concerning the health or well-being of the patient, or in the case of non-compliance.

Patients in the medical surgery step down unit at UCSF.