

Pulmonary edema: This involves fluid accumulating in and around the lungs.

Hypoxemia: This involves low levels of oxygen in the blood.The symptoms can vary in their order and duration - they may last several days or come and go suddenly. coughing or wheezing, if fluid builds up in the lungs.in some cases, anxiety that can feel similar to a panic attack.a feeling similar to heartburn or indigestion.a feeling of crushing or heaviness in the chest.pain that spreads to the arms, neck, jaw, or back.a feeling of pressure, tightness, pain, squeezing, or aching in the chest.As heart attacks can be fatal, it is crucial to recognize the warnings as soon as possible and contact emergency services.
