Obstructive Shock

Shock means that tissues are not receiving enough effective blood flow and oxygen to meet metabolic needs. In obstructive shock, the heart may still be contracting, but a physical barrier prevents blood from entering the right heart or moving forward through the pulmonary or systemic circulation. Cardiac output then falls, and the brain, kidneys, skin, and other organs become underperfused. A client who suddenly becomes dyspnoeic, hypotensive, tachycardic, and confused after a procedure may have a tension pneumothorax, cardiac tamponade, or massive pulmonary embolism. The experienced nurse notices the abrupt change and the combination of findings rather than waiting for one classic sign. Oxygen, monitoring, IV access, and carefully reassessed fluid resuscitation support the client, but they do not remove the obstruction. The priority is to recognize the likely cause, activate emergency help, and prepare for definitive source-specific treatment.