Which of the following statements is true regarding venous thromboembolism (VTE)and pulmonary embolus (PE)?

Question

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PE should be suspected in any patient who has unexplained cardiorespiratory complaints and risk factors for VTE.Dyspnea,hemoptysis,and chest pain have been called the "classic" signs and symptoms for PE,but the three signs and symptoms actually occur in less than 20% of cases.Bradycardia and hyperventilation are not classic signs of PE.Most critically ill patients are at high risk for VTE,and all should receive prophylaxis.

Which of the Following Statements Is True Regarding Venous Thromboembolism