A 57-year-old man with progressive neuromuscular weakness presents with morning headaches and orthopnea. Vital signs show BP 145/92, HR 88, RR 22, temperature 37.2°C, SpO2 98% on room air. Pulmonary examination is clear to auscultation bilaterally. Arterial blood gas reveals pH 7.32, PCO2 58 mmHg, HCO3 28 mEq/L. He denies recent infections. Which of the following muscles is most important to evaluate for impending ventilatory failure?
- A)Biceps brachii
- B)Deltoid
- C)DiaphragmGABARITO
- D)Masseter
- E)Temporalis
Explicação
In neuromuscular respiratory failure, diaphragmatic weakness leads to hypoventilation, orthopnea, and hypercapnia, especially during sleep. Monitoring inspiratory force and vital capacity helps assess risk of respiratory decompensation. Ver explicação completa e trilha adaptativa →