<prompt> What will be the effect on spirometry in case of lobectomy done for bronchogenic carcinoma?Increased residual volumeIncreased vital capacityIncreased dead space ventilationIncreased closing volume  <response>: In case of lobectomy, since the remaining lung tissue is lesser, all parameters like vital capacity, residual volume and closing volume will reduce. Hence, due to hypoxic stimulus post-operative patients of lobectomy will take rapid shallow breaths. This will lead to increased Dead space ventilation. 