Acute Exacerbation of Pulmonary Fibrosis in Syndrome of Combined Pulmonary Fibrosis and Emphysema Following Lung Surgery : A Report of Two Cases

We herein report two cases of an acute exacerbation of pulmonary fibrosis in the syndrome of combined pulmonary fibrosis and emphysema (CPFE) following lung surgery, and also review the relevant literature. One is a 76-year-old man, who had been diagnosed with CPFE and lung cancer and undergone lobectomy. He was admitted to our hospital because of aggravation of dyspnea 50 days after lung surgery. The other is a 69-yearold man who had been diagnosed with pulmonary bulla, pulmonary emphysema and idiopathic interstitial pneumonia at 53 years old and was complicated by lung cancer. He underwent right lower lobectomy and presented with slight fever and desaturation 18 days after lung surgery. In both cases, chest computed tomography showed diffuse bilateral ground-glass opacities superimposed on preceding reticular opacities in the lower lung field. They were diagnosed as acute exacerbation of pulmonary fibrosis in CPFE.A strict followup is required, because the prevalence of lung cancer may be higher, and acute exacerbation may occur following lung surgery in CPFE patients. HRCT plays an important role in evaluating the occurrence of lung cancer at an early stage and for determining whether there is an acute exacerbation of pulmonary fibrosis in CPFE patients.Article信州医学雑誌 60(3): 149-156(2012)journal articl

Effects of transcutaneous electrical nerve stimulation on physical symptoms in advanced cancer patients receiving palliative care

Transcutaneous electrical nerve stimulation (TENS) is primarily used for pain, butmight be useful for various other physical symptoms, including nausea, fatigue,dyspnea, and constipation. However, few studies have used TENS for treating thephysical symptoms of patients with advanced cancer. In this crossover trial, we assessthe effects of TENS on pain and other physical symptoms in 20 in-patients withadvanced cancer receiving palliative care. For 5-day phases between wash out periodsof 5 days, patients received TENS or non-TENS. TENS was delivered at four points: thecenter of the back for mainly nausea and dyspnea, on the back at the same dermatomallevel as the origin of the pain (100 Hz), and on both ankle joints for constipation (10Hz). The intensity of pain and the total opioid dose used during phases were recorded.Physical symptoms were evaluated using the European Organization for Research andTreatment of Cancer (EORTC) Quality of Life Questionnaire Core 15 Palliative Care(QLQ-C15-PAL). Hematological and biochemical data were recorded before and afterthe TENS phase. The average pain and total number of opioid rescue doses weresignificantly reduced by TENS. TENS tended to improve nausea and appetite loss, butnot constipation. There were no effects on hematological and biochemical parameters.Use of TENS could safely improve pain, nausea, and appetite loss in patients withadvanced cancer. Although it cannot be used as a substitute for opioids and otherpharmaceutical treatment, it may be useful to support palliative care

High-order harmonic generation from hybrid organic–inorganic perovskite thin films

The generation of high-order harmonics from hybrid organic–inorganic perovskites (HOIPs) is demonstrated by the excitation with a strong mid-infrared laser pulse. We prepare three types of HOIP polycrystalline thin film samples by solution processes (MAPbX3; MA = CH3NH3+;X = I, Br, Cl). The high-order harmonics from the sample (MAPbBr3) are more than tenfold stronger than those from the well-studied GaSe crystal despite their comparable bandgap energies, implying that the stronger band-to-band transition of the HOIPs causes the higher yields