PulmCCM - Page 38 of 44 - All the best in pulmonary & critical care
Apr 262011

Pulmonary hypertension is often “diagnosed” with a tricuspid regurgitant jet velocity > 2.5 m/s on echocardiogram. Bossone et al found that 76 of 615 (12%) trained athletes (strength or endurance) exceeded this number, and suggest the upper limit of normal should be 40 mm Hg in endurance athletes. CHEST 2011;139:788-794.

Apr 262011

Four-drug therapy (RIPE) requires high patient commitment and imposes logistical demands on health systems in developing countries. Lienhardt et al report that a fixed-drug combination (FDC) of rifampin, isoniazid, pyrazinamide, and ethambutol was noninferior in producing negative cultures at 18 months compared to taking the drugs separately (both arms ~94% cure rate) in Africa, Asia and Latin [… read more]

Apr 252011

Fen-phen died in court, but phenteramine was cleared of all serious charges. Gadde et al report phase III results for Qnexa (by Vivus), a phenteramine-topiramate combination. Over 56 weeks, takers of a double-dose of study drug lost 10 kg; single-dose, 8 kg; and placebo, 1.4 kg. There were plenty of side effects (dry mouth and paresthesias [… read more]

Apr 242011

Sacanella et al prospectively observed 230 generally healthy, cognitively intact, highly functional & independently living Spaniards 65 years or older (mean age 75) after urgent admission to a single MICU. About half received mechanical ventilation (54%). Seventy died in-hospital; 48 died within a year, for a one-year survival of 49%. But among the 112 survivors, [… read more]

Apr 242011

Maki et al randomized 407 patients at 25 dialysis units to have their catheters “locked” for up to 6 months with either heparin, or “C-MB-P solution” (citric acid, methylene blue, and propylparaben). The patients getting the antimicrobial potion had a 0.29 relative risk for bloodstream infection (BSI) without loss of catheter patency. (n=407) Crit Care Med 2011;39:613-620.

Apr 232011

In a 5-week prospective observational study in 47 Australian & New Zealand ICUs, Pettila et al (the ANZICS group) followed 757 ICU patients receiving red blood cell transfusions for anemia of any cause. Those in the quartile receiving the youngest RBCs (mean age 7.7 days) had an absolute 8% lower mortality than the other 3 [… read more]

Apr 232011

Varenicline is to be started one week prior to the smoking cessation quit date. Hajek et al randomized patients to take Chantix or placebo as a run-in for 3 weeks prior to that. All patients took varenicline for 1 week prior and 3 months after quitting. Those who were “preloaded” had 12-week abstinence rates of [… read more]

Apr 222011

Interviewing 100 patients or their surrogates in the ICU, 85% of whom were “full code,” Gehlbach et al found 16% of patients’ code status in the chart did not correlate with their expressed preferences during the interview (10 wanted less care, 6 wanted more). Respondents’ average prediction for their survival should they have a cardiac [… read more]

Apr 212011

Gooneratne et al selected 289 people over 65 (nondemented, nondepressed), half of whom had excessive daytime sleepiness (EDS). All got polysomnograms and were followed for a mean of 14 years. Those with EDS and sleep disordered breathing (SDB) had a hazard ratio for mortality of 2.7, that fell to 2.3 after adjusting for covariates. People [… read more]

Apr 192011

A systematic review of 3 trials (n=337) by the Bed Head Elevation Study Group (not to be confused with the Bedhead photo group) found no good evidence that head-of-bed (HOB) elevation to 45′ helps or harms in any way (pneumonia, decubiti, mortality, VTE, or hemodynamic instability). Nevertheless, a consensus panel of 22 experts agrees with previous [… read more]

Apr 182011

The MTB/RIF test is a rapid nucleic acid amplification test for TB. In a rollout in developing countries on 6,648 patients, the test was 90% sensitive for active TB, vs. 67% for smear microscopy (sputum culture was the gold standard). In smear-negative, culture-positive TB, the test was 77% sensitive and 99% specific. It also accurately detects rifampin [… read more]