We report the case of an asymptomatic six-year-old child with left atrial isomerism and sinus venosus atrial septal defect. The physical examination revealed several periods of bradycardia. During a 24-hour electrocardiographic monitoring the patient presented a significant sinus node dysfunction with sinus pauses of up to 2.4 seconds. A permanent pacemaker was implanted, with a satisfactory ou...

Three classes of hydrogen-bonded capsules with imperfect walls have been prepared and characterized. The defects reduce the symmetry of the capsules, leading to rich isomerism. The missing hydrogen bonds provide additional flexibility to the capsules and exert an influence on their guest binding properties in different assemblies.

The crystal structure of the title compound, C(16)H(26)NO(2) (+)·C(18)H(13)O(8) (-), is stabilized by an extensive network of classical N-H⋯O and O-H⋯O hydrogen bonding. The crystal structure also shows an ammonium-driven diastereo-isomerism.

OBJECTIVES Patients with left atrial isomerism and interrupted inferior vena cava palliated with a superior cavopulmonary connection or Kawashima procedure (KP) have a high incidence of developing pulmonary arteriovenous malformations. The necessity for hepatic vein redirection (HVR) and its timing remains a controversy. We aimed to assess the clinical outcome of patients with left atrial isome...

To cite: Haththotuwa HR, Dubrey SW. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/bcr-2013201046 DESCRIPTION At first glance these chest radiographs appear similar. Closer inspection suggests ‘dextrocardia’ (figure 1A) and ‘dextroposition’ (figure 1B). Confusing terminology is helped if the heart’s position within the thorax and point of direction of the apex is des...

BN Benzonitrile 2, a 1,2-dihydro-1,2-azaborine bearing an electron-withdrawing boron substituent was prepared and characterized, and its coordination chemistry investigated; reactivity studies revealed that BN benzonitrile 2 undergoes BCN-BNC linkage isomerism upon coordination to Cr(CO)(5).

Ivemark syndrome or right atrial isomerism is a rare syndrome of asplenia / hyposplenia with malformation of heart and abnormal arrangement of internal organs of chest and abdomen and is classified under heterotaxy disorder. We describe here the case of a 14 year old boy diagnosed with asplenia, dextrocardia with double outlet right ventricle and midline liver.

Three different crystal forms were obtained from the crystallisation of a flexible imidazole based ligand and CdBr(2) under different conditions. Structural analysis reveals that the correlation between the three metallocyclic compounds can be described in terms of isostructurality, solvatomorphism and supramolecular isomerism.

The first synthetic attempt commencing from an eight-membered ring to approach the [5.3.1] bicyclic core of vinigrol has demonstrated the feasibility of using the conformational bias of the cyclooctane-ring system to realize highly diastereoselective reactions. The synthetic potential of the newly disclosed access to in/out isomerism may stimulate broader interests.

By engineering thin magnetic films onto homogeneous colloidal particles, various crystalline lattices are induced from simple magnetic Janus spheres. In situ formation of dicolloids amplifies the diversity of achievable dynamic structures. The competition between shape anisotropy and dipole orientation generates mesoscopic isomerism. This opens design space for anisotropic building blocks for s...